Force “portrait” orientation mode

Question

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.

Answer 1

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.

Answer 2

Something to complement: I have updated an app recently, the previous was working in both landscape and portrait mode, and I want the updated version should work in portrait mode, so I added

android:screenOrientation="portrait"

to the corresponding activity, and it just crashed when I tested the update. Then I added

android:configChanges="orientation|keyboardHidden"

too, and it works.

Answer 3

I think you want to add android:configChanges="orientation|keyboardHidden" to your activity? Otherwise the activity is restarted on config-change. The onConfigurationChanged would not be called then, only the onCreate

Answer 4

Set force Portrait or Landscape mode, Add lines respectively.

Import below line:

import android.content.pm.ActivityInfo;

Add Below line just above setContentView(R.layout.activity_main);

For Portrait:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//Set Portrait

For Landscap:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//Set Landscape

This will definitely work.

Answer 5

According to Android's documentation, you should also often include screenSize as a possible configuration change.

android:configChanges="orientation|screenSize"

If your application targets API level 13 or higher (as declared by the minSdkVersion and targetSdkVersion attributes), then you should also declare the "screenSize" configuration, because it also changes when a device switches between portrait and landscape orientations.

Also, if you all include value keyboardHidden in your examples, shouldn't you then also consider locale, mcc, fontScale, keyboard and others?..