Java 嵌套的SupportMapFragment
添加支持映射片段时出现以下异常Java 嵌套的SupportMapFragment,java,android,google-maps-api-3,map,Java,Android,Google Maps Api 3,Map,添加支持映射片段时出现以下异常 05-22 23:51:12.817: E/AndroidRuntime(4515): java.lang.NullPointerException 05-22 23:51:12.817: E/AndroidRuntime(4515): at kbh.a(Unknown Source) 05-22 23:51:12.817: E/AndroidRuntime(4515): at mbi.a(Unknown Source) 05-22 23:51:1
05-22 23:51:12.817: E/AndroidRuntime(4515): java.lang.NullPointerException
05-22 23:51:12.817: E/AndroidRuntime(4515): at kbh.a(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at mbi.a(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at lxn.a(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at lxm.a(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at fnb.onTransact(SourceFile:107)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.os.Binder.transact(Binder.java:361)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.google.android.gms.maps.internal.IMapFragmentDelegate$a$a.onCreateView(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.google.android.gms.maps.SupportMapFragment$a.onCreateView(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.google.android.gms.dynamic.a$4.b(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.google.android.gms.dynamic.a.a(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.google.android.gms.dynamic.a.onCreateView(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.google.android.gms.maps.SupportMapFragment.onCreateView(Unknown Source)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.Fragment.performResume(Fragment.java:1550)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:963)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:440)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.os.Handler.handleCallback(Handler.java:733)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.os.Handler.dispatchMessage(Handler.java:95)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.os.Looper.loop(Looper.java:136)
05-22 23:51:12.817: E/AndroidRuntime(4515): at android.app.ActivityThread.main(ActivityThread.java:5102)
05-22 23:51:12.817: E/AndroidRuntime(4515): at java.lang.reflect.Method.invokeNative(Native Method)
05-22 23:51:12.817: E/AndroidRuntime(4515): at java.lang.reflect.Method.invoke(Method.java:515)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
05-22 23:51:12.817: E/AndroidRuntime(4515): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
05-22 23:51:12.817: E/AndroidRuntime(4515): at dalvik.system.NativeStart.main(Native Method)
这在应用程序上随机发生。它可以正常工作一次,两次甚至三次,然后崩溃。
有时地图会出现,但随后会崩溃
非常感谢看来,您不能拥有一个包含SupportMapFragment的嵌套片段 我所做的如下:
MainFragment extends Fragment;
FirstChildFragment extends Fragment;
MapFragment extends Fragment;
主片段,它是主片段,它将有子片段要显示。
FirstChildFragment是另一个片段,它被保存在MainFragment中,最后MapFragment被保存在FirstChildFragment中,MapFragment膨胀了SupportMapFragment,它有时会工作。我将MapFragment更改为从SupportMapFragment扩展而来,它成功了
也许我对碎片的抽象不正确。但我确实在很多情况下使用了片段,它将一些视图逻辑封装起来
谢谢&对不起