phonegap 清空页面缓存

<meta HTTP-EQUIV="pragma" CONTENT="no-cache">
<meta HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<meta HTTP-EQUIV="expires" CONTENT="0">

    @Override
    public void onCreate(Bundle savedInstanceState) {
        
         super.onCreate(savedInstanceState);
         super.setBooleanProperty("loadInWebView", true);  
          super.setIntegerProperty("splashscreen", R.drawable.a);
          super.clearCache();
          ConnectivityManager cwjManager=(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
          NetworkInfo info = cwjManager.getActiveNetworkInfo();
        
          if (info != null && info.isAvailable()){
          super.loadUrl("http://192.168.55.175:5000",10000);
             // super.loadUrl("http://www.baidu.com",3000);
          }else{
          
         super.loadUrl("file:///android_asset/www/error.html",2000);
             // super.loadUrl("http://www.xxx.com",4500);
          }
    }