iOS下的手势密码实现

  1 #import "ViewController.h"
  2 
  3 @interface ViewController ()
  4 
  5 @property (weak, nonatomic) IBOutlet UILabel *genstureLabel;
  6 
  7 
  8 @end
  9 
 10 @implementation ViewController
 11 
 12 - (void)viewDidLoad {
 13     [super viewDidLoad];
 14     
 15 
 16     [self tapGesture];
 17     
 18     [self SwipeGesture];
 19     
 20     [self PinchGesture];
 21     
 22     [self PanGesture];
 23     
 24     [self RotationGesture];
 25     
 26     [self LongPressGesture];
 27 }
 28 
 29 /*
 30  *  UIGestureRecognizer 定义所有手势的基本行为
 31  *
 32  *  UITapGestureRecognizer        Tap(点击)
 33  *  UIPinchGestureRecognizer      Pinch(捏合－－>放大缩小)
 34  *  UIRotationGestureRecognizer   Rotation(旋转)
 35  *  UISwipeGestureRecognizer      Swipe(轻扫，快速移动，是用于监测滑动的方向的)
 36  *  UIPanGestureRecognizer        Pan(拖拽，慢速移动，是用于监测偏移量的)
 37  *  UILongPressGestureRecognizer  LongPress(长按)
 38  */
 39 
 40 
 41 #pragma mark - UITapGestureRecognizer  Tap(点击)
 42 - (void)tapGesture{
 43     /* 一个手指单击的方法*/
 44     UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(SingleTap:)];
 45     tap.numberOfTapsRequired = 1;//点击的次数
 46     tap.numberOfTouchesRequired = 1;//手指的个数
 47     
 48     [self.view addGestureRecognizer:tap];
 49     
 50     /* 一个手指双击的方法*/
 51     UITapGestureRecognizer * tap2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(DoubleTap:)];
 52     tap2.numberOfTapsRequired = 2;//点击的次数
 53     tap2.numberOfTouchesRequired = 1;//手指的个数
 54     
 55     [self.view addGestureRecognizer:tap2];
 56     
 57     /*
 58      * 手势识别是遵循互斥的原则的，当识别为一种手势时，后面的手势就不会被识别了,这时我们可以用到下面的方法
 59     /* 当A手势发生时，即便A已经满足条件，但要等到B手势失效后才触发
 60     /* [A requireGestureRecognizerToFail:B];
 61      */
 62     [tap requireGestureRecognizerToFail:tap2];
 63     
 64     
 65     /* 两个手指单击*/
 66     UITapGestureRecognizer * tap3 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(SingleTwoFingerTap:)];
 67     tap3.numberOfTapsRequired = 1;//点击的次数
 68     tap3.numberOfTouchesRequired = 2;//手指的个数
 69     
 70     [tap2 requireGestureRecognizerToFail:tap3];
 71     
 72     [self.view addGestureRecognizer:tap3];
 73 }
 74 
 75 
 76 #pragma mark - UISwipeGestureRecognizer Swipe(轻扫，快速移动，是用于监测滑动的方向的)
 77 - (void)SwipeGesture{
 78     UISwipeGestureRecognizer * swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(SwipeAction:)];
 79     /*
 80      * 轻扫的方向，有上下左右四种，默认为向右
 81      * 
 82      * UISwipeGestureRecognizerDirectionRigh
 83      * 
 84      * UISwipeGestureRecognizerDirectionLeft
 85      * 
 86      * UISwipeGestureRecognizerDirectionUp
 87      * 
 88      * UISwipeGestureRecognizerDirectionDown
 89      */
 90     swipe.direction = UISwipeGestureRecognizerDirectionLeft;
 91     [self.view addGestureRecognizer:swipe];
 92 }
 93 
 94 #pragma mark - UIPinchGestureRecognizer Pinch(捏合－－>放大缩小)
 95 - (void)PinchGesture{
 96     UIPinchGestureRecognizer * pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(PinchActon:)];
 97     /* 
 98      * UIPinchGestureRecognizer 有两个属性
 99      * 
100      * CGFloat scale; 放大缩小的比例
101      * 
102      * CGFloat velocity; 放大缩小的速度
103      */
104     [self.view addGestureRecognizer:pinch];
105 }
106 
107 #pragma mark - UIPanGestureRecognizer Pan(拖拽，慢速移动，是用于监测偏移量的)
108 - (void)PanGesture{
109     UIPanGestureRecognizer * pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(PanAction:)];
110 
111     /*
