Android - Rotate screen programmatically without locking it [duplicate]

Question

I'm trying to achieve this behaviour:

• When I rotate the device to landscape, the screen does it too.
• To get it back to portrait there are two ways:
  1. Rotating the device
  2. Clicking on a button that appears only in landscape mode that will rotate the screen back to portrait.

The problem: The button that puts the screen back to portrait works just fine but then I want to be able to rotate the device to landscape and rotate the screen, but it remains locked in portrait.

The behaviour is like youtube player, where you rotate or click the button to exit fullscreen.

My code for the button:

findViewById(R.id.exit_fs).setOnClickListener(new Button.OnClickListener(){
    @Override
    public void onClick(View arg0) {
        setRequestedOrientation(Build.VERSION.SDK_INT < 9 ?
        ActivityInfo.SCREEN_ORIENTATION_PORTRAIT :
        ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);
    }
});

Any ideas?

Answer 1

I'v found this approach very nice:

// E.g. fullscreen button pressed - set landscape orientation;
// it will disable orientation by the sensor.
setRequestedOrientation(SCREEN_ORIENTATION_LANDSCAPE)

// Assume now user rotated the device... or not.

// Anyway enable orientation by the sensor after few seconds, so user may use app normal way.
someView.postDelayed(
    { setRequestedOrientation(SCREEN_ORIENTATION_SENSOR) }, delay = 5000L)

Answer 2

I had the exact same problem. What I ended up with was using an OrientationListener to detect when the user had actually tilted the phone to landscape and then setting the orientation to SCREEN_ORIENTATION_SENSOR.

OrientationEventListener orientationEventListener = new OrientationEventListener(getActivity()) {
@Override
public void onOrientationChanged(int orientation) {
    int epsilon = 10;
    int leftLandscape = 90;
    int rightLandscape = 270;
    if(epsilonCheck(orientation, leftLandscape, epsilon) ||
       epsilonCheck(orientation, rightLandscape, epsilon)){
            getMainActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
        }
    }

    private boolean epsilonCheck(int a, int b, int epsilon) {
        return a > b - epsilon && a < b + epsilon;
    }
};
orientationEventListener.enable();

Answer 3

Firstly put your Auto rotation On from Android setting.

then use the below code on your Activity where you are configuring Video to Landscape mode.

override fun onConfigurationChanged(newConfig: Configuration) { super.onConfigurationChanged(newConfig)

    if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
        // if you tilt your screen to Portrait mode
         // send your seek position with intent to continue watching video to your previous screen
           finish()
    }else{
       // continue to playing video
    }
}

In your manifest file put screenOrientation to "fullSensor" like below:

android:configChanges="keyboard|keyboardHidden|orientation|screenSize|screenLayout|smallestScreenSize|uiMode"
        android:screenOrientation="fullSensor"