/// <summary>
		/// Sets the rest request parameters.
		/// </summary>
		/// <param name="registerInfoParam">Register info parameter.</param>
		private void SetRestRequestParams(HeadImgPostParam headImgPostParam)
		{
			if (!requestParams.ContainsKey ("key"))
				requestParams.Add ("key", headImgPostParam.Key);
			else
				requestParams ["key"] = headImgPostParam.Key;

			if (!requestParams.ContainsKey ("eguid"))
				requestParams.Add ("eguid", headImgPostParam.Euid);
			else
				requestParams ["eguid"] = headImgPostParam.Euid;

			if (!requestParams.ContainsKey ("eimgstr"))
				requestParams.Add ("eimgstr", headImgPostParam.EimageStr);
			else
				requestParams ["eimgstr"] = headImgPostParam.EimageStr;

			if (!requestParams.ContainsKey ("md5"))
				requestParams.Add ("md5", headImgPostParam.Md5);
			else
				requestParams ["md5"] = headImgPostParam.Md5;

		}
		private void SetPicToLocalAndServer(Bitmap mBitmap) 
		{

			var sdStatus = Android.OS.Environment.ExternalStorageState;
			//检测sd是否可用
			if (!sdStatus.Equals (Android.OS.Environment.MediaMounted)) {
				return;
			}
			System.IO.FileStream MyFileStream = null;

			Java.IO.File file = new Java.IO.File(path);
			if(!file.Exists())
				file.Mkdirs();// 创建文件夹
			string fileName = path + "myHead.jpg";
			try{
				MyFileStream = new System.IO.FileStream(fileName, System.IO.FileMode.OpenOrCreate);  
				//保存照片  
				mBitmap.Compress(Bitmap.CompressFormat.Jpeg, 100, MyFileStream); 

				byte[] buffer = new byte[MyFileStream.Length];
				// 设置当前流的位置为流的开始
				MyFileStream.Seek(0, SeekOrigin.Begin);
				MyFileStream.Read(buffer, 0, buffer.Length);


				var  headimgStr = Convert.ToBase64String(buffer);
				//调用restapi提交头像
				var headImgPostParam = new HeadImgPostParam () {
					UId = Global.MyInfo.UId,ImageStr = headimgStr
				};
				SetRestRequestParams (headImgPostParam);
				var restSharpRequestHelp = new RestSharpRequestHelp(headImgPostParam.Url,requestParams);
				restSharpRequestHelp.ExcuteAsync ((RestSharp.IRestResponse response) => {
					if(response.ResponseStatus == RestSharp.ResponseStatus.Completed && response.StatusCode == System.Net.HttpStatusCode.OK)
					{
						//获取并解析返回resultJson获取安全码结果值
						var result = response.Content;
						var headimgJson = JsonConvert.DeserializeObject<HeadImgJson>(result);
						if(headimgJson.statuscode == "1")
							Global.MyInfo.HeadImgUrl = headimgJson.data[0].HeadImgUrl;
						else
						{
							Activity.RunOnUiThread(()=>
								{
									Toast.MakeText(Activity,"头像上传失败",ToastLength.Short).Show();
								});
						}

					}
	
				});
			}
			catch(Java.IO.FileNotFoundException e) {
				e.PrintStackTrace ();
			}
			finally {
				MyFileStream.Flush ();
				MyFileStream.Close ();
			}	

		}