ios - 如果找到搜索栏文本，则更改表格 View 的字母颜色

Question

我有搜索栏和表格 View 。我可以根据搜索栏文本过滤表格 View 项目。但我必须改变发现字母的颜色。例如，如果我将 HE 写到搜索栏，我想在表格 View 中显示 HELLO，但 HE 的颜色应该与 LLO 不同。

谢谢你的想法。

Answer 1

使用 NSMutableAttributedString 作为你的概念，这里我告诉逻辑在你需要的地方自定义你自己(必须在 cellForRow 中调用)

    lblcheck.text = "hello" // is the original text 
    lblcheck.textColor = UIColor.red // initally set the whole color for your text
    //Create mutable string from original one
    let attString = NSMutableAttributedString(string: lblcheck.text!)
    //Fing range of the string you want to change colour
    //If you need to change colour in more that one place just repeat it
    let range: NSRange = (lblcheck.text! as NSString).range(of: "he", options: .caseInsensitive) //he in here use searchBar.text
    attString.addAttribute(NSForegroundColorAttributeName, value: UIColor.white, range: range) // here set selection color what ever you typed
    //Add it to the label - notice its not text property but it's attributeText
    lblcheck.attributedText = attString