我想在加载谷歌地图之后做一些事情(maptiles已被填充)无论如何都要实现这一目标吗?
答案 0 :(得分:0)
如qubz所述,ViewTreeObserver可用于在地图加载完成后实现回调,因此用户将获得例如启动后的正确位置:
@Override
public void onCreate(Bundle savedInstanceState) {
// This is a small hack to enable a onMapLoadingCompleted-functionality to the user.
final View mapView = getSupportFragmentManager().findFragmentById(R.id.google_map_fragment).getView();
if (mapView.getViewTreeObserver().isAlive()) {
mapView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@SuppressWarnings("deprecation")
// We use the new method when supported
@SuppressLint("NewApi")
// We check which build version we are using.
@Override
public void onGlobalLayout() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
mapView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
} else {
mapView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
// Send notification that map-loading has completed.
onMapFinishedLoading();
}
});
}
}
protected void onMapFinishedLoading() {
// Do whatever you want to do. Map has completed loading at this point.
Log.i(TAG, "Map finished loading.");
GoogleMap mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.google_map_fragment))
.getMap();
mMap.moveCamera(CameraUpdateFactory.zoomIn());
}