android实现界面切换效果,Android手势实现切换界面的效果

定义手势对象detector=new GestureDetector(new GestureListener());

listView.setOnTouchListener(new TouhListener());//设置监听手势

//触摸屏幕监听

class TouhListener implements OnTouchListener{

@Override

public boolean onTouch(View v, MotionEvent event) {

// TODO Auto-generated method stub

//Toast.makeText(getApplicationContext(), "----?", event.getAction()).show();

return detector.onTouchEvent(event);

}

}

//手势滑动监听

class GestureListener implements OnGestureListener{

@Override

public boolean onDown(MotionEvent e) {

// TODO Auto-generated method stub

/*

* 当触摸屏幕是使用这个函数

*/

//Toast.makeText(getApplicationContext(), "-----------> onDown", Toast.LENGTH_LONG).show();

return false;

}

@Override

public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,

float velocityY) {

try {

if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)

return false;

// right to left swipe

if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE

&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {

Log.i("test ", "right");

Animation reverse = AnimationUtils

.loadAnimation(AgendaGridViewActivity.this, R.anim.push_left);

if(index == 3){

setSelect(index = 0,reverse);

}else{

setSelect(index =index+1,reverse);

}

gridMenus.setNextFocusRightId(View.FOCUS_DOWN);

} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE

&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {

Log.i("test ", "left");

Animation reverse = AnimationUtils

.loadAnimation(AgendaGridViewActivity.this, R.anim.push_right);

if(index == 0){

setSelect(index = 3,reverse);

}else{

setSelect(index = index-1,reverse);

}

}

} catch (Exception e) {

// nothing

}

return false;

}