Question

我正在尝试按照Apple的示例使用自定义披露按钮。我正在做以下

- (void) customButtonTapped:(UIButton *)sender event: (id) event{

    NSSet *touches = [event allTouches];
    UITouch *touch = [touches anyObject];
    CGPoint currentTouchPosition = [touch locationInView:self.tableView];
    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint: currentTouchPosition];
    NSLog(@"index path %@", indexPath);
    if (indexPath != nil)
    {

    }


}

问题是索引路径总是为零。每一次都没有失败。还有其他人遇到过这个吗？

修改这就是我添加按钮的方式

 cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
 UIImage *image = [UIImage imageNamed:@"Gear"];
 UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
 CGRect frame = CGRectMake(0.0, 0.0, image.size.width, image.size.height);
 button.frame = frame;
 [button setBackgroundImage:image forState:UIControlStateNormal];
 button.backgroundColor = [UIColor clearColor];
 [button addTarget:self action:@selector(customButtonTapped:event:) forControlEvents:UIControlEventTouchUpInside];
 cell.accessoryView = button;

Answer 1

如果indexPathForRowAtPoint:为nil，则self.tableView的来电可以返回nil。

确保self.tableView已设置（例如，如果它是IBOutlet，请确保它已连接到xib中的表视图）。

UITableViewCell indexPathForRowAtPoint始终返回nil

1 个答案: