Android使用ViewFlipper实现左右滑动效果面

	@Override
	public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
			float velocityY) {
		System.out.println("in------------>>>>>>>");
		if (e1.getX() - e2.getX() > 120) {
			if (i < 3) {
				i++;
				setImage(i);
				this.flipper.setInAnimation(AnimationUtils.loadAnimation(this,
						R.anim.animation_right_in));
				this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this,
						R.anim.animation_left_out));
				this.flipper.showNext();
			}
			return true;
		} 
		else if (e1.getX() - e2.getX() < -120) {
			if (i > 0) {
				i--;
				setImage(i);
				this.flipper.setInAnimation(AnimationUtils.loadAnimation(this,
						R.anim.animation_left_in));
				this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this,
						R.anim.animation_right_out));
				this.flipper.showPrevious();
			}
			return true;
		}
		return false;
		
	}
	
	void setImage(int i)
	{
		for(int j=0;j<4;j++)
		{
			if(j!=i)
			iamges[j].setImageResource(R.drawable.xiao);
			else
				iamges[j].setImageResource(R.drawable.da);
		}
	}