IOS手指触摸滑动

来源：互联网发布：通联数据股份有限公司编辑：程序博客网时间：2024/04/30 02:58

主要是捕捉3个事件，触摸开始touchesBegan，触摸移动touchesMoved，触摸结束touchesEnded。

//滑动开始事件- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{//    NSLog(@"开始了");    UITouch *touch = [touches anyObject];    CGPoint pointone = [touch locationInView:self.view];//获得初始的接触点    //以字符的形式输出触摸点            _startX  = pointone.x;    NSLog(@"触摸点的坐标：%f",_startX);}//滑动移动事件- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{//    NSLog(@"移动啦");    UITouch *touch = [touches anyObject];    //imgViewTop是滑动后最后接触的View    CGPoint pointtwo = [touch locationInView:self.view];  //获得滑动后最后接触屏幕的点     NSLog(@"移动点的坐标：%f,%f",pointtwo.x,_startX);    int position = (pointtwo.x-_startX);    NSLog(@"position is %d",position);    if(fabs(pointtwo.x-_startX)>100)    {  //判断两点间的距离        NSLog(@"移动了");         _bMove = YES;    }}//滑动结束处理事件-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{    UITouch *touch = [touches anyObject];    CGPoint pointtwo = [touch locationInView:self.view];  //获得滑动后最后接触屏幕的点    if((fabs(pointtwo.x-_startX)>50)&&(_bMove))    {        //判断点的位置关系 左滑动        if(pointtwo.x-_startX>0)        {   //左向右滑动业务处理            NSLog(@"左向右移动");                  }        //判断点的位置关系 右滑动        else        {  //右向左滑动业务处理            NSLog(@"右移动");             [self goToNext];        }    }}

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