IllegalArgumentException beim Aufruf neuer Aktivität

Question

In meiner MainActivity habe ich ein Fragment, das ich durch eine andere Fragmentklasse ersetze.

ersetzen Fragment in MainActivity:

getSupportFragmentManager().beginTransaction() 
       .replace(R.id.container, MainFragment.newInstance()) 
       .commit(); 

XML von MainActivity:

<?xml version="1.0" encoding="utf-8"?> 
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:id="@+id/main_content" 
android:layout_width="match_parent" 
android:layout_height="match_parent"> 

<android.support.design.widget.AppBarLayout 
    android:id="@+id/appBar" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:theme="@style/ThemeOverlay.AppCompat.ActionBar"> 

    <android.support.v7.widget.Toolbar 
     android:id="@+id/toolbar" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:background="?attr/colorPrimary" 
     android:minHeight="?attr/actionBarSize" 
     app:layout_scrollFlags="scroll|enterAlways" 
     app:titleTextColor="@android:color/white" /> 
</android.support.design.widget.AppBarLayout> 

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/container" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior"> 
</FrameLayout> 

Dies funktioniert gut.

Das Problem ist jetzt in meiner Fragment-Klasse. Ich möchte eine neue Activity (DetailRfrdPastActivity) von der Fragmentklasse aufrufen. Sobald ich ein Element der DetailRfrdPastActivity XML hinzufügen stoppt die App mit dem folgenden Fehler:

java.lang.IllegalArgumentException: No view found for id 0x7f0c0071 (com.scherrer.robin.chvote:id/touch_outside) for fragment MainFragment{610d48e #0 id=0x7f0c0071} at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1098) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1286) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:758) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1671) at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:532) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

In der Fragment-Klasse I die Aktivität wie folgt beginnen:

public class MainFragment extends Fragment implements SearchView.OnQueryTextListener, FlexibleAdapter.OnItemClickListener { 

public static MainFragment newInstance() { 
    return new MainFragment(); 
} 

private RecyclerView mRecyclerView; 
private FlexibleAdapter<IFlexible> mAdapter; 
private List<IFlexible> originalItems; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    final View view = inflater.inflate(R.layout.fragment_main, container, false); 

    mRecyclerView = (RecyclerView) view.findViewById(R.id.lvRef); 

    return view; 
} 

@Override 
public void onViewCreated(View view, Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 
    setHasOptionsMenu(true); 

    this.mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); 

    originalItems = AdapterData.getRfrdList(); 

    mAdapter = new FlexibleAdapter<>(AdapterData.getRfrdList()); 
    mAdapter.showAllHeaders(); 
    mAdapter.initializeListeners(this); 

    mRecyclerView.setAdapter(mAdapter); 
    mAdapter.enableStickyHeaders(); 
} 

@Override 
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 
    inflater.inflate(R.menu.menu_main, menu); 

    final MenuItem item = menu.findItem(R.id.action_search); 
    final SearchView searchView = (SearchView) MenuItemCompat.getActionView(item); 
    searchView.setOnQueryTextListener(this); 
} 

@Override 
public boolean onQueryTextChange(String query) { 
    List<IFlexible> copyOriginalItems = new ArrayList<>(originalItems); 

    mAdapter.setSearchText(query); 
    mAdapter.filterItems(copyOriginalItems); 

    return true; 
} 

@Override 
public boolean onQueryTextSubmit(String query) { 
    return false; 
} 

@Override 
public boolean onItemClick(int itemPosition) { 
    IFlexible clickedItem = mAdapter.getItem(itemPosition); 

    if (clickedItem instanceof ItemRfrdPast) { 
     Intent detailRfrdPast = new Intent(getActivity().getApplicationContext(), DetailRfrdPastActivity.class); 
     detailRfrdPast.putExtra("pastRfrd", ((ItemRfrdPast) clickedItem).getPastRfrd()); 
     getActivity().startActivity(detailRfrdPast); 
    } 

    return true; 
} 

}

XML von Fragment:

<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent"> 

<android.support.v7.widget.RecyclerView 
    android:id="@+id/lvRef" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:scrollbars="vertical" /> 

<include layout="@layout/sticky_header_layout"/> 

Die DetailRfrdPastActivity ist die untergeordnete Aktivität von MainActivity. Ich kann nicht herausfinden, wo der Fehler liegt, weil das Fragment und die aufgerufene Aktivität nichts miteinander zu tun haben sollen.

Manifest:

<?xml version="1.0" encoding="utf-8"?> 

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.WAKE_LOCK" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.READ_PHONE_STATE" /> 

<application 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity 
     android:name=".activities.MainActivity" 
     android:launchMode="singleTop" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity 
     android:name=".activities.DetailRfrdPastActivity" 
     android:parentActivityName=".activities.MainActivity" > 

    </activity> 
</application> 

Answer 1

ftw, ich denke, dass eine OnClickListener vom ViewHolder Einstellung und einen Rückruf mit dem gewählten Artikel aufrufen wird gut tun.

Zum Beispiel:

Von FlexibleAdapter Klasse

public interface OnIFlexibleClickListener { 

    void onIFlexibleClick(IFlexible iFlexible); 

} 

private OnIFlexibleClickListener listener; 

public setOnIFlexibleClickListener(OnIFlexibleClickListener listener) { 
    this.listener = listener; 
} 

public IFlexible getIFlexible(int position) { 
     return iFlexibleList.get(position); //Your iFlexible List 
} 

public class FindViewHolder extends RecyclerView.ViewHolder { 
    private TextView textView; //Replace the TextView with your own view. 

    public FindViewHolder(View itemView) { 
     super(itemView); 
     textView = (TextView) itemView; 
     textView.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       if (listener != null) { 
        listener.onIFlexibleClick(getIFlexible(getAdapterPosition())); 
       } 
      } 
     }); 
    } 
} 

Von MainFragment Klasse implementieren OnIFlexibleClickListener

@Override 
public void onIFlexibleClick(IFlexible iFlexible) { 
    if (iFlexible instanceof ItemRfrdPast) { 
     ItemRfrdPast itemRfrdPast = ((ItemRfrdPast) iFlexible).getPastRfrd() 

     Intent intent = new Intent(getContext(), DetailRfrdPastActivity.class); 
     intent.putExtra(PAST_RFRD, itemRfrdPast); //public static final String PAST_RFRD = "pastRfrd"; 
     getActivity().startActivityForResult(intent, DetailRfrdPastActivity.REQUEST_CODE); //create a public static final int REQUEST_CODE 
    } 
} 

Ich denke, das sollte es beheben. Prost.

Answer 2

Es zeigt, dass eine Ansicht von id: id/touch_outside von Ihrem MainFragment XML-Datei fehlt. Bitte überprüfen Sie diese ID in Ihrem XML sowie die mitgelieferten XMLs

Answer 3

ersetzen

getSupportFragmentManager().beginTransaction() 

mit

getChildFragmentManager().beginTransaction() 

Warum ist so?

May be because it can't find the Fragment with the given ID because it's in a different FragmentManager .

beziehen sich die difference