Screen orientation lock

Question

Is there a reliable way to lock screen orientation on all Android devices? The code below works for my Nexus S and other phones, but for some reason ROTATION_90 corresponds to SCREEN_ORIENTATION_REVERSE_PORTRAIT on the Xoom.

Is there any way to reliably map rotation to orientation?

private void lockScreenOrientation() {     if (!mScreenOrientationLocked) {         final int orientation = getResources().getConfiguration().orientation;         final int rotation = getWindowManager().getDefaultDisplay().getOrientation();          if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90) {             if (orientation == Configuration.ORIENTATION_PORTRAIT) {                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);             }             else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);             }         }         else if (rotation == Surface.ROTATION_180 || rotation == Surface.ROTATION_270) {             if (orientation == Configuration.ORIENTATION_PORTRAIT) {                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);             }             else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);             }         }          mScreenOrientationLocked = true;     } }  private void unlockScreenOrientation() {     setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);     mScreenOrientationLocked = false; } 

EDIT: This code is meant to get the current orientation and lock it. The orientation is locked temporarily, and then released to the user.

Answer 1

Here is my solution it works on phones and tablets in any Android SDK.

switch (getResources().getConfiguration().orientation){         case Configuration.ORIENTATION_PORTRAIT:             if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.FROYO){                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);             } else {                 int rotation = getWindowManager().getDefaultDisplay().getRotation();                 if(rotation == android.view.Surface.ROTATION_90|| rotation == android.view.Surface.ROTATION_180){                     setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);                 } else {                     setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);                 }             }            break;          case Configuration.ORIENTATION_LANDSCAPE:             if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.FROYO){                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);             } else {                 int rotation = getWindowManager().getDefaultDisplay().getRotation();                 if(rotation == android.view.Surface.ROTATION_0 || rotation == android.view.Surface.ROTATION_90){                     setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);                 } else {                     setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);                 }             }         break;     } 

Answer 2

I modified diyism's answers slightly to compensate for the fact that you can't use reverse_landscape and reverse_portrait modes before version 2.3

private static void disableRotation(Activity activity) {            final int orientation = activity.getResources().getConfiguration().orientation;     final int rotation = activity.getWindowManager().getDefaultDisplay().getOrientation();      // Copied from Android docs, since we don't have these values in Froyo 2.2     int SCREEN_ORIENTATION_REVERSE_LANDSCAPE = 8;     int SCREEN_ORIENTATION_REVERSE_PORTRAIT = 9;      if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.FROYO)     {         SCREEN_ORIENTATION_REVERSE_LANDSCAPE = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;         SCREEN_ORIENTATION_REVERSE_PORTRAIT = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;     }      if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90)     {         if (orientation == Configuration.ORIENTATION_PORTRAIT)         {             activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);         }         else if (orientation == Configuration.ORIENTATION_LANDSCAPE)         {             activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);         }     }     else if (rotation == Surface.ROTATION_180 || rotation == Surface.ROTATION_270)      {         if (orientation == Configuration.ORIENTATION_PORTRAIT)          {             activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_PORTRAIT);         }         else if (orientation == Configuration.ORIENTATION_LANDSCAPE)          {             activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_LANDSCAPE);         }     } }  private static void enableRotation(Activity activity) {     activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED); }