PackageManager2022/6/17 23:24:00 https://developer.android.com/reference/android/content/pm/PackageManager
PackageManager#getInstalledApplications2022/6/17 23:23:00 https://developer.android.com/reference/android/content/pm/PackageManager#getInstalledApplications(android.content.pm.PackageManager.ApplicationInfoFlags)
