1.引言

.1     1.1目的

    不管是淘點點或者餓了麼，只要是打算做外賣的app，我覺得沒有實時地圖展示外賣訂單位置資訊是說不過去的，因為我覺得外賣對於物流實時性是非常苛刻的。11:00定的外賣在12:00還沒有送到使用者手中，都是不可原諒的。

   基於此我想設計一個地圖實時顯示送貨員位置資訊的系統。

  2.1 功能需求

    該系統主要功能包括：

    1).配送員app登入上線後，接收訂單後迴圈的把自己的位置資訊傳送給伺服器管理

    2).使用者客戶端在訂單經過店家轉給配送員後，即可在地圖上檢視實時位置資訊

    3)伺服器收到配送員位置資訊後根據配送訂單資訊轉發給相應的使用者客戶端

    4)其他功能。使用者app提交提單給web伺服器後，web伺服器把這條訊息推送給訂單追蹤伺服器

    3.1 業務流程設計

  4.1介面設計

     1)店家版

2)配送員

5)各個模組詳細設計和實現

5.1 使用者app請求地理位置

public class MyUdpClient extends UDPClientBase {

		public MyUdpClient(byte[] uuid, int appid, String serverAddr, int serverPort)
				throws Exception {
			super(uuid, appid, serverAddr, serverPort);

		}

		@Override
		public boolean hasNetworkConnection() {
			return Util.hasNetwork(OnlineService.this);
		}
		

		@Override
		public void trySystemSleep() {
			tryReleaseWakeLock();
		}

		@Override
		public void onPushMessage(Message message) {
			if(message == null){
				return;
			}
			else if(message.getData() == null || message.getData().length == 0){
				return;
			}
			else if(message.getCmd() == 16){// 0x10 通用推送資訊
				
			}
			else if(message.getCmd() == 17){// 0x11 分組推送資訊
				
			}
			else if(message.getCmd() == 32){// 0x20 自定義推送資訊
				String str = null;
				try{
					str = new String(message.getData(),5,message.getContentLength(), "UTF-8");
				}catch(Exception e){
					str = Util.convert(message.getData(),5,message.getContentLength());
				}
				
				//轉化成json串   lbs 實時物流追中，
				Gson gson = new Gson();
				MsgType msgType = gson.fromJson(str,new TypeToken<MsgType>(){}.getType()); 
				if(msgType.equals("wuliu"))
				{
					//配送員地址位置
					
				}
				else if(msgType.equals("order"))
				{
					//訂單確認
				}
				else
				{
					notifyUser(32,"自定義推送資訊",""+str,"收到自定義推送資訊");
				}		
			}
			setPkgsInfo();
		}

	}
 

百度地圖api版本v_3_1,百度定位api版本v_4.2

package com.cmyy.ui;

import org.json.JSONException;
import org.json.JSONObject;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;
import com.cmyy.R;
import com.cmyy.push.OnlineService;
import com.cmyy.push.Params;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;


//實時物流頁面
public class LogisticsTrackingActivity extends BaseActivity{
	private static final String LTAG = LogisticsTrackingActivity.class.getSimpleName();
	private MapView mMapView;
	private BaiduMap mBaiduMap;
	private SDKReceiver mReceiver;
	// 定位相關
	private LocationClient mLocClient;
	public MyLocationListenner myListener = new MyLocationListenner(); //定位
	boolean isFirstLoc = true;// 是否首次定位
	
	private PushLocationReceiver mPushLocationReceice;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		// 註冊 SDK 廣播監聽者
		IntentFilter iFilter = new IntentFilter();
		iFilter.addAction(SDKInitializer.SDK_BROADTCAST_ACTION_STRING_PERMISSION_CHECK_ERROR);
		iFilter.addAction(SDKInitializer.SDK_BROADCAST_ACTION_STRING_NETWORK_ERROR);
		mReceiver = new SDKReceiver();
		registerReceiver(mReceiver, iFilter);
		
		setContentView(R.layout.activity_tracking);
					
