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
捆绑+扩展.swift
import Foundation
extension Bundle {
var versionNumber: String? {
return infoDictionary?["CFBundleShortVersionString"] as? String
}
var buildNumber: String? {
return infoDictionary?["CFBundleVersion"] as? String
}
var bundleName: String? {
return infoDictionary?["CFBundleName"] as? String
}
}
用法:
someLabel.text = Bundle.main.versionNumber
其他回答
以下是Swift 3.2的更新版本:
extension UIApplication
{
static var appVersion:String
{
if let appVersion = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString")
{
return "\(appVersion)"
}
return ""
}
static var buildNumber:String
{
if let buildNum = Bundle.main.object(forInfoDictionaryKey: kCFBundleVersionKey as String)
{
return "\(buildNum)"
}
return ""
}
static var versionString:String
{
return "\(appVersion).\(buildNumber)"
}
}
Swift 5作为UIApplication扩展
extension UIApplication {
static var release: String {
return Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as! String? ?? "x.x"
}
static var build: String {
return Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion") as! String? ?? "x"
}
static var version: String {
return "\(release).\(build)"
}
}
使用示例:
print("release: \(UIApplication.release)")
print("build: \(UIApplication.build)")
print("version: \(UIApplication.version)")
鉴于Swift一直在发展,我的回答(截至2015年8月):
let version = NSBundle.mainBundle().infoDictionary!["CFBundleVersion"] as! String
OP同时要求版本号和版本号。不幸的是,大多数答案都不提供这两个选项。另外,还有一些添加了不必要的扩展方法。这里有一个非常简单的方法,可以解决OP的问题:
// Example output: "1.0 (234)"
private func versionAndBuildNumber() -> String {
let versionNumber = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String
let buildNumber = Bundle.main.infoDictionary?["CFBundleVersion"] as? String
if let versionNumber = versionNumber, let buildNumber = buildNumber {
return "\(versionNumber) (\(buildNumber))"
} else if let versionNumber = versionNumber {
return versionNumber
} else if let buildNumber = buildNumber {
return buildNumber
} else {
return ""
}
}
EDIT
Swift 4.2更新
let appVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String
EDIT
正如@azdev在Xcode的新版本上指出的那样,你会得到一个编译错误,尝试我以前的解决方案,要解决这个问题,只需编辑它,建议使用一个打开包字典!
let nsObject: AnyObject? = Bundle.main.infoDictionary!["CFBundleShortVersionString"]
最后编辑
使用与Objective-C中相同的逻辑,但有一些小的变化
//First get the nsObject by defining as an optional anyObject
let nsObject: AnyObject? = NSBundle.mainBundle().infoDictionary["CFBundleShortVersionString"]
//Then just cast the object as a String, but be careful, you may want to double check for nil
let version = nsObject as! String