UILongPressGestureRecognizer问题 [英] UILongPressGestureRecognizer issue

问题描述

我有一个关于UILongPressGestureRecognizer的问题，我已添加如下代码的手势

i have one issue regarding UILongPressGestureRecognizer, i have add gesture like below of the code

**ViewDidLoad**
UILongPressGestureRecognizer *_longRecognizer = [[UILongPressGestureRecognizer alloc]      initWithTarget:self action:@selector(ICN_TRASH_Click:)]; 
NSArray *recognizerArray = [[NSArray alloc] initWithObjects:_longRecognizer, nil];

[[self.view viewWithTag:2001] setGestureRecognizers:recognizerArray];

 OnClick
 if ([sender isKindOfClass:[UILongPressGestureRecognizer class]])  
{

  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Warning" message:@"Are you sure delete all message ?" delegate:self cancelButtonTitle:@"Yes" otherButtonTitles:@"No",nil];
  [alert show];
  [alert release];

}

所以我们长按两次按钮调用alertview，
有没有人有想法，为什么要面对这个问题。

So we Long press on button two times call alertview, does anyone have a idea, why facing this issue.

推荐答案

所以你按下按钮（然后释放它我猜并且你得到了两次消息？

So you press the button (then release it I guess) and you are getting the message two times?

也许你应该检查GestureRecognizer的状态（如果它是开始阶段或结束阶段） GestureRecognizer state 。

Perhaps you should check the state of the GestureRecognizer (like if it's the begin phase or end phase) GestureRecognizer state.

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