Can't import

[AndroidDeveloperLB]

I get this error, even after I try to update all that's possible to update:

C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:3: error: package net.rbgrn.android.glwallpaperservice does not exist import net.rbgrn.android.glwallpaperservice.; ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:44: error: cannot find symbol public class GLWallpaperVideoDemo extends GLWallpaperService { ^ symbol: class GLWallpaperService C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:125: error: cannot find symbol class VideoEngine extends GLEngine { ^ symbol: class GLEngine location: class GLWallpaperVideoDemo C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:119: error: cannot find symbol public Engine onCreateEngine() { ^ symbol: class Engine location: class GLWallpaperVideoDemo C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\VideoRenderer.java:11: error: package net.rbgrn.android.glwallpaperservice does not exist import net.rbgrn.android.glwallpaperservice.; ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\VideoRenderer.java:38: error: package GLWallpaperService does not exist public class VideoRenderer implements GLWallpaperService.Renderer { ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:57: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:60: error: cannot find symbol super.onCreate(); ^ symbol: variable super location: class GLWallpaperVideoDemo C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:79: error: cannot find symbol AssetManager assetManager = getAssets(); ^ symbol: method getAssets() location: class GLWallpaperVideoDemo C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:109: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:112: error: cannot find symbol super.onDestroy(); ^ symbol: variable super location: class GLWallpaperVideoDemo C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:118: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:134: error: cannot find symbol setRenderer(renderer); ^ symbol: method setRenderer(VideoRenderer) location: class GLWallpaperVideoDemo.VideoEngine C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:136: error: cannot find symbol setRenderMode(RENDERMODE_CONTINUOUSLY); ^ symbol: variable RENDERMODE_CONTINUOUSLY location: class GLWallpaperVideoDemo.VideoEngine C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:141: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:144: error: cannot find symbol super.onCreate(surfaceHolder); ^ symbol: variable super location: class GLWallpaperVideoDemo.VideoEngine C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:147: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:150: error: cannot find symbol super.onDestroy(); ^ symbol: variable super location: class GLWallpaperVideoDemo.VideoEngine C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:157: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:161: error: cannot find symbol super.onSurfaceChanged(holder, format, w, h); ^ symbol: variable super location: class GLWallpaperVideoDemo.VideoEngine C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:164: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:167: error: cannot find symbol super.onSurfaceCreated(holder); ^ symbol: variable super location: class GLWallpaperVideoDemo.VideoEngine C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:170: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:173: error: cannot find symbol super.onSurfaceDestroyed(holder); ^ symbol: variable super location: class GLWallpaperVideoDemo.VideoEngine C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:176: error: method does not override or implement a method from a supertype @Override ^ C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:179: error: cannot find symbol super.onVisibilityChanged(visible); ^ symbol: variable super location: class GLWallpaperVideoDemo.VideoEngine 26 errors :app:compileDebugJavaWithJavac FAILED

FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':app:compileDebugJavaWithJavac'.

Compilation failed; see the compiler error output for details.

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 2s 14 actionable tasks: 14 executed