make change to the font of other stuffs

app/src/main/java/org/schabi/newpipe/App.java

@@ -118,6 +118,7 @@ public class App extends Application {
         configureRxJavaErrorHandler();
     }
 
+
     @Override
     public void onTerminate() {
         super.onTerminate();

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -179,12 +179,13 @@ public class MainActivity extends AppCompatActivity {
                 && ReleaseVersionUtil.INSTANCE.isReleaseApk()) {
             UpdateSettingsFragment.askForConsentToUpdateChecks(this);
         }
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
+
     }
 
-    @Override
+@Override
     protected void onPostCreate(final Bundle savedInstanceState) {
         super.onPostCreate(savedInstanceState);
 
@@ -201,7 +202,7 @@ public class MainActivity extends AppCompatActivity {
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
 
     public void setUpFont(final String preferredFont) {

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -187,14 +187,14 @@ public class RouterActivity extends AppCompatActivity {
             }
         }
 
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
 
 

app/src/main/java/org/schabi/newpipe/about/AboutActivity.kt

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.about
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.MenuItem
@@ -10,8 +11,10 @@ import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentActivity
+import androidx.preference.PreferenceManager
 import androidx.viewpager2.adapter.FragmentStateAdapter
 import com.google.android.material.tabs.TabLayoutMediator
+import com.marcinorlowski.fonty.Fonty
 import org.schabi.newpipe.BuildConfig
 import org.schabi.newpipe.R
 import org.schabi.newpipe.databinding.ActivityAboutBinding
@@ -44,6 +47,15 @@ class AboutActivity : AppCompatActivity() {
         ) { tab, position ->
             tab.setText(mAboutStateAdapter.getPageTitle(position))
         }.attach()
+        val preferredFont = getPreferredFont(this)
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts(this)
+        }
+    }
+    fun getPreferredFont(context: Context?): String? {
+        val preferences = PreferenceManager
+            .getDefaultSharedPreferences(context!!)
+        return preferences.getString("preferred_font", getString(R.string.default_font_key))
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {

app/src/main/java/org/schabi/newpipe/download/DownloadActivity.java

@@ -69,7 +69,7 @@ public class DownloadActivity extends AppCompatActivity {
             FocusOverlayView.setupFocusObserver(this);
         }
         final String preferredFont = getPreferredFont(this);
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
@@ -85,7 +85,7 @@ public class DownloadActivity extends AppCompatActivity {
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
 
 

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -39,6 +39,7 @@ import androidx.documentfile.provider.DocumentFile;
 import androidx.fragment.app.DialogFragment;
 import androidx.preference.PreferenceManager;
 
+import com.marcinorlowski.fonty.Fonty;
 import com.nononsenseapps.filepicker.Utils;
 
 import org.schabi.newpipe.MainActivity;
@@ -117,7 +118,6 @@ public class DownloadDialog extends DialogFragment
     private ActionMenuItemView okButton = null;
     private Context context = null;
     private boolean askForSavePath;
-
     private AudioTrackAdapter audioTrackAdapter;
     private StreamItemAdapter<AudioStream, Stream> audioStreamsAdapter;
     private StreamItemAdapter<VideoStream, AudioStream> videoStreamsAdapter;
@@ -152,7 +152,6 @@ public class DownloadDialog extends DialogFragment
         // otherwise InstantiationException will be thrown when fragment is recreated
         // TODO: Maybe use a custom FragmentFactory instead?
     }
-
     /**
      * Create a new download dialog with the video, audio and subtitle streams from the provided
      * stream info. Video streams and video-only streams will be put into a single list menu,
@@ -245,6 +244,7 @@ public class DownloadDialog extends DialogFragment
         }, Context.BIND_AUTO_CREATE);
     }
 
+
     /**
      * Update the displayed video streams based on the selected audio track.
      */
@@ -287,10 +287,22 @@ public class DownloadDialog extends DialogFragment
                     + "inflater = [" + inflater + "], container = [" + container + "], "
                     + "savedInstanceState = [" + savedInstanceState + "]");
         }
-        return inflater.inflate(R.layout.download_dialog, container);
+        final View view = inflater.inflate(R.layout.download_dialog, container);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
+        }
+        return view;
     }
 
-    @Override
+    public String getPreferredFont(final Context cont) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(cont);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
+
+
+@Override
     public void onViewCreated(@NonNull final View view,
                               @Nullable final Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);

app/src/main/java/org/schabi/newpipe/error/ErrorActivity.java

@@ -132,7 +132,7 @@ public class ErrorActivity extends AppCompatActivity {
         for (final String e : errorInfo.getStackTraces()) {
             Log.e(TAG, e);
         }
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
@@ -161,7 +161,7 @@ public class ErrorActivity extends AppCompatActivity {
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
 
 

app/src/main/java/org/schabi/newpipe/error/ReCaptchaActivity.java

@@ -114,7 +114,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
 
         recaptchaBinding.reCaptchaWebView.loadUrl(url);
 
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
@@ -140,7 +140,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
 
