无论方向如何，如何使 UIImageView 在 UITableViewCell 中居中？

发布于 2024-11-16 08:59:47 字数 1028 浏览 3 评论 0原文

我正在尝试使用以下代码将 UIImageView 在 UITableViewCell 中横向居中：

        // self.cover_image is a UIImage variable
        // cell is a UITableCellView

        UIImageView* backcover_imageview = [[[UIImageView alloc] initWithImage:self.cover_image] autorelease];
        [backcover_imageview sizeToFit];

        //center image
        //float xPos = cell.contentView.frame.size.width - (self.cover_image.size.width/2);

        //TODO: need better solution
        //Eyeballing attempt:
        float xPos = self.cover_image.size.width - 25;
        CGRect bookcover_frame = backcover_imageview.frame;
        bookcover_frame.origin.x = xPos;
        backcover_imageview.frame = bookcover_frame;
        backcover_imageview.tag = 9000;
        backcover_imageview.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;

        [cell.contentView addSubview:backcover_imageview];

我正在尝试将 UIImageView 在 UITableCellView 中居中，无论 iPad 或 iPhone 设备处于什么方向。有谁知道正确的方法吗这？

原文

I'm trying to center a UIImageView width-wise in a UITableViewCell with the following code:

        // self.cover_image is a UIImage variable
        // cell is a UITableCellView

        UIImageView* backcover_imageview = [[[UIImageView alloc] initWithImage:self.cover_image] autorelease];
        [backcover_imageview sizeToFit];

        //center image
        //float xPos = cell.contentView.frame.size.width - (self.cover_image.size.width/2);

        //TODO: need better solution
        //Eyeballing attempt:
        float xPos = self.cover_image.size.width - 25;
        CGRect bookcover_frame = backcover_imageview.frame;
        bookcover_frame.origin.x = xPos;
        backcover_imageview.frame = bookcover_frame;
        backcover_imageview.tag = 9000;
        backcover_imageview.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;

        [cell.contentView addSubview:backcover_imageview];

I'm trying to center the UIImageView in a UITableCellView regardless of what orientation the iPad or iPhone device is in. Does anyone know the right way to do this?

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何处潇湘 2024-11-23 08:59:47

我添加了两个自动调整大小蒙版，并使用您的代码和 PengOne 的答案得到了很好的结果：

playImage.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;
[cell.contentView addSubview:playImage];
playImage.center = CGPointMake(cell.contentView.bounds.size.width/2,cell.contentView.bounds.size.height/2);

I added two more autoresizing masks and got a good result using your code and PengOne's answer:

playImage.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;
[cell.contentView addSubview:playImage];
playImage.center = CGPointMake(cell.contentView.bounds.size.width/2,cell.contentView.bounds.size.height/2);

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无戏配角 2024-11-23 08:59:47

将 backcover_imageView 添加到单元格的 contentView 后，使用它使其居中：

imageView.center = CGPointMake(cell.contentView.bounds.size.width/2,cell.contentView.bounds.size.height/2);

After you add backcover_imageView to the contentView of the cell, use this to center it:

imageView.center = CGPointMake(cell.contentView.bounds.size.width/2,cell.contentView.bounds.size.height/2);

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半衾梦 2024-11-23 08:59:47

您可以尝试将单元格的中心属性分配给图像视图的中心属性吗？

像这样的东西

imageView.center = cell.center;

然后将其添加到单元格中。

Can you try assigning the center property of cell to that of image view?

Something like this

imageView.center = cell.center;

And then add it to the cell.

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秋风の叶未落 2024-11-23 08:59:47

您可以使用单元格的中心锚点将图像保持在中心：

image.centerXAnchor.constraint(equalTo: cell.centerXAnchor).isActive = true
image.centerYAnchor.constraint(equalTo: cell.centerYAnchor).isActive = true

You can use center anchors of the cell to keep the image in the center:

image.centerXAnchor.constraint(equalTo: cell.centerXAnchor).isActive = true
image.centerYAnchor.constraint(equalTo: cell.centerYAnchor).isActive = true

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