112      *  UIPanGestureRecognizer 的两个属性
113      *  minimumNumberOfTouches －－ >最小的Touches对象
114      *  maximumNumberOfTouches －－ >最大的Touches对象
115      *
116      *  UIPanGestureRecognizer 的三个方法
117      *  返回指定的View的坐标
118      *  - (CGPoint)translationInView:(nullable UIView *)view;
119      *  设定坐标值
120      *  - (void)setTranslation:(CGPoint)translation inView:(nullable UIView *)view;
121      *  计算移动的速度 单位时像素每秒
122      *  - (CGPoint)velocityInView:(nullable UIView *)view;
123      */
124     self.genstureLabel.userInteractionEnabled = YES;
125     [self.genstureLabel addGestureRecognizer:pan];
126 }
127 
128 #pragma  mark - UIRotationGestureRecognizer Rotation(旋转)
129 - (void)RotationGesture{
130     UIRotationGestureRecognizer * rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(RotationAction:)];
131     
132     /*
133      *  UIRotationGestureRecognizer 只有两个属性
134      *  CGFloat rotation; 旋转弧度
135      *  CGFloat velocity;旋转速度 弧度每秒
136      *
137      */
138     [self.view addGestureRecognizer:rotation];
139 }
140 
141 #pragma mark - UILongPressGestureRecognizer LongPress(长按)
142 - (void)LongPressGesture{
143     UILongPressGestureRecognizer * longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(LongPressAction:)];
144     //numberOfTapsRequired 点击次数，默认时0
145     //numberOfTouchesRequired 手指数，默认为1
146     //minimumPressDuration  最短时间，默认0.5秒
147     //allowableMovement 允许运动的次数
148     longPress.minimumPressDuration = 2;
149     [self.view addGestureRecognizer:longPress];
150 }
151 
152 
153 
154 #pragma mark - 响应方法
155 - (void)SingleTap:(UITapGestureRecognizer *)tap{
156     self.genstureLabel.text = @"一个手指单击";
157 }
158 
159 - (void)DoubleTap:(UITapGestureRecognizer *)tap{
160     self.genstureLabel.text = @"一个手指双击";
161 }
162 
163 - (void)SingleTwoFingerTap:(UITapGestureRecognizer *)tap{
164     self.genstureLabel.text = @"两个手指单击";
165 }
166 
167 - (void)SwipeAction:(UISwipeGestureRecognizer *)swipe{
168     self.genstureLabel.text = @"向左轻扫";
169 }
170 
171 - (void)PinchActon:(UIPinchGestureRecognizer *)pinch{
172     float scale = pinch.scale;
173     /*
174      * 参数1:是视图本身的大小
175      *
176      * 参数2:是X方向的缩放比例
177      *
178      * 参数3:是Y方向的缩放比例
179      */
180     pinch.view.transform = CGAffineTransformScale(pinch.view.transform, scale, scale);
181 
182     if (scale > 1) {
183         self.genstureLabel.text = @"捏合放大";
184     }else if (scale < 1){
185         self.genstureLabel.text = @"捏合缩小";
186     }
187 }
188 
189 - (void)PanAction:(UIPanGestureRecognizer *)pan{
190     
191     //移动的坐标值
192     CGPoint translation = [pan translationInView:self.view];
193     //移动后的坐标
194     pan.view.center = CGPointMake(pan.view.center.x + translation.x, pan.view.center.y + translation.y);
195     
196     //设置坐标和速度
197     [pan setTranslation:CGPointZero inView:self.view];
198     
199     self.genstureLabel.text = @"把我放哪";
200     
201 }
202 
203 - (void)RotationAction:(UIRotationGestureRecognizer *)rotation{
204 
205     rotation.view.transform = CGAffineTransformRotate(rotation.view.transform, rotation.rotation);
206     rotation.rotation = M_PI;
207     _genstureLabel.text = @"旋转";
208     
209 }
210 - (void)LongPressAction:(UILongPressGestureRecognizer *)longPress{
211     
212     self.genstureLabel.text = @"长按2秒";
213     
214 }
215 
216 
217 - (void)didReceiveMemoryWarning {
218     [super didReceiveMemoryWarning];
219 
220 }
221 
222 @end