new GetPosTask("GetGroupPos.php").execute();//启动异步类，括号里面为php名称

public class GetPosTask extends AsyncTask<Void, Void, List<Info>> {//Info是自定义的类
		String url;
		public GetPosTask(String url){//获得php文件名
			this.url=url;
		}
		protected List<Info> doInBackground(Void... params) {//自动执行
			JSONObject jsonObject = null;
			//往php文件里面传参数
			List<BasicNameValuePair> list = new ArrayList<BasicNameValuePair>();
			list.add(new BasicNameValuePair("groupID", groupID));

			try {
				jsonObject = MyNetUtil.sendGetRequest(Constants.BASEURL + url,//启动
						list);
				if (jsonObject != null) {
					JSONArray jsonArray = jsonObject.getJSONArray("GroupPos");//json数组要与php文件里面的匹配
					for (int i = 0; i <= jsonArray.length(); i++) {
						JSONObject jsonObject1 = (JSONObject) jsonArray.get(i);
						String objectIcon = jsonObject1.getString("objectIcon");
						String objectID = jsonObject1.getString("objectID");
						String objectName = jsonObject1.getString("objectName");
						String objectAddress = jsonObject1
								.getString("objAddress");
						String objectCompany = jsonObject1
								.getString("objectCompany");
						double infoLat = jsonObject1.getDouble("infoLat");
						double infoLng = jsonObject1.getDouble("infoLng");

						info_all.add(new Info(R.drawable.a01, R.drawable.maker,
								objectID, objectName, objectAddress,
								objectCompany, infoLat, infoLng));
					}
				}

			} catch (Exception e) {
				e.printStackTrace();
			}

			return info_all;
		}
		
		@Override
		protected void onPostExecute(List<Info> result) {//接着上面执行完之后执行此部分,result是上面的返回值info_all
			super.onPostExecute(result);
			//下面写从云数据库得到数据后要进行的操作
			
		}
		
	}

Android连接百度云数据库demo