手势识别之平移、缩放、长按、旋转、滑动

#import "ViewController.h"

@interface ViewController ()
@property(nonatomic,strong)UIImageView *imgView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
   
    self.imgView=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"test.jpg"]];
    self.imgView.frame=CGRectMake(100, 100, 100, 100);
    self.imgView.userInteractionEnabled=YES;
    self.imgView.multipleTouchEnabled=YES;
    [self.view addSubview:self.imgView];
    
     //拖动
    UIPanGestureRecognizer *panGestureRecognizer=[[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panGesture:)];
    [self.imgView addGestureRecognizer:panGestureRecognizer];
    
    //滑动手势
    UISwipeGestureRecognizer *swipeGestureRecognizer=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipeGesture:)];
    //方向
    swipeGestureRecognizer.direction=UISwipeGestureRecognizerDirectionRight|UISwipeGestureRecognizerDirectionLeft;
    [self.imgView addGestureRecognizer:swipeGestureRecognizer];
    
    //长按手势
    UILongPressGestureRecognizer *longPressGestureRecongnizer=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressGesture:)];
     //按的最短时间
    longPressGestureRecongnizer.minimumPressDuration=2.0;
    // 长按手势识别之前点击次数
    longPressGestureRecongnizer.numberOfTapsRequired=1;
    //需要几个手指
    longPressGestureRecongnizer.numberOfTouchesRequired=1;
    //运行偏移量
    longPressGestureRecongnizer.allowableMovement=10.0;
    [self.imgView addGestureRecognizer:longPressGestureRecongnizer];
    
    //旋转
    UIRotationGestureRecognizer *rotationGestureRecognizer=[[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotationGesture:)];
    [self.imgView addGestureRecognizer:rotationGestureRecognizer];
    
    //缩放
    UIPinchGestureRecognizer *pinchGestureRecognizer=[[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinchGesture:)];
    [self.imgView addGestureRecognizer:pinchGestureRecognizer];
    
    
}
//平移
-(void)panGesture:(UIPanGestureRecognizer*)pan
{
    //在View中的位置
    CGPoint point=[pan locationInView:pan.view];
    //在View中的移动量 以手指按下的为原点
    CGPoint point1=[pan translationInView:self.view];
    NSLog(@"%@",NSStringFromCGPoint(point1));
//    NSLog(@"%@",NSStringFromCGPoint(point1));
    CGPoint temp=self.imgView.center;
    temp.x+=point1.x;
    temp.y+=point1.y;
    self.imgView.center=temp;
    //偏移量是增加的应该设为0
    [pan setTranslation:CGPointZero inView:pan.view];
}
//长按
-(void)longPressGesture:(UIGestureRecognizer*)gestureRecognizer
{
    NSLog(@"UILongPressGestureRecognizer");
}
 //滑动
-(void)swipeGesture:(UIGestureRecognizer *)gestureRecognizer
{
     NSLog(@"UISwipeGestureRecognizer");
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    
}
//旋转
-(void)rotationGesture:(UIRotationGestureRecognizer *)gestureRecognizer
{
    NSLog(@"旋转的角度:%lf",gestureRecognizer.rotation);
//    self.imgView.transform=CGAffineTransformMakeRotation(gestureRecognizer.rotation);
    self.imgView.transform=CGAffineTransformRotate(self.imgView.transform, gestureRecognizer.rotation);
    gestureRecognizer.rotation=0;
}
//缩放
-(void)pinchGesture:(UIPinchGestureRecognizer *)pinchGesture
{
    NSLog(@"%lf",pinchGesture.scale);
//    self.imgView.transform=CGAffineTransformMakeScale(pinchGesture.scale, pinchGesture.scale);
    self.imgView.transform=CGAffineTransformScale(self.imgView.transform, pinchGesture.scale, pinchGesture.scale);
    //回初始值
    pinchGesture.scale=1.0;
}

@end