android - fragment 对话框中的 fragment 膨胀引发错误 "Fragment did not create a view"

Question

用户单击一个按钮，该按钮会弹出一个 fragment 对话框，该对话框会像这样扩充 fragment :

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        View view = getActivity().getLayoutInflater().inflate(
                R.layout.monday_fragment, null);
        builder.setView(view).setTitle("Homework Due Monday")
                .setNegativeButton("Dismiss", null);

        AlertDialog dialog = builder.create();
        dialog.show();

这是指定布局的 xml (monday_fragment.xml)，其中引用了要扩充的 fragment :

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    >

    <fragment
        android:id="@+id/monday_fragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:name="com.bernard.beaconportal.activities.schedule.daydialogfragments.MondayFragment"
        android:layout_centerHorizontal="true"/>

</RelativeLayout>

fragment 对话框中的 fragment 然后在其 OnCreateView 中扩充自己的布局:

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        swipe = inflater.inflate(R.layout.day_homework_fragment, container,
                false);

        lView = (ListView) swipe.findViewById(R.id.listView1);

        progress = (ProgressBar) swipe.findViewById(R.id.progress);

        lView.setVisibility(View.GONE);

        return swipe;

    }

这是在 fragment 中膨胀的“day_homework_fragment.xml”布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_gravity="center"
    android:background="@color/light_background">

    <ProgressBar
        android:id="@+id/progress"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="center" />

    <ListView
        android:id="@+id/listView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
         android:background="#ffffff"
         android:divider="@null"
        android:dividerHeight="0dp"
         >
    </ListView>

           <TextView 
           android:id="@+id/emptyView"
           android:layout_width="match_parent"
           android:layout_height="match_parent"
           android:text="As of now, no homework due this day"
           android:padding="30dp" 
           android:textSize="16sp"/>

</LinearLayout>

这是它抛出的错误日志，我已经尝试过这两个 post还有这个post并且都没有解决问题。

  10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime: FATAL EXCEPTION: main
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime: Process: com.bernard.beaconportal.activities, PID: 786
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime: android.view.InflateException: Binary XML file line #10: Error inflating class fragment
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at de.robv.android.xposed.XposedBridge.invokeOriginalMethodNative(Native Method)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at de.robv.android.xposed.XposedBridge.handleHookedMethod(XposedBridge.java:668)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(<Xposed>)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.bernard.beaconportal.activities.schedule.view.MondayView.showDialog(MondayView.java:232)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.bernard.beaconportal.activities.schedule.view.MondayView$1.onClick(MondayView.java:174)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.View.performClick(View.java:4780)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.View$PerformClick.run(View.java:19867)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.os.Handler.handleCallback(Handler.java:739)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:95)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:135)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5338)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:372)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:917)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:115)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:  Caused by: java.lang.IllegalStateException: Fragment com.bernard.beaconportal.activities.schedule.daydialogfragments.MondayFragment did not create a view.
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2273)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:278)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v4.app.BaseFragmentActivityDonut.onCreateView(BaseFragmentActivityDonut.java:44)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:78)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v7.app.AppCompatDelegateImplV7.callActivityOnCreateView(AppCompatDelegateImplV7.java:842)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v7.app.AppCompatDelegateImplV11.callActivityOnCreateView(AppCompatDelegateImplV11.java:34)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:830)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:725)
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at de.robv.android.xposed.XposedBridge.invokeOriginalMethodNative(Native Method) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at de.robv.android.xposed.XposedBridge.handleHookedMethod(XposedBridge.java:668) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(<Xposed>) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.bernard.beaconportal.activities.schedule.view.MondayView.showDialog(MondayView.java:232) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.bernard.beaconportal.activities.schedule.view.MondayView$1.onClick(MondayView.java:174) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.View.performClick(View.java:4780) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.view.View$PerformClick.run(View.java:19867) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.os.Handler.handleCallback(Handler.java:739) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:95) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:135) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5338) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:372) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:917) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704) 
    10-11 01:50:40.657 786-786/com.bernard.beaconportal.activities E/AndroidRuntime:     at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:115) 

编辑:我刚刚意识到这只是在我从 eclipse 转移到 Android Studio 之后才开始发生的。也许这与它有关？可能所有 fragment 引用都搞砸了？

Answer 1

您不能将 fragment 放入标准的 AlertDialog 中。您必须创建一个 DialogFragment 实现来将 fragment 添加到您的对话框中。原因很简单，因为标准 fragment 会尝试将自己附加到相应 Activity 的根窗口，而当 AlertDialog 在根窗口上有一个单独的窗口时，情况就不是这样了。 AlertDialog 不能包含 DialogFragment 甚至 Fragment。尝试将 AlertDialog 代码更改为 DialogFragment 实现。