 

app/src/main/java/org/schabi/newpipe/fragments/BlankFragment.java

@@ -1,11 +1,16 @@
 package org.schabi.newpipe.fragments;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import androidx.annotation.Nullable;
+import androidx.preference.PreferenceManager;
+
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
@@ -16,8 +21,19 @@ public class BlankFragment extends BaseFragment {
     public View onCreateView(final LayoutInflater inflater, @Nullable final ViewGroup container,
                              final Bundle savedInstanceState) {
         setTitle("NewPipe");
-        return inflater.inflate(R.layout.fragment_blank, container, false);
+        final View view = inflater.inflate(R.layout.fragment_blank, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
+
 
     @Override
     public void onResume() {

app/src/main/java/org/schabi/newpipe/fragments/EmptyFragment.java

@@ -10,6 +10,8 @@ import android.view.ViewGroup;
 import androidx.annotation.Nullable;
 import androidx.preference.PreferenceManager;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
 
@@ -26,7 +28,7 @@ public class EmptyFragment extends BaseFragment {
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
     @Override
     public View onCreateView(final LayoutInflater inflater, @Nullable final ViewGroup container,
@@ -35,6 +37,11 @@ public class EmptyFragment extends BaseFragment {
         final View view = inflater.inflate(R.layout.fragment_empty, container, false);
         view.findViewById(R.id.empty_state_view).setVisibility(
                 showMessage ? View.VISIBLE : View.GONE);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
+        }
+
         return view;
     }
 }

app/src/main/java/org/schabi/newpipe/fragments/MainFragment.java

@@ -32,6 +32,7 @@ import androidx.preference.PreferenceManager;
 import androidx.viewpager.widget.ViewPager;
 
 import com.google.android.material.tabs.TabLayout;
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
@@ -94,14 +95,22 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
     @Override
+
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_main, container, false);
+        final View view = inflater.inflate(R.layout.fragment_main, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
+        return view;
+    }
+
+
 
     @Override
     protected void initViews(final View rootView, final Bundle savedInstanceState) {

app/src/main/java/org/schabi/newpipe/fragments/detail/BaseDescriptionFragment.java

@@ -4,6 +4,8 @@ import static android.text.TextUtils.isEmpty;
 import static org.schabi.newpipe.extractor.utils.Utils.isBlank;
 import static org.schabi.newpipe.util.text.TextLinkifier.SET_LINK_MOVEMENT_METHOD;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.graphics.Typeface;
 import android.os.Bundle;
 import android.text.SpannableStringBuilder;
@@ -21,8 +23,10 @@ import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.appcompat.widget.TooltipCompat;
 import androidx.core.text.HtmlCompat;
+import androidx.preference.PreferenceManager;
 
 import com.google.android.material.chip.Chip;
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
@@ -53,8 +57,17 @@ public abstract class BaseDescriptionFragment extends BaseFragment {
         setupDescription();
         setupMetadata(inflater, binding.detailMetadataLayout);
         addTagsMetadataItem(inflater, binding.detailMetadataLayout);
+        final String preferredFont = getPreferredFont(binding.getRoot().getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) binding.getRoot());
+        }
         return binding.getRoot();
     }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
 
     @Override
     public void onDestroy() {

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -61,6 +61,7 @@ import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.bottomsheet.BottomSheetBehavior;
 import com.google.android.material.tabs.TabLayout;
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.App;
 import org.schabi.newpipe.R;
@@ -333,8 +334,18 @@ public final class VideoDetailFragment
     public View onCreateView(@NonNull final LayoutInflater inflater, final ViewGroup container,
                              final Bundle savedInstanceState) {
         binding = FragmentVideoDetailBinding.inflate(inflater, container, false);
+        final String preferredFont = getPreferredFont(binding.getRoot().getContext());
+        if (preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) binding.getRoot());
+        }
         return binding.getRoot();
     }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
+
 
     @Override
     public void onPause() {

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -28,6 +28,7 @@ import androidx.preference.PreferenceManager;
 import com.google.android.material.snackbar.Snackbar;
 import com.google.android.material.tabs.TabLayout;
 import com.jakewharton.rxbinding4.view.RxView;
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.database.subscription.NotificationMode;
@@ -192,8 +193,18 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
         binding = FragmentChannelBinding.inflate(inflater, container, false);
+        final String preferredFont = getPreferredFont(binding.getRoot().getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) binding.getRoot());
+        }
         return binding.getRoot();
     }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
+
 
     @Override // called from onViewCreated in BaseFragment.onViewCreated
     protected void initViews(final View rootView, final Bundle savedInstanceState) {

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelTabFragment.java

@@ -1,5 +1,7 @@
 package org.schabi.newpipe.fragments.list.channel;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -8,6 +10,9 @@ import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.preference.PreferenceManager;
+
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.databinding.PlaylistControlBinding;
@@ -75,8 +80,19 @@ public class ChannelTabFragment extends BaseListInfoFragment<InfoItem, ChannelTa
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_channel_tab, container, false);
+        final View view = inflater.inflate(R.layout.fragment_channel_tab, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
+
 
