一.UITouch
1 //任何视图都可以触发此方法
2 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
3 NSLog(@"视图被触摸了");
4 }
5
6 - (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
7 NSLog(@"因意外停止了触摸");
8 }
9
10 - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
11 NSLog(@"结束触摸");
12 }
13
14 //可以获得手指在视图移动的位置
15 - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
16 // CGFloat floct = [touches anyObject];
17 //手指触摸的点
18 NSLog(@"%@",[touches anyObject]);
19 //移动到的所有的点
20 // NSLog(@"%@",[touches allObjects]);
21 }
二.UITapGestureRecognizer 点击手势
创建一个view 创建手势 使用addGestureRecognizer:方法 将手势添加到view上
1 UIView * view = [[UIView alloc]initWithFrame:CGRectMake(20, 100, 200, 200)];
2 view.backgroundColor = [UIColor redColor];
3
4 //创建一个点击手势
5 UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(onClick:)];
6 //设置点击次数
7 tap.numberOfTapsRequired = 1;
8 //把手势添加到控件上
9 [view addGestureRecognizer:tap];
10
11 UITapGestureRecognizer * tap1 = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(onClicked:)];
12 tap1.numberOfTapsRequired = 2;
13 [view addGestureRecognizer:tap1];
14
15
16
17 [self.view addSubview:view];
三.UILongPressGestureRecognizer 长按手势
1 UIView * view = [[UIView alloc]initWithFrame:CGRectMake(20, 100, 200, 200)];
2 view.backgroundColor = [UIColor redColor];
3
4 //创建一个长按手势
5 UILongPressGestureRecognizer * longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(onClick:)];
6
7 //设置长按最短时间
8 longPress.minimumPressDuration = 1;
9 //设置长按手指数量
10 longPress.numberOfTouchesRequired = 2;
11
12 //把手势添加到控件上
13 [view addGestureRecognizer:longPress];
四.UISwipeGestureRecognizer 滑动手势
UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(50, 100, 100, 30)];
label.textColor = [UIColor grayColor];
label.text = @"滑动手势";
//创建滑动手势
UISwipeGestureRecognizer * swipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(onClick:)];
//添加到控件上
[label addGestureRecognizer:swipe];
//打开label的交互 默认为NO 是NO的时候 手势不能被响应
label.userInteractionEnabled = YES;
//设置滑动方向 每一个手势只能是一个方向
//如果需要多方向 需要多次创建
swipe.direction = UISwipeGestureRecognizerDirectionDown;
/*
typedef NS_OPTIONS(NSUInteger, UISwipeGestureRecognizerDirection) {
UISwipeGestureRecognizerDirectionRight = 1 << 0,
UISwipeGestureRecognizerDirectionLeft = 1 << 1,
UISwipeGestureRecognizerDirectionUp = 1 << 2,
UISwipeGestureRecognizerDirectionDown = 1 << 3
};
*/
//设置滑动手指数量
swipe.numberOfTouchesRequired = 1;
[self.view addSubview:label];
五.UIPanGestureRecognizer 拖动手势
1 - (void)createLabel{
2 UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(50, 100, 100, 30)];
3 label.textColor = [UIColor groupTableViewBackgroundColor];
4 label.text = @"拖动手势";
5 label.tag = 1;
6 //创建拖动手势
7 UIPanGestureRecognizer * pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(onClick:)];
8 //添加到控件上
9 [label addGestureRecognizer:pan];
10
11 //打开label的交互 默认为NO 是NO的时候 手势不能被响应
12 label.userInteractionEnabled = YES;
13
14
15
16 [self.view addSubview:label];
17 }
18
19 - (void)onClick:(UIPanGestureRecognizer *)pan{
20 static CGPoint offPoint;
21
22 UILabel * label = [self.view viewWithTag:1];
23 //获得手势的偏移量
24 CGPoint point = [pan translationInView:self.view];
25
26 if (pan.state == UIGestureRecognizerStateBegan) {
27 offPoint = label.center;
28 return;
29 }
30
31 label.center = CGPointMake(point.x+offPoint.x, point.y+offPoint.y);
32 }
六.UIRotationGestureRecognizer 旋转手势
1 - (void)createLabel{
2 UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(50, 100, 200, 60)];
3 label.textColor = [UIColor groupTableViewBackgroundColor];
4 label.text = @"旋转手势";
5 label.tag = 1;
6 label.textAlignment = NSTextAlignmentCenter;
7 label.adjustsFontSizeToFitWidth = YES;
8
9 label.font = [UIFont systemFontOfSize:60];
10 //创建旋转手势
11 UIRotationGestureRecognizer * rotation = [[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(onClick:)];
12 //添加到控件上
13 [label addGestureRecognizer:rotation];
14
15 //打开label的交互 默认为NO 是NO的时候 手势不能被响应
16 label.userInteractionEnabled = YES;
17 [self.view addSubview:label];
18 }
19
20 - (void)onClick:(UIRotationGestureRecognizer *)rotation{
21 UILabel * label = [self.view viewWithTag:1];
22
23 static CGFloat offFloat;
24
25 label.transform = CGAffineTransformMakeRotation(rotation.rotation +offFloat);
26 //结束时把上次旋转角度的记录下来
27 if (rotation.state == UIGestureRecognizerStateEnded) {
28 offFloat = offFloat + rotation.rotation;
29 }
30 }
七.UIPinchGestureRecognizer 捏合手势
1 - (void)createLabel{
2 UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(50, 100, 200, 60)];
3 label.textColor = [UIColor groupTableViewBackgroundColor];
4 label.text = @"捏合手势";
5 label.tag = 1;
6 label.textAlignment = NSTextAlignmentCenter;
7 label.adjustsFontSizeToFitWidth = YES;
8
9 label.font = [UIFont systemFontOfSize:60];
10 //创建捏合手势
11 UIPinchGestureRecognizer * pinchGR = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(onClick:)];
12 //添加到控件上
13 [label addGestureRecognizer:pinchGR];
14
15 //打开label的交互 默认为NO 是NO的时候 手势不能被响应
16 label.userInteractionEnabled = YES;
17 [self.view addSubview:label];
18 }
19
20 - (void)onClick:(UIPinchGestureRecognizer *)pinchGR{
21 UILabel * label = [self.view viewWithTag:1];
22 static CGFloat offFloat = 1;
23 label.transform = CGAffineTransformMakeScale(pinchGR.scale*offFloat, pinchGR.scale*offFloat);
24 //记录结束手势时的缩放比例
25 if (pinchGR.state == UIGestureRecognizerStateEnded) {
26 offFloat = offFloat* pinchGR.scale;
27 }
28 }