小编use*_*491的帖子

请考虑以下代码:

    public Fingerprint(HashMap<String, Integer> measurements) {
        this();
        mMeasurements = measurements;
    }

   public Fingerprint(HashMap<String, Integer> measurements, String map) {
        this(measurements);
        mMap = map;
    }

    public Fingerprint(int id, String map, PointF location) {
        this();
        mLocation = location;
    }

    public Fingerprint(int id, String map, PointF location, HashMap<String, Integer> measurements) {
        this(id, map, location);
        mMeasurements = measurements;
    }

这样做的目的是什么(); 在这种背景下？因为我认为"this"指的是当前对象的字段.这是相同的定义吗？