     @Override
     public void onDestroyView() {

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentRepliesFragment.java

@@ -2,6 +2,8 @@ package org.schabi.newpipe.fragments.list.comments;
 
 import static org.schabi.newpipe.util.ServiceHelper.getServiceById;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -11,6 +13,9 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.core.text.HtmlCompat;
+import androidx.preference.PreferenceManager;
+
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.databinding.CommentRepliesHeaderBinding;
@@ -65,8 +70,19 @@ public final class CommentRepliesFragment
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_comments, container, false);
+        final View view = inflater.inflate(R.layout.fragment_comments, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
+    }
+
 
     @Override
     public void onDestroyView() {

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentsFragment.java

@@ -1,5 +1,7 @@
 package org.schabi.newpipe.fragments.list.comments;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -10,6 +12,9 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.preference.PreferenceManager;
+
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.error.UserAction;
@@ -55,7 +60,17 @@ public class CommentsFragment extends BaseListInfoFragment<CommentsInfoItem, Com
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_comments, container, false);
+        final View view = inflater.inflate(R.layout.fragment_comments, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
+        }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/fragments/list/kiosk/KioskFragment.java

@@ -14,6 +14,8 @@ import androidx.annotation.Nullable;
 import androidx.appcompat.app.ActionBar;
 import androidx.preference.PreferenceManager;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.error.ErrorInfo;
 import org.schabi.newpipe.error.UserAction;
@@ -106,7 +108,7 @@ public class KioskFragment extends BaseListInfoFragment<StreamInfoItem, KioskInf
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
     @Override
     public void onResume() {
@@ -127,7 +129,12 @@ public class KioskFragment extends BaseListInfoFragment<StreamInfoItem, KioskInf
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_kiosk, container, false);
+        final View view = inflater.inflate(R.layout.fragment_kiosk, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
+        }
+        return view;
     }
 
     /*//////////////////////////////////////////////////////////////////////////

app/src/main/java/org/schabi/newpipe/fragments/list/playlist/PlaylistFragment.java

@@ -104,7 +104,7 @@ public class PlaylistFragment extends BaseListInfoFragment<StreamInfoItem, Playl
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
     public PlaylistFragment() {
         super(UserAction.REQUESTED_PLAYLIST);
@@ -129,7 +129,7 @@ public class PlaylistFragment extends BaseListInfoFragment<StreamInfoItem, Playl
                              @Nullable final Bundle savedInstanceState) {
         final View view = inflater.inflate(R.layout.fragment_playlist, container, false);
         final String preferredFont = getPreferredFont(view.getContext());
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts((ViewGroup) view);
         }
         return view;
@@ -147,7 +147,6 @@ public class PlaylistFragment extends BaseListInfoFragment<StreamInfoItem, Playl
 
         return headerBinding::getRoot;
     }
-
     @Override
     protected void initViews(final View rootView, final Bundle savedInstanceState) {
         super.initViews(rootView, savedInstanceState);
@@ -160,7 +159,6 @@ public class PlaylistFragment extends BaseListInfoFragment<StreamInfoItem, Playl
     private PlayQueue getPlayQueueStartingAt(final StreamInfoItem infoItem) {
         return getPlayQueue(Math.max(infoListAdapter.getItemsList().indexOf(infoItem), 0));
     }
-
     @Override
     protected void showInfoItemDialog(final StreamInfoItem item) {
         final Context context = getContext();
@@ -198,7 +196,6 @@ public class PlaylistFragment extends BaseListInfoFragment<StreamInfoItem, Playl
     public void onDestroyView() {
         headerBinding = null;
         playlistControlBinding = null;
-
         super.onDestroyView();
         if (isBookmarkButtonReady != null) {
             isBookmarkButtonReady.set(false);

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -40,6 +40,9 @@ import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.RecyclerView;
 
+
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.databinding.FragmentSearchBinding;
 import org.schabi.newpipe.error.ErrorInfo;
@@ -209,9 +212,22 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
     }
 
     @Override
-    public View onCreateView(final LayoutInflater inflater, @Nullable final ViewGroup container,
+    public View onCreateView(@NonNull final LayoutInflater inflater,
+                             @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_search, container, false);
+        final ViewGroup view = (ViewGroup) inflater
+                .inflate(R.layout.fragment_search, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts(view);
+        }
+        return view;
+    }
+
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/fragments/list/search/SuggestionListAdapter.java

@@ -1,13 +1,18 @@
 package org.schabi.newpipe.fragments.list.search;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
+import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.DiffUtil;
 import androidx.recyclerview.widget.ListAdapter;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.databinding.ItemSearchSuggestionBinding;
 
@@ -27,8 +32,19 @@ public class SuggestionListAdapter
     @Override
     public SuggestionItemHolder onCreateViewHolder(@NonNull final ViewGroup parent,
                                                    final int viewType) {
-        return new SuggestionItemHolder(ItemSearchSuggestionBinding
+        final SuggestionItemHolder item = new SuggestionItemHolder(ItemSearchSuggestionBinding
                 .inflate(LayoutInflater.from(parent.getContext()), parent, false));
+        final String preferredFont = getPreferredFont(item.itemView.getContext());
+        if (!preferredFont.equals("system")) {
+            Fonty.setFonts((ViewGroup) item.itemView);
+        }
+        return item;
+    }
+
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", "system");
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/fragments/list/videos/RelatedItemsFragment.java

