📅  最后修改于: 2023-12-03 15:29:20.476000             🧑  作者: Mango
Android Backup is a feature in Android that allows users to back up and restore their data on their device. This includes app data, call history, contacts, system settings, and more. The backup is encrypted and stored securely on Google Drive.
To create a backup, users can go to Settings > System > Backup and select "Back up now". It's important to note that not all data may be backed up, as this depends on the app developer's implementation of the backup feature.
Additionally, users can create a backup of their device using the adb (Android Debug Bridge) tool on their computer. This creates a backup file with the extension .ab. The command to create a backup is:
adb backup -apk -shared -all -f backup.ab
This backs up all user apps and their data, as well as device-wide shared data and system settings.
To restore a backup, users can go to Settings > System > Backup and select "Restore". They will be prompted to select the backup file from Google Drive.
Alternatively, users can restore a backup using the adb tool on their computer. The command to restore a backup is:
adb restore backup.ab
There are some limitations to the Android Backup feature. Firstly, it doesn't back up data from non-Google apps that don't implement the backup feature. Additionally, backups older than 60 days may be automatically deleted from Google Drive. Finally, the backup feature only works with devices running Android 6.0 (Marshmallow) or higher.
Overall, the Android Backup feature is a useful tool for users to quickly and easily back up their device data. However, it's important to keep its limitations in mind and consider alternative backup options for important data.