UIPanGestureRecognizer类——为view添加手势

转自http://www.cnblogs.com/wujian1360/archive/2011/08/29/2158305.html

#import <UIKit/UIKit.h>

@interface TestGestureRecognizerViewController : UIViewController {
    UIView *aView;
}
@property(nonatomic,retain)IBOutlet UIView *aView;
@end


///////////////////////////////////////////////////////////////////////////////////////////////




#import "TestGestureRecognizerViewController.h"
#import <QuartzCore/QuartzCore.h>//导入框架


@implementation TestGestureRecognizerViewController
@synthesize aView;


-(void)handelPan:(UIPanGestureRecognizer*)gestureRecognizer{
    //获取平移手势对象在self.view的位置点，并将这个点作为self.aView的center,这样就实现了拖动的效果
    CGPoint curPoint = [gestureRecognizer locationInView:self.view];
    [self.aView setCenter:curPoint];
}
-(void)handelTap:(UITapGestureRecognizer *)gestureRecognizer{
    NSLog(@"%s",__FUNCTION__);
    [NSRunLoop cancelPreviousPerformRequestsWithTarget:self];//双击事件取消延时
}
//单击方法
-(void)handelSingleTap:(UITapGestureRecognizer*)gestureRecognizer{
    NSLog(@"%s",__FUNCTION__);
    [self performSelector:@selector(singleTap:) withObject:nil afterDelay:0.2];
}
-(void)singleTap:(id)sender{
    NSLog(@"%s",__FUNCTION__);
}


- (void)viewDidLoad {
    [super viewDidLoad];


    //创建一个平移手势对象，该对象可以调用handelPan：方法
    UIPanGestureRecognizer *panGes = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handelPan:)];
    [self.aView addGestureRecognizer:panGes];
    [panGes release];


    //创建一个点击手势对象，该对象可以调用handelTap：方法
    UITapGestureRecognizer *tapGes = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handelTap:)];
    [self.view addGestureRecognizer:tapGes];
    [tapGes release];
    [tapGes setNumberOfTouchesRequired:1];//触摸点个数
    [tapGes setNumberOfTapsRequired:2];//点击次数


    //创建一个点击手势对象，该对象可以调用handelSingleTap：方法
    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handelSingleTap:)];
    [self.view addGestureRecognizer:singleTap];
    [singleTap release];
    [singleTap setNumberOfTouchesRequired:1];//触摸点个数
    [singleTap setNumberOfTapsRequired:1];//点击次数
}


- (void)dealloc {
    [super dealloc];
}


@end