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.fragments.list.videos;
 
+import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -12,6 +13,8 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.preference.PreferenceManager;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.databinding.RelatedItemsHeaderBinding;
 import org.schabi.newpipe.error.UserAction;
@@ -57,9 +60,20 @@ public class RelatedItemsFragment extends BaseListInfoFragment<InfoItem, Related
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_related_items, container, false);
+        final View view = inflater
+                .inflate(R.layout.fragment_related_items, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
 
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
     @Override
     public void onDestroyView() {
         headerBinding = null;

app/src/main/java/org/schabi/newpipe/info_list/InfoListAdapter.java

@@ -1,6 +1,8 @@
 package org.schabi.newpipe.info_list;
 
 import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -11,6 +13,8 @@ import androidx.annotation.Nullable;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.databinding.PignateFooterBinding;
 import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.channel.ChannelInfoItem;
@@ -274,11 +278,19 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
                 return -1;
         }
     }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", "system");
+    }
+
 
     @NonNull
     @Override
     public RecyclerView.ViewHolder onCreateViewHolder(@NonNull final ViewGroup parent,
                                                       final int type) {
+        final RecyclerView.ViewHolder holder;
+        final String preferredFont;
         if (DEBUG) {
             Log.d(TAG, "onCreateViewHolder() called with: "
                     + "parent = [" + parent + "], type = [" + type + "]");
@@ -288,40 +300,120 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
             // Always create a new instance otherwise the same instance
             // is sometimes reused which causes a crash
             case HEADER_TYPE:
-                return new HFHolder(headerSupplier.get());
+                holder = new HFHolder(headerSupplier.get());
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case FOOTER_TYPE:
-                return new HFHolder(PignateFooterBinding
+                holder = new HFHolder(PignateFooterBinding
                         .inflate(layoutInflater, parent, false)
                         .getRoot()
                 );
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case MINI_STREAM_HOLDER_TYPE:
-                return new StreamMiniInfoItemHolder(infoItemBuilder, parent);
+                holder = new StreamMiniInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case STREAM_HOLDER_TYPE:
-                return new StreamInfoItemHolder(infoItemBuilder, parent);
+                holder = new StreamInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case GRID_STREAM_HOLDER_TYPE:
-                return new StreamGridInfoItemHolder(infoItemBuilder, parent);
+                holder = new StreamGridInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case CARD_STREAM_HOLDER_TYPE:
-                return new StreamCardInfoItemHolder(infoItemBuilder, parent);
+                holder = new StreamCardInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case MINI_CHANNEL_HOLDER_TYPE:
-                return new ChannelMiniInfoItemHolder(infoItemBuilder, parent);
+                holder = new ChannelMiniInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case CHANNEL_HOLDER_TYPE:
-                return new ChannelInfoItemHolder(infoItemBuilder, parent);
+                holder = new ChannelInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case CARD_CHANNEL_HOLDER_TYPE:
-                return new ChannelCardInfoItemHolder(infoItemBuilder, parent);
+                holder = new ChannelCardInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case GRID_CHANNEL_HOLDER_TYPE:
-                return new ChannelGridInfoItemHolder(infoItemBuilder, parent);
+                holder = new ChannelGridInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case MINI_PLAYLIST_HOLDER_TYPE:
-                return new PlaylistMiniInfoItemHolder(infoItemBuilder, parent);
+                holder = new PlaylistMiniInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case PLAYLIST_HOLDER_TYPE:
-                return new PlaylistInfoItemHolder(infoItemBuilder, parent);
+                holder = new PlaylistInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case GRID_PLAYLIST_HOLDER_TYPE:
-                return new PlaylistGridInfoItemHolder(infoItemBuilder, parent);
+                holder = new PlaylistGridInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case CARD_PLAYLIST_HOLDER_TYPE:
-                return new PlaylistCardInfoItemHolder(infoItemBuilder, parent);
+                holder = new PlaylistCardInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             case COMMENT_HOLDER_TYPE:
-                return new CommentInfoItemHolder(infoItemBuilder, parent);
+                holder = new CommentInfoItemHolder(infoItemBuilder, parent);
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
             default:
-                return new FallbackViewHolder(new View(parent.getContext()));
+                holder = new FallbackViewHolder(new View(parent.getContext()));
+                preferredFont = getPreferredFont(holder.itemView.getContext());
+                if (!preferredFont.equals("system")) {
+                    Fonty.setFonts((ViewGroup) holder.itemView);
+                }
+                return holder;
         }
     }
 

