<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    <EditText
        android:id="@+id/username"
        android:inputType="textEmailAddress"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="4dp"
        android:layout_marginBottom="4dp"
        android:hint="Username" />
    <EditText
        android:id="@+id/password"
        android:inputType="textPassword"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dp"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="4dp"
        android:layout_marginBottom="16dp"
        android:fontFamily="sans-serif"
        android:hint="Password"/>
</LinearLayout>

private View alertView;

LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
alertView = inflater.inflate(R.layout.custom_alert_layout, null);

builder.setView(alertView);

@Override
public void onClick(DialogInterface dialog, int which) {
EditText t_user = (EditText)alertView.findViewById(R.id.username);
EditText t_pass = (EditText)alertView.findViewById(R.id.password);
String username = t_user.getText().toString();
String password = t_pass.getText().toString();
Toast toast = Toast.makeText(getApplicationContext(), "User: " + username + ", Pass: " + password, Toast.LENGTH_SHORT);
toast.show();
}

package com.kircode.codeforfood_test;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity{

private AlertDialog myDialog;
private View alertView;

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

Button button = (Button)findViewById(R.id.testButton);

AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
alertView = inflater.inflate(R.layout.custom_alert_layout, null);
builder.setView(alertView);

builder.setTitle("Log in");
builder.setIcon(R.drawable.snowflake);

builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
EditText t_user = (EditText)alertView.findViewById(R.id.username);
EditText t_pass = (EditText)alertView.findViewById(R.id.password);
String username = t_user.getText().toString();
String password = t_pass.getText().toString();
Toast toast = Toast.makeText(getApplicationContext(), "User: " + username + ", Pass: " + password, Toast.LENGTH_SHORT);
toast.show();
}
});

builder.setCancelable(false);
myDialog = builder.create();

button.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
myDialog.show();
}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}

}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/textHint" 
        android:textSize="24sp"/>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">Code For Food Test</string>
    <string name="textHint">Enter your message here!</string>
    <string name="menu_settings">Settings</string>

</resources>

list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
cursor.moveToPosition(position);
call(cursor.getString(2));
}
});

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

ListView list = (ListView)findViewById(R.id.contactList);
list.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
dialogEdit(position, id);
return true;
}
});

list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
cursor.moveToPosition(position);
call(cursor.getString(2));
}
});

updateList();
}

public void call(String phone){
        Intent callIntent = new Intent(Intent.ACTION_CALL);
        callIntent.setData(Uri.parse("tel:"+phone));
        startActivity(callIntent);
}

<uses-permission android:name="android.permission.CALL_PHONE"/>

private AlertDialog deleteDialog;

builder.setNegativeButton("Delete", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
deleteConfirm((int)id);
}
});

public void dialogEdit(final int position, final long id){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
alertView = inflater.inflate(R.layout.add_window, null);
builder.setView(alertView);

builder.setTitle("Edit contact");

builder.setPositiveButton("Save", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
EditText t_name = (EditText)alertView.findViewById(R.id.inp_name);
EditText t_phone = (EditText)alertView.findViewById(R.id.inp_phone);
String new_name = t_name.getText().toString();
String new_phone = t_phone.getText().toString();
ContentValues values = new ContentValues();
values.put(myDbHelper.NAME, new_name);
values.put(myDbHelper.PHONE, new_phone);
getContentResolver().update(CONTENT_URI, values, myDbHelper._ID+"="+id, null);
updateList();
}
});

builder.setNegativeButton("Delete", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
deleteConfirm((int)id);
}
});

builder.setCancelable(true);

EditText t_name = (EditText)alertView.findViewById(R.id.inp_name);
EditText t_phone = (EditText)alertView.findViewById(R.id.inp_phone);
cursor.moveToPosition(position);
t_name.setText(cursor.getString(1));
t_phone.setText(cursor.getString(2));

editDialog = builder.create();
editDialog.show();
}

public void deleteConfirm(final int id){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

builder.setTitle("Delete contact?");
builder.setMessage("Are you sure you want to delete this contact?");

builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
getContentResolver().delete(CONTENT_URI, myDbHelper._ID+"="+id, null);
updateList();
}
});

builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
}
});

builder.setCancelable(true);

deleteDialog = builder.create();
deleteDialog.show();
}

package com.kircode.codeforfood_test;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;

public class MainActivity extends Activity{

private static final Uri CONTENT_URI = Uri.parse("content://com.kircode.codeforfood_test.mycontentprovider/contacts");
private static final int IDM_ADD = 101;

private AlertDialog addDialog;
private AlertDialog deleteDialog;
private AlertDialog editDialog;
private View alertView;
private Cursor cursor;

