我有一个带有Azure后端的IOS应用程序,想要记录某些事件,如登录和应用程序用户正在运行的版本。
如何使用Swift返回版本和构建号?
我有一个带有Azure后端的IOS应用程序,想要记录某些事件,如登录和应用程序用户正在运行的版本。
如何使用Swift返回版本和构建号?
当前回答
对于任何感兴趣的人,在github上有一个漂亮而整洁的库叫做SwifterSwift,它也有完整的swift版本文档(参见swifterswift.com)。
使用这个库,读取应用版本和构建号就像这样简单:
import SwifterSwift
let buildNumber = SwifterSwift.appBuild
let version = SwifterSwift.appVersion
其他回答
看过文档后,我认为以下内容更清晰:
let version =
NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleShortVersionString")
as? String
来源: 使用此方法优于其他访问方法,因为它在键可用时返回键的本地化值。
对于Swift 3.0 NSBundle不工作,下面的代码工作完美。
let versionNumberString =
Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString")
as! String
对于版本号,它是:
let buildNumberString =
Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion")
as! String
令人困惑的'CFBundleVersion'是在Xcode General->Identity中输入的构建号。
针对Swift 3.0更新
在Swift 3.0中,ns前缀已经没有了,一些属性/方法的名称已经更改为更Swifty。这是现在的样子:
extension Bundle {
var releaseVersionNumber: String? {
return infoDictionary?["CFBundleShortVersionString"] as? String
}
var buildVersionNumber: String? {
return infoDictionary?["CFBundleVersion"] as? String
}
}
Bundle.main.releaseVersionNumber
Bundle.main.buildVersionNumber
更新答案
I've been working with Frameworks a lot since my original answer, so I wanted to update my solution to something that is both simpler and much more useful in a multi-bundle environment: extension NSBundle { var releaseVersionNumber: String? { return self.infoDictionary?["CFBundleShortVersionString"] as? String } var buildVersionNumber: String? { return self.infoDictionary?["CFBundleVersion"] as? String } } Now this extension will be useful in apps to identify both the main bundle and any other included bundles (such as a shared framework for extension programming or third frameworks like AFNetworking), like so: NSBundle.mainBundle().releaseVersionNumber NSBundle.mainBundle().buildVersionNumber // or... NSBundle(URL: someURL)?.releaseVersionNumber NSBundle(URL: someURL)?.buildVersionNumber
原来的答案
I wanted to improve on some of the answers already posted. I wrote a class extension that can be added to your tool chain to handle this in a more logical fashion. extension NSBundle { class var applicationVersionNumber: String { if let version = NSBundle.mainBundle().infoDictionary?["CFBundleShortVersionString"] as? String { return version } return "Version Number Not Available" } class var applicationBuildNumber: String { if let build = NSBundle.mainBundle().infoDictionary?["CFBundleVersion"] as? String { return build } return "Build Number Not Available" } } So now you can access this easily by: let versionNumber = NSBundle.applicationVersionNumber
我在捆绑上做了一个扩展
extension Bundle {
var appName: String {
return infoDictionary?["CFBundleName"] as! String
}
var bundleId: String {
return bundleIdentifier!
}
var versionNumber: String {
return infoDictionary?["CFBundleShortVersionString"] as! String
}
var buildNumber: String {
return infoDictionary?["CFBundleVersion"] as! String
}
}
然后使用它
versionLabel.text = "\(Bundle.main.appName) v \(Bundle.main.versionNumber) (Build \(Bundle.main.buildNumber))"
斯威夫特4
//首先通过定义一个可选的AnyObject来获取nsObject
let nsObject: AnyObject? = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as AnyObject
//然后将对象转换为String,但要小心,你可能需要再次检查是否为nil
let version = nsObject as! String