android - 使用 Google map 时应用程序因 FragmentManager Replace 而崩溃

Question

我使用以下代码加载 fragment ，具体取决于在 NavigationDrawer 上选择了哪个项目，但是 MapFragment 内部包含 Google map fragment ，并且在第二次尝试打开它后崩溃。

这是我使用的代码:

@Override
    public void onNavigationDrawerItemSelected(int position) {
        // update the main content by replacing fragments
        FragmentManager fragmentManager = getSupportFragmentManager();
        if (position == 0) {
            fragmentManager.beginTransaction()
                    .replace(R.id.container, MapFragment.newInstance("a", "b"))
                    .commit();

        }
        else {
            fragmentManager.beginTransaction()
                    .replace(R.id.container, PlaceholderFragment.newInstance(position + 1))
                    .commit();
        }
    }

这是日志:

03-01 14:18:25.870  27175-27175/com.br.appname E/﹕ Device driver API match
    Device driver API version: 23
    User space API version: 23
03-01 14:18:25.870  27175-27175/com.br.appname E/﹕ mali: REVISION=Linux-r3p2-01rel3 BUILD_DATE=Wed Oct 30 09:36:10 KST 2013
03-01 14:19:12.655  27175-27175/com.br.appname E/AndroidRuntime﹕ FATAL EXCEPTION: main
    android.view.InflateException: Binary XML file line #13: Error inflating class fragment
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:769)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
            at com.br.appname.fragments.MapFragment.onCreateView(MapFragment.java:74)
            at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
            at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
            at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
            at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:440)
            at android.os.Handler.handleCallback(Handler.java:730)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5419)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1209)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1025)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.IllegalArgumentException: Binary XML file line #13: Duplicate id 0x7f070055, tag null, or parent id 0x7f070054 with another fragment for com.google.android.gms.maps.MapFragment
            at android.app.Activity.onCreateView(Activity.java:4971)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:695)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:769)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
            at com.br.appname.fragments.MapFragment.onCreateView(MapFragment.java:74)
            at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
            at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
            at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
            at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:440)
            at android.os.Handler.handleCallback(Handler.java:730)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5419)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1209)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1025)
            at dalvik.system.NativeStart.main(Native Method)

这只发生在 MapFragment 上。 PlaceholderFragment 工作正常。

更新

fragment 映射.xml

<RelativeLayout 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"
    tools:context="com.br.remotepark.fragments.MapFragment">

    <com.sothree.slidinguppanel.SlidingUpPanelLayout
        android:id="@+id/sliding_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="bottom">

        <fragment
            android:id="@+id/map"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:name="com.google.android.gms.maps.MapFragment" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#eee"
            android:orientation="vertical"
            android:clickable="true"
            android:focusable="false">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="68dp"
                android:orientation="horizontal">

                <TextView
                    android:id="@+id/name"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:textSize="14sp"
                    android:gravity="center_vertical"
                    android:paddingLeft="10dp" />

                <Button
                    android:id="@+id/follow"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
                    android:textSize="14sp"
                    android:gravity="center_vertical|right"
                    android:paddingRight="10dp"
                    android:paddingLeft="10dp" />

            </LinearLayout>
        </LinearLayout>

    </com.sothree.slidinguppanel.SlidingUpPanelLayout>

</RelativeLayout>

Answer 1

重复 ID 问题与使用嵌套 fragment 的不正确方式有关。

发件人:http://developer.android.com/about/versions/android-4.2.html#NestedFragments

Note: You cannot inflate a layout into a fragment when that layout includes a <fragment>. Nested fragments are only supported when added to a fragment dynamically.

所以你的 fragment_map.xml不能直接包含 com.google.android.gms.maps.MapFragment .将其替换为 FrameLayout ID map_container并尝试这样的事情:

public class MyFragmentWithMap extends Fragment {

    private MapFragment fragment;
    private GoogleMap map;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_map, container, false);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        FragmentManager fm = getChildFragmentManager();
        fragment = (MapFragment) fm.findFragmentById(R.id.map_container);
        if (fragment == null) {
            fragment = MapFragment.newInstance();
            fm.beginTransaction().replace(R.id.map_container, fragment).commit();
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        setUpMapIfNeeded();
    }

    // ...
}

注意 getChildFragmentManager 的使用.