NSBundle（尚未加载）

Question

我正在尝试从资源（图标）创建UIImage。我的代码大致是：

public class MyModule: NSObject {
}

let classBundle = NSBundle(forClass: MyModule.self)
let bundleURL = classBundle.URLForResource("WeatherUI", withExtension: "bundle")
let bundle = NSBundle(URL: bundleURL!)
print(bundle)

// "foo" corresponds to foo.imageset
let image = UIImage(named: "foo", inBundle: bundle, compatibleWithTraitCollection: nil)

image总是零。打印出捆绑包：

Optional(NSBundle </Users/user/Library/Developer/Xcode/DerivedData/MyModule-dxpuooiqxaovvrbdrptwxiypbvwh/Build/Products/Debug-iphonesimulator/MyModule.framework/MyModule.bundle> (not yet loaded))

路径有效（我ls编辑）。另请注意not yet loaded。我尝试重置模拟器。我也试过bundle?.load()，但结果是：

2016-07-15 15:55:24.051 MyModule_Example[25549:306130] Cannot find executable for CFBundle 0x7fc204880770 </Users/user/Library/Developer/Xcode/DerivedData/MyModule-dxpuooiqxaovvrbdrptwxiypbvwh/Build/Products/Debug-iphonesimulator/MyModule.framework/MyModule.bundle> (not loaded)

请注意not loaded。我还尝试删除DerivedData。

有什么想法吗？