应用程序在恢复应用程序时崩溃

Question

请任何人帮助我，我是 android studio 的新手，我的应用程序在恢复应用程序时崩溃，

我有三种不同的片段布局

 <fragment 
    android:id="@+id/map_online"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/action_bar" /> with different ID.

在恢复应用程序时，我需要加载一个带有地图的片段，

我收到以下错误：

原因：java.lang.IllegalArgumentException: Binary XML file line

39：重复 id 0x7f0f018a、标签 null 或父 id 0xffffffff 与 com.google.android.gms.maps.SupportMapFragment 的另一个片段

请任何人建议如何解决这个问题。

这是我的片段类：

  public class ClientRequestFragment extends Fragment implements  OnMapReadyCallback {

View clientRequestView;
private static final String TAG = ClientRequestFragment.class.getSimpleName();
GoogleMap googleMap;
@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    SupportMapFragment mapFragment = (SupportMapFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.map_online);
    mapFragment.getMapAsync(this);


}
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

    LayoutInflater li = (LayoutInflater) getActivity().getSystemService(
            Context.LAYOUT_INFLATER_SERVICE);

    clientRequestView = li.inflate(R.layout.offline_fragment, container, false);

    return clientRequestView;
}

public void addFragment(Fragment fragment, boolean addToBackStack,
                        String tag, boolean isAnimate) {
    FragmentManager manager = getActivity().getSupportFragmentManager();
    FragmentTransaction ft = manager.beginTransaction();
    if (isAnimate) {
        ft.setCustomAnimations(R.anim.slide_in_right,
                R.anim.slide_out_left, R.anim.slide_in_left,
                R.anim.slide_out_right);
    }

    if (addToBackStack) {
        ft.addToBackStack(tag);
    }
    ft.replace(R.id.content_frame, fragment, tag);
    ft.commitAllowingStateLoss();


}
@Override
public void onClick(View view) {

}

@Override
public void onMapReady(GoogleMap googleMap) {

    this.googleMap = googleMap;
    //googleMap.setMyLocationEnabled(true);
 /*   try {
        // Customise the styling of the base map using a JSON object defined
        // in a raw resource file.
        boolean success = googleMap.setMapStyle(
                MapStyleOptions.loadRawResourceStyle(
                        getActivity(), R.raw.retro_style_json));

        if (!success) {
            Log.e(TAG, "Style parsing failed.");
        }
    } catch (Resources.NotFoundException e) {
        Log.e(TAG, "Can't find style. Error: ", e);
    }*/


} 

@Override
public void onDestroyView() {
    super.onDestroyView();
     FragmentManager fm = getActivity().getSupportFragmentManager();
    Fragment fragment = (fm.findFragmentById(R.id.map_online));
    FragmentTransaction ft = fm.beginTransaction();
    ft.remove(fragment);
    ft.commit();

}

@Override
public void onPause() {
    super.onPause();


}

}

谢谢。

Answer 1

您的应用程序崩溃，因为 Fragment 内的静态 Fragment 无法删除或替换，您只能隐藏或显示此静态 Fragment。 使您的 xml 文件如下所示：

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/coreLayout"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_vertical">

        <FrameLayout
            android:id="@+id/fragment_home_container"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

</LinearLayout>

在你的 fragment.java 文件中写下这段代码：

 PlaceAutocompleteFragment autocompleteFragmentSourceAddress = new PlaceAutocompleteFragment();
  replaceFragment(autocompleteFragmentSourceAddress, R.id.fragment_home_container);

Answer 2

在重新创建片段视图中的新片段之前，您需要删除片段，因此在onCreatedView 方法中添加==null 条件，

View mainView;// this should be global variable.

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        if(mainview==null){
           mainView = inflater.inflate(R.layout.fragment_layout, container, false);
           initializeView();//initialize all views in this method instead of onActivityCreated 
        }
        return mainView;
    }

当你推送上面的片段时添加这个以避免重复

try {
     android.app.Fragment fragment = getFragmentManager().findFragmentById(R.id.map_online);
     if (fragment != null) {
         android.app.FragmentTransaction ft = getFragmentManager().beginTransaction();
         ft.remove(fragment);
         ft.commit();
     }
} catch (Exception e) {
  e.printStackTrace();
}