		//向伺服器通知需要物流地理位置了
		
		//註冊接受位置資訊廣播
		IntentFilter ipushFilter = new IntentFilter();
		ipushFilter.addAction("com.cmyy.ui.LogisticsTrackingActivity.PushLocationReceiver");
		mPushLocationReceice = new PushLocationReceiver();
		registerReceiver(mPushLocationReceice, ipushFilter);
		
		//啟動服務去接收位置	
		saveAccountInfo();
		Intent startSrv = new Intent(this, OnlineService.class);
		startSrv.putExtra("CMD", "RESET");
		startService(startSrv);
		//展示地圖
		mMapView = (MapView) findViewById(R.id.bmapView);
		mBaiduMap = mMapView.getMap();
		// 開啟定點陣圖層
		mBaiduMap.setMyLocationEnabled(true);
		// 定位初始化
		/*mLocClient = new LocationClient(this);
		mLocClient.registerLocationListener(myListener);
		LocationClientOption option = new LocationClientOption();
		option.setOpenGps(true);// 開啟gps
		option.setCoorType("bd09ll"); // 設定座標型別
		option.setScanSpan(1000);
		mLocClient.setLocOption(option);
		mLocClient.start();*/
	}
	
	public class PushLocationReceiver extends BroadcastReceiver {

		public PushLocationReceiver() {

		}

		@Override
		public void onReceive(Context context, Intent intent) {
             //接收到配送員傳送過來的位置資訊
			String message = intent.getStringExtra("data");
			Log.i("receive",message);
			Gson gson = new Gson();
			MyLocationData locData = gson.fromJson(message,new TypeToken<MyLocationData>(){}.getType());
	        JSONObject jsonObj;
	        double latitude = 39.915;
	        double longitude = 116.404;
			try {
				jsonObj = new JSONObject(message);
				latitude = jsonObj.getDouble("latitude");
				longitude= jsonObj.getDouble("longitude");
			} catch (JSONException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			Log.i("receive",String.valueOf(latitude));
			Log.i("receive",String.valueOf(longitude));
			mBaiduMap.setMyLocationData(locData);
			if (isFirstLoc) {
				isFirstLoc = false;
				LatLng ll = new LatLng(latitude,
						longitude);
				MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll);
				mBaiduMap.animateMapStatus(u);
			}
		}

	}
	
	/**
	 * 定位SDK監聽函式
	 */
	public class MyLocationListenner implements BDLocationListener {

		@Override
		public void onReceiveLocation(BDLocation location) {
			// map view 銷燬後不在處理新接收的位置
			if (location == null || mMapView == null)
				return;
			MyLocationData locData = new MyLocationData.Builder()
					.accuracy(location.getRadius())
					// 此處設定開發者獲取到的方向資訊，順時針0-360
					.direction(100).latitude(location.getLatitude())
					.longitude(location.getLongitude()).build();
			mBaiduMap.setMyLocationData(locData);
			if (isFirstLoc) {
				isFirstLoc = false;
				LatLng ll = new LatLng(location.getLatitude(),
						location.getLongitude());
				MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll);
				mBaiduMap.animateMapStatus(u);
			}
		}

		public void onReceivePoi(BDLocation poiLocation) {
		}
	}
	
	/**
	 * 構造廣播監聽類，監聽 SDK key 驗證以及網路異常廣播
	 */
	public class SDKReceiver extends BroadcastReceiver {
		public void onReceive(Context context, Intent intent) {
			String s = intent.getAction();
			Log.d(LTAG, "action: " + s);
			if (s.equals(SDKInitializer.SDK_BROADTCAST_ACTION_STRING_PERMISSION_CHECK_ERROR)) {
				Log.e("LogisticsTrackingActivity","key 驗證出錯! 請在 AndroidManifest.xml 檔案中檢查 key 設定");
			} else if (s.equals(SDKInitializer.SDK_BROADCAST_ACTION_STRING_NETWORK_ERROR)) {
				Log.e("LogisticsTrackingActivity","網路出錯");
			}
		}
	}
	
