Android Open Source - Fall_Prevention_2013 New Contact

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License

The source code is released under:

Apache License

Java Source Code

/*******************************************************************************
 * Licensed to UbiCollab.org under one or more contributor
 * license agreements.  See the NOTICE file distributed 
 * with this work for additional information regarding
 * copyright ownership. UbiCollab.org licenses this file
 * to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * /*from w w  w . j  a  v  a 2 s. co m*/
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 ******************************************************************************/
package ntnu.stud.valens.demonstration.activity;

import java.util.ArrayList;
import java.util.List;
import ntnu.stud.valens.demonstration.R;
import ntnu.stud.valens.demonstration.connectivity.DatabaseHelper;
import ntnu.stud.valens.demonstration.datastructures.Contact;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

/**
 * Handles the screen for getting contacts from the phone contact list. 
 * 
 * @author Elias
 */
public class NewContact extends Activity {

  ListView contactList;
  List<Contact> contacts;

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

    // Get handles for UI objects
    contactList = (ListView) findViewById(android.R.id.list);

    // Add event listeners
    contactList.setOnItemClickListener(new OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> arg0, View arg1,
          int position, long arg3) {
        fireClick(position);
      }
    });

    populateContactList();
  }

  /**
   * Handles click events
   * 
   * @param position
   *            position for detection the position to display
   */
  public void fireClick(int position) {
    final int _id = contacts.get(position).getId();
    AlertDialog.Builder alert_box = new AlertDialog.Builder(this);
    String message = getResources().getString(
        R.string.add_contact_confirm_dialogue_text_1)
        + " "
        + contacts.get(position).getName()
        + " "
        + getResources().getString(
            R.string.add_contact_confirm_dialogue_text_2);
    alert_box.setMessage(message);
    alert_box.setPositiveButton(R.string.GENERAL_positive,
        new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            String contactName = new DatabaseHelper(
                getApplicationContext()).dbAddContact(Integer
                .toString(_id));
            String prefix = getResources().getString(
                R.string.contact_added);
            Toast.makeText(NewContact.this,
                prefix + " " + contactName, Toast.LENGTH_SHORT)
                .show();
          }
        });
    alert_box.setNegativeButton(R.string.GENERAL_negative,
        new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            // Pass
          }
        });
    alert_box.show();
  }

  /**
   * Makes a structured contact list
   */
  public void populateContactList() {
    getContacts();

    ArrayList<String> contactNames = new ArrayList<String>();

    for (Contact c : contacts) {
      contactNames.add(c.getName());
    }
    final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
        android.R.layout.simple_list_item_1, contactNames);
    contactList.setAdapter(adapter);
  }

  /**
   * Fetches the contacts from the phone database.
   */
  public void getContacts() {
    // Run query
    Uri uri = ContactsContract.Contacts.CONTENT_URI;
    String[] projection = new String[] { ContactsContract.Contacts._ID,
        ContactsContract.Contacts.DISPLAY_NAME };
    // Only care about contacts with a phone number
    String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = 1";
    String[] selectionArgs = null;

    String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
        + " COLLATE LOCALIZED ASC";

    Cursor cursor = getContentResolver().query(uri, projection, selection,
        selectionArgs, sortOrder);
    // Iterate over cursor to extract the contacts
    contacts = new ArrayList<Contact>();

    for (int i = 0; i < cursor.getCount(); i++) {
      cursor.moveToPosition(i);
      String name = cursor.getString(1);
      int id = cursor.getInt(0);
      contacts.add(new Contact(name, id));
    }
  }

  /**
   * its a method for a button that sends you to the CreateContact screen
   * 
   * @param view
   */
  public void createContact(View view) {
    Intent intent = new Intent(this, CreateContact.class);
    startActivity(intent);
  }
}

Java Source Code List

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