iOS手势以及手势冲突问题

今天研究了一下iOS手势,手势包括点击,拖动,扫动,长按,捏合,旋转手势,下面上代码

#define WIDTH [UIScreen mainScreen].bounds.size.width#define HEIGHT [UIScreen mainScreen].bounds.size.height

@property (nonatomic,strong)UIImageView * image;@property (nonatomic,strong)UIAlertController * alertcontroller;@property (nonatomic,strong)UIPinchGestureRecognizer * pinch;@property (nonatomic,strong)UISwipeGestureRecognizer * swipright;@property (nonatomic,strong)UISwipeGestureRecognizer * swipleft;@property (nonatomic,strong)UILongPressGestureRecognizer * longpre;@property (nonatomic,strong)UIRotationGestureRecognizer * rote;@property (nonatomic,strong)UIPanGestureRecognizer * pan;

-(void)creatImage{    _image = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"1"]];    _image.frame = CGRectMake(0, 60, WIDTH, HEIGHT - 100);    _image.userInteractionEnabled = YES;    [self.view addSubview:_image];    //解决在图片上滑动时拖动手势和轻扫手势的冲突//    [_pan requireGestureRecognizerToFail:_swipright];//    [_pan requireGestureRecognizerToFail:_swipleft];    //解决拖动和长按手势之间的冲突    [_longpre requireGestureRecognizerToFail:_pan];}/* 1     UIGestureRecognizerStatePossible,   // 尚未识别是何种手势操作（但可能已经触发了触摸事件），默认状态 3     UIGestureRecognizerStateBegan,      // 手势已经开始，此时已经被识别，但是这个过程中可能发生变化，手势操作尚未完成 4     UIGestureRecognizerStateChanged,    // 手势状态发生转变 5     UIGestureRecognizerStateEnded,      // 手势识别操作完成（此时已经松开手指） 6     UIGestureRecognizerStateCancelled,  // 手势被取消，恢复到默认状态 7     UIGestureRecognizerStateFailed,     // 手势识别失败，恢复到默认状态 8     UIGestureRecognizerStateRecognized = UIGestureRecognizerStateEnded // 手势识别完成，同UIGestureRecognizerStateEnded *///创建点击-(void)creatActionSheet{    _alertcontroller = [UIAlertController alertControllerWithTitle:@"标题" message:@"啦啦" preferredStyle:UIAlertControllerStyleActionSheet];    UIAlertAction * action = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {        nil;    }];    [_alertcontroller addAction:action];}-(void)setTapGestureRecognizer{    UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapClick)];    tap.numberOfTapsRequired = 1;//点击次数    tap.cancelsTouchesInView = NO;    tap.numberOfTouchesRequired = 1;//指头数  //3不行    [self.view addGestureRecognizer:tap];}-(void)setPanGestureRecognizer{    _pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panClick:)];    _pan.minimumNumberOfTouches = 0.5;  //拖动的最短距离默认是0.5一般不要改    _pan.maximumNumberOfTouches = 2;//拖动的最长距离    _pan.delegate = self;    [_image addGestureRecognizer:_pan];}-(void)setLongPressGestureRecognizer{    _longpre = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longClick:)];    _longpre.allowableMovement = 10; //在失败之前允许移动的    _longpre.minimumPressDuration = 1;//长按的时间    _longpre.delegate = self;    [_image addGestureRecognizer:_longpre];}-(void)setPinchGestureRecognizer{    _pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchClick:)];    _pinch.delegate = self;    [_image addGestureRecognizer:_pinch];}-(void)setRotationGestureRecognizer{    _rote = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotClick:)];    [_image addGestureRecognizer:_rote];    _rote.delegate = self;}-(void)setSwipeGestureRecognizer{    _swipright = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swip:)];    _swipright.direction = UISwipeGestureRecognizerDirectionRight;    [_image addGestureRecognizer:_swipright];    _swipleft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swip:)];    _swipleft.direction = UISwipeGestureRecognizerDirectionLeft;    [_image addGestureRecognizer:_swipleft];}#pragma mark Action-(void)tapClick{    NSLog(@"点击");    [UIView animateWithDuration:0.2 animations:^{        _image.frame = CGRectMake(0, 0, 300, 300);    }];}-(void)panClick:(UIPanGestureRecognizer*)pan{    //解决在图片上滑动时拖动手势和轻扫手势的冲突    if (pan.state==UIGestureRecognizerStateChanged) {        /*         1.CGAffineTransformMakeTranslation(CGFloat tx, CGFloat ty)（平移:设置平移量）         2.CGAffineTransformMakeScale(CGFloat sx, CGFloat sy)（缩放:设置缩放比例）仅通过设置缩放比例就可实现视图扑面而来和缩进频幕的效果。         3.CGAffineTransformMakeRotation(CGFloat angle)（旋转:设置旋转角度         */        CGPoint translation=[pan translationInView:self.view];//利用拖动手势的translationInView:方法取得在相对指定视图（这里是控制器根视图）的移动        if (translation.x > 0) {            [pan requireGestureRecognizerToFail:_swipright];        }else{            [pan requireGestureRecognizerToFail:_swipleft];        }        _image.transform = CGAffineTransformMakeTranslation(translation.x, translation.y);        NSLog(@"%lf",[pan velocityInView:self.view].x);//移动的速率    }else if(pan.state == UIGestureRecognizerStateEnded){        [UIView animateWithDuration:0.5 animations:^{            _image.transform = CGAffineTransformIdentity;        }];    }}-(void)longClick:(UILongPressGestureRecognizer*)longpress{    //解决拖动和长按手势之间的冲突,这里必须是手势包含关系,比如拖动与骚动  长按与拖动//    [_longpre requireGestureRecognizerToFail:_pan];    if (longpress.state == UIGestureRecognizerStateBegan) {        [self presentViewController:_alertcontroller animated:YES completion:^{        }];    }}-(void)pinchClick:(UIPinchGestureRecognizer*)pinch{    CGFloat scale = pinch.scale;//获取当前的缩放比例    pinch.view.transform = CGAffineTransformScale(pinch.view.transform, scale, scale); //在已缩放大小基础下进行累加变化；区别于：使用 CGAffineTransformMakeScale 方法就是在原大小基础下进行变化    pinch.scale = 1.0;}-(void)rotClick:(UIRotationGestureRecognizer*)rot{    if (rot.state == UIGestureRecognizerStateChanged) {        _image.transform = CGAffineTransformMakeRotation(rot.rotation);    }else if (rot.state == UIGestureRecognizerStateEnded){        [UIView animateWithDuration:0.8 animations:^{            _image.transform = CGAffineTransformIdentity;        }];    }//    _image.transform = CGAffineTransformRotate(rot.view.transform, rot.rotation);//    rot.rotation = 0.0;}-(void)swip:(UISwipeGestureRecognizer*)gesture{    if (gesture == _swipright) {        [self nextImage];    }else if (gesture == _swipleft){        [self lastImage];    }}-(void)itemClick{    SecondViewController * second = [[SecondViewController alloc] init];    [self.navigationController pushViewController:second animated:YES];}-(void)nextImage{    _image.image = [UIImage imageNamed:@"2"];}-(void)lastImage{    _image.image = [UIImage imageNamed:@"3"];}