我有一个MapFragment显示地图
如果用户带着地图离开活动（或设备进入睡眠状态）然后回来onResume接到电话后，我将地图移回到标记处。
但是当我移动相机时我遇到了异常
07-23 16:28:42.725: E/AndroidRuntime(19095): java.lang.RuntimeException: Unable to resume activity {ecm2.android/ecm2.android.EMGNoteMapActivity}: java.lang.IllegalStateException: Map size should not be 0. Most likely, layout has not yet occured for the map view.
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2742)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2771)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2235)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.os.Handler.dispatchMessage(Handler.java:99)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.os.Looper.loop(Looper.java:137)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.ActivityThread.main(ActivityThread.java:5041)
07-23 16:28:42.725: E/AndroidRuntime(19095): at java.lang.reflect.Method.invokeNative(Native Method)
07-23 16:28:42.725: E/AndroidRuntime(19095): at java.lang.reflect.Method.invoke(Method.java:511)
07-23 16:28:42.725: E/AndroidRuntime(19095): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-23 16:28:42.725: E/AndroidRuntime(19095): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-23 16:28:42.725: E/AndroidRuntime(19095): at dalvik.system.NativeStart.main(Native Method)
07-23 16:28:42.725: E/AndroidRuntime(19095): Caused by: java.lang.IllegalStateException: Map size should not be 0. Most likely, layout has not yet occured for the map view.
07-23 16:28:42.725: E/AndroidRuntime(19095): at maps.as.i.b(Unknown Source)
07-23 16:28:42.725: E/AndroidRuntime(19095): at maps.ah.w.a(Unknown Source)
07-23 16:28:42.725: E/AndroidRuntime(19095): at maps.ah.s.a(Unknown Source)
07-23 16:28:42.725: E/AndroidRuntime(19095): at maps.ah.an.b(Unknown Source)
07-23 16:28:42.725: E/AndroidRuntime(19095): at bgc.onTransact(SourceFile:92)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.os.Binder.transact(Binder.java:310)
07-23 16:28:42.725: E/AndroidRuntime(19095): at com.google.android.gms.maps.internal.IGoogleMapDelegate$a$a.animateCamera(Unknown Source)
07-23 16:28:42.725: E/AndroidRuntime(19095): at com.google.android.gms.maps.GoogleMap.animateCamera(Unknown Source)
07-23 16:28:42.725: E/AndroidRuntime(19095): at ecm2.android.Fragments.EMGMap.centerOnNote(EMGMap.java:340)
07-23 16:28:42.725: E/AndroidRuntime(19095): at ecm2.android.Fragments.EMGMap.fetchMapSettings(EMGMap.java:283)
07-23 16:28:42.725: E/AndroidRuntime(19095): at ecm2.android.Fragments.EMGMap.onResume(EMGMap.java:289)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:917)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1080)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.support.v4.app.FragmentManagerImpl.dispatchResume(FragmentManager.java:1820)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.support.v4.app.FragmentActivity.onPostResume(FragmentActivity.java:412)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.Activity.performResume(Activity.java:5195)
07-23 16:28:42.725: E/AndroidRuntime(19095): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2732)
07-23 16:28:42.725: E/AndroidRuntime(19095): ... 12 more
这是我的相机运动onResume
if(map != null && northEast != null && southWest != null){
map.animateCamera(CameraUpdateFactory.newLatLngBounds(new LatLngBounds(southWest,northEast),10));
}else if(map != null && centerPoint != null){
CameraPosition position = new CameraPosition.Builder()
.target(centerPoint).zoom(17).build();
map.animateCamera(CameraUpdateFactory.newCameraPosition(position));
}
如果我取消相机运动，它不会崩溃，但不会回到他们离开它或其他东西的点。
我检查以确保map不为空，所以我不知道是什么导致了错误？
Caused by: java.lang.IllegalStateException: Map size should not be 0. Most likely, layout has not yet occured for the map view.
这应该足够清楚了。你不能打电话
map.animateCamera(CameraUpdateFactory.newLatLngBounds(new LatLngBounds(southWest,northEast),10));
在布局完成之前。您需要使用 3 参数版本。
请参阅此处的文档：newLatLngBounds
或者，您可以监听布局完成，而不是调用此代码onResume.
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