我正在尝试使用我作为按钮放入的图像为iOS构建自定义键盘.当我按下按钮时,链接到该按钮的图像被放入一个属性字符串,该字符串被加载到自定义键盘视图内的UiTextView中.那很有效.
问题是,当我将新图像附加到属性字符串时,字符串中的旧图像和新图像都将更改为我当前按下的图像.我无法理解为什么字符串中的旧图像正在发生变化.
有什么建议?我已经尝试使用replaceCharactersInRange和insertAttributedString但无法使其工作.这是代码(在viewDidLoad之后):
let textAttachment = NSTextAttachment()
let textView = UITextView(frame: CGRectMake(5, 5, 200, 40))
var attributedString = NSMutableAttributedString(string: "")
@IBAction func buttonPressed(button :UIButton) {
let string = button.titleLabel?.text
textAttachment.image = UIImage(named: "\(string!).png")!
textAttachment.image = UIImage(CGImage: textAttachment.image!.CGImage!, scale: 6, orientation: .Up)
let attrStringWithImage = NSAttributedString(attachment: textAttachment)
attributedString.appendAttributedString(attrStringWithImage);
textView.attributedText = attributedString;
}
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谢谢!