如何设置"NSBackgroundColorAttributeName"；在Swift中的TTTAttributedLabel，OHAttributedLabel或SETextView上 [英] How to set "NSBackgroundColorAttributeName" on TTTAttributedLabel, OHAttributedLabel or SETextView in Swift

问题描述

我正在尝试在TTTAttributedLabel，OHAttributedLabel或SETextView上设置NSBackgroundColorAttributeName属性，但是它不起作用.有人知道吗遵循示例代码.

I'm trying to set NSBackgroundColorAttributeName attribute on TTTAttributedLabel, OHAttributedLabel or SETextView, but it's not work. Anyone have any idea? Sample code is followed.

class ViewController: UIViewController {

    @IBOutlet weak var textLabel: UILabel!
    @IBOutlet weak var ttLabel: TTTAttributedLabel!
    @IBOutlet weak var ohLabel: OHAttributedLabel!
    @IBOutlet weak var seTextView: SETextView!

    override func viewDidLoad() {
        super.viewDidLoad()

        var content: String = "This is Test."
        var text = NSMutableAttributedString(string: content)
        text.addAttribute(NSBackgroundColorAttributeName, value: UIColor.redColor(), range: NSMakeRange(0, text.length))
        textLabel.attributedText = text     // It's Work.
        ohLabel.attributedText = text       // It's not Work
        seTextView.attributedText = text    // It's not Work

        // It's not Work as well
        ttLabel.setText(content, afterInheritingLabelAttributesAndConfiguringWithBlock: {
            (attributedString) -> NSMutableAttributedString! in
            attributedString.addAttribute(NSBackgroundColorAttributeName, value: UIColor.redColor(), range: NSMakeRange(0, attributedString.length))
            //attributedString.addAttribute(kTTTBackgroundFillColorAttributeName, value: UIColor.yellowColor(), range: NSMakeRange(1, 3))
            return attributedString
        })
    }
}

此外，我可以在每个label上正确设置"NSForegroundColorAttributeName".

In addition, I can set "NSForegroundColorAttributeName" on every label properly.

推荐答案

对于TTTAttributedLabel，您应该使用

For TTTAttributedLabel, you should use the custom attributes that are specific to the label, like kTTTBackgroundFillColorAttributeName.

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