IllegalStateException:DialogFragment无法附加到容器视图 - (在ActionBarActivity中)

Question

在我的Activity(扩展android.support.v7.app.ActionBarActivity)中,我有一个片段,通常包含在我的视图中,如下所示:

<?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>

这很好用.

但是我决定将这个片段重用为对话框,所以我通过android.support.v4.app.DialogFragment(来自支持的库)扩展它.

没有任何其他更改我得到了例外

 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

如何解决此问题或将我的标准片段用作对话框？

我的活动:

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是一个ActionBarActivity,它实现RoboContext(来自RoboGuice)以启用注入.

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

我知道不久前有人问过这个问题，但我解决这个问题的方法是动态创建我的片段，而不是在 xml 中。可能有更好的解决方案，但这对我有用。

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();
            }
        }
    }
}