Android-未找到嵌套片段

Question

我有三个片段，它们的排列如下所示：

“片段A和片段C未连接，但是片段B和C连接在一起。每个片段包含1个列表视图，因此，每次触发事件时，它将转到下一个片段。”

片段A --->（内部片段A ）片段B --->（内部片段B ）片段C

• 片段A（main.xml）
• 片段B（R.id.contentFragment）
• 片段C（R.id.contentFragment）

我可以显示Fragment A和Fragment B， 但是可以， 但是如果我从B调用Fragment C，则会收到"No view found in contentFragment=0x7f040039" 。

Main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:orientation="vertical"  
                android:background="@color/white" 
                android:id="@+id/frameLayout"    
                >

            <ListView
            android:id="@android:id/list"
            android:layout_width="fill_parent"
            android:layout_alignParentTop="true"
            android:layout_alignParentBottom="true"
            android:layout_height="wrap_content" 
            >
            </ListView>

    <FrameLayout 
    android:id="@+id/contentFragment"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:layout_weight="1" >
     </FrameLayout>


    </FrameLayout>

</FrameLayout>

FragmentA.java

在片段A内以打开片段B

 Fragment fragment1 = new FragmentB();

        FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
        transaction.replace(R.id.contentFragment, fragment1, fragMainGroups );
        transaction.addToBackStack(fragMainGroups);
        transaction.commit(); 

FragmentB.java

在片段B内以打开片段C

     String fragGroups = "groups";

    Fragment fragment1 = new FragmentC();

    FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
    transaction.replace(R.id.contentFragment, fragment1, fragGroups );
    transaction.addToBackStack(fragGroups);
    transaction.commit(); 

片段C.java

片段C内部

   public class FragmentItems extends ListFragment{

    public void onAttach(Activity activity) {
        super.onAttach(activity);
    }
            public void onActivityCreated(Bundle savedInstanceState) {
                super.onActivityCreated(savedInstanceState);
            }

            public void onCreate(Bundle e)
            {
                super.onCreate(e);
            }

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

                    return rootView;
                }
}

Logcat

07-25 18:10:20.388: E/FragmentManager(24703): No view found for id 0x7f040039 (com.jinisys.restoplusordering:id/contentFragment) for fragment FragmentItems{4156f480 #0 id=0x7f040039 groups}
07-25 18:10:20.388: E/FragmentManager(24703): Activity state:

07-25 18:10:20.388: E/FragmentManager(24703): No view found for id 0x7f040039 (com.jinisys.restoplusordering:id/contentFragment) for fragment FragmentItems{4156f480 #0 id=0x7f040039 groups}
07-25 18:10:20.388: E/FragmentManager(24703): Activity state:
07-25 18:10:20.718: E/AndroidRuntime(24703): FATAL EXCEPTION: main
07-25 18:10:20.718: E/AndroidRuntime(24703): java.lang.IllegalArgumentException: No view found for id 0x7f040039 (com.jinisys.restoplusordering:id/contentFragment) for fragment FragmentItems{4156f480 #0 id=0x7f040039 groups}
07-25 18:10:20.718: E/AndroidRuntime(24703):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:903)
07-25 18:10:20.718: E/AndroidRuntime(24703):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
07-25 18:10:20.718: E/AndroidRuntime(24703):    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
07-25 18:10:20.718: E/AndroidRuntime(24703):    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
07-25 18:10:20.718: E/AndroidRuntime(24703):    at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:429)
07-25 18:10:20.718: E/AndroidRuntime(24703):    at android.os.Handler.handleCallback(Handler.java:615)

Answer 1

由于错误状态，您正在寻找一个在片段B内具有id contentFragmentTtems视图，其主视图是contentFragment而不是整个main.xml 。 因此，如果要添加新片段，也应从片段A中进行操作。

Answer 2

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:orientation="vertical"  
                android:background="@color/white" 
                android:id="@+id/frameLayout"    
                >

            <ListView
            android:id="@android:id/list"
            android:layout_width="fill_parent"
            android:layout_alignParentTop="true"
            android:layout_alignParentBottom="true"
            android:layout_height="wrap_content" 
            >
            </ListView>

    <FrameLayout 
    android:id="@+id/contentFragmentb"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:layout_weight="1" >
     </FrameLayout>
<FrameLayout 
    android:id="@+id/contentFragmentc"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:layout_weight="1" >
     </FrameLayout>

    </FrameLayout>

</FrameLayout>

这应该工作。