SQLiteDatabase Android + parse.com

Question

I want to take the data from parse.com

public void ParseQueryMap() {
         query = new ParseQuery("MyObject"); 
         query.findInBackground(new FindCallback() {
              public void done(List<ParseObject> myObject, ParseException e) {
              if (e == null) {
                  for ( int i = 0; i < myObject.size(); i++) {              
                              stranaGet = myObject.get(i).getString("Country");
                              oblastGet = myObject.get(i).getString("District");
                              gorodGet = myObject.get(i).getString("City");
                     }
              } 
}

And I want to make all of this data into the database Android

DBHelper dbHelper;
 @Override
     public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);    
        setContentView(R.layout.main);

            dbHelper = new DBHelper(this);
            ContentValues cv = new ContentValues();
            SQLiteDatabase db = dbHelper.getWritableDatabase();
            String name = etName.getText().toString();
            String email = etEmail.getText().toString();

            cv.put("name", name);
            cv.put("email", email);
            Cursor c = db.query("mytable", null, null, null, null, null, null);

            if (c.moveToFirst()) {


        int idColIndex = c.getColumnIndex("id");
        int nameColIndex = c.getColumnIndex("name");
        int emailColIndex = c.getColumnIndex("email");

        do {
          Log.d(LOG_TAG, "ID = " + c.getInt(idColIndex) + 
                                 ", name = " + c.getString(nameColIndex) + 
                                 ", email = " + c.getString(emailColIndex));
          } while (c.moveToNext());
        } else {
         Log.d(LOG_TAG, "0 rows");
        c.close();
        }

       dbHelper.close();

}

    class DBHelper extends SQLiteOpenHelper {

        public DBHelper(Context context) {
          super(context, "myDB", null, 1);
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
           db.execSQL("create table mytable ("
              + "id integer primary key autoincrement," 
              + "name text,"
              + "email text" + ");");
        }

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

        }
      }

In this example, the data is taken from EditText, but I want to fill a database with a parse.com. How can this be? UPDATE: I tried to like this

public void ParseQueryMap() {
             query = new ParseQuery("MyObject"); 
             query.findInBackground(new FindCallback() {
                  public void done(List<ParseObject> myObject, ParseException e) {
                  if (e == null) {
                      for ( int i = 0; i < myObject.size(); i++) {              
                                  stranaGet = myObject.get(i).getString("Country");
                                  oblastGet = myObject.get(i).getString("District");
                                  gorodGet = myObject.get(i).getString("City");
                                  cv.put("name",  stranaGet);
                                  cv.put("email", oblastGet);
                                  db.insert("mytable", null, cv);
                         }
                  } 
    }

but nothing happens

Answer 1

The query method is used to read data.

To insert data, use the insert method; like this:

db.insert("mytable", null, cv);

Answer 2

There is a better way to do it.

If you are using some ORM engines for Android (such as OrmLite ), which allow you to map database entities to java-classes, integration with parse.com is very simple and straight forward. Actually, when I discovered ORM in android, I cannot live without it any more :)

Let's assume you have your entity-class, mapped to some database table. You can add annotations to its fields for mapping them on to parse.com corresponding class fields. Then you write a code that handles these annotations accordingly.

But actually, you don't have to write the code anymore. Here is a simple implementation of the idea: https://github.com/ntoskrnl/DataSync

Feel free to contribute :)

In short, the library provides methods to convert annotated classes to ParseObject and vice versa. Also it provides you a simple method to synchronize your local and remote data (it uses parse objectId and updatedAt fields to decide what to do)