几种手势操作的最基本实现

工作太忙，有点懒，直接上代码了。

#import "ViewController.h"

@interface
ViewController ()

@end

@implementation ViewController

/*

 UITapGestureRecognizer         Tap（点击）

 UIPinchGestureRecognizer       Pinch（捏合）

 UIRotationGestureRecognizer    Rotation（旋转）

 UISwipeGestureRecognizer       Swipe（滑动，快速移动，是用于监测滑动的方向的）

 UIPanGestureRecognizer         Pan （拖移，慢速移动，是用于监测偏移的量的）

 UILongPressGestureRecognizer   LongPress（长按）

 */

- (void)viewDidLoad
{

    [super
viewDidLoad];

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

    

    UIButton *btn = [UIButton
buttonWithType:UIButtonTypeRoundedRect];
    [btn
setFrame:CGRectMake(50,
50, 100,
100)];

    [btn setBackgroundImage:[UIImage
imageNamed:@"1.png"]
forState:UIControlStateNormal];

    //
拖移的 Recognizer
   
UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer
alloc]initWithTarget:self                                              
action:@selector(handlePan:)];
    [btn
addGestureRecognizer:panGestureRecognizer];

    

    
   
UIView *tapView = [[UIView
alloc] initWithFrame:CGRectMake(10,
50, 300,
300)];

    [tapView setBackgroundColor:[UIColor
redColor]];

    //
单击的 Recognizer
   
UITapGestureRecognizer* singleRecognizer;
    singleRecognizer = [[UITapGestureRecognizer
alloc] initWithTarget:self
action:@selector(SingleTap:)];

    //点击的次数
    singleRecognizer.numberOfTapsRequired =
1; // 单击

    //点击的手指数
    singleRecognizer.numberOfTouchesRequired =
2;

    

    //给view添加一个手势监测；
    [tapView
addGestureRecognizer:singleRecognizer];

    

    

    //
双击的 Recognizer
   
UITapGestureRecognizer* doubleRecognizer;
    doubleRecognizer = [[UITapGestureRecognizer
alloc] initWithTarget:self
action:@selector(DoubleTap:)];
    doubleRecognizer.numberOfTapsRequired =
2; // 双击

    //关键语句，给self.view添加一个手势监测；
    [tapView
addGestureRecognizer:doubleRecognizer];

    

    //
关键在这一行，双击手势确定监测失败才会触发单击手势的相应操作
    [singleRecognizer
requireGestureRecognizerToFail:doubleRecognizer];

    

    //
捏合的 Recognizer
   
UIPinchGestureRecognizer *pinchGestureRecognizer = [[UIPinchGestureRecognizer
alloc] initWithTarget:self
action:@selector(handlePinch:)];
    [tapView
addGestureRecognizer:pinchGestureRecognizer];

    

    //
旋转的 Recognizer

    UIRotationGestureRecognizer *rotateRecognizer = [[UIRotationGestureRecognizer
alloc]
initWithTarget:self
action:@selector(handleRotate:)];
    [tapView
addGestureRecognizer:rotateRecognizer];

    

    //
长按的 Recognizer
   
UILongPressGestureRecognizer *longPressRecognizer = [[UILongPressGestureRecognizer
alloc] initWithTarget:self
action:@selector(handleLongPress:)];

    //设置长按时间间隔
    [longPressRecognizer
setMinimumPressDuration:1.0];
    [tapView
addGestureRecognizer:longPressRecognizer];

    

    //
滑动的 Recognizer
   
UISwipeGestureRecognizer *swipeRecognizer = [[UISwipeGestureRecognizer
alloc] initWithTarget:self
action:@selector(handleSwipe:)];

    //设置滑动方向

    [swipeRecognizer setDirection:UISwipeGestureRecognizerDirectionDown];
    [tapView
addGestureRecognizer:swipeRecognizer];

    

    
    [self.view
addSubview:tapView];

    [self.view
addSubview:btn];
}

- (void)handlePan:(UIPanGestureRecognizer*) recognizer
{

    NSLog(@"拖移，慢速移动");
   
CGPoint translation = [recognizer
translationInView:self.view];
    recognizer.view.center =
CGPointMake(recognizer.view.center.x + translation.x, recognizer.view.center.y
+ translation.y);

    [recognizer setTranslation:CGPointZero
inView:self.view];
}

-(void)SingleTap:(UITapGestureRecognizer*)recognizer
{

    //处理单击操作
   
NSLog(@"单击");
}

-(void)DoubleTap:(UITapGestureRecognizer*)recognizer
{

    //处理双击操作
   
NSLog(@"双击");

    
}

- (void) handlePinch:(UIPinchGestureRecognizer*) recognizer
{
   
NSLog(@"捏合, %f", recognizer.scale);
    recognizer.view.transform =
CGAffineTransformScale(recognizer.view.transform, recognizer.scale, recognizer.scale);
    recognizer.scale =
1;
}

- (void) handleRotate:(UIRotationGestureRecognizer*) recognizer
{
   
NSLog(@"旋转, %f", recognizer.rotation);

    recognizer.view.transform =
CGAffineTransformRotate(recognizer.view.transform, recognizer.rotation);
    recognizer.rotation =
0;
}

-(void)handleLongPress:(UILongPressGestureRecognizer*)recognizer
{

    //处理长按操作

    NSLog(@"长按, %f",
recognizer.minimumPressDuration);
}

-(void)handleSwipe:(UISwipeGestureRecognizer*)recognizer
{

    //处理滑动操作

    NSLog(@"滑动，快速移动");
   
CGPoint translation = [recognizer
locationInView:self.view];
   
NSLog(@"Swipe - start location: %f,%f", translation.x, translation.y);

    //    recognizer.view.transform = CGAffineTransformMakeTranslation(translation.x, translation.y);
}