IllegalStateException: DialogFragment non può essere collegato a una vista container - (in ActionBarActivity)

Question

Nel mio attività (che si estende android.support.v7.app.ActionBarActivity) Ho un frammento che è normalmente includere nel mio punto di vista come questo :

<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    > 
    <fragment 
     android:name="com.fragments.SomeFragment" 
     android:id="@+id/fragment_id" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     /> 
</FrameLayout> 

Che funzioni bene.

Ma ho deciso di riutilizzare questo frammento come una finestra di dialogo, quindi l'ho esteso da android.support.v4.app.DialogFragment (dalla libreria supportata).

Senza altre modifiche ottengo l'eccezione

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ExampleActivity}: java.lang.IllegalStateException: DialogFragment can not be attached to a container view 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
at android.app.ActivityThread.access$600(ActivityThread.java:141) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:137) 
at android.app.ActivityThread.main(ActivityThread.java:5041) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:511) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
at dalvik.system.NativeStart.main(Native Method) 

    Caused by: java.lang.IllegalStateException: DialogFragment can not be attached to a container view 
at android.support.v4.app.DialogFragment.onActivityCreated(DialogFragment.java:364) 
at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1486) 
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947) 
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104) 
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1086) 
at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1877) 
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:552) 
at com.*.RoboActionBarActivity.onStart(RoboActionBarActivity.java:58) 
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1164) 
at android.app.Activity.performStart(Activity.java:5114) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2153) 
... 11 more 

Come posso risolvere questo problema o utilizzare il mio frammento standard, come una finestra?

La mia attività:

public class SomeActivity extends RoboActionBarActivity{ 

    private SomeFragment someFragment; 

    @Override 
    protected void onCreate(final Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.actvity_some); 

     this.someFragment = (SomeFragment) getSupportFragmentManager().findFragmentById(
      R.id.fragment_id); 
    } 
} 

RoboActionBarActivity è un ActionBarActivity che implementa RoboContext (da RoboGuice) per consentire l'iniezione.

public class RoboActionBarActivity extends ActionBarActivity implements RoboContext { 
private EventManager eventManager; 
private final HashMap<Key<?>, Object> scopedObjects = new HashMap<Key<?>, Object>(); 

@Inject 
private ContentViewListener ignored; // BUG find a better place to put this 

@Override 
protected void onCreate(final Bundle savedInstanceState) { 
    final RoboInjector injector = RoboGuice.getInjector(this); 
    this.eventManager = injector.getInstance(EventManager.class); 
    injector.injectMembersWithoutViews(this); 
    super.onCreate(savedInstanceState); 
    this.eventManager.fire(new OnCreateEvent(savedInstanceState)); 
} 

@Override 
protected void onRestart() { 
    super.onRestart(); 
    this.eventManager.fire(new OnRestartEvent()); 
} 

@Override 
protected void onStart() { 
    super.onStart(); 
    this.eventManager.fire(new OnStartEvent()); 
} 

@Override 
protected void onResume() { 
    super.onResume(); 
    this.eventManager.fire(new OnResumeEvent()); 
} 

@Override 
protected void onPause() { 
    super.onPause(); 
    this.eventManager.fire(new OnPauseEvent()); 
} 

@Override 
protected void onNewIntent(final Intent intent) { 
    super.onNewIntent(intent); 
    this.eventManager.fire(new OnNewIntentEvent()); 
} 

@Override 
protected void onStop() { 
    try { 
     this.eventManager.fire(new OnStopEvent()); 
    } finally { 
     super.onStop(); 
    } 
} 

@Override 
protected void onDestroy() { 
    try { 
     this.eventManager.fire(new OnDestroyEvent()); 
    } finally { 
     try { 
      RoboGuice.destroyInjector(this); 
     } finally { 
      super.onDestroy(); 
     } 
    } 
} 

@Override 
public void onConfigurationChanged(final Configuration newConfig) { 
    final Configuration currentConfig = getResources().getConfiguration(); 
    super.onConfigurationChanged(newConfig); 
    this.eventManager.fire(new OnConfigurationChangedEvent(currentConfig, newConfig)); 
} 

@Override 
public void onContentChanged() { 
    super.onContentChanged(); 
    RoboGuice.getInjector(this).injectViewMembers(this); 
    this.eventManager.fire(new OnContentChangedEvent()); 
} 

@Override 
protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    this.eventManager.fire(new OnActivityResultEvent(requestCode, resultCode, data)); 
} 

@Override 
public Map<Key<?>, Object> getScopedObjectMap() { 
    return this.scopedObjects; 
} 
} 

Answer 1

So che questo è stato chiesto qualche tempo fa, ma il modo in cui ho aggirato questo è stato quello di creare il mio frammento dinamicamente piuttosto che in XML. Probabilmente c'è una soluzione migliore ma questo ha funzionato per me.

public class MyActivity { 

    private MyFragment mMyFragment; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     if (savedInstanceState == null) { 
      mMyFragment = new MyFragment(); 
      if (mMyFragment != null) { 
       FragmentManager fragmentManager = getSupportFragmentManager(); 
       fragmentManager.beginTransaction() 
        .add(android.R.id.content, mMyFragment) 
        .commit(); 
      } 
     } 
    } 
} 

Answer 2

È possibile correggere questo problema se si richiama setShowsDialog(false) da qualche parte in onCreate() all'interno del vostro DialogFragment.

Ma è necessario richiamare setShowsDialog(true) quando si desidera utilizzare questo frammento come finestra di dialogo.