Android_GestureDetector 手势相关

步骤1：可以在BaseActivity里，定义成员变量，创建一个内部类：

private
GestureDetector mGestureDetector;

public
class GestureListener
extends
GestureDetector.SimpleOnGestureListener {

// 最小距离，最小速度
final
int FLING_MIN_DISTANCE
= 100,
FLING_MIN_VELOCITY
= 200;

public
boolean onFling(MotionEvent e1, MotionEvent e2,
float
velocityX,
float velocityY) {

if
(e1.getX()- e2.getX() >
FLING_MIN_DISTANCE && Math.abs(velocityX) >
FLING_MIN_VELOCITY) {

// Fling left
Log.e("MyGestrue",
"Fling_left");

}
else
if
(e2.getX() - e1.getX() >
FLING_MIN_DISTANCE
&& Math.abs(velocityX) >
FLING_MIN_VELOCITY) {

// Fling right
Log.e("MyGestrue",
"Fling_right");

}

return
true;
}

}

步骤2：在继承自BaseActivity的类里初始化GestureDetector：

mGestureDetector =
new GestureDetector(new GestureListener());

步骤3：在onTouch事件中：

@Override
private
boolean onTouch(Viewv,MotionEvent event) {

// TODOAuto-generated method stub
return
mGestureDetector.onTouchEvent(event);

}