/** 隐藏刷新Loadding */
 public void hideLoadingDialog() {
   try {
     if (mLoadingDialog != null) {
       if (mLoadingDialog.animation != null) {
         mLoadingDialog.animation.reset();
       }
       mLoadingDialog.dismiss();
       mLoadingDialog = null;
     }
   } catch (Exception e) {
     e.printStackTrace();
   }
 }
 /** 显示刷新Loadding */
 public void showLoadingDialog() {
   try {
     mLoadingDialog = LoadingDialog.createDialog(this);
     mLoadingDialog.setTitle(null);
     mLoadingDialog.setCancelable(false);
     mLoadingDialog.setOnKeyListener(
         new DialogInterface.OnKeyListener() {
           @Override
           public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
             if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {
               hideLoadingDialog();
             }
             return true;
           }
         });
     if (!isFinishing()) {
       mLoadingDialog.show();
     }
   } catch (Exception e) {
     e.printStackTrace();
   }
 }