iOS手势

//
//  ViewController.m
//  手势12——26class
//
//  Created by lanqs on 14-12-26.
//  Copyright (c) 2014年 Li_Qian. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

{
    UIView * _shoushiView;
    UILabel * _showLabel;
}
- (void)initUserFace;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self initUserFace];
    // Do any additional setup after loading the view, typically from a nib.
}

#pragma  mark --init

- (void)initUserFace
{
    _shoushiView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
    _shoushiView.center = self.view.center;
    _shoushiView.backgroundColor = [UIColor grayColor];
    
    [self.view addSubview:_shoushiView];
    
    _showLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 100, 100)];
    _showLabel.text = @"fdsaf";
    _showLabel.textAlignment = NSTextAlignmentCenter;
    _showLabel.center = CGPointMake(CGRectGetMidX(_shoushiView.bounds), CGRectGetMidY(_shoushiView.bounds));
    _showLabel.font = [UIFont systemFontOfSize:20];
    [self.view addSubview:_showLabel];
    
    //点击手势识别器
    
    UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(processGeture:)];
    
    tap.numberOfTouchesRequired = 1;//点击次数
    tap.numberOfTapsRequired = 1;//手指数量
    [_shoushiView addGestureRecognizer:tap];//添加手势识别器

    
    //长按 手势识别器
    
    UILongPressGestureRecognizer * longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(processGeture:)];
    longPress.minimumPressDuration = 1;//最短的触发时间
    
    [_shoushiView addGestureRecognizer:longPress];
    
    //滑动
    
    UISwipeGestureRecognizer * swipGesture =[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(processGeture:)];
    swipGesture.direction = UISwipeGestureRecognizerDirectionRight;//滑动方向的设置
    [_shoushiView addGestureRecognizer:swipGesture];
    
    
//    //拖动
    UIPanGestureRecognizer * panGesture = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(processGeture:)];
    
    //当此两个手势冲突时，swipGesture有效
    [panGesture requireGestureRecognizerToFail:swipGesture];//防止拖动 与滑动的冲突人、
    [_shoushiView addGestureRecognizer:panGesture];
    
    //捏合
    
    UIPinchGestureRecognizer * pinchGesture = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(processGeture:)];
    [_shoushiView addGestureRecognizer:pinchGesture];
    
    //旋转手势
    
    UIRotationGestureRecognizer * rotationGesture = [[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(processGeture:)];
    
    [_shoushiView addGestureRecognizer:rotationGesture];
    
}

//UIGestureRecognizer是所有手势的父类
- (void)processGeture:(UIGestureRecognizer *)gesture
{
    //判断手势的类型
    if ([gesture isKindOfClass:[UITapGestureRecognizer class]])
    {
        _showLabel.text = @"点击手势";
    }
    
    if ([gesture isKindOfClass:[UILongPressGestureRecognizer class]])
    {
         _showLabel.text = @"长按手势";
    }
    
    if ([gesture isKindOfClass:[UISwipeGestureRecognizer class]])
    {
        UISwipeGestureRecognizer * sw = (UISwipeGestureRecognizer *)gesture;
        
        if (sw.direction == UISwipeGestureRecognizerDirectionRight)//判断方向
        {
               _showLabel.text = @"滑动手势";
        }
      
        NSLog(@"fdfg");
    }
    if ([gesture isKindOfClass:[UIPanGestureRecognizer class]])
    {
        _showLabel.text = @"拖动手势";
        
        //静态定义一个点.保存初始点
        static CGPoint startPoint;
        
        //手势状态gesture.state
//        gesture.state = UIGestureRecognizerStateBegan;
        //表明pan这是一个拖动手势
        UIPanGestureRecognizer * pan = (UIPanGestureRecognizer *)gesture;
        if (pan.state == UIGestureRecognizerStateBegan)
        {
            startPoint = _shoushiView.center;
        }
        else if (pan.state == UIGestureRecognizerStateChanged)//表明点在改变
        {
            //translationInView拖动方法  是在那个视图上变化的量
            CGPoint translate = [pan translationInView:self.view];
            _shoushiView.center = CGPointMake(startPoint.x + translate.x, startPoint.y + translate.y);
        }
        
    }
    
    if ([gesture isKindOfClass:[UIPinchGestureRecognizer class]])
    {
        _showLabel.text = @"捏合手势";
        //用一个静态变量存储 上一次缩放的值
        static CGFloat lastScale;
        UIPinchGestureRecognizer * pin = (UIPinchGestureRecognizer *)gesture;
        NSLog(@"%f",pin.scale);
        if (pin.state == UIGestureRecognizerStateBegan)
        {
            lastScale = pin.scale;
        }
        else if (pin.state == UIGestureRecognizerStateChanged)
        {
            
             CGFloat changeScale = (pin.scale - lastScale) /2+ 1;
            
            _shoushiView.transform = CGAffineTransformScale(_shoushiView.transform, changeScale, changeScale);
            lastScale = pin.scale;//重点  细节点
            
            //第二种用CGAffineTransMakeScale方式
        }
    }
    
    if ([gesture isKindOfClass:[UIRotationGestureRecognizer class]])
    {
        _showLabel.text = @"旋转手势";
        
        UIRotationGestureRecognizer * rotate = (UIRotationGestureRecognizer *)gesture;
        
        static CGFloat lastRotation;//幅度值
        
        if (rotate.state == UIGestureRecognizerStateBegan)
        {
            lastRotation = rotate.rotation;
        }
        else if (rotate.state == UIGestureRecognizerStateChanged)
        {
               CGFloat changeRotation = rotate.rotation - lastRotation;
            _shoushiView.transform = CGAffineTransformRotate(_shoushiView.transform, changeRotation);
            
            lastRotation = rotate.rotation;
        }
    }
}

@end