Question

我在每个单元格中都有一个UITableViewCell UIButton。按下按钮时，我将其状态设置为高亮显示，如this回答：

[self performSelector:@selector(doHighlight:) withObject:[cell.subviews objectAtIndex:2] afterDelay:0.0];

然后我这样做：

- (void)doHighlight:(UIButton *)sender {

    if (sender.highlighted) {
        [sender setHighlighted:NO];
    } else {
    [sender setHighlighted:YES];
    }
}

但按钮不仅没有突出显示，也没有说明我应该能够突出显示它。

关于什么是错的任何想法？

Answer 1

我最终使用了UIButton的{{1}}属性。它不需要任何selected，它可以很好地处理这类事情：

delay

Answer 2

这是您正在寻找的可能解决方案。我修改了我的答案

 UIButton *button=[cell.subviews objectAtIndex:2];

//I am adding these five lines to ensure the different 
//states of the button to achieve your highlighted state goal. 

UIImage *highlightImage = [UIImage imageNamed:@"highlight.png"];//Also used  when button is selected
UIImage *normalImage = [UIImage imageNamed:@"normal.png"];
[button setBackgroundImage:normalImage forState:(UIControlStateHighlighted)];
[button setBackgroundImage:highlightImage forState:(UIControlStateSelected)];
[button setBackgroundImage:normalImage forState:UIControlStateNormal];

 [self performSelector:@selector(doHighlight:) withObject:[cell.subviews objectAtIndex:2]];

-(IBAction) doHighlight:(id)sender
{
    if ([sender isKindOfClass:[UIButton class]])
    {
        UIButton *btn=(UIButton*)sender;
        if (btn.isSelected) {
            [btn setSelected:NO];
        }
        else
        {
            [btn setSelected:YES];
        }
    }
}

无法将UIButton.highlighted设置为NO

2 个答案: