Extended proxy to resolve Android 3+ url param bug

gistfile1.js

/**
 * Android 3+ doesn't like url params 
 * for file:// ajax request, so let's remove them!
 */
Ext.define('MyApp.proxy.NoParamAjax', {
    
  extend: 'Ext.data.proxy.Ajax',
	
  alias: 'proxy.noparamajax',
  
  /**
   * Set config to remove auto params
   */
  config: {
    noCache: false,
    enablePagingParams: false,
  },
	
  /**
   * Copied from Ext.data.proxy.Ajax, modified to remove params
   */
  doRequest: function(operation, callback, scope) {
    var writer  = this.getWriter(),
        request = this.buildRequest(operation);

    request.setConfig({
      headers        : this.getHeaders(),
      timeout        : this.getTimeout(),
      method         : this.getMethod(request),
      callback       : this.createRequestCallback(request, operation, callback, scope),
      scope          : this
    });

    if (operation.getWithCredentials() || this.getWithCredentials()) {
      request.setWithCredentials(true);
    }

    request = writer.write(request);

    var requestCfg = request.getCurrentConfig();

    // remove all url params for Android 3+ compatibility
    requestCfg.params = {}; 

    Ext.Ajax.request(requestCfg);

    return request;
  },
    
});