使用Bundle(for:Type)：

let bundle = Bundle(for: type(of: self))
let path = bundle.path(forResource: filename, ofType: type)

或者按identifier（框架包ID）搜索包：

let bundle = Bundle(identifier: "com.myframework")

雨燕5

let bundle = Bundle(for: Self.self)
let path = bundle.path(forResource: "filename", ofType: ".plist")

尝试以下代码以获取自定义捆绑包：

let bundlePath = Bundle.main.path(forResource: "CustomBundle", ofType: "bundle")
let resourceBundle = Bundle.init(path: bundlePath!)

更新

如果在您的框架中，请尝试以下操作：

[[NSBundle bundleForClass:[YourClass class]] URLForResource:@"YourResourceName" withExtension:@".suffixName"];

只需指定资源的类名，下面的函数将为您提供与类关联的Bundle对象，因此，如果类与框架关联，它将提供框架的bundle。

let bundle = Bundle(for: <YourClassName>.self)

import class Foundation.Bundle

private class BundleFinder {}

extension Foundation.Bundle {
    /// Returns the resource bundle associated with the current Swift module.
    static var module: Bundle = {
        let bundleName = "ID3TagEditor_ID3TagEditorTests"

        let candidates = [
            // Bundle should be present here when the package is linked into an App.
            Bundle.main.resourceURL,

            // Bundle should be present here when the package is linked into a framework.
            Bundle(for: BundleFinder.self).resourceURL,

            // For command-line tools.
            Bundle.main.bundleURL,
        ]

        for candidate in candidates {
            let bundlePath = candidate?.appendingPathComponent(bundleName + ".bundle")
            if let bundle = bundlePath.flatMap(Bundle.init(url:)) {
                return bundle
            }
        }
        fatalError("unable to find bundle named ID3TagEditor_ID3TagEditorTests")
    }()
}

出发地：Source
---更新---
它提供了3种关于如何获得正确的bundle的注解用法，这是非常有用的，特别是当你正在开发自己的框架或使用Cocoapods时。