Tableview部分標題中的復選框

Question

如何在tableview部分標題中實現復選框。 我的代碼是

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    UIView *tempView=[[UIView alloc]initWithFrame:CGRectMake(0,200,300,244)];
    tempView.backgroundColor=[UIColor clearColor];

     UIButton *leftSecCheckBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [leftSecCheckBtn setBackgroundImage:[UIImage imageNamed:@"checkbox_empty.png"] forState:UIControlStateNormal];
    [leftSecCheckBtn setBackgroundImage:[UIImage imageNamed:@"checkmark_Tick.png"] forState:UIControlStateSelected];
    [leftSecCheckBtn setFrame:CGRectMake(22,-2, 26, 26)];
    [leftSecCheckBtn addTarget:self
               action:@selector(leftSectionCheckBox:)
     forControlEvents:UIControlEventTouchUpInside];
    [tempView addSubview:leftSecCheckBtn];

}

-(void)leftSectionCheckBox:(id)sender
{   
    UIButton *selectedButton = (UIButton *) sender;
    {
        if([selectedButton isSelected ]==YES)
        {
            [selectedButton setSelected:NO];
        }
        else
        {
            [selectedButton setSelected:YES];
        }
    }
}

在ViewForHeader函數中添加了按鈕，但是，按鈕的圖像沒有改變，

Answer 1

我認為這可以幫助：

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

sender.selected = !sender.isSelected;
if([selectedButton isSelected ]==YES)  [selectedButton setSelected:NO];
else  [selectedButton setSelected:YES];
}

或者您可以這樣做：

-(void)leftSectionCheckBox:(id)sender {  
for (UIButton * selectedButton in [[tableView headerViewForSection:0]subviews]) {
    if ([selectedButton isKindOfClass:[UIButton class]]) {
       if([selectedButton isSelected ]==YES) [selectedButton setSelected:NO];
       else  [selectedButton setSelected:YES];
      }
}}

Answer 2

嘗試這個

    -(void)leftSectionCheckBox:(id)sender
    {   
        UIButton *selectedButton = (UIButton *) sender;

            if([selectedButton isSelected ]==YES)
            {
                [selectedButton setSelected:NO];
                [leftSecCheckBtn setBackgroundImage:[UIImage imageNamed:@"checkbox_empty.png"] forState:UIControlStateNormal];
            }
            else
            {
                [selectedButton setSelected:YES];
                [leftSecCheckBtn setBackgroundImage:[UIImage imageNamed:@"checkmark_Tick.png"] forState:UIControlStateNormal];
            }
      }

我更新了答案之一。 否則，您必須通過界面生成器來完成。

Answer 3

將您的tempView用戶交互設置為啟用，

[tempView setUserInteractionEnabled:YES];

您可以最小化您的方法，例如

-(void)leftSectionCheckBox:(UIButton *)selectedButton
{    
  selectedButton.selected = !selectedButton.selected;
}