Android: Drag map while keeping marker at the center

Question

I am currently getting Current Location of device (lat,lng) in MapActivity. Now , I want to let the user move the map, while keeping the marker at the center. This means tha

Answer 1

Having a map under an ImageView with your marker icon would be the best way to go here (just a framelayout with your map fragment under and your marker image centered on top should work). Then you can use an OnCameraIdleListener which would receive a callback when the map movement has ended. So just set an instance of OnCameraIdleListener to your map to listen for movement callbacks like so:

map.setOnCameraIdleListener(new GoogleMap.OnCameraIdleListener() {
        @Override
        public void onCameraIdle() {
            //get latlng at the center by calling
            LatLng midLatLng = map.getCameraPosition().target;
        }
    });

Answer 2

Try at first this layout for your Activity_map.xml:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <fragment
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.google.android.gms.maps.MapFragment"
    />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:src="@drawable/gps"
    />

</RelativeLayout>