正确使用JQuery-Mobile / Phonegap的方法?

时间:2012-06-08 08:45:49

标签: jquery jquery-mobile cordova

一起使用JQuery Mobile和Phonegap的正确方法(截止日期)是什么?

两个框架都需要在可以使用之前加载。在使用它们之前,我怎么能确定它们都已加载?

9 个答案:

答案 0 :(得分:173)

您可以使用JQuery的延迟功能。

var deviceReadyDeferred = $.Deferred();
var jqmReadyDeferred = $.Deferred();

document.addEventListener("deviceReady", deviceReady, false);

function deviceReady() {
  deviceReadyDeferred.resolve();
}

$(document).one("mobileinit", function () {
  jqmReadyDeferred.resolve();
});

$.when(deviceReadyDeferred, jqmReadyDeferred).then(doWhenBothFrameworksLoaded);

function doWhenBothFrameworksLoaded() {
  // TBD
}

答案 1 :(得分:17)

根据以上示例

,以下是对我有用的方法
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <meta name="format-detection" content="telephone=no" />
        <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />
        <link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
        <title>InforMEA</title>
    </head>
    <body>
        <script type="text/javascript" src="js/jquery-1.8.3.js"></script>
        <script type="text/javascript">
            var dd = $.Deferred();
            var jqd = $.Deferred();
            $.when(dd, jqd).done(doInit);

            $(document).bind('mobileinit', function () {
                jqd.resolve();
            });
        </script>
        <script type="text/javascript" src="js/jquery.mobile-1.2.0.js"></script>
        <script type="text/javascript" src="cordova-2.2.0.js"></script>
        <script type="text/javascript">
            document.addEventListener('deviceready', deviceReady, false);
            function deviceReady() {
                dd.resolve();
            }

            function doInit() {
                alert('Ready');
            }
        </script>
    </body>
</html>

答案 2 :(得分:7)

为了使用phonegap和jquery mobile,你需要像这样使用它

<head>
<title>Index Page</title>

<!-- Adding viewport -->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, user-scalable=no">

<!-- Adding jQuery scripts -->
<script type="text/javascript" src="jquery/jquery-1.7.1.min.js"></script>

<!-- Since jQuery Mobile relies on jQuery core's $.ajax() functionality,
 $.support.cors & $.mobile.allowCrossDomainPages must be set to true to tell
 $.ajax to load cross-domain pages. -->
<script type="text/javascript">
    $(document).bind("mobileinit", function() {
        $.support.cors = true;
        $.mobile.allowCrossDomainPages = true;
    });
</script>

<!-- Adding Phonegap scripts -->
<script type="text/javascript" charset="utf-8"
    src="cordova/cordova-1.8.0.js"></script>

<!-- Adding jQuery mobile scripts & CSS -->
<link rel="stylesheet" href="jquerymobile/jquery.mobile-1.1.0.min.css" />
<script type="text/javascript"
    src="jquerymobile/jquery.mobile-1.1.0.min.js"></script>

</head>
<script type="text/javascript">
    // Listener that will invoke the onDeviceReady() function as soon as phonegap has loaded properly
    document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
        navigator.splashscreen.hide();

        document.addEventListener("backbutton", onBackClickEvent, false); // Adding the back button listener    

    }
    </script>
<body>
<div data-role="page" id="something" data-ajax="false">
        <script type="text/javascript">
            $("#something").on("pageinit", function(e) {

            });

            $("#something").on("pageshow", function(e) {

            });

            $("#something").on("pagebeforeshow", function(e) {

            });
        </script>

        <div data-role="header">            
        </div>

        <div data-role="content">           
        </div>      
    </div>
</body>  

答案 3 :(得分:6)

正如许多人建议使用延迟是一个好的选择,只要你不关心devicereadymobileinit发生的顺序。但在我的情况下,我需要一些{{1首次加载应用程序时的事件pageshow和扩展名mobileinit / pageshow / etc事件都在pagebeforeshow完成之前触发,所以我无法绑定到他们正确使用延期他们。这种竞争条件不是一件好事。

我需要做的是确保在'deviceready'被解雇之后才发生'mobileinit'。因为deviceready在您加载JQM时会立即触发,所以我选择在mobileinit完成之后使用jQuery.getScript加载它。

deviceready

我隐藏正文的原因是,在加载jquery.mobile之前,此方法的副作用是原始HTML文档可见性的半秒。在这种情况下,隐藏它需要额外半秒的空白空间来查看无样式的文档。

答案 4 :(得分:2)

我认为没有必要使用延迟功能。 (对于较新版本的phonegap,这可能不是必需的吗?)我在index.html文件的头部有这个,一切正常。我认为包含jquery,phonegap和jquery mobile的顺序非常重要。

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />

    <!-- Adding jQuery -->
    <script type="text/javascript" src="js/jquery-1.9.1.min.js"></script>

    <!-- Add Phonegap scripts -->
    <script type="text/javascript" src="phonegap.js"></script>

    <!-- Add jQuery mobile -->
    <link rel="stylesheet" href="css/jquery.mobile-1.3.2.css" />
    <script type="text/javascript" src="js/jquery.mobile-1.3.2.min.js"></script>

    <title>MY TITLE</title>
</head>

答案 5 :(得分:1)

这对我有用。基于dhaval,当我学习使用sqlite

时这个示例
<!DOCTYPE html>
<html>
 <head>
<title>Cordova Sqlite+Jquery</title>
<script type="text/javascript" charset="utf-8" src="js/jquery-1.8.3.min.js"></script>   
<script type="text/javascript" charset="utf-8" src="cordova-2.2.0.js"></script>
<script type="text/javascript" charset="utf-8">`

