Force "portrait" orientation mode

I'm trying to force the "portrait" mode for my application because my application is absolutely not designed for the "landscape" mode.

After reading some forums, I added these lines in my manifest file:

<application 
  android:debuggable="true"
  android:icon="@drawable/icon" 
  android:label="@string/app_name"
  android:screenOrientation="portrait">

But it doesn't work on my device (HTC Desire). It switches from "portrait" lo "landscape", ignoring the lines from the manifest file.

After more forums reading, I tried to add this in my manifest file:

<application 
  android:debuggable="true"
  android:icon="@drawable/icon" 
  android:label="@string/app_name"
  android:configChanges="orientation"       
  android:screenOrientation="portrait">

and this function in my activity class:

public void onConfigurationChanged(Configuration newConfig)
{
    super.onConfigurationChanged(newConfig);
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}

But again, no luck.

Solution 1:

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.

Solution 2:

Note that

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

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

Solution 3:

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.