带有可选图像的自定义 UITableViewCell [英] Custom UITableViewCell with an optional image

问题描述

我有一个自定义 UITableView 单元格，它有一个 UIImageView 大小为顶部单元格的宽度，下面有一个 UILabel.

I have a custom UITableView cell that has a UIImageView sized to the width of the cell at the top, and a UILabel underneath it.

UITableViewCell 有一个 imageView 属性.如果设置了图像视图的图像，则它会将单元格 textLabel 推到右侧，以容纳图像.我想对我的表格视图单元做类似的事情(除了我的标签会被推下).

A UITableViewCell has an imageView property. If the image view's image is set, then it pushes the cell textLabel to the right, to accomodate the image. I would like to do something similar with my table view cell (except that my label would be pushed down).

我怎样才能做到这一点?

How could I accomplish this?

推荐答案

一个简单的方法是继承 UITableViewCell 并覆盖 layoutSubviews 方法.

A simple way to do it is to subclass UITableViewCell and override layoutSubviews method.

这是一个简单的例子.

@interface CustomCell : UITableViewCell

@end

@implementation CustomCell

- (void)layoutSubviews
{
   [super layoutSubviews];

   // grab bound for contentView
   CGRect contentViewBound = self.contentView.bounds;

   if(self.imageView.image) {
      // do stuff here, for example put the image right...
      CGRect imageViewFrame = self.imageView.frame;
      // change x position
      imageViewFrame.postion.x = contentViewBound.size.width - imageViewFrame.size.width;
      // assign the new frame
      self.imageView.frame = imageViewFrame;
   }

   else {
      // do stuff here
   }
}

特别是在此方法中，您可以根据 image 为单元格定位组件.

In particular inside this method you can position the components for your cell depending on image.

希望有帮助.

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