VectorDrawable,使用GoogleMap BitmapDescriptor

Question

使用VectorDrawableAPI 5.0+为MarkerOptions创建图标时，google maps的BitmapDescriptor有问题

用于创建的方法：

@NonNull
private BitmapDescriptor getBitmapDescriptor(int id) {
    return BitmapDescriptorFactory.fromResource(id);
}

11-05 10:15:05.213 14536-14536/xxx.xxxxx.app E/AndroidRuntime: FATAL EXCEPTION: main
    Process: xxx.xxxxx.app, PID: 14536
    java.lang.NullPointerException
        at com.google.a.a.ae.a(Unknown Source)
        at com.google.maps.api.android.lib6.d.dn.<init>(Unknown Source)
        at com.google.maps.api.android.lib6.d.dm.a(Unknown Source)
        at com.google.maps.api.android.lib6.d.ag.<init>(Unknown Source)
        at com.google.maps.api.android.lib6.d.eu.a(Unknown Source)
        at com.google.android.gms.maps.internal.j.onTransact(SourceFile:167)
        at android.os.Binder.transact(Binder.java:380)
        at com.google.android.gms.maps.internal.IGoogleMapDelegate$zza$zza.addMarker(Unknown Source)
        at com.google.android.gms.maps.GoogleMap.addMarker(Unknown Source)
        at xxx.xxxxx.app.ui.details.DetailActivity.lambda$initGoogleMaps$23(DetailActivity.java:387)
        at xxx.xxxxx.app.ui.details.DetailActivity.access$lambda$10(DetailActivity.java)
        at xxx.xxxxx.app.ui.details.DetailActivity$$Lambda$13.onMapReady(Unknown Source)
        at com.google.android.gms.maps.SupportMapFragment$zza$1.zza(Unknown Source)
        at com.google.android.gms.maps.internal.zzl$zza.onTransact(Unknown Source)
        at android.os.Binder.transact(Binder.java:380)
        at com.google.android.gms.maps.internal.av.a(SourceFile:82)
        at com.google.maps.api.android.lib6.d.fa.run(Unknown Source)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

Answer 1

可能的解决办法：

private BitmapDescriptor getBitmapDescriptor(int id) {
    Drawable vectorDrawable = context.getDrawable(id);
    int h = ((int) Utils.convertDpToPixel(42, context));
    int w = ((int) Utils.convertDpToPixel(25, context));
    vectorDrawable.setBounds(0, 0, w, h);
    Bitmap bm = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bm);
    vectorDrawable.draw(canvas);
    return BitmapDescriptorFactory.fromBitmap(bm);
}