CODEWITHSUNDEEP
android
padam thapa
padam thapa

Reputation: 1477

Locking screen orientation to its (natural) default orientation

I wanted to lock orientation of screen to its default orinetation. I have having problem on achieving this. Initially I locked screen to portrait from manifest. It works fine for portrait defaultdevices.

But many tablets have landscape as default so in these devices locking to portrait is not suitable, I want to detect this default orientation and lock it. I mean if landscape is default orientation I want to lock the orientation to landscape and if its portrait then lock it to port. How to do this? I don't want to support both orientation (auto).

Upvotes: 3

Views: 2334

Answers (3)

PoOk
PoOk

Reputation: 655

To lock the screen by code you have to use the actual rotation of the screen (0, 90, 180, 270) and you have to know the natural position of it, in a smartphone the natural position will be portrait and in a tablet, it will be landscape.

Here's the code (lock and unlock methods), it has been tested in 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);
}

Upvotes: 0

BigBen3216
BigBen3216

Reputation: 867

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 orientation of the display you get the following values :

enter image description here

said so, what you have to do in your locking method is the following:

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;
            }

        } 

    }
}

Upvotes: 1

ρяσѕρєя K
ρяσѕρєя K

Reputation: 132972

try this one lock screen to default

Lockorientationactivity :

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 you must set android:configChanges="orientation" for activity.

Upvotes: 0

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