UIGesture 缩放与旋转手势

//
//  ViewController.m
//  UIWindowsApp
//
//

#import "ViewController.h"
#import "ViewController2.h"

@interface ViewController ()

@end

@implementation ViewController




- (void)viewDidLoad {
    [super viewDidLoad];
    
    UIImage* image = [UIImage imageNamed:@"1.jpg"];
    
    UIImageView* _imageView= [[UIImageView alloc]init];
    
    _imageView.image = image;
    
    _imageView.frame = CGRectMake(50, 100, 220, 300);
    
    //_imageView.tag = 101;
    
    //是否开启交互事件响应开关，默认值为NO
    _imageView.userInteractionEnabled = YES;
    
    [self.view addSubview:_imageView];

    _pinchGes = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchAct:)];
   
//    NSLog(@"fff.");
    [_imageView addGestureRecognizer:_pinchGes];
    
    _rotGes = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotAct:)];
    
    [_imageView addGestureRecognizer:_rotGes];
    
    _pinchGes.delegate = self;
    _rotGes.delegate = self;
    
    
}

//是否可以同时响应两个手势，yes 可以，no 不可以
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

-(void) rotAct:(UIRotationGestureRecognizer*) rot
{
    NSLog(@"ddddd");
    UIImageView * _imageView = (UIImageView*) rot.view;
    
    _imageView.transform = CGAffineTransformRotate(_imageView.transform, rot.rotation);
    
    rot.rotation = 0;
}





-(void) pinchAct:(UIPinchGestureRecognizer*) pinch
{
    
    //获得监控图像的视图
    UIImageView * _imageView = (UIImageView*) pinch.view;
    
    //p1:原来的矩阵
    //p2:x方向的缩放
    //p3:y方向的缩放
    //返回值是新的缩放后的矩阵变换
    _imageView.transform = CGAffineTransformScale(_imageView.transform, pinch.scale, pinch.scale);

    //scale>1 放大
    //scale<1 缩小
    pinch.scale = 1;
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end

//
//  ViewController.h
//  UIWindowsApp


#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UIGestureRecognizerDelegate>
{
   
    //定义缩放，旋转手势
    UIPinchGestureRecognizer* _pinchGes;
    
    UIRotationGestureRecognizer* _rotGes;
    
    
}

//属性定义
//@property(retain,nonatomic) UITextField* textField;




@end