1

我正在使用以下博客作为代码库进行概念验证应用程序。

http://jaydata.org/blog/how-to-check-if-your-websql-environment-is-working

当我使用 XCode 4.6.1 在 iPad 6.1 Simulator 中运行以下命令时，我可以看到预期的输出。

[LOG] Received Event: deviceready
[LOG] begin testing
[LOG] define Department Entity
[LOG] define Employee Entity
[LOG] saving Entity done.

但是当我通过 USB 将以下内容运行到实际的 iPad 设备时，它的输出以“定义部门实体”结束。我没有看到任何错误；这是 console.log 输出：

[LOG] Received Event: deviceready
[LOG] begin testing
[LOG] define Department Entity

任何帮助将非常感激。

<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/index.css" />
<title>Hello World</title>

<!--jQuery-->
<script type="text/javascript" src="jquery/jquery-1.7.2.js"></script>
<script type="text/javascript" src="jquery/jquery.mobile-1.1.1.js"></script>

<!--jayData and the different providers used-->
<script type="text/javascript" src="js/JayData-1.2.7.1/JayData.js"></script>
<script type="text/javascript" src="js/JayData-1.2.7.1/jaydataproviders/SqLiteProvider.js"></script>

<!--PhoneGap-->
<script type="text/javascript" src="cordova-2.5.0.js"></script>
</head>
<body>
<div class="app">
    <h1>Apache Cordova</h1>
    <div id="deviceready" class="blink">
        <p class="event listening">Connecting to Device</p>
        <p class="event received">Device is Ready</p>
    </div>
</div>
<script type="text/javascript" src="cordova-2.5.0.js"></script>
<script type="text/javascript" src="js/index.js"></script>
<script type="text/javascript">
    app.initialize();
    </script>
<script type="text/javascript">
    var jqmReady = $.Deferred(),
        pgReady = $.Deferred();

    // mobileinit does not work. pageinit works.
    // jqm ready
    $(document).bind("pageinit", jqmReady.resolve);

    // phonegap ready
    document.addEventListener("deviceready", pgReady.resolve, false);

    // all ready :)
    $.when(jqmReady, pgReady).then(function () {
        console.log('begin testing');

console.log('define Department Entity');
$data.Entity.extend("$org.types.Department",
{
    Id: { type: "int", key: true, computed: true },
    Name: { type: "string", required: true },
    Employees: {
        type: Array,
        elementType: "$org.types.Employee",
        inverseProperty: "Department"
    }
});
console.log('define Employee Entity');
$data.Entity.extend("$org.types.Employee",
{
    Id: { type: "int", key: true, computed: true },
    Name: { type: "string", required: true },
    Department: { type: $org.types.Department, inverseProperty: 'Employees' }
});

$data.EntityContext.extend("$org.types.OrgContext", {
    Department: { type: $data.EntitySet, elementType: $org.types.Department },
    Employee: { type: $data.EntitySet, elementType: $org.types.Employee }
});

$org.context = new $org.types.OrgContext({
    name: "webSql", databaseName: "OrgDatabase",
    dbCreation: $data.storageProviders.DbCreationType.DropTableIfChanged
});

var department = new $org.types.Department({ Name: 'Department1' });
var employee = new $org.types.Employee({ Name: 'John Smith' });
department.Employees = [employee];

$org.context.onReady(function () {
    $org.context.Department.add(department);
    $org.context.saveChanges();
});

console.log('saving Entity done.');

    });
        </script>

</body>
</html>
4

2 回答 2

2

在 jaydata 论坛上回答，但我在这里复制，也许其他人会搜索这个

重点：1.使用jquery 1.8+，不支持1.7。如果您必须使用 1.7，那么请使用 q promise，如果您有任何问题，请告诉我们 2. 不幸的是，您只能在 onload 事件之后订阅 deviceready 事件....

此代码适用于我们的 ipad 6.1

(function main() {
var jqmReady = $.Deferred();
var pgReady = $.Deferred();

// mobileinit does not work. pageinit works.
// jqm ready
$(document).bind("pageinit", jqmReady.resolve);

// phonegap ready
$.when($.ready)
.then(function(){
    document.addEventListener("deviceready", pgReady.resolve, false);
});

var Employee = $data.define('Employee', {
   Id: { type: "int", key: true, computed: true },
   Name: { type: "string", required: true },
   Department: { type: "Department", inverseProperty: 'Employees' }
});

var Department = $data.define('Department', {
   Id: { type: "int", key: true, computed: true },
   Name: { type: "string", required: true },
   Employees: { type: Array, elementType: "Employee", inverseProperty: 'Department' }
});

var OrgDatabase = $data.EntityContext.extend('OrgDatabase', {
   Departments: { type: $data.EntitySet, elementType: Department },
   Employees: { type: $data.EntitySet, elementType: Employee }
});

var context = new OrgDatabase({name: 'webSql', databaseName: 'OrgDatabase', dbCreation: $data.storageProviders.DbCreationType.DropTableIfChanged});            

// all ready :)
$.when(jqmReady, pgReady, context.onReady()).then(function () {

   var employee = new Employee({ Name: 'John Smith' });
   var department = new Department({ Name: 'Department1' });
   department.Employees = [employee];

   context.Departments.add(department);
   context.saveChanges(function() {
      alert('saving Entity done.');
    });
});
})()
于 2013-03-19T12:03:16.557 回答
0

我使用 Web Inspector 发现 iPad 上的应用程序无法加载“JayData.js”。

事实证明，实际的 js 文件有一个全小写字符的文件名。因此，解决方法是将“JayData.js”更改为“jaydata.js”，该应用程序可以在 iPad 上运行。

http://developer.apple.com/library/ios/#documentation/AppleApplications/Reference/SafariWebContent/DebuggingSafarioniPhoneContent/DebuggingSafarioniPhoneContent.html

于 2013-03-19T18:13:47.337 回答