Snap the screen orientation to its default (natural) orientation
I wanted to lock the default screen orientation. I have a problem achieving this. Initially, I locked the screen before the portrait from the manifest. It works great for defaultdevices portraits. But many tablets have a default landscape, so portrait lock is not suitable in these devices, I want to define this default orientation and lock it. I mean, if the default orientation is the default - I want to lock the orientation to the landscape, and if her portrait then will lock it to the port. How to do it. I am stuck at this part. I don't want to maintain orientation (auto). Please, help
Thank.
+3
source to share
3 answers
There is a default orientation for different devices, for example, the default orientation on a Galaxy 10 tablet is different from a Nexus 7 tablet. When you get the display orientation, you get the following values:
said this what you should do in your blocking method:
public void mLockScreenRotation(FA_Padre actividad){
int buildVersionSDK = Build.VERSION.SDK_INT;
Display display = ((WindowManager) actividad.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int orientation=0;
if(buildVersionSDK >= 8){
orientation=display.getRotation();
}
/****************Phone*************************************/
if(buildVersionSDK < 8){// older Android versions with only two orientations
switch (actividad.getResources().getConfiguration().orientation){
case Configuration.ORIENTATION_PORTRAIT:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
case Configuration.ORIENTATION_LANDSCAPE:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
}
}else if((buildVersionSDK > 7 ) && (!GlobalInfo.isTablet())){// Newer Android phones with more than two orientations
switch(orientation){
case Surface.ROTATION_0:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
case Surface.ROTATION_90:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_180:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
case Surface.ROTATION_270:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
}
/****************TABLET*************************************/
}else{
int width = 0;
int height = 0;
switch(orientation){
/*If the default orientation of the device is landscape Rotation_0 and rotation_180 will be the case if the device is being held in landscape. if the default orientation of the device is portrait rotation_0 or 180 will only be the case if the device is in portrait mode*/
case Surface.ROTATION_0:
case Surface.ROTATION_180:
width = display.getWidth();
height = display.getHeight();
break;
/*the opposite in here*/
case Surface.ROTATION_90: //
case Surface.ROTATION_270:
width = display.getHeight();
height = display.getWidth();
break;
default:
break;
}
if(width > height){//Default ORIENTATION = LANDSCAPE, lock the screen in the current orientation
switch(orientation){
case Surface.ROTATION_0:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_90:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
break;
case Surface.ROTATION_180:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
case Surface.ROTATION_270:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
}
} else {//Default ORIENTATION = PORTRAIT, lock the screen in the current orientation
switch(orientation){
case Surface.ROTATION_0:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
case Surface.ROTATION_90:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_180:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
break;
case Surface.ROTATION_270:
actividad.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
}
}
}
}
+1
source to share
try this default lock screen
Blocking activity :
public class Lockorientationactivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
int getConf=this.getResources().getConfiguration().orientation;
if(getConf==Configuration.ORIENTATION_PORTRAIT)
{
this.setRequestedOrientation(
ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
Toast.makeText(getBaseContext(), "ORIENTATION_PORTRAIT", Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getBaseContext(), "ORIENTATION_LANDSCAPE", Toast.LENGTH_SHORT).show();
this.setRequestedOrientation(
ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
setContentView(R.layout.main);
}
}
But to be active, you must install android:configChanges="orientation"
.
0
source to share
To lock the screen by code, you must use the actual rotation of the screen (0, 90, 180, 270), and you must know its natural position, in a smartphone the natural position will be a portrait and in a tablet it will be a landscape.
Here's the code (lock and unlock), it has been tested on some devices (smartphones and tablets) and it works great.
public static void lockScreenOrientation(Activity activity)
{
WindowManager windowManager = (WindowManager) activity.getSystemService(Context.WINDOW_SERVICE);
Configuration configuration = activity.getResources().getConfiguration();
int rotation = windowManager.getDefaultDisplay().getRotation();
// Search for the natural position of the device
if(configuration.orientation == Configuration.ORIENTATION_LANDSCAPE &&
(rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) ||
configuration.orientation == Configuration.ORIENTATION_PORTRAIT &&
(rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270))
{
// Natural position is Landscape
switch (rotation)
{
case Surface.ROTATION_0:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_90:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
break;
case Surface.ROTATION_180:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
case Surface.ROTATION_270:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
}
}
else
{
// Natural position is Portrait
switch (rotation)
{
case Surface.ROTATION_0:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
case Surface.ROTATION_90:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_180:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
break;
case Surface.ROTATION_270:
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
}
}
}
public static void unlockScreenOrientation(Activity activity)
{
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}
0
source to share