objective-c - 在选择时用自定义单元格替换标准 UITableViewCell

Question

我有一个带有标准 UITableViewCells 的 UITableview。在选择一个单元格时，我想用自定义单元格替换该单元格，该单元格使用 UITextViews 而不是 detailTextLabel 和 UITextFields 而不是 accessoryView。执行此操作的最佳方法是什么？

Answer 1

创建 UITableViewCell 的子类。将您的 UITextField 或 UITextField(以适合您的解决方案为准)添加到 contentView 中，并隐藏它们。覆盖 `-setSelected:animated:' 方法:

- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
  [super setSelected:selected animated:animated];
  if ( animated ) {
    // using old-school UIView animation support to fade in/out controls,
    // block-based much easier, but only 4.0 or greater
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];
    self.textLabel.alpha = (selected) ? 0.0 : 1.0;
    self.detailTextLabel.alpha = (selected) ? 0.0 : 1.0;
    // assumed you added a UITextView 'textView' ivar
    self.textView.alpha = (selected) ? 1.0 : 0.0;
    [UIView commitAnimations];
  }
  else {
    self.textLabel.hidden = selected;
    self.detailTextLabel.hidden = selected;
    self.textView.hidden = !selected;
  }
}

- (void)animationDidStop:(NSString *)animationID finished:(BOOL)finished context:(void *)context
{
  self.textLabel.hidden = self.selected;
  self.detailTextLabel.hidden = self.selected;
  self.textView.hidden = !self.selected;
}