UIButton索引路径在UITableView中返回错误的路径

时间:2014-10-13 14:12:33

标签: ios objective-c xcode

我正在尝试在正确填充的UITableView中访问按钮索引路径。我在另一个XIB中定制的每个单元格中都有两个标签和一个按钮。当我单击任何部分中任何行中的按钮时,它返回错误的索引路径。我想知道是什么原因引起的。您可以在下面找到我的代码。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"ProgramCell";

    ProgramCell *cell = (ProgramCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

    if (cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ProgramCell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }
    [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; 
    [cell.contentView setUserInteractionEnabled: NO]; //


    NSString* strTemp = [NSString stringWithFormat: @"%d/%d", indexPath.section, indexPath.row ];

    for (int i = 0; i < buttonClickedArray.count; i++) {

        if([[buttonClickedArray objectAtIndex:i] isEqualToString:strTemp])
        {
            [cell.btnHatirlat setBackgroundColor:[UIColor colorWithRed:0.0 green:0.5 blue:0. alpha:0.7]];
            [cell.btnHatirlat setTitle:@"Eklendi" forState:UIControlStateNormal];
        }
    }

    NSString *str = @"";
    str = [arrayPazartesi objectAtIndex:indexPath.row];


    if ([str length] > 1)
    {
        NSString *strSaat = [str substringToIndex:5];
        NSString *strEtkinlikAdi = [str substringFromIndex:6];
        cell.lblEtkinlik.text = strEtkinlikAdi;
        cell.lblSaat.text = strSaat;
        [cell.btnHatirlat addTarget:self action:@selector(hatirlat:)
                   forControlEvents:UIControlEventTouchUpInside ];
    }

    return cell;
}

- (void) hatirlat:(UIButton *)sender
{      
    CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.tableProgram];
    NSIndexPath *indexPath = [self.tableProgram indexPathForRowAtPoint:buttonPosition];
    int j = indexPath.section; //true section
    int i = indexPath.row; //wrong row
}

3 个答案:

答案 0 :(得分:6)

之前我已经看过这个问题(但是找不到参考),修复就是不选择按钮的一角(我认为这只是一个问题,如果按钮位于顶部一个细胞)。而不是,

CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.tableProgram];

尝试这样做,以确保你不是正确的,

CGPoint boundsCenter = CGRectOffset(sender.bounds, sender.frame.size.width/2, sender.frame.size.height/2).origin;
CGPoint buttonPosition = [sender convertPoint:boundsCenter toView:self.tableView];

答案 1 :(得分:0)

请尝试使用此功能。我见过很多人抱怨这种方法很奇怪。

CGPoint point = [self.tableView convertPoint:sender.frame.origin fromView:sender.superview]; 
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:point];

修改

执行此操作的首选方法是让单元格创建按钮(可能在init期间)。并为此单元定义一个协议,该协议返回对该单元的引用。将单元格设置为按钮委托,单击该按钮时,将对单元格的引用传递回单元格委托,可以调用

NSIndexPath *indexPath = [tableView indexPathForCell:cell];

e.g。

UITableViewCell.h

@protocol MyCellDelegate <NSObject>

@optional
- (void)cell:(UITableViewCell *)cell buttonPressed:(UIButton *)button;

@end


@interface MyCell : UITableViewCell

@property (weak, nonatomic) id<MyCellDelegate> delegate;

UITableViewCell.m

- (void)setDataWithDictionary:(NSDictionary *)dictionary
{
    [self.titleLbl setText:[dictionary objectForKey:@"title"]];
    [self.amountLbl setText:[dictionary objectForKey:@"amount"]];

    btn = [[UIButton alloc] init];
    [btn addTarget:self action:@selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
    .....
}

- (void)buttonPressed
{
    if(self.delegate)
    {
        if([self.delegate respondsToSelector:@selector(cell:buttonPressed:)])
        {
            [self.delegate cell:self buttonPressed:btn];
        }
    }
}

答案 2 :(得分:0)

为什么不在UIButtons内的tag cellForRowAtIndexPath内设置元素索引? 每次推送UIButton hatirlat 时都会被调用,您可以通过发件人访问索引。

由于您的两个UITableViews,可能会导致问题,但我不确切知道您的代码。

- (void) hatirlat:(UIButton *)sender{
    UIButton *button = (UIButton *)sender;
    _arrayForPosition[button.tag];
}