java - Android - 未找到嵌套 fragment View

Question

我有三个 Fragments，它们的排列如下所示:

“Frag A 和 Frag C 未连接，但 Frag B 和 C 已连接。每个 fragment 包含 1 个 ListView ，因此每次我触发事件时，它都会转到下一个 fragment 。”

Fragment A ---> (Inside Frag A)Fragment B ---> (Inside Frag B)Fragment C

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

我可以显示 fragment A 和 fragment B 并且没问题，但是如果我从 B 调用 fragment C，我得到“在 contentFragment=0x7f040039 中找不到 View “。

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 fragment A 内打开 fragment B

 Fragment fragment1 = new FragmentB();

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

FragmentB.java

在 fragment B 内打开 fragment C

     String fragGroups = "groups";

    Fragment fragment1 = new FragmentC();

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

FragmentC.java

内部 fragment C

   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

由于您的错误表明您正在 fragment B 中查找 id contentFragmentTtems 的 View ，其主视图是 contentFragment 而不是整个 main.xml 。因此，如果您想添加新 fragment ，您也应该从 fragment A 中执行此操作。