我正在尝试访问主要
NSBundletext = [NSBundle.mainBundle.infoDictionary objectForKey:@"CFBundleVersion"];
但是我不知道从哪里开始使用 Swift，我尝试用新语法编写它但没有成功。
Swift 语法出了什么问题？这似乎有效：
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)"
}
如此处所见。
ab 斯威夫特 5.0
我创建了一个包装器，以在我所有应用程序的一个位置获取一些 app 相关字符串，称为 AppInfo。
/// Wrapper to get some app related strings at one place.
struct AppInfo {
/// Returns the official app name, defined in your project data.
var appName : String {
return readFromInfoPlist(withKey: "CFBundleName") ?? "(unknown app name)"
}
/// Return the official app display name, eventually defined in your 'infoplist'.
var displayName : String {
return readFromInfoPlist(withKey: "CFBundleDisplayName") ?? "(unknown app display name)"
}
/// Returns the official version, defined in your project data.
var version : String {
return readFromInfoPlist(withKey: "CFBundleShortVersionString") ?? "(unknown app version)"
}
/// Returns the official 'build', defined in your project data.
var build : String {
return readFromInfoPlist(withKey: "CFBundleVersion") ?? "(unknown build number)"
}
/// Returns the minimum OS version defined in your project data.
var minimumOSVersion : String {
return readFromInfoPlist(withKey: "MinimumOSVersion") ?? "(unknown minimum OSVersion)"
}
/// Returns the copyright notice eventually defined in your project data.
var copyrightNotice : String {
return readFromInfoPlist(withKey: "NSHumanReadableCopyright") ?? "(unknown copyright notice)"
}
/// Returns the official bundle identifier defined in your project data.
var bundleIdentifier : String {
return readFromInfoPlist(withKey: "CFBundleIdentifier") ?? "(unknown bundle identifier)"
}
var developer : String { return "my awesome name" }
// MARK: - Private stuff
// 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
}
}
坚果：
print("Name of the app: \(AppInfo().appName)")
对于 Xcode 6 最终版本使用
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。
适用于 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"];
如果有任何问题请告诉我。这对我有用。
快捷方式
AppNameAppVersionBuildNumberif 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，我会将其作为 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内容来获取您需要的一切：
let version = UIApplication.sharedApplication.applicationVersion() // 1
let build = UIApplication.sharedApplication.applicationBuild() // 80
let both = UIApplication.sharedApplication.versionBuild() // 1(80)
//返回应用程序的版本号
public static var appVersion: String? {
return Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String
}
//返回应用程序的版本号
public static var appBuild: String? {
return Bundle.main.object(forInfoDictionaryKey: kCFBundleVersionKey as String) as? String
}
另一种选择是在 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
此代码适用于 Swift 3、Xcode 8：
let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") ?? "0"
let build = Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion") ?? "0"
对于 Swift 3，将 NSBundle 替换为 Bundle，mainBundle 则简单地替换为 main。
let AppVersion = Bundle.main.infoDictionary!["CFBundleVersion"] as! String
[更新：Xcode 6.3.1] 我尝试了以上所有方法，但这些方法在 Xcode 6.3.1 中都不起作用，但我发现可以：
(NSBundle.mainBundle().infoDictionary?["CFBundleVersion"] as? String)!
斯威夫特 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()
从框架的捆绑包中获取版本
要获得框架结果，您可以使用
//inside framework
let version = bundle.infoDictionary?["CFBundleShortVersionString"] as? String
Swift 100% 工作测试
您可以通过使用单个变量轻松获得这一点并将其公开。您可以在任何您想要的地方使用它。
（我正在获取 API 标头的用户代理）
public let userAgent: String = {
if let info = Bundle.main.infoDictionary {
let executable = info[kCFBundleExecutableKey as String] as? String ?? "Unknown"
let bundle = info[kCFBundleIdentifierKey as String] as? String ?? "Unknown"
let appVersion = info["CFBundleShortVersionString"] as? String ?? "Unknown"
let appBuild = info[kCFBundleVersionKey as String] as? String ?? "Unknown"
let osNameVersion: String = {
let version = ProcessInfo.processInfo.operatingSystemVersion
let versionString = "\(version.majorVersion).\(version.minorVersion).\(version.patchVersion)"
let osName: String = {
#if os(iOS)
return "iOS"
#elseif os(watchOS)
return "watchOS"
#elseif os(tvOS)
return "tvOS"
#elseif os(macOS)
return "OS X"
#elseif os(Linux)
return "Linux"
#else
return "Unknown"
#endif
}()
return "\(osName) \(versionString)"
}()
return "\(executable)/\(appVersion) (\(bundle); build:\(appBuild); \(osNameVersion)) "
}
return "MyApp"
}()
输出：
"User-Agent": "MyApp/4.6.0 (com.app.myapp; build:4.6.0.0; iOS 15.2.0) "