Java how to stop screen going off android studio

To prevent the screen from going off in Android, you can use the FLAG_KEEP_SCREEN_ON flag in your activity's window.

To do this, you can call the getWindow method of the Activity class to get a reference to the activity's window, and then call the addFlags method of the Window class to add the FLAG_KEEP_SCREEN_ON flag.

Here's an example of how you can do this in your activity's onCreate method:

public class MyActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my);

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    }
}

This code will keep the screen on while the activity is visible.

Note that using the FLAG_KEEP_SCREEN_ON flag will drain the battery faster, so you should use it only when necessary and release it when it is no longer needed. You can use the clearFlags method of the Window class to remove the FLAG_KEEP_SCREEN_ON flag from the activity's window.

Here's an example of how you can do this in your activity's onPause method:

@Override
protected void onPause() {
    super.onPause();
    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}

This code will remove the FLAG_KEEP_SCREEN_ON flag from the activity.