理想情况下，我想无线地执行此操作，不仅备份我的数据，还要备份我的用户设置。是否可以备份Android设备的图像 - 以便甚至不需要重新安装应用程序？
Can anyone recommend a good way to backup Android devices?
Ideally I would like to do this wirelessly and, not only backup my data, but also my user settings. Is it possible to backup an image of an Android device - so that one doesn't even need to reinstall apps?
It would be particularly useful to hear from users that have restored backups, as to how easy, and complete, their processes were. Thanks
If you want to do what is essentially a 1-to-1 backup of your device, you can use a custom recovery to create a "nandroid" backup. Doing so effectively creates disk images of your NAND partitions (hence "nandroid") that you can restore from at a later point. This is going to vary a bit by device and recovery system, but in general if you want to perform a full backup of your phone's internal memory you would need to:
Root your device and install a custom recovery. The most popular recovery is probably ClockworkMod. How you install it will vary widely by device, but ROM Manager can do it for you on most popular devices. You simply launch ROM Manager and select "Flash ClockworkMod Recovery" from the main menu.
If using ClockworkMod, open ROM Manager and select "Backup current ROM". This should do all of the work for you.
If not using ROM Manager or if you use a recovery other than ClockworkMod:
adb reboot recoveryfrom a connected PC with ADB configured and set up. There may be other requirements for getting into recovery depending on your device (e.g. the Kindle Fire is very different from others).
Once the backup has been performed you should be able to use it to recover from many "soft" bricks. However, the two situations you would not be able to recover from with a backup alone would be:
In both of thse scenarios, you would first need to fix the offending partition (bootloader or recovery) before being able to restore the backup. Basically, anything that prevents you from accessing your recovery partition will also prevent you from using your recovery to restore your backup. Such situations are, I would say, fairly rare. You can use a backup to recover a bad
/system partition, so flashing a kernel or ROM should have an extremely small likelihood of permanently bricking your device (unless it modifies your recovery or bootloader, as noted above).
You may be able to flash an uncompressed backup from
fastboot but this would depend on what recovery you are using and how it performs its backups. As I recall, ClockworkMod simply uses
dd to create the image and they actually will flash correctly on some devices. However, I would strongly advise researching this before trying as a bad fastboot write could soft brick you as well. Of course, as long as you don't try to overwite your bootloader you won't lose access to
fastboot, so in some ways this could be a "nothing ventured, nothing gained" situation.
To actually restore a backup you can:
If not using ROM Manager or not using ClockworkMod:
Nandroid backups are, by default, stored on your external storage device in pretty much every situation. Some exceptions may be devices with no separate external storage (e.g. devices like the Galaxy Nexus) where the
/sdcard directory is actually on the physical internal storage. In any case, though, it will save to your
/sdcard directory, which is readable from a PC as USB mass storage or
adb. You can copy a nandroid backup off of your phone and onto a computer for safe-keeping, then copy it back over later if you need to restore.
To do this you can simply plug in your device and look for a path like
/sdcard/TWRP for TeamWin recovery, possibly elsewhere for others). Then you can copy the contents of the folder over to your computer. Alternatively, you can pull it with
adb by plugging in the device and issuing something akin to:
adb pull /path/to/backups
...from a PC shell.
The requirement being that you must be ROOTED, you could get Titanium Backup and back up your phone using that.
The reason for using Titanium Backup is so that you can selectively restore parts of your data if you were to install a different version and/or build of Android. NANDROID backup is good for having a safe image to fall back on but it isn't good for restoring data on top of a new OS installation (there are side effects sometimes).
A good way to back up app data if you're not rooted is to used
adb from the Android SDK. For example, to back up the data for Locale, you'd do something like the following:
adb pull /data/data/com.twofortyfouram.locale/ C:\backup\locale\
And to restore, just use
adb push with the same arguments in reverse order, i.e.:
adb push C:\backup\locale\ /data/data/com.twofortyfouram.locale/
You should be able to back up apps from
/data/app/ the same way.
There are a number of apps you can use but many will already have the ES File Manager
Note: Turn off as many apps as you can. Some apps will not backup while running.
While the backup is running, you can watch its progress by opening the notification bar
The applications will be copied into backup/apps
Depending on your phone is the complexity of this task.
HTC Evo (and supported phones) you can use unrEVOked root tool to get root access. Install Titanium Backup and back everything (system included) up onto the memory card (and can copy it to your computer for extra backup).
Otherwise you need to either get something similar to unrEVOked to root and use Titanium.
If not possible, you need to root your phone and do a NANDROID backup. This backs up everything on the phone's memory as an image and can be restored at any point to fully replace anything on the phone with what it was, even if you installed another version of android.
Otherwise... HTC PC Sync? By that is kinda crappy compared to the other tools.
If you don't have root, you can use MyBackup. It can save applications & media (photos, music, videos), and it can save data (contacts, SMS, MMS, alarms, ...).
Unfortunately it requires internet connection (for MyBackup / Rerware account) even for local save and restore (e.g. on SD card), and free version is single phone only (you cannot copy backup to other phone).
Note that non-root version is less powerful than e.g. Titanium Backup or MyBackup Root.
There is also Helium (formerly Carbon), which also doesn't require root.