app/src/main/java/org/schabi/newpipe/local/LocalItemListAdapter.java

@@ -1,15 +1,19 @@
 package org.schabi.newpipe.local;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.database.LocalItem;
 import org.schabi.newpipe.database.stream.model.StreamStateEntity;
 import org.schabi.newpipe.info_list.ItemViewMode;
@@ -27,7 +31,6 @@ import org.schabi.newpipe.local.holder.LocalStatisticStreamGridItemHolder;
 import org.schabi.newpipe.local.holder.LocalStatisticStreamItemHolder;
 import org.schabi.newpipe.local.holder.RemoteBookmarkPlaylistItemHolder;
 import org.schabi.newpipe.local.holder.RemotePlaylistCardItemHolder;
-import org.schabi.newpipe.local.holder.RemotePlaylistGridItemHolder;
 import org.schabi.newpipe.local.holder.RemotePlaylistItemHolder;
 import org.schabi.newpipe.util.FallbackViewHolder;
 import org.schabi.newpipe.util.Localization;
@@ -312,48 +315,95 @@ public class LocalItemListAdapter extends RecyclerView.Adapter<RecyclerView.View
     @Override
     public RecyclerView.ViewHolder onCreateViewHolder(@NonNull final ViewGroup parent,
                                                       final int type) {
+        final RecyclerView.ViewHolder holder;
         if (DEBUG) {
             Log.d(TAG, "onCreateViewHolder() called with: "
                     + "parent = [" + parent + "], type = [" + type + "]");
         }
         switch (type) {
             case HEADER_TYPE:
+                holder = new HeaderFooterHolder(header);
+                setUpFont(holder);
                 return new HeaderFooterHolder(header);
             case FOOTER_TYPE:
-                return new HeaderFooterHolder(footer);
+                holder = new HeaderFooterHolder(footer);
+                setUpFont(holder);
+                return holder;
             case LOCAL_PLAYLIST_HOLDER_TYPE:
-                return new LocalPlaylistItemHolder(localItemBuilder, parent);
+                holder = new LocalPlaylistItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case LOCAL_PLAYLIST_GRID_HOLDER_TYPE:
-                return new LocalPlaylistGridItemHolder(localItemBuilder, parent);
+                holder = new LocalPlaylistGridItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case LOCAL_PLAYLIST_CARD_HOLDER_TYPE:
-                return new LocalPlaylistCardItemHolder(localItemBuilder, parent);
+                holder = new LocalPlaylistCardItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case LOCAL_BOOKMARK_PLAYLIST_HOLDER_TYPE:
-                return new LocalBookmarkPlaylistItemHolder(localItemBuilder, parent);
+                holder = new LocalBookmarkPlaylistItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case REMOTE_PLAYLIST_HOLDER_TYPE:
-                return new RemotePlaylistItemHolder(localItemBuilder, parent);
+                holder = new RemotePlaylistItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case REMOTE_PLAYLIST_GRID_HOLDER_TYPE:
-                return new RemotePlaylistGridItemHolder(localItemBuilder, parent);
+                holder = new RemotePlaylistCardItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case REMOTE_PLAYLIST_CARD_HOLDER_TYPE:
-                return new RemotePlaylistCardItemHolder(localItemBuilder, parent);
+                holder = new HeaderFooterHolder(footer);
+                setUpFont(holder);
+                return holder;
             case REMOTE_BOOKMARK_PLAYLIST_HOLDER_TYPE:
-                return new RemoteBookmarkPlaylistItemHolder(localItemBuilder, parent);
+                holder = new RemoteBookmarkPlaylistItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case STREAM_PLAYLIST_HOLDER_TYPE:
-                return new LocalPlaylistStreamItemHolder(localItemBuilder, parent);
+                holder = new LocalPlaylistStreamItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case STREAM_PLAYLIST_GRID_HOLDER_TYPE:
-                return new LocalPlaylistStreamGridItemHolder(localItemBuilder, parent);
+                holder = new LocalPlaylistStreamGridItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case STREAM_PLAYLIST_CARD_HOLDER_TYPE:
-                return new LocalPlaylistStreamCardItemHolder(localItemBuilder, parent);
+                holder = new LocalPlaylistStreamCardItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case STREAM_STATISTICS_HOLDER_TYPE:
-                return new LocalStatisticStreamItemHolder(localItemBuilder, parent);
+                holder = new LocalStatisticStreamItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case STREAM_STATISTICS_GRID_HOLDER_TYPE:
-                return new LocalStatisticStreamGridItemHolder(localItemBuilder, parent);
+                holder = new LocalStatisticStreamGridItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             case STREAM_STATISTICS_CARD_HOLDER_TYPE:
-                return new LocalStatisticStreamCardItemHolder(localItemBuilder, parent);
+                holder = new LocalStatisticStreamCardItemHolder(localItemBuilder, parent);
+                setUpFont(holder);
+                return holder;
             default:
+                holder = new FallbackViewHolder(new View(parent.getContext()));
+                setUpFont(holder);
                 Log.e(TAG, "No view type has been considered for holder: [" + type + "]");
-                return new FallbackViewHolder(new View(parent.getContext()));
+                return holder;
         }
     }
+    public void setUpFont(final RecyclerView.ViewHolder holder) {
+        final View view = holder.itemView;
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals("system")) {
+            Fonty.setFonts((ViewGroup) view);
+        }
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", "system");
+    }
 
