双击UITableViewCell

Question

我希望只需轻按一下UITableViewCell。我为UITableview创建了一个自定义DataSource。

我怎样才能做到这一点？

Answer 1

执行此操作的正确方法是在tableView上添加UITapGestureRecognizer：

UITapGestureRecognizer* doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTap:)];
doubleTap.numberOfTapsRequired = 2;
doubleTap.numberOfTouchesRequired = 1;
[self.tableView addGestureRecognizer:doubleTap];

UITapGestureRecognizer* singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTap:)];
singleTap.numberOfTapsRequired = 1;
singleTap.numberOfTouchesRequired = 1;
[singleTap requireGestureRecognizerToFail:doubleTap];
[self.tableView addGestureRecognizer:singleTap];

然后在你的回调方法中，你会发现这样的单元格：

-(void)singleTap:(UITapGestureRecognizer*)tap
{
    if (UIGestureRecognizerStateEnded == tap.state)
    {
        CGPoint p = [tap locationInView:tap.view];
        NSIndexPath* indexPath = [_tableView indexPathForRowAtPoint:p];
        UITableViewCell* cell = [_tableView cellForRowAtIndexPath:indexPath];
        // Do your stuff
    }
}

Answer 2

我通过将以下内容添加到您的手势识别器中来实现此目的，但我发现单次点击时会有轻微的延迟。

[tapRecognizer setDelaysTouchesBegan:YES];
[tapRecognizer setCancelsTouchesInView:YES];

Answer 3

你忘了[doubleTap release];

UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTap:)];

doubleTap.numberOfTapsRequired = 2;

doubleTap.numberOfTouchesRequired = 1;

[cell addGestureRecognizer:doubleTap];

[doubleTap release];

Answer 4

您需要使用此行以分隔单击和双击。 [singleTap requireGestureRecognizerToFail：doubleTap];这是示例代码。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  // After cell initialized code
  //...
  //...

  UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTap:)];
  doubleTap.numberOfTapsRequired = 2;

  UITapGestureRecognizer* singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doSingleTap:)];
  singleTap.numberOfTapsRequired = 1;
  [singleTap requireGestureRecognizerToFail:doDoubleTap];

  [cell addGestureRecognizer:singleTap];
  [cell addGestureRecognizer:doubleTap];
  return cell;
}

-(void)doubleTap:(UITapGestureRecognizer*)tap
{
  NSLog(@"Double Taps");

  CGPoint point = [tap locationInView:self.tableView];
  NSIndexPath* indexPath = [self.tableView indexPathForRowAtPoint: point];
  UITableViewCell* cell = [self.tableView cellForRowAtIndexPath:indexPath];
  // do your stuff.
  // ...
}

-(void)singleTap:(UITapGestureRecognizer*)tap
{
  NSLog(@"Single Tap");
  CGPoint point = [tap locationInView:self.tableView];
  NSIndexPath* indexPath = [self.tableView indexPathForRowAtPoint:point];
  UITableViewCell* cell = [self.tableView cellForRowAtIndexPath:indexPath];

  // Do you stuff with index path or cell here.
  // ...

}

Answer 5

好的，这次我在单元格上添加了Button，覆盖了完整的宽度和高度。 和我使用的UIBUTTON触摸事件。

[btnCellReview addTarget:self action:@selector(multipleTap:withEvent:) 
             forControlEvents:UIControlEventTouchDownRepeat];

-(IBAction)multipleTap:(id)sender withEvent:(UIEvent*)event {    
UITouch* touch = [[event allTouches] anyObject];
if (touch.tapCount == 2) {
      // do action.    
}
}