java - 如何将文本设置为来自另一个类的 Google map 当前位置

Question

我创建了一个单独的 Activity 来创建 Google map 并在用户当前位置设置标记。在另一个 fragment 类中，我想将 TextView 的文本设置为 map Activity 中的位置。

CheckInFragment

mLocation = (TextView) v.findViewById(R.id.checkin_location_text);
mLocation.setText();

MapsActivity

private void handleNewLocation(Location location){
    //SET THESE TWO VARIABLES TO THE TEXT vv
    double currentLatitude = location.getLatitude();
    double currentLongitude = location.getLongitude();

    LatLng latLng = new LatLng(currentLatitude, currentLongitude);

    MarkerOptions options = new MarkerOptions()
                .position(latLng)
                .title("Check In Location");

    mMap.addMarker(options); 
    mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
    float zoomLevel = 16.0f;
    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, zoomLevel));

}

Answer 1

你可以试试下面的代码来获取位置的字符串值:

Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
try {
    List<Address> addressList = geocoder.getFromLocation(location.getLatitude(),
                        location.getLongitude(), 1);

    String fullAddress = "";

    if (addressList != null && addressList.size() > 0) {

        if (addressList.get(0).getAddressLine(0) != null) {
            fullAddress += addressList.get(0).getAddressLine(0) + " ";
        }
        if (addressList.get(0).getSubAdminArea() != null) {
            fullAddress += addressList.get(0).getSubAdminArea() + " ";
        }

    } else {
        Log.d("Address:", "Couldn't find Address");
    }
} catch (IOException e) {
    e.printStackTrace();
}

然后您可以在调用您的 fragment 类时在包中传递 fullAddress 字符串值，例如:

YourFragment fragment = new YourFragment();
Bundle args = new Bundle();
args.putString("location_string", fullAddress);
fragment.setArguments(args);

最后在 Fragment 类的 onCreate 方法中获取如下字符串值:

if (getArguments() != null)
{
    _location = getArguments().getString("location_string");
}

希望这有帮助!!!