How to delete sqlite database of my application in android mobile manually

There is a function to delete DB :

https://developer.android.com/reference/android/content/Context.html#deleteDatabase(java.lang.String)

context.deleteDatabase(dbFileName)

It's that short...

If you use Room Persistence Library, then try to do the following (but maybe it also will work for other libraries, I haven't checked).

In Android Studio open View -> Tool Windows -> Device File Explorer. Then in the Device File Explorer:

1. Choose your device.
2. In the file tree navigate to /data/data/{your_package_name}/databases.
3. Delete files which names match your database name (you give a name to your database when you build RoomDatabase in your code). In my case it's my_app.db.

Here's a screenshot:

u can delete database manually by clear Data.

settings\applications\manage Applications\'select your application'\clear data.