Question

这是我为Google Map项目编写的代码。但它在行号上提示错误。 271在getMapAsync（）。

 private void setUpMap(double lat,double lon) {
    // Do a null check to confirm that we have not already instantiated the map.
    if (mMap == null) {
        // Try to obtain the map from the SupportMapFragment.
        mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMapAsync();
        // Check if we were successful in obtaining the map.
        if (mMap != null) {
            mMap.moveCamera(CameraUpdateFactory.newLatLng(new LatLng(lat, lon)));
            mMap.animateCamera(CameraUpdateFactory.zoomTo(16.0f));
            if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
                    == PackageManager.PERMISSION_GRANTED) {
                mMap.setMyLocationEnabled(true);
            mMap.setOnMapLongClickListener(new GoogleMap.OnMapLongClickListener() {
                @Override
                public void onMapLongClick(LatLng latLng) {
                    try {
                        new GetPlacesAsyncTask().execute(latLng.latitude, latLng.longitude);

                    } catch (Exception ex) {
                        Toast.makeText(getApplicationContext(), ex.getMessage(), Toast.LENGTH_LONG).show();
                    }
                }
            });

        }
    }
}}

Answer 1

你需要将“new OnMapReadyCallback（）”传递给getMapAsync（）方法，如下所示： -

getMapAsync（new OnMapReadyCallback（）{}）：

SupportMapFragment中的getMapAsync（OnMapReadyCallback）不能应用于（）

1 个答案: