//1.創(chuàng)建點按手勢
- (void)tapGes {
    //1.創(chuàng)建點按手勢
    UITapGestureRecognizer *tapGes = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap)];
    
    tapGes.delegate = self;

    //2.添加手勢
    [self.imageV addGestureRecognizer:tapGes];
    
}

//是否允許接收手指
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
    
    //獲取當(dāng)前的點.
    CGPoint curP = [touch locationInView:self.imageV];
    //判斷點在圖片的左邊還是右邊;
    if (curP.x > self.imageV.bounds.size.width * 0.5) {
        //如果在右邊,返回YES;
        return YES;
    }else {
        //否則返回NO;
        return NO;
    }
}

長按手勢有3種狀態(tài)調(diào)用時機(jī)：1炫乓，第一次響應(yīng)的時候夜赵，2.手指不松開移動的時候设褐，3.手指松開的時候
//1.創(chuàng)建長按
- (void)longPressGes {
    //1.創(chuàng)建長按
    UILongPressGestureRecognizer *longP = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longGes:)];
    
    //2.添加手勢
    [self.imageV addGestureRecognizer:longP];
}

//長按手勢分狀態(tài),長按移動時,會持續(xù)調(diào)用
- (void)longGes:(UILongPressGestureRecognizer *)longP {
    if (longP.state == UIGestureRecognizerStateBegan) {
        NSLog(@"UIGestureRecognizerStateBegan");
    }else if (longP.state == UIGestureRecognizerStateChanged) {
        NSLog(@"UIGestureRecognizerStateChanged");
    }else if (longP.state == UIGestureRecognizerStateEnded) {
        NSLog(@"UIGestureRecognizerStateEnded");
    }
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.imageV.userInteractionEnabled = YES;
    //添加手勢
    //1.創(chuàng)建輕掃
    UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGes:)];
    //默認(rèn)是向右輕掃
    //設(shè)置輕掃的方向
    //一個輕掃手勢只能對應(yīng)一個方向
    swipe.direction = UISwipeGestureRecognizerDirectionLeft;
    //2.添加手勢
    [self.imageV addGestureRecognizer:swipe];
    
    //1.創(chuàng)建輕掃
    UISwipeGestureRecognizer *swipe2 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGes:)];
    //默認(rèn)是向右輕掃
    //設(shè)置輕掃的方向
    //一個輕掃手勢只能對應(yīng)一個方向
    swipe2.direction = UISwipeGestureRecognizerDirectionRight;
    //2.添加手勢
    [self.imageV addGestureRecognizer:swipe2];
}

- (void)swipeGes:(UISwipeGestureRecognizer *)swipe {
    if (swipe.direction == UISwipeGestureRecognizerDirectionLeft) {
        NSLog(@"UISwipeGestureRecognizerDirectionLeft");
    }else if (swipe.direction == UISwipeGestureRecognizerDirectionRight) {
         NSLog(@"UISwipeGestureRecognizerDirectionRight");
    }
}

通過拖轉(zhuǎn)手勢獲取的偏移量是相對最原始的點讹俊，也就是最開始拖動的點(松開手指第二次去拖轉(zhuǎn)盾戴，同樣相對的是第一次拖動的那個最原始的點,所以第二次拖動的時候寄锐，它回自動回去)

//1.創(chuàng)建平移
- (void)panGes {
    //添加手勢
    //1.創(chuàng)建平移
    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];
    //2.添加手勢
    [self.imageV addGestureRecognizer:pan];
}

//當(dāng)拖動時持續(xù)調(diào)用
- (void)pan:(UIPanGestureRecognizer *)pan {
    //獲取偏移量
    //獲取的偏移量是相對于最原始的點
    CGPoint transP = [pan translationInView:self.imageV];
    NSLog(@"%@",NSStringFromCGPoint(transP));
    
//    self.imageV.transform = CGAffineTransformMakeTranslation(transP.x, transP.y);
    self.imageV.transform = CGAffineTransformTranslate(self.imageV.transform, transP.x, transP.y);
    
    //清0操作(不讓偏移量進(jìn)行累加,獲取的是相對于上一次的值,每一次走的值.)
    [pan setTranslation:CGPointMake(0, 0) inView:self.imageV];
}

- (void)rotationGes {
    //1.創(chuàng)建旋轉(zhuǎn)手勢
    UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];
    rotation.delegate = self;
    //2.添加手勢
    [self.imageV addGestureRecognizer:rotation];
}

- (void)rotation:(UIRotationGestureRecognizer *)rotationGes {
    //獲取旋轉(zhuǎn)角度(已經(jīng)是弧度)
    //相對于最原始的弧度
    CGFloat rotatinon = rotationGes.rotation;
    self.imageV.transform = CGAffineTransformRotate(self.imageV.transform, rotatinon);
    //清0
    [rotationGes setRotation:0];
}

//1.創(chuàng)建捏合手勢
- (void)pinchGes {
    //添加手勢
    //1.創(chuàng)建捏合手勢
    UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];
    pinch.delegate = self;
    //2.添加手勢
    [self.imageV addGestureRecognizer:pinch];
}

- (void)pinch:(UIPinchGestureRecognizer *)pinch {
    //放大, 縮小
    //獲取縮放比例(相對于最原始的比例)
    CGFloat scale = pinch.scale;
    self.imageV.transform = CGAffineTransformScale(self.imageV.transform, scale, scale);
    
    [pinch setScale:1];
}

//一個手勢默認(rèn)是不能夠同時支持多個手勢
//可以通過代理進(jìn)行設(shè)置.
//是否允許同時支持多個手勢
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES;
}