我按照
following post关于如何使用NSTextAttachment添加与UILabel内联的图像.我尽我所能,并在Swift中编写了我的版本.
我正在创建一个聊天应用程序,我正在插入啤酒图标的字段不会渲染图像或似乎没有内嵌渲染图像.我没有收到任何错误,所以我假设我在代码中遗漏了一些小细节.
var beerName:String!
if(sender == bn_beer1)
{
beerName = "beer1.png"
}
if(sender == bn_beer2)
{
beerName = "beer2.png"
}
if(sender == bn_beer3)
{
beerName = "beer3"
}
var attachment:NSTextAttachment = NSTextAttachment()
attachment.image = UIImage(named: beerName)
var attachmentString:NSAttributedString = NSAttributedString(attachment: attachment)
var myString:NSMutableAttributedString = NSMutableAttributedString(string: inputField.text)
myString.appendAttributedString(attachmentString)
inputField.attributedText = myString;
这不适用于UITextField.它只适用于UILabel.
这是基于您的代码的UILabel扩展(Swift 2.0)
extension UILabel
{
func addImage(imageName: String)
{
let attachment:NSTextAttachment = NSTextAttachment()
attachment.image = UIImage(named: imageName)
let attachmentString:NSAttributedString = NSAttributedString(attachment: attachment)
let myString:NSMutableAttributedString = NSMutableAttributedString(string: self.text!)
myString.appendAttributedString(attachmentString)
self.attributedText = myString
}
}
编辑：
这是一个新版本,允许在标签之前或之后添加图标.还有一个从标签中删除图标的功能
extension UILabel
{
func addImage(imageName: String,afterLabel bolAfterLabel: Bool = false)
{
let attachment: NSTextAttachment = NSTextAttachment()
attachment.image = UIImage(named: imageName)
let attachmentString: NSAttributedString = NSAttributedString(attachment: attachment)
if (bolAfterLabel)
{
let strLabelText: NSMutableAttributedString = NSMutableAttributedString(string: self.text!)
strLabelText.appendAttributedString(attachmentString)
self.attributedText = strLabelText
}
else
{
let strLabelText: NSAttributedString = NSAttributedString(string: self.text!)
let mutableAttachmentString: NSMutableAttributedString = NSMutableAttributedString(attributedString: attachmentString)
mutableAttachmentString.appendAttributedString(strLabelText)
self.attributedText = mutableAttachmentString
}
}
func removeImage()
{
let text = self.text
self.attributedText = nil
self.text = text
}
}
