On all of the devices that I've checked, there is a folder called "Movies"
on the SD Card by default. NewPipe should use that standard location
since it is always downloading movies :). People can always change that
via the preferences.
Also, this makes the defaults the same when creating the dir and when
setting the destination URL.
This makes the app fully exit, and removes it from the Recent Apps listing
with the goal of hiding whatever the user was currently watching, and/or
searching for.
PanicKit provides a common framework for creating "panic button" apps that
can trigger actions in "panic responder" apps. In this case, the response
is to lock the app, if it has been configured to do so
https://dev.guardianproject.info/projects/panic/wiki
Also I added new variable `'final File dir`' with value of key
"download_path_preference" or externalStorageDirectory.
Firstly I check if dir exits, then eventually try to create it and next
- download file.
* ugly workaround for the details_view_layout problem on older devices
* removed "display button on the left side" option since it's not nececeay anymore.
* added VideoInfo(AbstractVideoInfo) constructor, to support later implementation for reusing info scraped into VideoPreviewInfo, into VideoInfo
* Made the Extractor class behave as a per-video object;
- most method return values are video-specific, so it makes sense (to me) to have Extractor be stateful.
- The only stateless methods are getVideoUrl(), getVideoId() and loadDecryptionCode(String)
* Implemented a constructor for YoutubeExtractor, which performs all initialisation work
* renamed VideoInfoItem to VideoPreviewInfo
* moved streaming service-related classes into their own, new package services
* added javadoc to some classes and methods (where functionality is known well enough to explain)
* De-duplicated common fields between VideoInfo and VideoPreviewInfo by moving them into a common superclass: AbstractVideoInfo
* Removed 2 methods which only call super(), and therefore are unnecessary: PlayVideoActivity.onResume() and PlayVideoActivity.onPostCreate(Bundle)
