iOS UI05_手势识别器

//
//  MainViewController.m
//  UI05_手势识别器
//
//  Created by dllo on 15/8/4.
//  Copyright (c) 2015年 zhozhicheng. All rights reserved.
//

#import "MainViewController.h"

@interface MainViewController ()
@property(nonatomic,retain)UIImageView *imageView;
@property(nonatomic,retain)UIAlertView *alertView;
@end

@implementation MainViewController
-(void)dealloc
{
[_imageView release];
[_alertView release];
[super dealloc];
}

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.

//UIImageView
UIImage *image=[UIImage imageNamed:@"footRight_03.jpg.jpg"];
self.imageView=[[UIImageView alloc] initWithImage:image];
self.imageView.frame=CGRectMake(50, 100, 300, 400);
[self.view addSubview:self.imageView];
[_imageView release];

//把图片的用户交互打开,默认是关闭的,此外还有一个控件是label
self.imageView.userInteractionEnabled=YES;

//手势的使用
//1.点击
UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];
//设置点击几次才会触发方法
tap.numberOfTapsRequired=2;
//设置几根手指进行点击
tap.numberOfTouchesRequired=2;

//将手势添加到对应的图片上
[self.imageView addGestureRecognizer:tap];
[tap release];
//2.长按
UILongPressGestureRecognizer *longPress=[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressAction:)];
//设置长按触发的最短时间
longPress.minimumPressDuration =2;
//用户手指在长按过程中允许移动的距离
longPress.allowableMovement=200;
//把手势添加到图片上
[self.imageView addGestureRecognizer:longPress];
[longPress release];

//3.旋转
//创建一个旋转的手势
UIRotationGestureRecognizer *rotation=[[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationAction:)];
//把手势放到对应的图片上
[self.imageView addGestureRecognizer:rotation];
//释放
[rotation release];
//4.捏合
//创建
UIPinchGestureRecognizer *pinch=[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pincheAction:)];
//添加到图片上
[self.imageView addGestureRecognizer:pinch];
//释放
[pinch release];

//5.拖拽
UIPanGestureRecognizer *pan=[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panAction:)];
[self.imageView addGestureRecognizer:pan];
[pan release];
//6.清扫
UISwipeGestureRecognizer *swipe=[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeAction:)];
[self.imageView addGestureRecognizer:swipe];
[swipe release];
//清扫的方向
swipe.direction=UISwipeGestureRecognizerDirectionUp;
//屏幕边界手势 iOS7.0之后出现的手势
//    UIScreenEdgePanGestureRecognizer

}

#pragma mark 点击方法
-(void)tapAction:(UITapGestureRecognizer *)tap
{
NSLog(@"djkdajdo");
self.imageView.image=[UIImage imageNamed:@"angry_05.jpg"];
}
#pragma mark 长按时响应方法
-(void)longPressAction:(UILongPressGestureRecognizer *)longPress
{
//长按的状态
//    longPress.state
//长按之后弹出一个UIAlerView
if (!self.alertView) {
self.alertView=[[UIAlertView alloc] initWithTitle:@"404" message:@"报错" delegate:self cancelButtonTitle:@"确认" otherButtonTitles:nil, nil];
[self.alertView show];
[_alertView release];
}

}
#pragma mark 通过图片的旋转手势,让图片发生旋转
-(void)rotationAction:(UIRotationGestureRecognizer *)rotarion
{
//可以通过手势获取手势添加的视图是哪一个
UIImageView *imageView=(UIImageView *)rotarion.view;
//进行旋转的操作
//通过视图的transform属性,让视图进行旋转
imageView.transform=CGAffineTransformRotate(imageView.transform,rotarion.rotation);
rotarion.rotation=0;
}
#pragma mark 通过捏合手势,缩放图片
-(void)pincheAction:(UIPinchGestureRecognizer *)pinche
{
//通过手势找视图
UIImageView *imageView=(UIImageView *)pinche.view;
//通过transform改变图片的尺寸
imageView.transform=CGAffineTransformScale(imageView.transform, pinche.scale, pinche.scale);
pinche.scale=1;

}
#pragma mark 通过拖拽手势,让试图随着手势移动而移动
-(void)panAction:(UIPanGestureRecognizer *)pan
{
UIImageView *imageView=(UIImageView *)pan.view;
//通过手势获得经过的点
CGPoint p=[pan translationInView:imageView];
//设置移动的位置
imageView.transform=CGAffineTransformTranslate(imageView.transform, p.x, p.y);
//为了防止手势在操作的时候试图消失
[pan setTranslation:CGPointZero inView:imageView];
}
#pragma mark 清扫的对应方法
-(void)swipeAction:(UISwipeGestureRecognizer *)swipe
{
if (swipe.direction == UISwipeGestureRecognizerDirectionUp ) {
NSLog(@"上");
}

}

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

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/

@end