Add proper toggle for service

app/build.gradle

@@ -6,7 +6,7 @@ android {
         applicationId "us.spotco.malwarescanner"
         minSdkVersion 21
         targetSdkVersion 26
-        versionCode 7
+        versionCode 8
         versionName "1.3" }
     buildTypes {
         release {

app/src/main/java/us/spotco/malwarescanner/MainActivity.java

@@ -1,6 +1,8 @@
 package us.spotco.malwarescanner;
 
 import android.Manifest;
+import android.app.ActivityManager;
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
@@ -11,12 +13,15 @@ import android.support.design.widget.FloatingActionButton;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.SwitchCompat;
 import android.support.v7.widget.Toolbar;
 import android.text.method.ScrollingMovementMethod;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.WindowManager;
+import android.widget.CompoundButton;
+import android.widget.Switch;
 import android.widget.TextView;
 
 import java.io.File;
@@ -84,6 +89,7 @@ public class MainActivity extends AppCompatActivity {
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.menu_main, menu);
+        menu.findItem(R.id.toggleRealtime).setChecked(isServiceRunning(MalwareScannerService.class));
         return true;
     }
 
@@ -102,9 +108,14 @@ public class MainActivity extends AppCompatActivity {
                     Database.loadDatabase(false, Database.signatureDatabases);
                 }
                 break;
-            case R.id.mnuStartRealtime:
-                Intent realtimeScanner = new Intent(this, MalwareScannerService.class);
-                startService(realtimeScanner);
+            case R.id.toggleRealtime:
+                Intent realtimeScanner = new Intent(getApplicationContext(), MalwareScannerService.class);
+                if(!item.isChecked()) {
+                    startService(realtimeScanner);
+                } else {
+                    stopService(realtimeScanner);
+                }
+                item.setChecked(!item.isChecked());
                 break;
             case R.id.mnuScanSystem:
                 scanSystem = !item.isChecked();
@@ -125,4 +136,15 @@ public class MainActivity extends AppCompatActivity {
         }
         return super.onOptionsItemSelected(item);
     }
+
+
+    private boolean isServiceRunning(Class<?> serviceClass) {
+        ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
+        for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
+            if (serviceClass.getName().equals(service.service.getClassName())) {
+                return true;
+            }
+        }
+        return false;
+    }
 }

app/src/main/java/us/spotco/malwarescanner/MalwareScannerService.java

@@ -30,7 +30,6 @@ public class MalwareScannerService extends Service {
         if (true) {//Check if we're enabled
             malwareMonitors = new ArrayList<>();
             malwareMonitors.add(new MalwareMonitor(Environment.getExternalStorageDirectory().toString()));
-            malwareMonitors.add(new MalwareMonitor(getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS).toString()));
 
             for (MalwareMonitor malwareMonitor : malwareMonitors) {
                 malwareMonitor.startWatching();
@@ -69,7 +68,6 @@ public class MalwareScannerService extends Service {
     private class MalwareMonitor extends FileObserver {
 
         private String rootPath = null;
-        private Set<File> filesScannedRecently = new HashSet<>();
 
         public MalwareMonitor(String path) {
             super(path);
@@ -83,14 +81,10 @@ public class MalwareScannerService extends Service {
         public void onEvent(int eventID, String path) {
             if (eventID == FileObserver.CLOSE_WRITE) {
                 File file = new File(rootPath + path);
-                if (!filesScannedRecently.contains(file)) {
-                    filesScannedRecently.clear();
-                    if (file.exists() && file.length() > 0) {
-                        Set<File> filesToScan = new HashSet<>();
-                        filesToScan.add(file);
-                        filesScannedRecently.add(file);
-                        new MalwareScanner(null, getApplicationContext(), false).execute(filesToScan);
-                    }
+                if (file.exists() && file.length() > 0) {
+                    Set<File> filesToScan = new HashSet<>();
+                    filesToScan.add(file);
+                    new MalwareScanner(null, getApplicationContext(), false).execute(filesToScan);
                 }
             }
         }

app/src/main/res/menu/menu_main.xml

@@ -1,14 +1,15 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     tools:context="us.spotco.malwarescanner.MainActivity">
 
     <item
         android:id="@+id/mnuUpdateDatabase"
         android:title="@string/lblUpdateDatabase" />
-
     <item
-        android:id="@+id/mnuStartRealtime"
-        android:title="@string/lblStartRealtime" />
+        android:id="@+id/toggleRealtime"
+        android:title="@string/lblRealtimeScannerToggle"
+        android:checkable="true" />
 
     <item
         android:id="@+id/mnuScanSystem"

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

@@ -9,4 +9,5 @@
     <string name="lblNotificationRealtimeTitle">Realtime Scanner</string>
     <string name="lblNotificationRealtimeText">Malware will be detected in realtime</string>
     <string name="lblNotificationRealtimeDetection">Malware Detected!</string>
+    <string name="lblRealtimeScannerToggle">Realtime Scanner</string>
 </resources>