Android Tutorial - Android Development Guru

MainActivity.java(login Screen) package com.AndroidDevelopmentGuru.database_new; import java.util.List; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class MainActivity extends Activity {                                 EditText user, pass;                 Button login, not_reg;                 DatabaseHandler db;           ...

MainActivity.Java package com.example.nikk.nikkukaushik; import android.app.DatePickerDialog; import android.app.Dialog; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.DatePicker; import android.widget.EditText; import android.widget.ImageButton; import android.widget.Spinner; import android.widget.TextView; import android.widget.Toast; import java.util.Calendar; import java.util.List; public class MainActivity extends ActionBarActivity implements View.OnClickListener,AdapterView.OnItemSelectedListener{     MyDataHelper data1=new MyDataHelper(this);     int pos;     private ImageButton ib;     private Calendar cal; ...