勉強会force#2 HTML5によるモバイルアプリ開発

勉強会force#2
HTML5によるモバイルアプリ開発

ISV Architect 中嶋一樹

Safe Harbor
Safe harbor statement under the Private Securities Litigation Reform Act of 1995:

This presentation may contain forward-looking statements that involve risks, uncertainties, and assumptions. If any such
uncertainties materialize or if any of the assumptions proves incorrect, the results of salesforce.com, inc. could differ
materially from the results expressed or implied by the forward-looking statements we make. All statements other than
statements of historical fact could be deemed forward-looking, including any projections of product or service availability,
subscriber growth, earnings, revenues, or other financial items and any statements regarding strategies or plans of
management for future operations, statements of belief, any statements concerning new, planned, or upgraded services or
technology developments and customer contracts or use of our services.

The risks and uncertainties referred to above include – but are not limited to – risks associated with developing and
delivering new functionality for our service, new products and services, our new business model, our past operating losses,
possible fluctuations in our operating results and rate of growth, interruptions or delays in our Web hosting, breach of our
security measures, the outcome of intellectual property and other litigation, risks associated with possible mergers and
acquisitions, the immature market in which we operate, our relatively limited operating history, our ability to expand, retain,
and motivate our employees and manage our growth, new releases of our service and successful customer deployment, our
limited history reselling non-salesforce.com products, and utilization and selling to larger enterprise customers. Further
information on potential factors that could affect the financial results of salesforce.com, inc. is included in our annual report
on Form 10-Q for the most recent fiscal quarter ended April 30, 2011. This documents and others containing important
disclosures are available on the SEC Filings section of the Investor Information section of our Web site.

Any unreleased services or features referenced in this or other presentations, press releases or public statements are not
currently available and may not be delivered on time or at all. Customers who purchase our services should make the
purchase decisions based upon features that are currently available. Salesforce.com, inc. assumes no obligation and does
not intend to update these forward-looking statements.

3タイプのアプリケーション

Native
• オンラインストアからインストール
• モバイル端末のH/W機能を活用
• リッチなユーザエクスペリエンス
• 特殊な開発能力が必要


Web
• ブラウザからアクセス
• 端末を問わないシングルコードベース
• 限定的なH/Wアクセス
• 非互換なイベント
• 開発者を確保し易いWebベースの開発


Web + HTML5
• ブラウザからアクセス
• 端末を問わないシングルコードベース
• 限定的なH/Wアクセス
• Nativeのようなモバイル用UI


Hybrid
• オンラインストアからインストール
• モバイル端末のH/Wを活用
• リッチなユーザエクスペリエンス

Force.comでのWeb + HTML5アプリ提供形態

Database

Apex

Visualforce js / css

Force.com 3rd Party

HTML5

Database.comでのWeb + HTML5アプリ提供形態

Database
Apex
API

Open Web Platform js / css

Database.com 3rd Party

HTML5

User: mobile@sugoisurvey21.dev

Password: force0202

Visualforce PageにjQuery Mobileをロード
<apex:page sidebar="false" showHeader="false" standardStylesheets="false"
standardController="Session__c" extensions="sugoiSurvey" contentType="text/html" doctype="HTML-5.0">
<apex:stylesheet value="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.css" />
<apex:includescript value="http://code.jquery.com/jquery-1.7.1.min.js" />
<apex:includescript value="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js" />
<head>
<title>{!$label.sugoiSurvey}</title>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script type="text/javascript">
j$ = jQuery.noConflict();
</script>

• <apex:stylesheet>,<apex:includescript>でライブラリ(jQuery, jQuery Mobile)をロード
• <meta name="viewport">で表示サイズをモバイル端末画面に最適化
• jQuery.noConﬁlict();で$を変更

jQuery Mobileでのページ構造
<div id="session_list" data-role="page">
<div data-role="header">
</div>
<div data-role="content">
<a href="#session_detail">Session 1</a>
</div>
<div data-role="footer">
</div>
</div>

<div id="session_detail" data-role="page" data-add-back-btn="true">
</div>
</div>
<div data-role="footer">
</div>
</div>

• <div data-role="page">で1つの画面を表示
• 1htmlファイルに複数の画面を記述可能。デフォルトでは最初のpageを表示。
• ページ内リンク<a href="#{ID}">にて画面遷移。各<div>にid="{ID}"を設定しておく
• data-add-back-btn="true"でヘッダにbackボタンを自動表示可能

リスト
<div id="session_list" data-role="page" >
<div data-role="header"><h1>セッションリスト</h1></div>
<ul data-role="listview" data-inset="true" data-filter="true">
<li><a href="#session1">Session 1</a></li>
</ul>
</div>
</div>
<div id="session1" data-role="page" data-add-back-btn="true">
<div data-role="header"><h1>セッション詳細</h1></div>
<ul data-role="listview">
<li data-role="list-divider">Session 1</li>
<li>セッション 1の詳細</li>
</ul>
</div>
</div>

• <ul data-role=”listview”>でTouchに適したリストを表示
• <ul data-ﬁlter=”true”>でリスト絞り込み用サーチボックスを表示
• <li data-role=”list-divider”>でリストの見出を設定

