如何在iOS 10中自动调整包含文本的“收藏视图”单元格的大小[已关闭]

您必须创建自己的子类 UICollectionViewFlowLayout 并将情节提要中“集合视图”的“流布局”对象设置为此自定义类,然后在自定义类中编写以下代码:

override init() {
    super.init()
    estimatedItemSize = UICollectionViewFlowLayoutAutomaticSize
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
}

显然,您必须将应用程序的目标设置为iOS 10

override func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind
 kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {

    let header = collectionView.dequeueReusableSupplementaryViewOfKind(kind,      
    withReuseIdentifier: "headerId", forIndexPath: indexPath)

    return header
}

您可能需要在UICollectionView单元格的标题中使用此方法 还要设置此标头的大小,方法:

 func collectionView(collectionView: UICollectionView, layoutcollectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
    return CGSize(width: view.frame.width, height: 50)
}

如果您有自己的头类,请确保在viewDidLoad中注册它

    collectionView?.registerClass(HeaderCell.self, forSupplementaryViewOfKind: UICollectionElementKindSectionHeader, withReuseIdentifier: "headerId")

试试这个:

func collectionView(collectionView: UICollectionView,layout collectionViewLayout: UICollectionViewLayout,sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
    // Calculating size of string for given fontsize
    let text = someDataArray[indexPath.row]
    let font = UIFont.boldSystemFontOfSize(15) // use your font size
    let attributedText = NSAttributedString(string: text, attributes: [NSFontAttributeName : font])
    let height = attributedText.boundingRectWithSize(CGSizeMake(self.view.bounds.width, CGFloat.max), options: [NSStringDrawingOptions.UsesFontLeading, NSStringDrawingOptions.UsesLineFragmentOrigin], context: nil).height
    let size = CGSize(width: self.view.bounds.width, height: height)
    return size
}

该函数计算给定字符串的单元格高度、字体大小和宽度。(我使用self.view.bounds.width,所以单元格与屏幕一样宽)