     @SuppressWarnings("FinalParameters")
     @Override

app/src/main/java/org/schabi/newpipe/local/bookmark/BookmarkFragment.java

@@ -2,7 +2,9 @@ package org.schabi.newpipe.local.bookmark;
 
 import static org.schabi.newpipe.local.bookmark.MergedPlaylistManager.getMergedOrderedPlaylists;
 
+import android.content.Context;
 import android.content.DialogInterface;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.text.InputType;
@@ -16,9 +18,12 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.FragmentManager;
+import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 import org.schabi.newpipe.NewPipeDatabase;
@@ -97,13 +102,21 @@ public final class BookmarkFragment extends BaseLocalListFragment<List<PlaylistL
     @Override
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
-                             final Bundle savedInstanceState) {
+                             @Nullable final Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.fragment_bookmarks, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
+        }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
+    }
+
 
-        if (!useAsFrontPage) {
-            setTitle(activity.getString(R.string.tab_bookmarks));
-        }
-        return inflater.inflate(R.layout.fragment_bookmarks, container, false);
-    }
 
     @Override
     public void onResume() {

app/src/main/java/org/schabi/newpipe/local/dialog/PlaylistAppendDialog.java

@@ -1,5 +1,7 @@
 package org.schabi.newpipe.local.dialog;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -9,9 +11,12 @@ import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.NewPipeDatabase;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.database.playlist.model.PlaylistEntity;
@@ -51,10 +56,22 @@ public final class PlaylistAppendDialog extends PlaylistDialog {
     //////////////////////////////////////////////////////////////////////////*/
 
     @Override
-    public View onCreateView(@NonNull final LayoutInflater inflater, final ViewGroup container,
+    public View onCreateView(@NonNull final LayoutInflater inflater,
-                             final Bundle savedInstanceState) {
+                             @Nullable final ViewGroup container,
-        return inflater.inflate(R.layout.dialog_playlists, container);
+                             @Nullable final Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.dialog_playlists, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
+    }
+
 
     @Override
     public void onViewCreated(@NonNull final View view, @Nullable final Bundle savedInstanceState) {

app/src/main/java/org/schabi/newpipe/local/feed/FeedFragment.kt

@@ -44,6 +44,7 @@ import androidx.lifecycle.ViewModelProvider
 import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.marcinorlowski.fonty.Fonty
 import com.xwray.groupie.GroupieAdapter
 import com.xwray.groupie.Item
 import com.xwray.groupie.OnItemClickListener
@@ -124,13 +125,16 @@ class FeedFragment : BaseStateFragment<FeedState>() {
         PreferenceManager.getDefaultSharedPreferences(activity)
             .registerOnSharedPreferenceChangeListener(onSettingsChangeListener)
     }
-//    fun getPreferredFont(context: Context?): String? {
+
-//        val preferences = PreferenceManager
-//            .getDefaultSharedPreferences(context!!)
-//        return preferences.getString("preferred_font", "default_font_name")
-//    }
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_feed, container, false)
+        val curView = inflater.inflate(R.layout.fragment_feed, container, false) as ViewGroup
+
+        // Apply the preferred font globally
+        val preferredFont = getPreferredFont(curView.context)
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts(curView)
+        }
+        return curView
     }
 
     override fun onViewCreated(rootView: View, savedInstanceState: Bundle?) {
@@ -183,6 +187,11 @@ class FeedFragment : BaseStateFragment<FeedState>() {
             }
         }
     }
+    fun getPreferredFont(context: Context?): String? {
+        val preferences = PreferenceManager
+            .getDefaultSharedPreferences(context!!)
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)))
+    }
 
     private fun setupListViewMode() {
         // does everything needed to setup the layouts for grid or list modes

app/src/main/java/org/schabi/newpipe/local/history/StatisticsPlaylistFragment.java

@@ -1,6 +1,7 @@
 package org.schabi.newpipe.local.history;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.view.LayoutInflater;
@@ -13,9 +14,11 @@ import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.preference.PreferenceManager;
 import androidx.viewbinding.ViewBinding;
 
 import com.google.android.material.snackbar.Snackbar;
+import com.marcinorlowski.fonty.Fonty;
 
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
@@ -95,8 +98,19 @@ public class StatisticsPlaylistFragment
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_playlist, container, false);
+        final View view = inflater.inflate(R.layout.fragment_playlist, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
+    }
+
 
     @Override
     public void onResume() {

app/src/main/java/org/schabi/newpipe/local/holder/LocalBookmarkPlaylistItemHolder.java