サンプルアプリのトップページ
<div id="session_list" data-role="page" data-theme="d">
<h1>{!$label.sessionList}</h1>
<a href="#create_session" class="ui-btn-right" data-icon="plus" data-transition="slideup">{!$label.new}</a>
</div>
<ul data-role="listview" data-inset="true" data-divider-theme="d" data-filter="true" data-split-icon="gear">
<apex:repeat var="session" value="{!sessions}">
<li class="session">
<a href="/apex/sugoiSurveyM_detail?id={!session.id}" data-ajax="false">
<h3>{!session.name}</h3>
<p>
{!session.presenter__r.company__c} {!session.presenter__r.title__c} {!
session.presenter__r.name}<br />
{!YEAR(session.Date__c)}.{!MONTH(session.Date__c)}.{!DAY(session.Date__c)} #{!
session.hash_tag__c}
</p>
<span class="ui-li-count">{!session.rate_avg__c}pt</span>
</a>
<a href="/apex/sugoiSurveyM_edit?id={!session.id}" data-ajax="false"></a>
</li>
</apex:repeat>
</ul>
</div>
</div>

JavaScript RemotingでApexを実行
Apex
@RemoteAction
public static void submitSurveyJs(id session, string rate){
survey__c survey = new survey__c(session__c = session, rate__c = rate);
insert survey;
}

• @RemoteActionアノテーションを対応Methodに付加
• global/publicかつstaticのMethodを定義
Visulaforce Page
j$('#submit_survey').tap(function(){
var rate = j$('input:radio:checked').val();
sugoiSurvey.submitSurveyJs(
"{!session__c.id}",
rate,
function(result, event){
alert(event.message);
},
{escape:true}
);
});

• sugoiSurvey.submitSurveyJs() => {Class名}.{Method名}()で対応するApexを実行
• resultでクラスからの返り値を参照
• eventでApexからの実行結果を参照

OAuth (PHP + REST)
OAuth Toolkit for PHPをドキュメントルートに設置
https://github.com/nkjm/Force.com-OAuth-Toolkit-for-PHP

認証下に置くphpファイルの先頭
<?php
session_start();
if (!isset($_SESSION['access_token']) || !isset($_SESSION['instance_url'])) {
$_SESSION['oauth_return'] = $_SERVER['PHP_SELF'] . '?' . htmlspecialchars(SID);
header( 'Location: /oauth/oauth.php?' . htmlspecialchars(SID));
}

• 認証されているセッションは常に$_SESSION[‘access_token’]にTokenを保持
• Tokenがなければ、
1.ローカルのOAuthライブラリにリダイレクト。
2.Salesforceの認証サーバにリダイレクトされ、認証 => 「コード」取得。
3.ローカルのOAuthライブラリにリダイレクト。SalesforceのTokenサーバからTokenを取得。
4.$_SESSION[‘access_token’]にTokenを保存し認証下のコンテンツにリダイレクト。

OAuth (PHP + REST)
Tokenを用いたREST APIアクセス
$query = ‘select name from session__c’;
$url = $_SESSION[‘instance_url’] . “/services/data/" . VERSION . "/query?q=" . urlencode($query);
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER, array("Authorization: OAuth “ . $_SESSION[‘access_token’]));
$json_response = curl_exec($curl);
$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
if ($status != 200) {
if ($status == 401){
$response = json_decode($json_response);
if ($response[0]->errorCode == 'INVALID_SESSION_ID') {
header( 'Location: oauth/oauth.php' );
}
}
$curl_error = curl_error($curl);
$curl_errno = curl_errno($curl);
die("Status Code: $status <br/>Response: $json_response <br/> Curl Error: $curl_error <br/>Curl Errno:
$curl_errno");
}
curl_close($curl);
$response = json_decode($json_response, true);
return($response);

OAuth (PHP + JavaScript + REST)
Force.com JavaScript REST API Toolkit
https://github.com/developerforce/Force.com-JavaScript-REST-Toolkit

forcetk.js

Force.com JavaScript REST API Toolkitをドキュメントルートに設置
[root@server]# ls ${DOCUMENT_ROOT}/
forcetk.js
proxy.php
index.php
oauth/

HTMLから読み込み
<!DOCTYPE html>
<html>
<head>
<title><?php echo LABEL_SUGOISURVEY; ?></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link href="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.min.js"></script>
<script type="text/javascript" src="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js"></script>
<script type="text/javascript" src="forcetk.js"></script>
</head>

POSTでレコードを作成
<script type=”text/javascript”>
$(document).ready(function(){
var $client_id = "[あなたのConsumer ID]";
var $proxy_url = "https://[あなたのWebサーバ]/proxy.php?mode=native";

// REST APIアクセスを抽象化するWrapperを初期化
var client = new forcetk.Client($client_id, null, $proxy_url);

// セッション情報をセット
client.setSessionToken('<?php echo $_SESSION["access_token"]; ?>', null, '<?php echo
$_SESSION["instance_url"]; ?>');

$('#account_form :button').click(function(){
var $account_name = $('#account_form :text').attr('value');

// createメソッドでAccountレコードを作成。第一引数はオブジェクト名。第二引数はフィールド。第三引数は成功時のコールバック。
第四引数はエラー時のコールバック。
client.create(
"Account",
{"Name":$account_name},
function(response){ alert('Success!'); },
function(jqXHR){ alert(jqXHR.responseText); }
);
});
});
</script>

勉強会force#2 HTML5によるモバイルアプリ開発

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