package com.example.customcontentprovider;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentValues;
import android.database.Cursor;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void onClickAddName(View view) {
        // Add a new student record
        ContentValues values = new ContentValues();
        values.put(StudentsProvider.NAME,
                ((EditText) findViewById(R.id.name)).getText().toString());

        values.put(StudentsProvider.GRADE,
                ((EditText) findViewById(R.id.grade)).getText().toString());

        Uri uri = getContentResolver().insert(StudentsProvider.CONTENT_URI, values);
        Toast.makeText(getBaseContext(), uri.toString(), Toast.LENGTH_LONG).show();
    }

    public void onClickRetrieveStudents(View view) {
        // Retrieve student records
        String URL = "content://com.example.MyApplication.StudentsProvider";

        Uri students = Uri.parse(URL);
        Cursor c = getContentResolver().query(students, null, null, null, null);

        String myStudents=null;

        for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) {
            myStudents = myStudents + c.getString(c.getColumnIndex(StudentsProvider._ID)) + ", " + c.getString(c.getColumnIndex(StudentsProvider.NAME)) + ", " + c.getString(c.getColumnIndex(StudentsProvider.GRADE));
        }
        Toast.makeText(this, myStudents, Toast.LENGTH_SHORT).show();
    }
}