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

ListView list = (ListView)findViewById(R.id.contactList);
list.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
dialogEdit(position, id);
return true;
}
});

list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
cursor.moveToPosition(position);
call(cursor.getString(2));
}
});

updateList();
}

@Override
public boolean onCreateOptionsMenu(Menu menu){
menu.add(Menu.NONE, IDM_ADD, Menu.NONE, "Add");
return(super.onCreateOptionsMenu(menu));
}

@Override
public boolean onOptionsItemSelected(MenuItem item){
switch(item.getItemId()){
case IDM_ADD:
dialogAdd();
break;
}
return(super.onOptionsItemSelected(item));
}

public void call(String phone){
        Intent callIntent = new Intent(Intent.ACTION_CALL);
        callIntent.setData(Uri.parse("tel:"+phone));
        startActivity(callIntent);
}

public void dialogAdd(){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
alertView = inflater.inflate(R.layout.add_window, null);
builder.setView(alertView);

builder.setTitle("Add contact");

builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
EditText t_name = (EditText)alertView.findViewById(R.id.inp_name);
EditText t_phone = (EditText)alertView.findViewById(R.id.inp_phone);
String new_name = t_name.getText().toString();
String new_phone = t_phone.getText().toString();
ContentValues values = new ContentValues();
values.put(myDbHelper.NAME, new_name);
values.put(myDbHelper.PHONE, new_phone);
getContentResolver().insert(CONTENT_URI, values);
updateList();
}
});

builder.setCancelable(true);
addDialog = builder.create();

addDialog.show();
}

public void dialogEdit(final int position, final long id){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
alertView = inflater.inflate(R.layout.add_window, null);
builder.setView(alertView);

builder.setTitle("Edit contact");

builder.setPositiveButton("Save", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
EditText t_name = (EditText)alertView.findViewById(R.id.inp_name);
EditText t_phone = (EditText)alertView.findViewById(R.id.inp_phone);
String new_name = t_name.getText().toString();
String new_phone = t_phone.getText().toString();
ContentValues values = new ContentValues();
values.put(myDbHelper.NAME, new_name);
values.put(myDbHelper.PHONE, new_phone);
getContentResolver().update(CONTENT_URI, values, myDbHelper._ID+"="+id, null);
updateList();
}
});

builder.setNegativeButton("Delete", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
deleteConfirm((int)id);
}
});

builder.setCancelable(true);

EditText t_name = (EditText)alertView.findViewById(R.id.inp_name);
EditText t_phone = (EditText)alertView.findViewById(R.id.inp_phone);
cursor.moveToPosition(position);
t_name.setText(cursor.getString(1));
t_phone.setText(cursor.getString(2));

editDialog = builder.create();
editDialog.show();
}

public void deleteConfirm(final int id){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

builder.setTitle("Delete contact?");
builder.setMessage("Are you sure you want to delete this contact?");

builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
getContentResolver().delete(CONTENT_URI, myDbHelper._ID+"="+id, null);
updateList();
}
});

builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
}
});

builder.setCancelable(true);

deleteDialog = builder.create();
deleteDialog.show();
}

public void updateList(){
String[] columns = new String[] {myDbHelper._ID, myDbHelper.NAME, myDbHelper.PHONE};
ContentResolver resolver = getContentResolver();
cursor = resolver.query(CONTENT_URI, columns, null, null, null);

final ListAdapter adapter = new SimpleCursorAdapter(this, R.layout.customrow, cursor, new String[] {myDbHelper.NAME, myDbHelper.PHONE}, new int[] {R.id.t_name, R.id.t_phone}, 0);
ListView list = (ListView)findViewById(R.id.contactList);
list.setAdapter(adapter);
}

}