Android IllegalStateException与谷歌地图api v2

Question

我有一个应用程序，它内部我必须显示一个片段（从v4 suppport库）与地图和里面的位置。我使用的Play服务库，和我创建并包含一个支持地图片段

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

我在我的应用程序的多个片段使用和FrameLayout中，我做出片段交易XML。

我已经定义的位置片段是这样的：当我点击了第一次激活位置片段按钮

import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.RelativeLayout; 
import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.SupportMapFragment; 
import com.google.android.gms.maps.model.BitmapDescriptorFactory; 
import com.google.android.gms.maps.model.LatLng; 
import com.google.android.gms.maps.model.Marker; 
import com.google.android.gms.maps.model.MarkerOptions; 


public class LocationFragment extends Fragment{ 
    static final LatLng HAMBURG = new LatLng(53.558, 9.927); 
    static final LatLng KIEL = new LatLng(53.551, 9.993); 
    RelativeLayout rl; 
    private GoogleMap map=null; 
    @Override 
    public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceBundle) 
    { 
     if (map==null){ 
      rl = (RelativeLayout) inflater.inflate(R.layout.maps, container,false); 
      map = ((SupportMapFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.map)).getMap(); 
      Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG) 
        .title("Hamburg")); 
      Marker kiel = map.addMarker(new MarkerOptions() 
        .position(KIEL) 
        .title("Pilates") 
        .snippet("Pilates teaching") 
        .icon(BitmapDescriptorFactory 
          .fromResource(R.drawable.ic_launcher))); 
      map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15)); 
      map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null); 
     } 
     return rl; 
    } 

} 

一切工作正常。问题出现时，我点击另一个片段，然后在这一个再次，我得到以下错误：

E/AndroidRuntime(30571): FATAL EXCEPTION: main 
E/AndroidRuntime(30571): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 
E/AndroidRuntime(30571): at android.view.ViewGroup.addViewInner(ViewGroup.java:3620) 
E/AndroidRuntime(30571): at android.view.ViewGroup.addView(ViewGroup.java:3491) 
E/AndroidRuntime(30571): at android.view.ViewGroup.addView(ViewGroup.java:3436) 
E/AndroidRuntime(30571): at android.view.ViewGroup.addView(ViewGroup.java:3412) 
E/AndroidRuntime(30571): at android.support.v4.app.NoSaveStateFrameLayout.wrap(NoSaveStateFrameLayout.java:40) 
E/AndroidRuntime(30571): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:915) 
E/AndroidRuntime(30571): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088) 
E/AndroidRuntime(30571): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 
E/AndroidRuntime(30571): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444) 
E/AndroidRuntime(30571): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:429) 
E/AndroidRuntime(30571): at android.os.Handler.handleCallback(Handler.java:615) 
E/AndroidRuntime(30571): at android.os.Handler.dispatchMessage(Handler.java:92) 
E/AndroidRuntime(30571): at android.os.Looper.loop(Looper.java:137) 
E/AndroidRuntime(30571): at android.app.ActivityThread.main(ActivityThread.java:4921) 
E/AndroidRuntime(30571): at java.lang.reflect.Method.invokeNative(Native Method) 
E/AndroidRuntime(30571): at java.lang.reflect.Method.invoke(Method.java:511) 
E/AndroidRuntime(30571): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027) 
E/AndroidRuntime(30571): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794) 
E/AndroidRuntime(30571): at dalvik.system.NativeStart.main(Native Method) 
E/android.os.Debug(2143): !@Dumpstate > dumpstate -k -t -z -d -o /data/log/dumpstate_app_error 

你能帮我吗？

Answer 1

试试这个：

rl = (RelativeLayout) inflater.inflate(R.layout.maps, null);