在UITableView中检测哪个UIButton被按下了

我有一个UITableView和5个uitableviewcell。每个单元格包含一个UIButton，设置如下:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
     NSString *identifier = @"identifier";
     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
     if (cell == nil) {
         cell = [[UITableView alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
         [cell autorelelase];

         UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 5, 40, 20)];
         [button addTarget:self action:@selector(buttonPressedAction:) forControlEvents:UIControlEventTouchUpInside];
         [button setTag:1];
         [cell.contentView addSubview:button];

         [button release];
     }

     UIButton *button = (UIButton *)[cell viewWithTag:1];
     [button setTitle:@"Edit" forState:UIControlStateNormal];

     return cell;
}

我的问题是:在buttonPressedAction:方法中，我如何知道哪个按钮被按下了。我考虑过使用标签，但我不确定这是最好的方法。我希望能够以某种方式将indexPath标记到控件上。

- (void)buttonPressedAction:(id)sender
{
    UIButton *button = (UIButton *)sender;
    // how do I know which button sent this message?
    // processing button press for this row requires an indexPath. 
}

标准的做法是什么?

编辑:

我已经通过以下方法解决了这个问题。我还是想知道这是标准的方法还是有更好的方法?

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
     NSString *identifier = @"identifier";
     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
     if (cell == nil) {
         cell = [[UITableView alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
         [cell autorelelase];

         UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 5, 40, 20)];
         [button addTarget:self action:@selector(buttonPressedAction:) forControlEvents:UIControlEventTouchUpInside];
         [cell.contentView addSubview:button];

         [button release];
     }

     UIButton *button = (UIButton *)[cell.contentView.subviews objectAtIndex:0];
     [button setTag:indexPath.row];
     [button setTitle:@"Edit" forState:UIControlStateNormal];

     return cell;
}

- (void)buttonPressedAction:(id)sender
{
    UIButton *button = (UIButton *)sender;
    int row = button.tag;
}

需要注意的是，我不能在创建单元格时设置标记，因为单元格可能会退出队列。感觉很脏。一定有更好的办法。

当前回答

A better way would be to subclass your button and add a indexPath property to it.

//Implement a subclass for UIButton.

@interface NewButton:UIButton
@property(nonatomic, strong) NSIndexPath *indexPath;


Make your button of type NewButton in the XIB or in the code whereever you are initializing them.

Then in the cellForRowAtIndexPath put the following line of code.

button.indexPath = indexPath;

return cell; //As usual



Now in your IBAction

-(IBAction)buttonClicked:(id)sender{
   NewButton *button = (NewButton *)sender;

//Now access the indexPath by buttons property..

   NSIndexPath *indexPath = button.indexPath; //:)
}

2013-10-19 08:06:31

其他回答

我遗漏了什么吗?你不能用发送者来识别按钮吗?发件人会给你这样的信息:

<UIButton: 0x4b95c10; frame = (246 26; 30 30); opaque = NO; tag = 104; layer = <CALayer: 0x4b95be0>>

然后，如果你想改变按钮的属性，比如背景图像，你只需要告诉sender:

[sender setBackgroundImage:[UIImage imageNamed:@"new-image.png"] forState:UIControlStateNormal];

如果您需要标记，那么ACBurk的方法就可以了。

2010-04-22 22:48:41

Chris Schwerdt的解决方案，但后来在Swift中对我很管用:

@IBAction func rateButtonTapped(sender: UIButton) {
    let buttonPosition : CGPoint = sender.convertPoint(CGPointZero, toView: self.ratingTableView)
    let indexPath : NSIndexPath = self.ratingTableView.indexPathForRowAtPoint(buttonPosition)!

    print(sender.tag)
    print(indexPath.row)
}

2016-10-17 12:10:18

注意这里我使用自定义单元格，这段代码完全适合我

 @IBAction func call(sender: UIButton)
    {
        var contentView = sender.superview;
        var cell = contentView?.superview as EmployeeListCustomCell
        if (!(cell.isKindOfClass(EmployeeListCustomCell)))
        {
            cell = (contentView?.superview)?.superview as EmployeeListCustomCell
        }

        let phone = cell.lblDescriptionText.text!
        //let phone = detailObject!.mobile!
        let url:NSURL = NSURL(string:"tel://"+phone)!;
        UIApplication.sharedApplication().openURL(url);
    }

2015-02-06 12:46:09

这是简单的;做一个自定义单元格，并采取一个出口的按钮

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
    {
         NSString *identifier = @"identifier";
        customCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];

    cell.yourButton.tag = indexPath.Row;

- (void)buttonPressedAction:(id)sender

将上述方法中的id更改为(UIButton *)

你可以通过sender。tag得到哪个按钮被点击的值。

2012-10-05 09:39:34

我发现使用父视图的父视图获取单元的indexPath引用的方法非常有效。感谢iphonedevbook.com (macnsmith)的提示链接文本

-(void)buttonPressed:(id)sender {
 UITableViewCell *clickedCell = (UITableViewCell *)[[sender superview] superview];
 NSIndexPath *clickedButtonPath = [self.tableView indexPathForCell:clickedCell];
...

}

2010-01-06 02:54:37

在UITableView中检测哪个UIButton被按下了

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