UIGesture 缩放与旋转手势

 1 //
 2 //  ViewController.m
 3 //  UIWindowsApp
 4 //
 7 //
 8
 9 #import "ViewController.h"
10 #import "ViewController2.h"
11
12 @interface ViewController ()
13
14 @end
15
16 @implementation ViewController
17
18
19
20
21 - (void)viewDidLoad {
22     [super viewDidLoad];
23
24     UIImage* image = [UIImage imageNamed:@"1.jpg"];
25
26     UIImageView* _imageView= [[UIImageView alloc]init];
27
28     _imageView.image = image;
29
30     _imageView.frame = CGRectMake(50, 100, 220, 300);
31
32     //_imageView.tag = 101;
33
34     //是否开启交互事件响应开关，默认值为NO
35     _imageView.userInteractionEnabled = YES;
36
37     [self.view addSubview:_imageView];
38
39     _pinchGes = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchAct:)];
40
41 //    NSLog(@"fff.");
42     [_imageView addGestureRecognizer:_pinchGes];
43
44     _rotGes = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotAct:)];
45
46     [_imageView addGestureRecognizer:_rotGes];
47
48     _pinchGes.delegate = self;
49     _rotGes.delegate = self;
50
51
52 }
53
54 //是否可以同时响应两个手势，yes 可以，no 不可以
55 -(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
56 {
57     return YES;
58 }
59
60 -(void) rotAct:(UIRotationGestureRecognizer*) rot
61 {
62     NSLog(@"ddddd");
63     UIImageView * _imageView = (UIImageView*) rot.view;
64
65     _imageView.transform = CGAffineTransformRotate(_imageView.transform, rot.rotation);
66
67     rot.rotation = 0;
68 }
69
70
71
72
73
74 -(void) pinchAct:(UIPinchGestureRecognizer*) pinch
75 {
76
77     //获得监控图像的视图
78     UIImageView * _imageView = (UIImageView*) pinch.view;
79
80     //p1:原来的矩阵
81     //p2:x方向的缩放
82     //p3:y方向的缩放
83     //返回值是新的缩放后的矩阵变换
84     _imageView.transform = CGAffineTransformScale(_imageView.transform, pinch.scale, pinch.scale);
85
86     //scale>1 放大
87     //scale<1 缩小
88     pinch.scale = 1;
89 }
90 - (void)didReceiveMemoryWarning {
91     [super didReceiveMemoryWarning];
92     // Dispose of any resources that can be recreated.
93 }
94
95
96 @end

 1 //
 2 //  ViewController.h
 3 //  UIWindowsApp
 4
 5
 6 #import <UIKit/UIKit.h>
 7
 8 @interface ViewController : UIViewController<UIGestureRecognizerDelegate>
 9 {
10
11     //定义缩放，旋转手势
12     UIPinchGestureRecognizer* _pinchGes;
13
14     UIRotationGestureRecognizer* _rotGes;
15
16
17 }
18
19 //属性定义
20 //@property(retain,nonatomic) UITextField* textField;
21
22
23
24
25 @end