I have done this by using following :
Root your device and try this code::
public void copyDbToSdcard()
{
try
{
String comando = "cp -r /data/data/com.whatsapp/databases/msgstore.db /sdcard/My_Custom_Folder/";
Process suProcess = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(suProcess.getOutputStream());
os.writeBytes(comando + "\n");
os.flush();
os.writeBytes("exit\n");
os.flush();
try
{
int suProcessRetval = suProcess.waitFor();
if(255 != suProcessRetval)
{
//
}
else
{
//
}
}
catch (Exception ex)
{
Log.e("ERROR-->", ex.toString());
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
private void openAndQueryDatabase()
{
try
{
DataBaseHelper dbHelper = new DataBaseHelper(this.getApplicationContext());
newDB = dbHelper.getWritableDatabase();
Cursor c = newDB.rawQuery("SELECT data FROM messages where data!=''", null);
if(c != null)
{
if(c.moveToFirst())
{
do
{
String data = c.getString(c.getColumnIndex("data"));
results.add(data); //adding to arrayList
}
while (c.moveToNext());
}
}
while (c3.moveToNext());
}
}
}
catch (SQLiteException se)
{
Log.e(getClass().getSimpleName(), "Could not create or Open the database");
}
}
And then display results in your TextView
or wherever you want.