如何检测iOS中的日常首次启动？

let firstLaunchKey = "firstLaunchKey"
let isFirstLaunch = !UserDefaults.standard.bool(forKey: firstLaunchKey)

if isFirstLaunch {
    // 首次启动逻辑
    UserDefaults.standard.set(true, forKey: firstLaunchKey)
    UserDefaults.standard.synchronize()
} else {
    // 非首次启动逻辑
}

let fileManager = FileManager.default
let firstLaunchPath = "path/to/firstLaunch.txt"
let isFirstLaunch = !fileManager.fileExists(atPath: firstLaunchPath)

if isFirstLaunch {
    // 首次启动逻辑
    try? "".write(toFile: firstLaunchPath, atomically: true, encoding: .utf8)
} else {
    // 非首次启动逻辑
}

import Security

let firstLaunchKey = "com.example.firstLaunchKey"
let isFirstLaunch = !KeychainWrapper.standard.hasValue(forKey: firstLaunchKey)

if isFirstLaunch {
    // 首次启动逻辑
    KeychainWrapper.standard.set(true, forKey: firstLaunchKey)
} else {
    // 非首次启动逻辑
}