UI之gestureRecognizer

屏幕的各种手势识别

#import "MangoView.h"
@interface MangoView()
@property(nonatomic,retain)UIImageView *rotationImageView;
@end
@implementation MangoView
- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self loadingCustomView];
    }
    return self;
}
- (void)dealloc{
    [self.rotationImageView release];
    [super dealloc];
}
- (void)loadingCustomView{
    self.backgroundColor = [UIColor orangeColor];
  //轻拍手势
    //初始化创建一个轻拍手势，并设置target action
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction)];
    //点击次数
    tap.numberOfTapsRequired = 1;
    //手指个数
    tap.numberOfTouchesRequired = 1;
    //将手势添加到视图上
    [self addGestureRecognizer:tap];
    [tap release];
    
    //长按手势
    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction:)];
    //长按时间
    longPress.minimumPressDuration = 0.1;
    //点击次数
    longPress.numberOfTapsRequired = 1;
    //longPress.numberOfTouchesRequired = 1;
    [self addGestureRecognizer:longPress];
    [longPress release];
    
    //创建一个UIImageView+image相框加相片
    self.rotationImageView = [[UIImageView alloc]initWithFrame:self.frame];
    self.rotationImageView.image = [UIImage imageNamed:@"1.png"];
    //打开imageView的用户交互
    self.rotationImageView.userInteractionEnabled = YES;
    [self addSubview:self.rotationImageView];
    [self.rotationImageView release];
    
   //旋转手势
    UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotation:)];
    [self.rotationImageView addGestureRecognizer:rotation];
    [rotation release];
    
    //捏合手势
    UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinchAction:)];
    [self addGestureRecognizer:pinch];
    [pinch release];
    
    //平移手势
    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panAction:)];
    [self.rotationImageView addGestureRecognizer:pan];
    [pan release];
    
    //轻扫
    //只能设置水平或者竖直方向的轻扫，不可同时设置
    UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipeAction:)];
    //设置方向，水平
    swipe.direction = UISwipeGestureRecognizerDirectionRight|UISwipeGestureRecognizerDirectionLeft;
    [self.rotationImageView addGestureRecognizer:swipe];
    [swipe release];
    UISwipeGestureRecognizer *swipe1 = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipe1Action:)];
    //设置方向，竖直
    swipe1.direction = UISwipeGestureRecognizerDirectionUp|UISwipeGestureRecognizerDirectionDown;
    [self.rotationImageView addGestureRecognizer:swipe1];
    [swipe1 release];
    
    //从屏幕边缘轻扫
    UIScreenEdgePanGestureRecognizer *screen = [[UIScreenEdgePanGestureRecognizer alloc]initWithTarget:self action:@selector(screenAction:)];
    //只能设置一个方向的边缘轻扫
    screen.edges = UIRectEdgeLeft;
    [self.rotationImageView addGestureRecognizer:screen];
    [screen release];
    
}
- (void)screenAction:(UIScreenEdgePanGestureRecognizer *)screeen{
    NSLog(@"从屏幕边缘轻扫");

}
- (void)swipeAction:(UISwipeGestureRecognizer *)swipe{
    NSLog(@"水平方向清扫");

}
- (void)swipe1Action:(UISwipeGestureRecognizer *)swipe1{
    NSLog(@"竖直方向清扫");
    
}
- (void)rotation:(UIRotationGestureRecognizer *)ro{
    //transform形变
    //第一个参数是视图原来的形变状态，旋转手势的旋转弧度
    self.rotationImageView.transform = CGAffineTransformRotate(self.rotationImageView.transform, ro.rotation);
    NSLog(@"%f",ro.rotation);
    //重置旋转角度，如果不重置那么每次的旋转都是基于原来的基础上旋转的(假如上次旋转到四十五°的位置，下一个点就是46°，如果不重置为0，那么下次的形变就是从45°的位置开始旋转46°，一下就到了91°，跨度范围越来越大，导致图片旋转越来越快)
    ro.rotation = 0;
 }
- (void)panAction:(UIPanGestureRecognizer *)pan{
    CGPoint offset = [pan translationInView:self.rotationImageView];
    self.rotationImageView.transform = CGAffineTransformTranslate(self.rotationImageView.transform, offset.x, offset.y);
    //每次相对于0.0平移
    [pan setTranslation:CGPointZero inView:self.rotationImageView];
}
- (void)pinchAction:(UIPinchGestureRecognizer *)pinch{
    //捏合手势有一个属性scale就是捏合的比例
    //第一个参数是上次形变的位置
    self.rotationImageView.transform = CGAffineTransformScale(self.rotationImageView.transform, pinch.scale, pinch.scale);
    NSLog(@"%f",pinch.scale);
    //把缩放比例重置为1.0，每次放大和缩小的比例都基于1.0
    pinch.scale = 1.0;
}
- (void)tapAction{
    NSLog(@"1根手指点击一次");
}
- (void)longPressAction:(UILongPressGestureRecognizer *)longPress{
    //长按手势默认执行两次，长按开始和手指离开都触发
    if (longPress.state  == UIGestureRecognizerStateBegan) {
         NSLog(@"*****");
    }else if (longPress.state == UIGestureRecognizerStateEnded){
        NSLog(@"@@@@@");
    }
}
@end

#import "MangoViewController.h"
#import "MangoView.h"
@interface MangoViewController ()

@end

@implementation MangoViewController
- (void)loadView{
    [super loadView];
    self.view = [[MangoView alloc] initWithFrame:self.view.frame];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end