我使用的是谷歌地图服务的com.google.android.gms:play-services-maps:7.5.0
版本。当我尝试调用下面的代码时,我得到了java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.SupportMapFragment.getMapAsync(com.google.android.gms.maps.OnMapReadyCallback)' on a null object reference
。
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
SupportMapFragment mapFragment = (SupportMapFragment) getActivity().getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this); //error
return inflater.inflate(R.layout.fragment_example_map, container, false);
}
fragment_example_map.xml文件:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="app.ExampleMap">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</FrameLayout>
https://stackoverflow.com/questions/30991087
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