Force "portrait" orientation mode

Don't apply the orientation to the application element, instead you should apply the attribute to the activity element, and you must also set configChanges as noted below.

Example:

<activity   android:screenOrientation="portrait"   android:configChanges="orientation|keyboardHidden"></activity>

This is applied in the manifest file AndroidManifest.xml.

Note that

android:screenOrientation="portrait"     android:configChanges="orientation|keyboardHidden"

is added in the manifest file - where the activity is defined.

If you are having a lot activity like mine, in your application Or if you dont want to enter the code for each activity tag in manifest you can do this .

in your Application Base class you will get a lifecycle callback

so basically what happens in for each activity when creating the on create in Application Class get triggered here is the code ..

public class MyApplication extends Application{@Override    public void onCreate() {        super.onCreate();    registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {            @Override            public void onActivityCreated(Activity activity, Bundle bundle) {                activity.setRequestedOrientation(                        ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);// for each activity this function is called and so it is set to portrait mode            }            @Override            public void onActivityStarted(Activity activity) {            }            @Override            public void onActivityResumed(Activity activity) {            }            @Override            public void onActivityPaused(Activity activity) {            }            @Override            public void onActivityStopped(Activity activity) {            }            @Override            public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {            }            @Override            public void onActivityDestroyed(Activity activity) {            }        });}

i hope this helps.