// Call onDeviceReady when Cordova is loaded.
//
// At this point, the document has loaded but cordova-1.8.0.js has not.
// When Cordova is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
    document.addEventListener("deviceready", onDeviceReady, false);
}

// Populate the database 
//
function populateDB(tx) {
    tx.executeSql('DROP TABLE IF EXISTS DEMO');
    tx.executeSql('CREATE TABLE IF NOT EXISTS DEMO (id unique, data)');
    tx.executeSql('INSERT INTO DEMO (id, data) VALUES (1, "First row")');
    tx.executeSql('INSERT INTO DEMO (id, data) VALUES (2, "Second row")');
}

// Query the database
//
function queryDB(tx) {
    tx.executeSql('SELECT * FROM DEMO', [], querySuccess, errorCB);
}

// Query the success callback
//
function querySuccess(tx, results) {
    var len = results.rows.length;
    //console.log("DEMO table: " + len + " rows found.");
    $('#result').html("DEMO table: " + len + " rows found.");
    var listval = '';
    for (var i=0; i<len; i++){
        //console.log("Row = " + i + " ID = " + results.rows.item(i).id + " Data =  " + results.rows.item(i).data);
         listval += '<li>'+ results.rows.item(i).data + '[' + results.rows.item(i).id + '] </li>';
    }

    $('#listItem').html(listval);

}

// Transaction error callback
//
function errorCB(err) {
    console.log("Error processing SQL: "+err.code);
}

// Transaction success callback
//
function successCB() {
    var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
    db.transaction(queryDB, errorCB);
}

// Cordova is loaded and it is now safe to make calls Cordova methods
//
function onDeviceReady() {
    // Now safe to use the Cordova API
    //alert('ready');
    var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
    db.transaction(populateDB, errorCB, successCB);
    //$('#result').html('hello');
}

</script>
  </head>
 <body onload="onLoad()">
  <div>result:</div><div id="result"></div>
  <ul id="listItem">
  </ul>
 </body>
 </html>

答案 6 :(得分:0)

为了建立@ Jeffrey的答案,我找到了一种更清晰的方法来隐藏HTML标记,直到JQM完成处理页面并呈现第一个Page元素,因为我注意到之前1/2秒的裸标记闪烁JQM渲染。

你只需要用css隐藏所有标记...... JQM的PageShow()将切换你的可见性。

//snip
<style type="text/css">
.hide {
  display:none;
}
</style>

//snip - now the markup notice the hide class
<div id="page1" data-role="page" class="hide">
     //all your regular JQM / html form markup
</div>

//snip -- down to the end of /body
<script src="cordova-2.2.0.js"></script>
<script src="js/jquery-1.8.2.min.js"></script>
<script>
   document.addEventListener(
     'deviceready',
      function () {
         $(document).one("mobileinit", function () {
         //any JQM init methods

       });
      $.getScript('js/jquery.mobile-1.2.0.min.js');
   },
   false);
</script>

答案 7 :(得分:0)

以下为PG 2.3和JQM 1.2工作,包括。 Facebook Connect插件:

<head>
<script src="./js/jquery-1.8.2.min.js"></script>
<script>
    $.ajaxSetup({
        dataType : 'html'
    });

    var dd = $.Deferred();
    var jqd = $.Deferred();
    $.when(dd, jqd).done(function() {                

        FB.init({ appId: auth.fbId, nativeInterface: CDV.FB, useCachedDialogs: false });
    });

    $(document).bind('mobileinit', function () {
        jqd.resolve();
    });                        
</script>
<script src="./js/jquery.mobile-1.2.0.min.js"></script>
<script>
    $.mobile.loader.prototype.options.text = "loading";
    $.mobile.loader.prototype.options.textVisible = true;
    $.mobile.loader.prototype.options.theme = "a";
    $.mobile.loader.prototype.options.html = "";

    $.mobile.ajaxEnabled = false;
    $.mobile.allowCrossDomainPages = true;
    $.support.cors = true;       

    $('[data-role=page]').live('pagecreate', function(event) {                      
        tpl.renderReplace('login', {}, '#content-inner', function() {                   
            auth.init();
        });
    });
</script>
<script src="./js/cordova-2.3.0.js"></script>
<script src="./js/cdv-plugin-fb-connect.js"></script>
<script src="./js/facebook_js_sdk.js"></script>                     
<!--some more scripts -->
<script>        
    document.addEventListener('deviceready', function() {
        dd.resolve();
    }, false);                        
</script>  
<head>

答案 8 :(得分:-1)

加载PhoneGap与加载jQuery略有不同。 jQuery更像是一个实用程序库,所以你可以包含它,它可以立即使用。另一方面,PhoneGap需要本机代码支持才能进行正确的初始化,因此在页面中包含它后不能立即使用。

Phonegap建议注册并等待deviceready事件执行任何本机特定代码。

<!DOCTYPE html>
<html>
  <head>
    <title>PhoneGap Example</title>

    <script type="text/javascript" charset="utf-8" src="lib/jquery.min.js"></script>
    <script type="text/javascript">
        // jquery code here
    </script>
    <script type="text/javascript" charset="utf-8" src="lib/android/cordova-1.7.0.js"></script>
    <script type="text/javascript" charset="utf-8">

    function onLoad(){
        document.addEventListener("deviceready", onDeviceReady, false);
    }

    // Cordova is ready
    function onDeviceReady() {
        // write code related to phonegap here
    }
    </script>
  </head>
  <body onload="onLoad()">
    <h1>Phonegap Example</h1>
  </body>
</html>

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