如何在Swift 3中将文档目录中的图像显示到UIImageView？

Question

下面的Swift 2示例给出了以下错误:

String类型的值没有成员'stringByAppendingPathComponent'

我需要为Swift 3更改什么？

Answer 1

Apple试图将所有人从URL(即file:///path/to/file.text)的路径范式转移到URL(即).Swift API几乎完全取消path了URL.

你仍然可以在Objective-C(NSString)中找到它:

let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as String
let getImagePath = NSString.path(withComponents: [paths, "fileName"])

Swifty方式越多:

let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as String
let url = URL(fileURLWithPath: paths).appendingPathComponent("fileName")