ios学习之基础触摸事件5

最新推荐文章于 2025-06-02 14:57:06 发布

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本文详细介绍iOS开发中处理触摸和手势的方法，包括重写UIView的触摸事件、实现多点触摸、通过UIKit框架识别各种手势如点击、双击、滑动、长按等，并提供了具体的代码实现案例。

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//触摸和手势
重写 UIView
touchesBegan

touchesMoved

touchesEnded

//两个手指 init

self.multipleTouchEnabled=YES;

//单击和双击

UITouch *touch=[touches anyObject];
NSUInteger tapcount=touch.tapCount;
if(tapcount==1)
{
[self performSelector:@selector(singlefuntion) withObject:nil afterDelay:0.5];//延时调用
}
else if(tapcount==2)
{
[NSObject cancelPreviousPerFormRequestsWithTarget:self selector:@selector(singlefuntion) object:nil];
[self doublefuntion];
}

//触摸的点坐标
CGPoint point=[touch locationInView:myview];

//移动视图

UITouch *touch=[touches anyObject];
CGPoint point=[touch locatonInView:self];//得到触摸点
CGRect frame=movieView.frame; //要移动的视图位置
frame.origin=point; //触摸位置给框架
movieView.frame=frame; //框架给

//捏合手势的识别

NSArray *toucharr=[touches allObjects];
UItouch *fisrttouch=[toucharr obejctAtIndex:0];
UItouch *secondtouch=[toucharr obejctAtIndex:1];
CGpoint point1=[firsttouch locationInView:self];
CGpoint point2=[secondtouch locationInView:self];

（（x1-x2）的平方+（y1-y2）平方）开方

double distance=sqrt(pow(p1.x-p2.x,2)+pow(p1.y-p2.y,2));

float subValue=distance-lastValue;

if(subValue>0)
{
NSLog(@"放大");
}
else
{
NSLog(@"缩小");
}

lastValue=distance;

/////////////////下面的用在控制器中

/////////////////////////didloadview

/////单击
UITapGestureRecognizer *tap=[UITapGestureRecognizer alloc]initWithTargetself action:@selector(tap:)];
[self.view addGestureRecognizer:tap];

//双击

tap.numberOfTapsRequired=2;

[self addGestureRecognizer:tap];

//区分单击和双击

[singtap requireGestureRecongnizerToFail:doubletap];

//向上轻扫

UISwipeGestureRecognizer *swipe=[UISwipeGestureRecognizer alloc]initWithTarget:self actio:@selector(swipe:)];
swipe.direction=UISwipeGestureRecognizerDirectionUp;//默认不写是向右轻扫
[self.view addGestureRecongnizer:swipe];

//平移手势（滑动）

UIPanGestureRecngnizer *pan=[UIPanGestureRecngnizer alloc]initWithTarget:self action:@selector(pan:)];
[self.view addGestureRecngnizer:pan];

-(void)pan:(UIPanGestureRecngnizer *)_pan
{
CGPoint point=[_pan locationInView:self.view];
tempView.center=point;
}

//长按手势
UILongPressGestureRecognizer *longpress=[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];
longpress.minimumPressDuration=3;
[self.view addGestureRecongnizer:longpress];

-(void)longPress:(UILongPressGestureRecognizer *)_longPress
{
NSLog(@"long %u",[_longPress state]);
}

//旋转手势
UIRotationGestureRecognizer *rotatio=[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selecttor(rotation)];
[self.view addGestureRecongnizer:rotation];

-(void)rotationAction:(UIRotationGestureRecognizer *)rotation
{
NSLog(@"%f",rotation.rotation);
}