Application Error - The connection to the server was unsuccessful. (file:///android_asset/www/index.html)
问题描述：
PhoneGap+Sencha Touch开发的应用，打包后的APP或者调试期间，在启动的时候提示如下信息：
Application Error - The connection to the server was unsuccessful.
(file:///android_asset/www/index.html)
问题分析：
这个应该是PhoneGap某些版本的BUG，尤其在index.html加载的内容较多时容易出现。
解决方法：
方法1：更新到PhoneGap的最新版本；
方法2：设置加载超时属性
super.setIntegerProperty("loadUrlTimeoutValue",10000);
完整代码如下（设置超时为 10 秒）
@Override
publicvoid onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
super.loadUrl("file:///android_asset/www/home/index.html");
super.setIntegerProperty("loadUrlTimeoutValue",10000);
}
方法3：改名法
把index.html更名为main.html，然后新建一个index.html页面，内容如下：
<!doctype html> <html> <head> <title>tittle</title> <script> window.location='./main.html'; </script> <body> </body> </html>
主要原理就是通过一个过渡页面，把加载首页的内容最小化。
找到项目中res/xml目录下的config.xml，把你的外网的域名地址添加到配置中
<access origin="http://example.com" /> <!--allow any secure requests to example.com -->
方法四：
index.html 里面https引用copy到本地,直接从本地引用,不通过http
<!--script src="https://cdn.rawgit.com/auth0/angular-storage/master/dist/angular-storage.js"></script-->
<script src="lib/angular-storage/dist/angular-storage.js"></script>
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