摘要：
题外话： /** * A ViewGroup is a special view that can contain other views * (called children.) The view group is the base class for layouts and views * containers. This class also defines the * android.view.ViewGroup.LayoutParams class which serves as the base * class for layouts parameters.一个ViewGroup是 阅读全文
摘要：
我们在很多应用中会用到Android的手势识别，比如单击，长按，滑动等等，这时候就需要我们监听用户的触摸事件。在实现这个功能的时候，有两个接口看上去有点像：OnTouchEvent和OnGestureListener。（我好像一直比较误会）假设一个类实现了OnGestureListener接口，那么它需要实现的方法如下： 1 import android.app.Activity; 2 import android.view.GestureDetector.OnGestureListener; 3 import android.view.MotionEvent; 4 5 public cla. 阅读全文