[教学] Android MapFragment.getMap()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.maps.GoogleMap com.google.android.gms.maps.MapFragment.getMap()' on a null object referenceClassLoader.loadClass: The class loader returned by Thread.getContextClassLoader() may fail for processes that host multiple applications. You should explicitly specify a context class loader. For example: Thread.setContextClassLoader(getClass().getClassLoader());
Solution 解决方案
MapFragment mapFragment = (MapFragment) getChildFragmentManager().findFragmentById(R.id.mapView);
if(mapFragment == null){
return;
}
googleMap = mapFragment.getMap();
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