ios - 在 iOS8 Swift 中左对齐 AlertView 消息

Question

我创建了一个警报 View ，我想将警报 View 的文本左对齐并使用此代码。

但问题是(alert.subviews).count是0。

这是我的代码:

let alert = UIAlertView(title: "Details:", message: "Composer: abcdfg \nShow:sdfa\nPerformer:asdasdf\nLanguage:farsi\nFirst Line:asdfasdfagadf", delegate: nil, cancelButtonTitle: "OK")
                   
for view in alert.subviews{
  if view.isKindOfClass(UILabel){
    (view as UILabel).textAlignment = NSTextAlignment.Left
   }
}
println((alert.subviews).count)
alert.show()

我想将消息左对齐，但警报的 subview 计数为 0

Answer 1

警告文本“条款和条件”左对齐

 let alertController = UIAlertController(title: "iosGeek", message: "Terms and Condition", preferredStyle: .alert)
    let OKAction = UIAlertAction(title: "OK", style: .cancel) { (action) in
        alertController.dismiss(animated: true, completion: nil)
    }
    alertController.addAction(OKAction)

    let paragraphStyle = NSMutableParagraphStyle()
    paragraphStyle.alignment = NSTextAlignment.left

    let messageText = NSMutableAttributedString(
        string: "Terms and Condition",
        attributes: [
            NSParagraphStyleAttributeName: paragraphStyle,
            NSFontAttributeName: UIFont.systemFont(ofSize: 13.0)
        ]
    )

    alertController.setValue(messageText, forKey: "attributedMessage")
    self.present(alertController, animated: true, completion: nil)