	protected void saveAccountInfo(){
		SharedPreferences account = this.getSharedPreferences(Params.DEFAULT_PRE_NAME,Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = account.edit();
		editor.putString(Params.SERVER_IP, "192.168.88.130");
		editor.putString(Params.SERVER_PORT, "9966");
		editor.putString(Params.PUSH_PORT, "9998");
		editor.putString(Params.USER_NAME, "333");
		editor.putString(Params.SENT_PKGS, "0");
		editor.putString(Params.RECEIVE_PKGS, "0");
		editor.commit();	
	}
	
	@Override
	protected void onPause() {
		super.onPause();
		// activity 暫停時同時暫停地圖控制元件
		mMapView.onPause();
	}

	@Override
	protected void onResume() {
		super.onResume();
		// activity 恢復時同時恢復地圖控制元件
		mMapView.onResume();
	}

	@Override
	protected void onDestroy() {
		mLocClient.stop();
		// 關閉定點陣圖層
		mBaiduMap.setMyLocationEnabled(false);
		super.onDestroy();
		// 取消監聽 SDK 廣播
		unregisterReceiver(mReceiver);
		// activity 銷燬時同時銷燬地圖控制元件
		mMapView.onDestroy();
	}
	
}<strong>
</strong>
 

5.2 配送員app傳送地理位置資訊給追蹤伺服器

  //接受伺服器推送資訊
	    saveAccountInfo();   //設定伺服器ip 埠
	    Intent startSrv = new Intent(this, OnlineService.class);
		startService(startSrv);
		
	    push = new Push(this);
	    //啟動地理位置監控
	    mBaiduMapControl = new BaiduMapControl();
	    mBaiduMapControl.Location(getApplicationContext(),new BDLocationListener()
	    {
			@Override
			public void onReceiveLocation(BDLocation location) {
			   	MyLocationData locData = new MyLocationData.Builder()
				.accuracy(location.getRadius())
				// 此處設定開發者獲取到的方向資訊，順時針0-360
				.direction(100).latitude(location.getLatitude())
				.longitude(location.getLongitude()).build();
			   	 Gson gson = new Gson();
			   	 //地理位置資訊
			   	 String strLocation = gson.toJson(locData).toString();
			     Log.i("BaiduLocationApiDem",strLocation);
				//Receive Location 
				/*StringBuffer sb = new StringBuffer(256);
				sb.append("time : ");
				sb.append(location.getTime());             //定位時間
				sb.append("\nerror code : ");
				sb.append(location.getLocType());
				sb.append("\nlatitude : ");
				sb.append(location.getLatitude());       // 開發者獲取到的方向資訊，順時針0-360
				sb.append("\nlontitude : ");
				sb.append(location.getLongitude());
				sb.append("\nradius : ");
				sb.append(location.getRadius());            
				if (location.getLocType() == BDLocation.TypeGpsLocation){
					sb.append("\nspeed : ");
					sb.append(location.getSpeed());
					sb.append("\nsatellite : ");
					sb.append(location.getSatelliteNumber());
					sb.append("\ndirection : ");
					sb.append("\naddr : ");
					sb.append(location.getAddrStr());
					sb.append(location.getDirection());
				} else if (location.getLocType() == BDLocation.TypeNetWorkLocation){
					sb.append("\naddr : ");
					sb.append(location.getAddrStr());
					//運營商資訊
					sb.append("\noperationers : ");
					sb.append(location.getOperators());
				}
			   					   	
				Log.i("BaiduLocationApiDem", sb.toString());	*/
				//定位成功傳送給伺服器
				push.send0x20("333", strLocation);  
							
			}
 	
	    });  

未完....