iphone上下左右手势判断代码

最新推荐文章于 2025-12-04 14:59:40 发布

转载最新推荐文章于 2025-12-04 14:59:40 发布 · 3.7k 阅读

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#iphone #up #360

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本文介绍如何在iOS应用中实现各种方向的手势识别功能，包括向上、向下、向左及向右的滑动手势，并提供了详细的代码示例。

 - (void)viewDidLoad {
    UISwipeGestureRecognizer *recognizer; 
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)]; 
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)]; 
    [[self view] addGestureRecognizer:recognizer]; 
    [recognizer release];
     recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)]; 
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)]; 
    [[self view] addGestureRecognizer:recognizer]; 
    [recognizer release]; 
    
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)]; 
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
    [[self view] addGestureRecognizer:recognizer]; 
    [recognizer release]; 
    
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)]; 
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)]; 
    [[self view] addGestureRecognizer:recognizer]; 
    [recognizer release];

    [super viewDidLoad];
 }

-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer { 
     NSLog(@"Swipe received."); 
     if (recognizer.direction==UISwipeGestureRecognizerDirectionDown) { 
                NSLog(@"swipe down");
    //执行程序
}
if (recognizer.direction==UISwipeGestureRecognizerDirectionUp) { 
	NSLog(@"swipe up");
	//执行程序
}
if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft) { 
	NSLog(@"swipe left");
	//执行程序
}
if (recognizer.direction==UISwipeGestureRecognizerDirectionRight) { 
	NSLog(@"swipe right");
	//执行程序
}
}

其他参考
http://www.cnblogs.com/wujian1360/archive/2011/08/29/2158305.html

http://o0o0o0o.iteye.com/blog/875333

http://blog.sina.com.cn/s/blog_6f40a0e70100p6bt.html