How to set android lock screen image

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As of API Level 24 they have added new methods (and updated the documentation) and flags to the WallpaperManager which allow you to set a Wallpaper not only to the home screen but also to the Lockscreen

To set a Wallpaper to the Lockscreen use the new flag WallpaperManager.FLAG_LOCK, and one of the methods which take int which

WallpaperManager.getInstance(this).setStream(inputStream, null, true, WallpaperManager.FLAG_LOCK);

You can also use one of the following methods

int setStream (InputStream bitmapData,  Rect visibleCropHint,  boolean allowBackup, int which)

int setResource (int resid, int which)

int setBitmap (Bitmap fullImage, Rect visibleCropHint,  boolean allowBackup,  int which)

A nice addition is that you can now also check if you are allowed to set the wallpaper via isSetWallpaperAllowed, and get the current set wallpaper via getWallpaperFile

Check out the updated documentation for the WallpaperManager.

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