Question

我已经实现了这个代码，它显示了两个标签，但没有进入单元格的按钮告诉我问题

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath  {

     static NSString *CellIdentifier = @"ImageOnRightCell";

     UILabel *mainLabel, *secondLabel;
     UIButton *buttonMe;

     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
     if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

        cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;

        mainLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 220.0, 15.0)];
        mainLabel.tag = MAINLABEL_TAG;
        mainLabel.font = [UIFont systemFontOfSize:14.0];
        mainLabel.textAlignment = UITextAlignmentRight;
        mainLabel.textColor = [UIColor blackColor];
        mainLabel.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleHeight;
        [cell.contentView addSubview:mainLabel];

        secondLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 20.0, 220.0, 25.0)];
        secondLabel.tag = SECONDLABEL_TAG;
        secondLabel.font = [UIFont systemFontOfSize:12.0];
        secondLabel.textAlignment = UITextAlignmentRight;
        secondLabel.textColor = [UIColor darkGrayColor];
        secondLabel.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleHeight;
        [cell.contentView addSubview:secondLabel];

        buttonMe = [[UIButton alloc] initWithFrame:CGRectMake(260.0, 7.0, 30.0, 30.0)];
        buttonMe.tag = PHOTO_TAG;
        buttonMe.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleHeight;
        [cell.contentView addSubview:buttonMe];
   }
   else {
       mainLabel = (UILabel *)[cell.contentView viewWithTag:MAINLABEL_TAG];
       secondLabel = (UILabel *)[cell.contentView viewWithTag:SECONDLABEL_TAG];
       buttonMe = (UIButton *)[cell.contentView viewWithTag:PHOTO_TAG];
   }

   mainLabel.text = @"main text";
   secondLabel.text = @"Secon text";
   buttonMe.titleLabel.text=@"oh";

   return cell;
}

请为此提供帮助

Answer 1

以编程方式创建按钮使用此代码

  UIButton *buttonMe = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [buttonMe addTarget:self
               action:@selector(aMethod:)
     forControlEvents:UIControlEventTouchDown];
    [buttonMe setTitle:@"Show View" forState:UIControlStateNormal];
    buttonMe.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleHeight;
    buttonMe.tag = PHOTO_TAG;

    buttonMe.frame = CGRectMake(260.0, 7.0, 30.0, 30.0);
    [cell.contentView addSubview:buttonMe];

注意我也包含了设置操作的代码。当你点击它时会尝试方法aMethod:，所以也要定义它，否则按钮点击事件会出现崩溃

Answer 2

试试这个，为buttonMe设置backgroundColor：buttonMe.backgroundColor = [UIColor grayColor]; 并将“buttonMe.titleLabel.text = @”哦“”更改为“[buttonMe setTitle：@”oh“forState：UIControlStateNormal];”

Answer 3

我认为问题在于

    buttonMe = [[UIButton alloc] initWithFrame:CGRectMake(260.0, 7.0, 30.0, 30.0)];

它会返回一个UIButtonTypeCustom类型的UIButton，它默认为透明/透明色。

因此可能会在单元格上添加但不可见，请尝试更改按钮的背景颜色并检查其是否仍然不可见。

UITableview不在iOS单元格中显示按钮

3 个答案: