過程既觸摸事件和手勢識別

Question

我用UISwipeGestureRecognizer和我重寫

-(void)touchesBegan...,-(void)touchesEnded...,-(void)touchesMoved... methods. 

看來的touchesBegan和touchesMoved保持跟蹤直到觸摸滑動手勢識別，touchesEnded不叫（同touchesCancelled）。但我需要滑動手勢識別器和touchesEnded來完成這項工作，我該怎麼做？

Answer 1

首先，將滑動手勢識別器從庫中拖放到視圖中。

你檢查過在查看取消的項目。

寫代碼來響應滑動手勢。

- (IBAction)swipe:(id)sender { 
    v.backgroundColor = [UIColor blueColor]; 
} 

然後，寫入觸摸委託方法。

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    UITouch* touch = [touches anyObject];  
    CGPoint pt = [touch locationInView:self]; 
    layer.frame = CGRectMake(pt.x, pt.y, 100, 100); 
} 

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    UITouch* touch = [touches anyObject];  
    CGPoint pt = [touch locationInView:self]; 
    layer.frame = CGRectMake(pt.x, pt.y, 100, 100); 
} 

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    layer.frame = CGRectMake(0, 0, 100, 100); 
} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    self.backgroundColor = [UIColor redColor]; 
} 

現在你可以將圖像不取消，你可以滑動屏幕來設置顏色爲藍色（滑動手勢識別成功）。你可以。而且，當觸摸結束時，窗口顏色變爲紅色。

您可以下載這個示例項目，只是運行它：

https://github.com/weed/p120812_TouchAndGesture