IOS开发中针对UIImageView的几种常用手势

//

//  ViewController.m

//  05-手势

//

//  Created by wanghy on 15/9/21.

//  Copyright (c) 2015年 wanghy. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIImageView* imageView;

@end

@implementation ViewController

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

// 1.创建一个手势的对象

// 2.把手势的对象添加到需要手势的view当中

// 3.实现手势的方法

//UITapGestureRecognizer(敲击)-------------

//    // 1.创建手势的对象

//    UITapGestureRecognizer* tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];

//    // 几根手指

//    tap.numberOfTouchesRequired = 2;

//    // 点几次

//    tap.numberOfTapsRequired = 2;

//    // 2.对imageView添加手势

//    [self.imageView addGestureRecognizer:tap];

//    // 3.实现方法

//UISwipeGestureRecognizer(轻扫)-------------

// 1.

UISwipeGestureRecognizer* swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];

UISwipeGestureRecognizer* swipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];

// 往左滑

swipe.direction = UISwipeGestureRecognizerDirectionLeft;

// 2.

[self.imageView addGestureRecognizer:swipe];

[self.imageView addGestureRecognizer:swipe1];

//UILongPressGestureRecognizer(长按)-------------

// 1.

UILongPressGestureRecognizer* longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];

// 长按多长时间执行方法

longPress.minimumPressDuration = 2;

// 误差

longPress.allowableMovement = 10;

// 2.

[self.imageView addGestureRecognizer:longPress];

//UIRotationGestureRecognizer(旋转)-------------

// 1

UIRotationGestureRecognizer* rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];

// 2.

[self.imageView addGestureRecognizer:rotation];

//UIPinchGestureRecognizer(捏合，用于缩放)-------------

//1.

UIPinchGestureRecognizer* pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];

// 2.

[self.imageView addGestureRecognizer:pinch];

//UIPanGestureRecognizer(拖拽)-------------

// 1.

UIPanGestureRecognizer* pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];

// 2.

[self.imageView addGestureRecognizer:pan];

}

// 拖拽

- (void)pan:(UIPanGestureRecognizer*)sender

{

CGPoint p = [sender translationInView:self.imageView];

self.imageView.transform = CGAffineTransformTranslate(self.imageView.transform, p.x, p.y);

[sender setTranslation:CGPointZero inView:self.imageView];

}

// 捏合

- (void)pinch:(UIPinchGestureRecognizer*)sender

{

//    self.imageView.transform = CGAffineTransformMakeScale(sender.scale, sender.scale);

self.imageView.transform = CGAffineTransformScale(self.imageView.transform, sender.scale, sender.scale);

sender.scale = 1;

}

// 旋转

- (void)rotation:(UIRotationGestureRecognizer*)sender

{

NSLog(@"%f", sender.rotation);

self.imageView.transform = CGAffineTransformRotate(self.imageView.transform, sender.rotation);

sender.rotation = 0;

//    self.imageView.transform = CGAffineTransformMakeRotation(sender.rotation);

}

// 长按

- (void)longPress:(UILongPressGestureRecognizer*)sender

{

// 只是想让开始的时候执行某个代码 需要判断 手势的状态

if (sender.state == UIGestureRecognizerStateBegan) {

NSLog(@"longPress");

}

}

// 轻扫

- (void)swipe:(UISwipeGestureRecognizer*)sender

{

if (sender.direction == UISwipeGestureRecognizerDirectionLeft) {

NSLog(@"left");

}

else {

NSLog(@"right");

}

}

// 敲击

- (void)tap:(UITapGestureRecognizer*)sender

{

NSLog(@"tap");

}

@end