Created
December 4, 2015 14:03
-
-
Save PavelSynek/64dab386e4930e55c39e to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public abstract class SimpleOrientationListener extends OrientationEventListener { | |
public static final int CONFIGURATION_ORIENTATION_UNDEFINED = Configuration.ORIENTATION_UNDEFINED; | |
private volatile int defaultScreenOrientation = CONFIGURATION_ORIENTATION_UNDEFINED; | |
public int prevOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; | |
private Context ctx; | |
private ReentrantLock lock = new ReentrantLock(true); | |
public SimpleOrientationListener(Context context) { | |
super(context); | |
ctx = context; | |
} | |
public SimpleOrientationListener(Context context, int rate) { | |
super(context, rate); | |
ctx = context; | |
} | |
@Override | |
public void onOrientationChanged(final int orientation) { | |
int currentOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; | |
if (orientation >= 330 || orientation < 30) { | |
currentOrientation = Surface.ROTATION_0; | |
} else if (orientation >= 60 && orientation < 120) { | |
currentOrientation = Surface.ROTATION_90; | |
} else if (orientation >= 150 && orientation < 210) { | |
currentOrientation = Surface.ROTATION_180; | |
} else if (orientation >= 240 && orientation < 300) { | |
currentOrientation = Surface.ROTATION_270; | |
} | |
if (prevOrientation != currentOrientation && orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { | |
prevOrientation = currentOrientation; | |
if (currentOrientation != OrientationEventListener.ORIENTATION_UNKNOWN) | |
reportOrientationChanged(currentOrientation); | |
} | |
} | |
private void reportOrientationChanged(final int currentOrientation) { | |
int defaultOrientation = getDeviceDefaultOrientation(); | |
int orthogonalOrientation = defaultOrientation == Configuration.ORIENTATION_LANDSCAPE ? Configuration.ORIENTATION_PORTRAIT | |
: Configuration.ORIENTATION_LANDSCAPE; | |
int toReportOrientation; | |
if (currentOrientation == Surface.ROTATION_0 || currentOrientation == Surface.ROTATION_180) | |
toReportOrientation = defaultOrientation; | |
else | |
toReportOrientation = orthogonalOrientation; | |
onSimpleOrientationChanged(toReportOrientation); | |
} | |
/** | |
* Must determine what is default device orientation (some tablets can have default landscape). Must be initialized when device orientation is defined. | |
* | |
* @return value of {@link Configuration#ORIENTATION_LANDSCAPE} or {@link Configuration#ORIENTATION_PORTRAIT} | |
*/ | |
private int getDeviceDefaultOrientation() { | |
if (defaultScreenOrientation == CONFIGURATION_ORIENTATION_UNDEFINED) { | |
lock.lock(); | |
defaultScreenOrientation = initDeviceDefaultOrientation(ctx); | |
lock.unlock(); | |
} | |
return defaultScreenOrientation; | |
} | |
/** | |
* Provides device default orientation | |
* | |
* @return value of {@link Configuration#ORIENTATION_LANDSCAPE} or {@link Configuration#ORIENTATION_PORTRAIT} | |
*/ | |
private int initDeviceDefaultOrientation(Context context) { | |
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); | |
Configuration config = context.getResources().getConfiguration(); | |
int rotation = windowManager.getDefaultDisplay().getRotation(); | |
boolean isLand = config.orientation == Configuration.ORIENTATION_LANDSCAPE; | |
boolean isDefaultAxis = rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180; | |
int result = CONFIGURATION_ORIENTATION_UNDEFINED; | |
if ((isDefaultAxis && isLand) || (!isDefaultAxis && !isLand)) { | |
result = Configuration.ORIENTATION_LANDSCAPE; | |
} else { | |
result = Configuration.ORIENTATION_PORTRAIT; | |
} | |
return result; | |
} | |
/** | |
* Fires when orientation changes from landscape to portrait and vice versa. | |
* | |
* @param orientation value of {@link Configuration#ORIENTATION_LANDSCAPE} or {@link Configuration#ORIENTATION_PORTRAIT} | |
*/ | |
public abstract void onSimpleOrientationChanged(int orientation); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment