Android的SupportMapFragment.getMap()返回null [英] Android SupportMapFragment.getMap() returns null
问题描述
在我的下面code,的GetMap()返回null,该停止的应用程序。如果我不这样做与地图(即,去掉最后两行)有的话,它正确地显示。知道为什么吗?谢谢你。
公共无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.main); FragmentManager fragmentManager = getSupportFragmentManager();
SupportMapFragment mapFragment = SupportMapFragment.newInstance();
mapFragmentId = mapFragment.getId();
FragmentTransaction交易= fragmentManager.beginTransaction();
transaction.add(R.id.my_container,mapFragment);
器transaction.commit(); MMAP = mapFragment.getMap();
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
}
的复制:<一href=\"http://stackoverflow.com/questions/19219255/supportmapfragment-getmap-returns-null/27320960#27320960\">SupportMapFragment.getmap()返回null
检查您的布局XML文件。我注意到,我没有被引用:
机器人:名字=com.google.android.gms.maps.SupportMapFragment
反而:
机器人:名字=com.google.android.gms.maps.MapFragment
的名称应该是:
机器人:名字=com.google.android.gms.maps.SupportMapFragment
块引用>in my following code, getMap() returns null, which stop the app. If I don't do anything with the map (i.e, removing the last two lines), it shows correctly. Any idea why? Thanks.
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); FragmentManager fragmentManager = getSupportFragmentManager(); SupportMapFragment mapFragment = SupportMapFragment.newInstance(); mapFragmentId = mapFragment.getId(); FragmentTransaction transaction = fragmentManager.beginTransaction(); transaction.add(R.id.my_container, mapFragment); transaction.commit(); mMap = mapFragment.getMap(); mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); }
解决方案Duplicate of: SupportMapFragment.getmap() returns null
Check your layout xml file. I noticed that I wasn't referencing: android:name="com.google.android.gms.maps.SupportMapFragment" but rather: android:name="com.google.android.gms.maps.MapFragment"
The name should be: android:name="com.google.android.gms.maps.SupportMapFragment"
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