移动相机时,以相机为中心移动谷歌地图标记

只需保留一个始终指向当前中心的标记引用。然后,在放置新零件时,如有必要,请移除旧零件:

//Instance variable:
Marker mCenterMarker;

myMap.setOnCameraMoveListener(new GoogleMap.OnCameraMoveListener() {
    @Override
    public void onCameraMove() {

        //Remove previous center if it exists
        if (mCenterMarker != null) {
            mCenterMarker.remove();
        }

        CameraPosition test = myMap.getCameraPosition();
        //Assign mCenterMarker reference:
        mCenterMarker = myMap.addMarker(new MarkerOptions().position(myMap.getCameraPosition().target).anchor(0.5f, .05f).title("Test"));
        Log.d(TAG, "Map Coordinate: " + String.valueOf(test));
    }
});

您可以创建一个通用标记变量,只需使用 setPosition(myMap.getCameraPosition().target)

//Instance variable:
Marker mCenterMarker;

myMap.setOnCameraMoveListener(new GoogleMap.OnCameraMoveListener() {
@Override
public void onCameraMove() {

    //Remove previous center if it exists

    CameraPosition test = myMap.getCameraPosition();
    //Assign mCenterMarker reference:
    mCenterMarker = setPosition(myMap.getCameraPosition().target)
    Log.d(TAG, "Map Coordinate: " + String.valueOf(test));
}