使用Swift获取版本和构建信息

我试图访问Main NSBundle以检索版本和构建信息。问题是，我想快速尝试它，我知道如何使用Objective-C检索它Build.text = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];。但是我不知道从哪里开始，我试图用新的语法写它毫无用处。

Swift语法出了什么问题？这似乎可行：

if let text = Bundle.main.infoDictionary?["CFBundleVersion"] as? String {
    print(text)
}

Swift 3/4版本

func version() -> String {
    let dictionary = Bundle.main.infoDictionary!
    let version = dictionary["CFBundleShortVersionString"] as! String
    let build = dictionary["CFBundleVersion"] as! String
    return "\(version) build \(build)"
} 

Swift 2.x版本

func version() -> String {
    let dictionary = NSBundle.mainBundle().infoDictionary!
    let version = dictionary["CFBundleShortVersionString"] as String
    let build = dictionary["CFBundleVersion"] as String
    return "\(version) build \(build)"
}

如这里所见。

对于Xcode 6的最终版本，请使用

NSBundle.mainBundle().infoDictionary?["CFBundleVersion"] as? String

“？” infoDictionary之后的字符在这里很重要

这是获取构建和版本的简单方法。

对于Swift 4.X

 if let version = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String {
     print(version)
   }

 if let build = Bundle.main.infoDictionary?["CFBundleVersion"] as? String {
     print(build)
   }

对于目标C

NSString *build = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];

NSString * currentVersion = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];

让我知道是否有任何问题。这对我有用。

对于SWIFTY方式AppName，AppVersion并BuildNumber...

if let dict = NSBundle.mainBundle().infoDictionary {
   if let version = dict["CFBundleShortVersionString"] as? String,
       let bundleVersion = dict["CFBundleVersion"] as? String,
       let appName = dict["CFBundleName"] as? String {
           return "You're using \(appName) v\(version) (Build \(bundleVersion))."
   }
}

很快，我将其作为UIApplication的扩展，如下所示：

extension UIApplication {

    func applicationVersion() -> String {

        return NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleShortVersionString") as! String
    }

    func applicationBuild() -> String {

        return NSBundle.mainBundle().objectForInfoDictionaryKey(kCFBundleVersionKey as String) as! String
    }

    func versionBuild() -> String {

        let version = self.applicationVersion()
        let build = self.applicationBuild()

        return "v\(version)(\(build))"
    }
}

然后，您可以使用以下命令获取所需的一切：

let version = UIApplication.sharedApplication.applicationVersion() // 1
let build = UIApplication.sharedApplication.applicationBuild() // 80
let both = UIApplication.sharedApplication.versionBuild() // 1(80)

//返回应用的版本号

public static var appVersion: String? {
    return Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String
}

//返回应用的内部版本号

public static var appBuild: String? {
    return Bundle.main.object(forInfoDictionaryKey: kCFBundleVersionKey as String) as? String
}

斯威夫特5.0

我为Swift 5创建了一个包装器，以在我所有应用程序中的某个位置获取一些与应用程序相关的字符串，称为AppInfo。

struct AppInfo {

var appName : String {
    return readFromInfoPlist(withKey: "CFBundleName") ?? "(unknown app name)"
}

var version : String {
    return readFromInfoPlist(withKey: "CFBundleShortVersionString") ?? "(unknown app version)"
}

var build : String {
    return readFromInfoPlist(withKey: "CFBundleVersion") ?? "(unknown build number)"
}

var minimumOSVersion : String {
    return readFromInfoPlist(withKey: "MinimumOSVersion") ?? "(unknown minimum OSVersion)"
}

var copyrightNotice : String {
    return readFromInfoPlist(withKey: "NSHumanReadableCopyright") ?? "(unknown copyright notice)"
}

var bundleIdentifier : String {
    return readFromInfoPlist(withKey: "CFBundleIdentifier") ?? "(unknown bundle identifier)"
}

var developer : String { return "my awesome name" }

// lets hold a reference to the Info.plist of the app as Dictionary
private let infoPlistDictionary = Bundle.main.infoDictionary

/// Retrieves and returns associated values (of Type String) from info.Plist of the app.
private func readFromInfoPlist(withKey key: String) -> String? {
    return infoPlistDictionary?[key] as? String
     }
}

您可以这样使用它：

print("The apps name = \(AppInfo.appname)")

这段代码适用于Swift 3，Xcode 8：

let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") ?? "0"
let build = Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion") ?? "0"

对于Swift 3，替换main和Bundle的NSBundle替换为main即可。

let AppVersion = Bundle.main.infoDictionary!["CFBundleVersion"] as! String

[更新：Xcode 6.3.1]我尝试了以上所有方法，但在Xcode 6.3.1中这些都不起作用，但是我发现这样做：

(NSBundle.mainBundle().infoDictionary?["CFBundleVersion"] as? String)!

另一个选择是在AppDelegate中定义变量：

var applicationVersion:String {
    return NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleShortVersionString") as! String
}
var applicationBuild:String  {
    return NSBundle.mainBundle().objectForInfoDictionaryKey(kCFBundleVersionKey as String) as! String
}
var versionBuild:String  {
    let version = self.applicationVersion
    let build = self.applicationBuild
    return "version:\(version) build:(\(build))"
}

可以在AppDelegate中作为变量引用

迅捷3：

let textVersion
 = Bundle.main.infoDictionary?["CFBundleVersion"] as? String

SWIFT 3版本

if let infoPath = Bundle.main.path(forResource: "Info.plist", ofType: nil),
        let infoAttr = try? FileManager.default.attributesOfItem(atPath: infoPath),
        let infoDate = infoAttr[.creationDate] as? Date
{
    return infoDate
}
return Date()

要获得框架的结果，您可以使用

let version = Bundle(for: type(of: self)).infoDictionary?["CFBundleShortVersionString"] as? String

或在测试中

let version = Bundle(for: <SomeClass>.self).infoDictionary?["CFBundleShortVersionString"] as? String