I am developing Android application. I use SQLite to store data in user's device. The problem is I don't know where the database is. I also can't locate the package of my application in the device. Usually package can be found at directory Android/Data/com.example.xxx. Can anybody tell me why?
By the way I follow SQLite tutorial from http://www.edumobile.org/android/android-development/use-of-sqlite/
I have checked the code and it doesn't show where the database saved.
I use SQLite to store data in user's device. The problem is I don't know where the database is. I also can't locate the package of my application in the device.
You do not have access to internal storage on a production device.
Usually package can be found at directory Android/Data/com.example.xxx
I have never seen such a directory.
A SQLite database traditionally, on Android 4.1 and below, would be in /data/data/com.example.xxx/databases/. However, you can only get to that directory on the emulator and on rooted devices. And, on Android 4.2 and higher, the path to internal storage depends on the user account.
Your application can use getDatabasePath() to learn where your database is stored (e.g., for logging), and you can copy that file from within your app to external storage (e.g., via a Backup action bar item).
Related
Can anyone confirm that the documents directory file storage method with Flutter is secure or whether the AppData directory is where/how Android stores its Internal Storage files?
I'm looking at storing some persistent local data on the device but I want to make sure the data I write is not plain text or accessible by anyone/anything else. If this was a regular Android application, I'd be using Android's Internal Storage which says data stored is "private to your application and other applications cannot access them (nor can the user). When the user uninstalls your application, these files are removed."
Flutter has its own platform-agnostic way to read and write files and its documentation says saving things to its documents directory stores files "only it can access. The system clears the directory only when the app is deleted. On iOS, this corresponds to NSDocumentsDirectory. On Android, this is the AppData directory."
It looks like these are talking about the same thing and would therefore meet my security criteria, but these are things I'm not very familiar with and I don't want to take a risk with my users' data. I tried googling to find out what gets saved in the "AppData" directory on Android but mostly found people talking about their Android Studio installations.
Yes, NSDocumentDirectory on iOS and AppData on Android are secure locations.
This line from the example gives you the correct path for storing files which can only be accessed by your app:
String dir = (await PathProvider.getApplicationDocumentsDirectory()).path;
On Android dir resolves/data/data/com.yourcompany.AppName/. On iOS devices the folder is /var/mobile/Containers/Data/APP_ID/Documents.
Check the Android Security Tips , the section on Internal Storage:
By default, files that you create on internal storage are accessible
only to your app. Android implements this protection, and it's
sufficient for most applications.
The exception here is that when your app runs on a rooted Android device, the app data folder is not secure any more, see https://stackoverflow.com/a/8184699.
How to make folder and files that consists of database in .TXT and .XML appear after installation?
I know it was silly question, but I am creating an offline application using SQLite Database. If user submits the data from apps (e.g: insert to do list, create purchase order), the data will be saved and then TXT file is generated.
This .txt has role as database. The apps will get new data from .txt they recieve via email / cable data and upload .txt users generate to email. This feature is really important, so how to make those files appear in file directory? They have to be seen in order to do so.
Beside that, when I installed my apps I cant find my package folder installed. Though I did install my application from file explorer. I know that I can do it with USB Driver, but my PC couldnt update USBDriver to the phone since it said that my current one was newer. So I had to install it using package installer in my files.
I am very new in learning Android, so I hope you wouldn't mind to tell me what I need to do in my code.. Thanks.
my related previous question: Cant generate folders contains Offline Database after Android APK installation
I have created an android application for my Android device which stores records into sqlite databases and even the retrieval of the data from the database works correctly on my application. Now i want to access the database file located in the location as follows:
/data/data/org.project.compdroid.dash1/databases/data
where data is my database file.
This data file i want to export to my pc to keep a backup of all the records.
for this I first tried accessing it from the emulator by the command
adb pull /data/data/org.project.compdroid.dash1/databases/data [local address path]
this worked correctly for the emulator. but when i try to copy the same file from my Android phone it says permission denied. I think since I am not the root user for my phone I am not allowed to access it and I am allowed to achieve it in my emulator since I am already rooted there.
Now is there a way by which i will be able to copy the data file from my android phone without rooting it? or is rooting the only solution for my problem?
Please do suggest any other technique(if there are any) for copying the database files from an android phone to my computer.
Thanks in advance...
You can include code in your app that will copy the file from internal storage onto the sd card, since your App has full access to its own storage. See How to backup database to SD and Backing up your Android..
You could also spit out the Db as a text file which can then be imported into any DB.
I am working with SQLite in an App. It writes to the database, etc., with no problem. However, I can not find this new database. I have tried changing the directory with cd /data/data/packageName/databases, but it says "no such file or directory". Also, this database is not found when I click on the File Explorer in eclipse. My logging tells me the database was created and that it is being written to. I think I need to set the path in the shell or something to that effect using adb, but I have no idea how to do that. Can anyone give me some instruction? Also, I am using my phone for development. The database also does not show up when using the emulator.
Thanks very much.
Matt
Matt,
This thread gives a good explanation on why you might not be able to access the data folder on your phone.
Can't access data folder in the File Explorer of DDMS using a Nexus One!
You can still test the Sqlite code though. Just boot up an emulator. The emulator will have no access restrictions. Once it's booted up you can use the ddms tool (located in the tools directory under your android SDK install folder). It has a File Explorer and you can download the files from the /data folder.
Also, I am using my phone for development.
You cannot access the database on a standard Android device except via your own application code.
Your options are:
Do this sort of testing on an emulator, in which case you can access the directory that you are failing to access on the device
Add a database backup feature to your app, that copies the (closed) database to external storage, so you can examine it
Root your phone (leastways, I am under the impression this can help get you to this directory -- haven't done it myself)
The database also does not show up when using the emulator.
Try harder. If you can store data in the database and read data out of it using SQLiteDatabase, then the database file is there.
I am designing an app in android, for my app i created one database for data storage now i want to browse my app database from device so that i can monitor my tables and it's data. I am able to browse the database from AVD(using SQLite Database Browser) but it's not working for the device, so pls guide me.
Thanks,
Balaram.
Balaram , currently there is no way to browse database on the device (the way you want it) (without getting the root permission) similar to browsing on a SQLite Database Browser
While to browse the database on the device you need to follow programmatic steps given here at 'Using your own SQLite database in Android applications'.
Hope it is helpful.
You need to root the phone and get SuperUser permission to access app databases. The database will (after getting root) then be available in the "/data/data/com.your.application/databases" folder. Also, after getting root on your phone, you will a file browser capable of using the SU permission to display system files. For e.g. Root Explorer.
What works in the AVD works exactly the same on the device. Ideally, there is no need to grab your DB from the device. But if you must, be careful with the other system files.