@@ -1,9 +1,15 @@
 package org.schabi.newpipe.local.holder;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 
+import androidx.preference.PreferenceManager;
+
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.database.LocalItem;
 import org.schabi.newpipe.database.playlist.PlaylistMetadataEntry;
@@ -24,7 +30,18 @@ public class LocalBookmarkPlaylistItemHolder extends LocalPlaylistItemHolder {
                                     final ViewGroup parent) {
         super(infoItemBuilder, layoutId, parent);
         itemHandleView = itemView.findViewById(R.id.itemHandle);
+
+        final String preferredFont = getPreferredFont(itemHandleView.getContext());
+        if (!preferredFont.equals("system")) {
+            Fonty.setFonts((ViewGroup) itemHandleView);
         }
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", "system");
+    }
+
 
     @Override
     public void updateFromItem(final LocalItem localItem,

app/src/main/java/org/schabi/newpipe/local/playlist/LocalPlaylistFragment.java

@@ -28,6 +28,8 @@ import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.viewbinding.ViewBinding;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 import org.schabi.newpipe.NewPipeDatabase;
@@ -130,13 +132,18 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
     @Override
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_playlist, container, false);
+        final View view = inflater.inflate(R.layout.fragment_playlist, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
+        }
+        return view;
     }
 
     ///////////////////////////////////////////////////////////////////////////

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.kt

@@ -19,7 +19,9 @@ import androidx.activity.result.contract.ActivityResultContracts.StartActivityFo
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
 import androidx.lifecycle.ViewModelProvider
+import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.GridLayoutManager
+import com.marcinorlowski.fonty.Fonty
 import com.xwray.groupie.Group
 import com.xwray.groupie.GroupAdapter
 import com.xwray.groupie.Section
@@ -106,7 +108,18 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_subscription, container, false)
+        val curView = inflater.inflate(R.layout.fragment_subscription, container, false) as ViewGroup
+        val preferredFont = getPreferredFont(curView.context)
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts(curView)
+        }
+
+        return curView
+    }
+    fun getPreferredFont(context: Context?): String? {
+        val preferences = PreferenceManager
+            .getDefaultSharedPreferences(context!!)
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)))
     }
 
     override fun onPause() {

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionsImportFragment.java

@@ -7,7 +7,9 @@ import static org.schabi.newpipe.local.subscription.services.SubscriptionsImport
 import static org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.KEY_VALUE;
 
 import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.text.TextUtils;
 import android.text.util.Linkify;
@@ -26,6 +28,9 @@ import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.appcompat.app.ActionBar;
 import androidx.core.text.util.LinkifyCompat;
+import androidx.preference.PreferenceManager;
+
+import com.marcinorlowski.fonty.Fonty;
 
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
@@ -107,8 +112,19 @@ public class SubscriptionsImportFragment extends BaseFragment {
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              final Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_import, container, false);
+        final View view = inflater.inflate(R.layout.fragment_import, container, false);
+        final String preferredFont = getPreferredFont(view.getContext());
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts((ViewGroup) view);
         }
+        return view;
+    }
+    public String getPreferredFont(final Context context) {
+        final SharedPreferences preferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
+    }
+
 
     /*/////////////////////////////////////////////////////////////////////////
     // Fragment Views

app/src/main/java/org/schabi/newpipe/local/subscription/dialog/FeedGroupDialog.kt

@@ -1,6 +1,7 @@
 package org.schabi.newpipe.local.subscription.dialog
 
 import android.app.Dialog
+import android.content.Context
 import android.os.Bundle
 import android.os.Parcelable
 import android.view.LayoutInflater
@@ -16,8 +17,10 @@ import androidx.core.widget.doOnTextChanged
 import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
+import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.marcinorlowski.fonty.Fonty
 import com.xwray.groupie.GroupieAdapter
 import com.xwray.groupie.OnItemClickListener
 import com.xwray.groupie.Section
@@ -89,7 +92,17 @@ class FeedGroupDialog : DialogFragment(), BackPressable {
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        return inflater.inflate(R.layout.dialog_feed_group_create, container)
+        val curView = inflater.inflate(R.layout.dialog_feed_group_create, container) as ViewGroup
+        val preferredFont = getPreferredFont(curView.context)
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts(curView)
+        }
+        return curView
+    }
+    fun getPreferredFont(context: Context?): String? {
+        val preferences = PreferenceManager
+            .getDefaultSharedPreferences(context!!)
+        return preferences.getString("preferred_font", getString(R.string.default_font_key))
     }
 
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {

app/src/main/java/org/schabi/newpipe/local/subscription/dialog/FeedGroupReorderDialog.kt

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.local.subscription.dialog
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -7,10 +8,12 @@ import android.view.ViewGroup
 import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
+import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.ItemTouchHelper.SimpleCallback
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.marcinorlowski.fonty.Fonty
 import com.xwray.groupie.GroupieAdapter
 import com.xwray.groupie.TouchCallback
 import icepick.Icepick
@@ -48,7 +51,18 @@ class FeedGroupReorderDialog : DialogFragment() {
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.dialog_feed_group_reorder, container)
+        val curView = (inflater.inflate(R.layout.dialog_feed_group_reorder, container)) as ViewGroup
+        val preferredFont = getPreferredFont(curView.context)
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
+            Fonty.setFonts(curView)
+        }
+
+        return curView
+    }
+    fun getPreferredFont(context: Context?): String? {
+        val preferences = PreferenceManager
+            .getDefaultSharedPreferences(context!!)
+        return preferences.getString("preferred_font", getString(R.string.default_font_key))
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {

app/src/main/java/org/schabi/newpipe/player/PlayQueueActivity.java

@@ -104,7 +104,7 @@ public final class PlayQueueActivity extends AppCompatActivity
 
         serviceConnection = getServiceConnection();
         bind();
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
@@ -137,7 +137,7 @@ public final class PlayQueueActivity extends AppCompatActivity
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
 
