Disbaly marker for my current location in android

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Java

Android

Hello
I am tring to display my current location and put a marker in the map . now only i can see the defult blue dot.

What I have tried:

Override
public void onLocationChanged(Location location) {
    //show our own marker
    mLastLocation = location;
    if (mCurrLocationMarker != null) {
        mCurrLocationMarker.remove();
    }

    //Place current location marker
    LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
    MarkerOptions markerOptions = new MarkerOptions();
    markerOptions.position(latLng);
    markerOptions.title("Current Position");
    markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
    mMap.clear();
    mMap.addMarker(markerOptions);