How to access data/data folder in Android device?

Question

I am developing an app and I know my database *.db will appear in data/data/com.****.***

I can access this file from AVD in Eclipse with he

Answer 1

You can also try copying the file to the SD Card folder, which is a public folder, then you can copy the file to your PC where you can use sqlite to access it.

Here is some code you can use to copy the file from data/data to a public storage folder:

private void copyFile(final Context context) {
    try {
        File sd = Environment.getExternalStorageDirectory();
        File data = Environment.getDataDirectory();

        if (sd.canWrite()) {
            String currentDBPath =
                    context.getDatabasePath(DATABASE_NAME).getAbsolutePath();

            String backupDBPath = "data.db";

            File currentDB = new File(currentDBPath);
            File backupDB = new File(sd, backupDBPath);

            if (currentDB.exists()) {
                FileChannel src = new FileInputStream(currentDB).getChannel();
                FileChannel dst = new FileOutputStream(backupDB).getChannel();
                dst.transferFrom(src, 0, src.size());
                src.close();
                dst.close();
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

Manifest:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />

Answer 2

To backup from Android to Desktop

Open command line cmd and run this: adb backup -f C:\Intel\xxx.ab -noapk your.app.package. Do not enter password and click on Backup my data. Make sure not to save on drive C root. You may be denied. This is why I saved on C:\Intel.

To extract the *.ab file

1. Go here and download: https://sourceforge.net/projects/adbextractor/
2. Extract the downloaded file and navigate to folder where you extracted.
3. run this with your own file names: java -jar abe.jar unpack c:\Intel\xxx.ab c:\Intel\xxx.tar

Answer 3

adb backup didn't work for me, so here's what I did (Xiaomi Redmi Note 4X, Android 6.0):
1. Go to Settings > Additional Settings > Backup & reset > Local backups.
2. Tap 'Back up' on the bottom of the screen.
3. Uncheck 'System' and 'Apps' checkmarks.
4. Tap detail disclosure button on the right of the 'Apps' cell to navigate to app selection screen.
5. Select the desired app and tap OK.
6. After the backup was completed, the actual file need to be located somehow. Mine could be found at /MIUI/backup/AllBackup/_FOLDER_NAMED_AFTER_BACKUP_CREATION_DATE_.
7. Then I followed the steps from this answer by RonTLV to actually convert the backup file (.bak in my case) to tar (duplicating from the original answer):
"
a) Go here and download: https://sourceforge.net/projects/adbextractor/
b) Extract the downloaded file and navigate to folder where you extracted.
c) run this with your own file names: java -jar abe.jar unpack c:\Intel\xxx.ab c:\Intel\xxx.tar
"

Answer 4

you can copy this db file to somewhere in eclipse explorer (eg:sdcard or PC),and you can use sqlite to access and update this db file .

Answer 5

On a rooted device, the correct solution is this:

Open cmd
Change your directory and go into 'Platform tools'
Type 'adb shell'
su
Press 'Allow' on device
chmod 777 /data /data/data /data/data/*
Open DDMS view in Eclipse/IntelliJ and from there open 'FileExplorer' to get your desired file

The original solution worked, but the chmod would return unknown directory. Changing the chmod command to /data/data/* gave access to all subfolders in the data directory from DDMS in Intellij. I assume the same solution is true for Eclipse DDMS.

UPDATE So, what I've found is strange. I'm running a Nexus 6 using DDMS in IntelliJ (Android Device Monitor). I have built a little starter app. Said app saves data to a .csv file in data/data/com.example.myapp/files

When I first started to try to access this file on my Nexus 6, I found that I have to root the device.. I could see the data folder, but trying to open it would not work. As mentioned online in other places, the expand + would vanish then reappear shortly thereafter (note, there are solutions on the web that claim to allow access to these folders without rooting, I didn't find them till too late, and I'm not sure if I prefer not to root anyway ((I'd rather be able to do it manually than rely on an app or command prompt to give me my solutions))). I rooted my 6 and tried DDMS again.

At this point, it showed me the data folder and I could expand the folder and see the com. directories, but I could not open any of them. That is when I discovered the above solution. The initial instructions would not work on this part:

chmod 777 /data /data/data /data/data/com.application.pacakage /data/data/com.application.pacakage/*

That is when I tried the solution I posted:

chmod 777 /data /data/data /data/data/*

That solution seemed to work, but only on certain folders. I now could expand my myapp folder, but could not expand the files directory in it.

At this point, I played around for a while then figured why not just try it on the directory I need rather than trying these wildcard entries.

chmod 777 /data /data/data /data/data/com.example.myapp/*

Followed by:

chmod 777 /data /data/data /data/data/com.example.myapp/files

These commands allowed me to expand and view the files in my app's directory to confirm that the .csv was being saved correctly.

Hope this helps someone. I struggled with this for hours!

(to compound on this a tad further, oddly enough, the permissions did not pass to the .csv file that passed to the files directory. my files directory permissions read drwxrwxrwx and my log.csv file permissions read -rw-rw---- .. just fyi)

Answer 6

You could also try fetching the db using root explorer app. And if that does not work then you can try this:

1. Open cmd
2. Change your directory and go into 'Platform tools'
3. Type 'adb shell'
4. su
5. Press 'Allow' on device
6. chmod 777 /data /data/data /data/data/com.application.package /data/data/com.application.package/*
7. Open DDMS view in Eclipse and from there open 'FileExplorer' to get your desired file

After this you should be able to browse the files on the rooted device.