 

app/src/main/java/org/schabi/newpipe/settings/ContentSettingsFragment.java

@@ -40,7 +40,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
                 .getPreferredContentCountry(requireContext());
         initialLanguage = defaultPreferences.getString(getString(R.string.app_language_key), "en");
         initialSelectedFont = defaultPreferences
-                .getString(getString(R.string.app_font_key), "Default");
+                .getString(getString(R.string.app_font_key), getString(R.string.default_font_key));
         final Preference imageQualityPreference = requirePreference(R.string.image_quality_key);
         imageQualityPreference.setOnPreferenceChangeListener(
                 (preference, newValue) -> {

app/src/main/java/org/schabi/newpipe/settings/HistorySettingsFragment.java

@@ -60,7 +60,7 @@ public class HistorySettingsFragment extends BasePreferenceFragment {
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
     @Override
     public boolean onPreferenceTreeClick(final Preference preference) {

app/src/main/java/org/schabi/newpipe/settings/MainSettingsFragment.java

@@ -64,7 +64,8 @@ public class MainSettingsFragment extends BasePreferenceFragment {
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        // if no prefered font, return system default
+        return preferences.getString("preferred_font", getString(R.string.default_font_key));
     }
     @Override
     public void onDestroy() {

app/src/main/java/org/schabi/newpipe/settings/SelectPlaylistFragment.java

@@ -2,6 +2,8 @@ package org.schabi.newpipe.settings;
 
 import static org.schabi.newpipe.local.bookmark.MergedPlaylistManager.getMergedOrderedPlaylists;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -12,9 +14,12 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
+import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.marcinorlowski.fonty.Fonty;
+
 import org.schabi.newpipe.NewPipeDatabase;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.database.AppDatabase;
@@ -146,8 +151,18 @@ public class SelectPlaylistFragment extends DialogFragment {
                                                            final int viewType) {
             final View item = LayoutInflater.from(parent.getContext())
                     .inflate(R.layout.list_playlist_mini_item, parent, false);
+            final String preferredFont = getPreferredFont(item.getContext());
+            if (!preferredFont.equals(getString(R.string.default_font_key))) {
+                Fonty.setFonts((ViewGroup) item);
+            }
             return new SelectPlaylistItemHolder(item);
         }
+        public String getPreferredFont(final Context context) {
+            final SharedPreferences preferences = PreferenceManager
+                    .getDefaultSharedPreferences(context);
+            return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
+        }
+
 
         @Override
         public void onBindViewHolder(@NonNull final SelectPlaylistItemHolder holder,

app/src/main/java/org/schabi/newpipe/settings/SettingsActivity.java

@@ -125,7 +125,7 @@ public class SettingsActivity extends AppCompatActivity implements
             FocusOverlayView.setupFocusObserver(this);
         }
         final String preferredFont = getPreferredFont(this);
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
@@ -268,7 +268,7 @@ public class SettingsActivity extends AppCompatActivity implements
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
 
 

app/src/main/java/org/schabi/newpipe/util/FilePickerActivityHelper.java

@@ -47,7 +47,7 @@ public class FilePickerActivityHelper extends com.nononsenseapps.filepicker.File
         }
         super.onCreate(savedInstanceState);
 
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
@@ -65,7 +65,7 @@ public class FilePickerActivityHelper extends com.nononsenseapps.filepicker.File
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
 
 

app/src/main/java/us/shandian/giga/ui/common/ToolbarActivity.java

@@ -25,14 +25,14 @@ public abstract class ToolbarActivity extends AppCompatActivity {
 
         setSupportActionBar(mToolbar);
 
-        if (preferredFont != "default_font_name") {
+        if (!preferredFont.equals(getString(R.string.default_font_key))) {
             Fonty.setFonts(this);
         }
     }
     public String getPreferredFont(final Context context) {
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(context);
-        return preferences.getString("preferred_font", "default_font_name");
+        return preferences.getString("preferred_font", (getString(R.string.default_font_key)));
     }
 
 

app/src/main/res/values/settings_keys.xml

@@ -504,6 +504,10 @@
 
     <!-- Localizations   -->
     <string name="default_localization_key">system</string>
+    <!--    Font-->
+    <string name="default_font_key">system</string>
+    <string name="preferred_font_key">preferred_font</string>
+
     <!-- alternatively, load these from some local android data store -->
     <string-array name="language_codes">
         <item>@string/default_localization_key</item>