ReferenceError:未定义Firebase

我试图将Firebase连接到我的android应用程序。我使用了Onsen UI framwork。我在运行应用程序时出错

这是我的错误日志->

05-22 09:31:30.071      763-763/io.cordova.hellocordova E/Web Console﹕ ReferenceError: Firebase is not defined
        at new <anonymous> (file:///android_asset/www/js/app.js:6:27)
        at invoke (file:///android_asset/www/lib/onsen/js/angular/angular.js:3708:17)
        at Object.instantiate (file:///android_asset/www/lib/onsen/js/angular/angular.js:3719:23)
        at file:///android_asset/www/lib/onsen/js/angular/angular.js:6770:28
        at file:///android_asset/www/lib/onsen/js/angular/angular.js:6183:34
        at forEach (file:///android_asset/www/lib/onsen/js/angular/angular.js:310:20)
        at nodeLinkFn (file:///android_asset/www/lib/onsen/js/angular/angular.js:6170:11)
        at compositeLinkFn (file:///android_asset/www/lib/onsen/js/angular/angular.js:5634:15)
        at compositeLinkFn (file:///android_asset/www/lib/onsen/js/angular/angular.js:5637:13)
        at publicLinkFn (file:///android_asset/www/lib/onsen/js/angular/angular.js:5539:30) at file:///android_asset/www/lib/onsen/js/angular/angular.js:9400

我在index.html中添加了以下行->

<script src="lib/onsen/js/angular/angular.js"></script>                                                                   
<script src="lib/onsen/js/onsenui.js"></script>                                                                           
<script type='text/javascript' src='https://cdn.firebase.com/js/client/1.0.17/firebase.js'></script>                      
<script type='text/javascript' src='https://cdn.firebase.com/js/simple-login/1.6.1/firebase-simple-login.js'></script>

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app.js中显示的代码永远不会运行。我不认为这提供了一个准确的答案。这可能是订购问题。firebase库的include可能是在您的app.js被调用之后，但在这里也看不到。

<script src="lib/onsen/js/angular/angular.js"></script>                                                                   
<script src="lib/onsen/js/onsenui.js"></script>                                                                           
<script type='text/javascript' src='https://cdn.firebase.com/js/client/1.0.17/firebase.js'></script>                      
<script type='text/javascript' src='https://cdn.firebase.com/js/simple-login/1.6.1/firebase-simple-login.js'></script>