iOS在一次給定時間允許一次觸摸事件

在這個應用程序中，我有4個按鈕，每個按鈕觸發一個動畫來取消隱藏UIView。但是，如果我先按一個按鈕然後按另一個按鈕，則首先出現的視圖應該消失，並且將顯示新按鈕的視圖。

我到目前爲止工作。但是，如果用戶快速點擊兩個按鈕，它將顯示兩個視圖。我如何確保只處理一次觸摸事件？

該按鈕的作用是一樣的東西：

- (void)buttonPressed:(id)sender 
{ 
    MenuButton *aButton = (MenuButton *)sender; 
    switch (aButton.tag) { 
     case 0: 
      if (displayingView && currentlyDisplayingView != picker1) 
       [self toggleView:currentlyDisplayingView atIndex:currentIndex]; 
      [self toggleView:picker1 atIndex:aButton.tag]; 
      currentlyDisplayingView = picker1; 
      currentIndex = aButton.tag; 
      break; 
     case 1: 
      if (displayingView && currentlyDisplayingView != picker2) 
       [self toggleView:currentlyDisplayingView atIndex:currentIndex]; 
      [self toggleView:picker2 atIndex:aButton.tag]; 
      currentlyDisplayingView = picker2; 
      currentIndex = aButton.tag; 
      break; 
     case 2: 
      if (displayingView && currentlyDisplayingView != picker3) 
       [self toggleView:currentlyDisplayingView atIndex:currentIndex]; 
      [self toggleView:picker3 atIndex:aButton.tag]; 
      currentlyDisplayingView = picker3; 
      currentIndex = aButton.tag; 
      break; 
     default: 
      break; 
    } 
    NSLog(@"Pressed %@",[buttonNames objectAtIndex:aButton.tag]); 
}

而且動畫代碼：

- (void)toggleView:(UIView *)picker 
      atIndex:(NSInteger)index 
{ 
    if (picker) { 
     picker.hidden = NO; 
     [UIView animateWithDuration:0.5 
         animations:^{ 
          picker.alpha = abs(picker.alpha - 1); 
          CGRect rect = picker.frame; 
          if (rect.size.height == 0){ 
           rect.size.height = 76; 
          } else if (rect.size.height == 76) { 
           rect.size.height = 0; 
          } 
          picker.frame = rect; 
          for (int i = index+1; i < [viewButtons count]; i++) { 
           UIButton *aButton = [viewButtons objectAtIndex:i]; 
           CGRect frame = aButton.frame; 
           if (rect.size.height == 0){ 
            frame.origin.y -= 75; 
           } else if (rect.size.height == 76) { 
            frame.origin.y += 75; 
           } 
           aButton.frame = frame; 
          } 
         } 
         completion:^(BOOL success){ 
          if (picker.alpha == 0){ 
           picker.hidden = YES; 
          } else if (picker.alpha == 1) { 
           picker.hidden = NO; 
          } 
          displayingView = !displayingView; 
         }]; 
    } 
}

來源

2012-02-23 Tiago Veloso

也許發佈您的按鈕操作代碼並查看動畫。也許有人可以深入瞭解可能存在的問題。 – picciano 2012-02-23 20:22:45

我已經添加了兩個片段。 – 2012-02-23 20:53:21

[全局停止所有觸摸檢測？]（http://stackoverflow.com/questions/4822000/stop-all-touch-detection-globally） – matt 2012-02-23 21:11:02

呼叫beginIgnoringInteractionEvents調用animateWithDuration之前，並在完成處理程序調用endIgnoring...。

來源

2012-02-23 20:55:55 matt

謝謝。有效。 – 2012-02-24 09:50:46

iOS在一次給定時間允許一次觸摸事件

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