java - Android permission of creating database

Question

Hi I have some problems in creating the sqlite database in android.

Everything is ok on the emulator, I can create the database. But it doesn't work on the actually machine. When I tried to debug the application on my phone, it just failed to create the database.

So can anyone tell my what happened? Is there any special permission I need to add in the Manifest file? I've tried ACCESS_CHECKIN_PROPERTIES or WRITE_EXTERNAL_STORAGE, but still cannot get the database.

By the way, is the custom database can only be stored in the sd card but the root directory?

Thank you very much!!

Answer 1

Without any feedback in the error, it is impossible to tell you what's wrong in your code. Nevertheless, I can tell you that you do not need ACCESS_CHECKIN_PROPERTIES for using your own database. You should not need WRITE_EXTERNAL_STORAGE either unless you are trying to access the sdcard.

The databases are stored by default in a subfolder of your app folder in the internal storage, i.e.:

/data/data/YOUR_APP/databases/YOUR_DATABASAE.db

If you do that on a physical device it has to be rooted though.