我正在尝试像这样控制Googlemap相机privatevoidsetUpMap(){Log.e(LOG_TAG,"insetupmethod");mMap.setMyLocationEnabled(true);LatLngstartingPoint=newLatLng(129.13381,129.10372);mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(startingPoint,16));Log.e(LOG_TAG,"inSetupmethod"+(mMapFragment==null));}LogCat打印“在设置方法中”“

mMapFragment=(SupportMapFragment)getSupportFragmentManager().findFragmentByTag(MAP_FRAGMENT_TAG);//Weonlycreateafragmentifitdoesn'talreadyexist.if(mMapFragment==null){mMapFragment=SupportMapFragment.newInstance();//ThenweadditusingaFragmentTransaction.FragmentTransactionfragmentTransaction=getSu

这个问题在这里已经有了答案:关闭9年前。PossibleDuplicate:HowdoIknowthemapisreadytogetusedwhenusingtheSupportMapFragment?我目前正在测试新的MapsAPIV2，但我真的很难让它正常工作。我的问题是getMap()总是返回null。我已经在3个不同的点上测试了调用:onCreate()onResume()在map在屏幕上可见几秒钟后调用的处理程序中代码如下:publicclassMapActivityextendsFragmentActivity{privateSupportMapFragmentmMapFr

这个问题在这里已经有了答案:关闭9年前。PossibleDuplicate:HowdoIknowthemapisreadytogetusedwhenusingtheSupportMapFragment?我目前正在测试新的MapsAPIV2，但我真的很难让它正常工作。我的问题是getMap()总是返回null。我已经在3个不同的点上测试了调用:onCreate()onResume()在map在屏幕上可见几秒钟后调用的处理程序中代码如下:publicclassMapActivityextendsFragmentActivity{privateSupportMapFragmentmMapFr