title: Wallpaper does not set on lock screen on MIUI 10.2 redmi devices
body: <p>I am trying to set wallpaper on lock screen in miui 10.2 Redmi devices.  </p>
  
  <p>I can set home screen wallpaper using this code :</p>
  
  <pre><code> wallpaperManager.setBitmap(crackedBitmap);
  </code></pre>
  
  <p>But when i am trying to set lock screen wallpaper using this code it's not working :</p>
  
  <pre><code>WallpaperManager wallpaperManager;
  wallpaperManager = WallpaperManager.getInstance(getApplicationContext());
  wallpaperManager.setBitmap(bitmap,null,true,WallpaperManager.FLAG_LOCK);
  </code></pre>
  
  <p>Toast is printing that wallpaper is set but not showing in lock screen</p>