我试图让一个标记与谷歌地图API的Android V2的自定义图标。 我只是改变了谷歌提供了一个例子。 我加入.icon(BitmapDescriptorFactory.fromResource(R.drawable.arrow))
以在RawMapViewDemoActivity方法setUpMap().
private void setUpMapIfNeeded() {
if (mMap == null) {
mMap = ((MapView) findViewById(R.id.map)).getMap();
if (mMap != null) {
setUpMap();
}
}
}
private void setUpMap() {
mMap.addMarker(new MarkerOptions()
.position(new LatLng(0, 0))
.title("Marker")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.arrow)));
}
但是,我总是得到一个“IBitmapDescriptorFactory未初始化”。
12-18 15:40:54.356: E/AndroidRuntime(12591): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mapdemo/com.example.mapdemo.RawMapViewDemoActivity}: java.lang.NullPointerException: IBitmapDescriptorFactory is not initialized
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.ActivityThread.access$600(ActivityThread.java:130)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.os.Handler.dispatchMessage(Handler.java:99)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.os.Looper.loop(Looper.java:137)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.ActivityThread.main(ActivityThread.java:4745)
12-18 15:40:54.356: E/AndroidRuntime(12591): at java.lang.reflect.Method.invokeNative(Native Method)
12-18 15:40:54.356: E/AndroidRuntime(12591): at java.lang.reflect.Method.invoke(Method.java:511)
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-18 15:40:54.356: E/AndroidRuntime(12591): at dalvik.system.NativeStart.main(Native Method)
12-18 15:40:54.356: E/AndroidRuntime(12591): Caused by: java.lang.NullPointerException: IBitmapDescriptorFactory is not initialized
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.google.android.gms.internal.at.a(Unknown Source)
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.google.android.gms.maps.model.BitmapDescriptorFactory.d(Unknown Source)
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.google.android.gms.maps.model.BitmapDescriptorFactory.fromResource(Unknown Source)
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.example.mapdemo.RawMapViewDemoActivity.setUpMap(RawMapViewDemoActivity.java:67)
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.example.mapdemo.RawMapViewDemoActivity.setUpMapIfNeeded(RawMapViewDemoActivity.java:58)
12-18 15:40:54.356: E/AndroidRuntime(12591): at com.example.mapdemo.RawMapViewDemoActivity.onCreate(RawMapViewDemoActivity.java:43)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.Activity.performCreate(Activity.java:5008)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
12-18 15:40:54.356: E/AndroidRuntime(12591): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
12-18 15:40:54.356: E/AndroidRuntime(12591): ... 11 more
在BitmapDescriptorFactory它说:
使用从这个类的任何方法之前,必须执行下列操作之一,以确保该类被初始化:
等待的GoogleMap变得可用,您已经添加到您的应用程序MapFragment或MapView的。 您可以验证GoogleMap的可调用的GetMap()方法,并检查返回的对象不为空。
呼叫MapsInitializer.initialize(上下文)。 只要com.google.android.gms.common.GooglePlayServicesNotAvailableException GooglePlayServicesNotAvailableException没有抛出,这个类将被正确初始化。
我做的第一个,但仍然得到这个错误。 有什么建议?