如何在NSUserDefaults中使用存储和使用NSMutableAttributedString [英] How to use store and use an NSMutableAttributedString in NSUserDefaults

问题描述

我想创建一个属性字符串，然后将其存储在NSUserDefaults中，然后再次访问它，并将属性字符串分配给textView.attributedText.我该怎么办?预先感谢.

I want to create an attributed string, then store it in NSUserDefaults, and then access it again and assign the attributed string to textView.attributedText. How do I go about this? Thanks in advance.

我不了解很多目标c，因此我无法参考此答案

I don't know a lot of objective c, so I could not refer to this answer

推荐答案

您必须将NSMutableAttributedString转换为NSData，然后将其存储在NSUserDefaults中.

You have to convert your NSMutableAttributedString into NSData then you store it in NSUserDefaults.

    // Convert into NSData
    let data = NSKeyedArchiver.archivedDataWithRootObject(distanceMutableAttributedString)
    NSUserDefaults.standardUserDefaults().setObject(data, forKey: "yourStringIntoData")

    // Convert your NSData to NSMutableAttributedString
    let yourStringInData = NSUserDefaults.standardUserDefaults().objectForKey("yourStringIntoData") as? NSData
    let newStr = NSKeyedUnarchiver.unarchiveObjectWithData(yourStringInData!) as? NSMutableAttributedString

   // Assign it to your textView
    textView.attributedText = newStr

这篇关于如何在NSUserDefaults中使用存储和使用NSMutableAttributedString的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！