将rtf文件加载到Swift 2中的UITextView中

Question

有人可以帮我用Swift 2将rtf文本加载到UITextView中吗？我得到的答案已经过时了。该文本是关于如何玩我正在应用程序中编写的游戏的说明。到目前为止，我所能做的就是将所有rtf文本复制并粘贴到占位符框中。这适用于模拟器中的iPhone，但是当我在iPad模拟器或iPhone 6 Plus中尝试时，出现这种情况时会出现双垂直滚动条。它看起来很乱。

我现在也有一个相同文件的真实纯文本，所以我们也可以尝试。

Answer 1

斯威夫特3

        if let rtfPath = Bundle.main.url(forResource: "SomeTextFile", withExtension: "rtf") {
            do {
                let attributedStringWithRtf:NSAttributedString = try NSAttributedString(url: rtfPath, options: [NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType], documentAttributes: nil)
                self.textView.attributedText = attributedStringWithRtf
            } catch let error {
                print("Got an error \(error)") 
            }
        }

斯威夫特4和5

    if let rtfPath = Bundle.main.url(forResource: "someRTFFile", withExtension: "rtf") {
        do {
            let attributedStringWithRtf: NSAttributedString = try NSAttributedString(url: rtfPath, options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.rtf], documentAttributes: nil)
            self.textView.attributedText = attributedStringWithRtf
        } catch let error {
            print("Got an error \(error)")
        }
    }

Answer 2

if let rtfPath = NSBundle.mainBundle().URLForResource("description_ar", withExtension: "rtf") 
{
    let attributedStringWithRtf = NSAttributedString(fileURL: rtfPath, options: [NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType], documentAttributes: nil, error: nil)
    self.textView.attributedText = attributedStringWithRtf
}

Answer 3

您可以在Swift 2中使用以下代码读取rtf文件。

加载RTF文件

    let path = NSBundle.mainBundle().pathForResource("sample-rtf", ofType: "rtf")

    let contents: NSString
    do {
        contents = try NSString(contentsOfFile: path!, encoding: NSUTF8StringEncoding)
    } catch _ {
        contents = ""
    }

    let array : NSArray = contents.componentsSeparatedByString("\n");

    self.textView.text  = (array.objectAtIndex(0) as! String);

    //self.textView.text  = contents as String

尝试使用纯文本（txt）文件而不是rtf。 RTF文件也包含有关文本的格式信息。这是你阅读内容后看到的不必要的东西。

在Mac TextEdit中打开rtf文件，然后按Cmd + Shift + T（这会将其转换为纯文本并删除所有格式），然后另存为txt。

加载文本文件

    let path = NSBundle.mainBundle().pathForResource("sample-text", ofType: "txt")

    let contents: NSString
    do {
        contents = try NSString(contentsOfFile: path!, encoding: NSUTF8StringEncoding)
    } catch _ {
        contents = ""
    }

     self.textView.text  = contents as String

Answer 4

Swift 3代码：

if let rtfPath = Bundle.main.url(forResource: "description_ar", withExtension: "rtf") {
    do {
        let attributedStringWithRtf:NSAttributedString = try NSAttributedString(url: rtfPath, options: [NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType], documentAttributes: nil)
            self.textView.attributedText = attributedStringWithRtf
        } catch {
            print("We got an error \(error)") //or handle how you want
        }
}

受@MikeG启发的编辑和更新 10月21日更新的灵感来自@ RAJAMOHAN-S和@biomiker