我试图阅读一个文本文件使用Swift游乐场与以下
let dirs : String[]? = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.UserDomainMask,true) as? String[]
if (dirs != nil) {
let directories:String[] = dirs!;
let dir = directories[0]; //documents directory
let path = dir.stringByAppendingPathComponent(file);
//read
let content = String.stringWithContentsOfFile(path,encoding: NSUTF8StringEncoding,error: nil)
}
这对我有用。我唯一改变的是明确的文件名(这在你的例子中是暗示的) – 也许你在“文件”变量的屏幕外定义中有错字？
let dirs = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,true) as? [String]
let file = "trial.txt" // My change to your code - yours is presumably set off-screen
if let directories = dirs {
let dir = directories[0]; //documents directory
let path = dir.stringByAppendingPathComponent(file);
//read
let content = NSString(contentsOfFile: path,usedEncoding: nil,error: nil)
// works...
}
