Question

这是我的代码

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{

    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

    [button setImage:[UIImage imageNamed:@"Add_plus_iCon_iphone_4s"] forState:UIControlStateNormal];

    button.frame = CGRectMake(sectionView.frame.size.width-10, 10, 20, 20);

    [button addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];

    [sectionView addSubview:button];

}

- (void)btnAction:(UIButton *)sender

{

int i = [sender.titleLabel.text intValue];
NSNumber *numb;
if(i == 0)

{
    numb = [NSNumber numberWithBool:NO];
    sender.titleLabel.text = @"1";
    [sender setImage:[UIImage imageNamed:@"Add_minus_iCon_iphone_4s"] forState:UIControlStateNormal];
    [sender setImage:[UIImage imageNamed:@"Add_plus_iCon_iphone_4s"] forState:UIControlStateHighlighted];
}
else
{
    numb = [NSNumber numberWithBool:YES];
    sender.titleLabel.text = @"0";
    [sender setImage:[UIImage imageNamed:@"Add_plus_iCon_iphone_4s"] forState:UIControlStateNormal];
    [sender setImage:[UIImage imageNamed:@"Add_minus_iCon_iphone_4s"] forState:UIControlStateHighlighted];
}
}

Answer 1

首先在ViewDidLoad中设置状态（UIControlStateNormal，UIControlStateSelected）按钮的图像，然后执行[cell.btnSelect setSelected：YES];或[cell.btnSelect setSelected：NO];根据要求。

否则在点击按钮时更改UIControlStateNormal的图像。

Answer 2

每次标题加载时都会创建UIButton，导致按钮重置， 1种方法是在storyborad或xib中设计单元格并使用引用，还有一个DataSource来跟踪值 e.g。

 if([dataSouce containsObject:yourItem]){
        //selected button image
        [cell.btnSelect setSelected:YES];
    }
    else{
        //unselected button image

        [cell.btnSelect setSelected:NO];

    }

如何更改添加到ios中UITableview部分标题的按钮图像

2 个答案: