Question

I tried to use SQLite on Android. I want to see my database file. So, I use Android File Explorer and browse this link:
Data\data\App_name But in Data\data. I cannot see my app name. (in below code will be: com/app/TimeTracker)

Here my code to test:

first is my main program:

package com.app;
    public class TimeTrackerActivity extends Activity {    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            TimeTrackerDatabase database = new TimeTrackerDatabase(this);
        }
    }

and second is my database helper:

package com.app;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class TimeTrackerDatabase extends SQLiteOpenHelper {

    public TimeTrackerDatabase(Context context){
        super(context, "timetracker.db", null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase database) {
        database.execSQL(
                "CREATE TABLE timerecords"+"id INTEGER PRIMARY KEY, time TEXT, notes TEXT)"
        );
        
    }

    @Override
    public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) {
    }

}

Is there any problem in above two file ? If has, please tell me what. And if not, please tell me how to fix this problem.

thanks 🙂

@Edit: I add my screenshot of my data folder. (No file in lib folder)

Answer 1

the database related issue will be solved by below updation in your code.

package com.app;
    public class TimeTrackerActivity extends Activity {    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            TimeTrackerDatabase database = new TimeTrackerDatabase(this);
SQLiteDatabase db = database.getWritableDatabase();   //Add this line.
        }
    }

public class TimeTrackerDatabase extends SQLiteOpenHelper {

    public TimeTrackerDatabase(Context context){
        super(context, "timetracker.db", null, 2);

    }


@Override
    public void onCreate(SQLiteDatabase database) {

     database.execSQL(

                "CREATE TABLE timerecords" +
                "(id INTEGER PRIMARY KEY, time TEXT, notes TEXT)"

        );

    }

Regarding your app not visible in File explorer, you need to search by package name as below
data/data/com.app and here you can see database folder where you can see all your databases created by application