请使用以下代码适用于 Swift 4 及以上版本：
将以下代码添加到 appdelegate 中：
private func getJailbrokenStatus() -> Bool {
if TARGET_IPHONE_SIMULATOR != 1 {
// Check 1 : existence of files that are common for jailbroken devices
if FileManager.default.fileExists(atPath: "/Applications/Cydia.app")
|| FileManager.default.fileExists(atPath: "/Library/MobileSubstrate/MobileSubstrate.dylib")
|| FileManager.default.fileExists(atPath: "/bin/bash")
|| FileManager.default.fileExists(atPath: "/usr/sbin/sshd")
|| FileManager.default.fileExists(atPath: "/etc/apt")
|| FileManager.default.fileExists(atPath: "/private/var/lib/apt/")
|| UIApplication.shared.canOpenURL(URL(string:"cydia://package/com.example.package")!) {
return true
}
// Check 2 : Reading and writing in system directories (sandbox violation)
let stringToWrite = "Jailbreak Test"
do {
try stringToWrite.write(toFile:"/private/JailbreakTest.txt", atomically:true, encoding:String.Encoding.utf8)
//Device is jailbroken
return true
} catch {
return false
}
}
else {
return false
}
}
在Appdelegate方法中，编写以下代码：
func applicationDidBecomeActive (_ application: UIApplication) {
if getJailbrokenStatus() {
let alert = UIAlertController(title: LocalizedKeys.Errors.jailbreakError, message: LocalizedKeys.Errors.jailbreakErrorMessage, preferredStyle: UIAlertController.Style.alert)
let jailBrokenView = UIViewController()
jailBrokenView.view.frame = UIScreen.main.bounds
jailBrokenView.view.backgroundColor = .white
self.window?.rootViewController = jailBrokenView
jailBrokenView.present(alert, animated: true, completion: nil)
}
if #available(iOS 11.0, *) {
if !UIScreen.main.isCaptured {
DispatchQueue.main.async {
self.blockImageView.removeFromSuperview()
}
}
}
}