Swift - 如何获取文件夹中的文件路径

问题描述

我在文件夹中有一组音频文件。我可以在文件放在主捆绑包时访问该文件，但如果文件在文件夹内移动，我将无法访问这些文件。

I have a set of audio files inside a folder. I am able to access the file when the file is placed at main bundle, but if the files are moved inside the folder I am not able to access the files.

代码：

let audioFileName:String = "audioFiles/" + String(index)
let audioFile = NSBundle.mainBundle().pathForResource(audioFileName, ofType: "mp3")!

我在audioFiles文件夹中有一个音频文件，我希望得到它的路径。

I have an audio file inside the folder audioFiles and I would want to get its path.

错误：

推荐答案

首先确保将文件夹audioFiles拖到项目中以选择创建文件夹引用，它应该显示一个蓝色文件夹。

First make sure when you drag your folder audioFiles to your project to select create folder references and it should show a blue folder.

NSBundle方法pathForResource还有一个初始化程序，您可以在其中指定文件所在的目录：

Also NSBundle method pathForResource has an initialiser that you can specify in which directory your files are located:

let audioFileName = "audioName"

if let audioFilePath = Bundle.main.path(forResource: audioFileName, ofType: "mp3", inDirectory: "audioFiles") {
    print(audioFilePath)
}

如果您想获取该文件URL，可以使用NSBundle方法URLForResource（withExtension：，子目录:)

If you would like to get that file URL you can use NSBundle method URLForResource(withExtension:, subdirectory:)

if let audioFileURL = Bundle.main.url(forResource: audioFileName, withExtension: "mp3", subdirectory: "audioFiles") {
    print(audioFileURL)
}

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