騰訊位置服務GPS軌跡回放-安卓篇

時間 2021-06-04

標籤 java android git segmentfault 數組多線程架構 app 異步 ide 欄目騰訊简体版

原文原文鏈接

前言

當咱們使用地圖進行開發時，利用已經錄製好的軌跡進行軌跡回放來檢查導航的準確性是十分經常使用的手段，而且上一篇已經講完了關於地圖使用時GPS軌跡文件的錄製，如今對於安卓系統下使用騰訊導航SDK進行軌跡回放作一個分享java

前期準備

騰訊導航SDK依賴於騰訊地圖SDK、騰訊定位SDK，具體權限的開通須要去lbs.qq.com 的官網控制檯去操做,另外導航SDK的權限能夠聯繫小助手諮詢（以下圖所示），這裏就很少作探討android

軌跡回放正片

系統架構

GPS回放系統分紅兩部分：GPSPlaybackActivity 和 GPSPlaybackEngine。
GPSPlayback負責和外界的交互，主要是信息的傳遞和導航SDK的交互，而GPSPlaybackEngine負責具體的讀取文件和將定位點經過多線程runnable機制灌入listener。git

開始軌跡回放

BaseNaviActivity.java

baseNaviActivity 主要是對於導航SDK naviView部分的生命週期的管理，必須實現，不然不能進行導航！segmentfault

/**
 * 導航 SDK {@link CarNaviView} 初始化與週期管理類。
 */
public abstract class BaseNaviActivity {

    private static Context mApplicationContext;

    protected CarNaviView mCarNaviView;

    // 創建了TencentCarNaviManager 單例模式，也能夠直接調用TencentCarNaviManager來創建本身的carNaviManager
    public static final Singleton<TencentCarNaviManager> mCarManagerSingleton =
            new Singleton<TencentCarNaviManager>() {
                @Override
                protected TencentCarNaviManager create() {
                    return new TencentCarNaviManager(mApplicationContext);
                }
            };

    public static TencentCarNaviManager getCarNaviManager(Context appContext) {
        mApplicationContext = appContext;
        return mCarManagerSingleton.get();
    }

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(getLayoutID());
        super.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        mApplicationContext = getApplicationContext();
        mCarNaviView = findViewById(R.id.tnk_car_navi_view);
        mCarManagerSingleton.get().addNaviView(mCarNaviView);
    }

    public int getLayoutID() {
        return R.layout.tnk_activity_navi_base;
    }

    protected View getCarNaviViewChaild() {
        final int count = mCarNaviView.getChildCount();
        if (0 >= count) {
            return mCarNaviView;
        }
        return mCarNaviView.getChildAt(count - 1);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (!isDestoryMap()) {
            return;
        }
        mCarManagerSingleton.get().removeAllNaviViews();
        if (mCarNaviView != null) {
            mCarNaviView.onDestroy();
        }
//        mCarManagerSingleton.destory();
    }

    @Override
    protected void onStart() {
        super.onStart();
        if (mCarNaviView != null) {
            mCarNaviView.onStart();
        }
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        if (mCarNaviView != null) {
            mCarNaviView.onRestart();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (mCarNaviView != null) {
            mCarNaviView.onResume();
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (mCarNaviView != null) {
            mCarNaviView.onPause();
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        if (mCarNaviView != null) {
            mCarNaviView.onStop();
        }
    }

    protected boolean isDestoryMap() {
        return true;
    }
}

GPSPlaybackActivity.java

這一部分主要是對於導航 SDK的交互和添加導航UI部分初始化工做。注意導航sdk必定要先算路，再開始導航。算路能夠取得GPS文件的首行爲起點，末行爲終點。數組

用到的fields多線程

private static final String LOG_TAG = "[GpsPlayback]";

    // gps 文件路徑
    private String mGpsTrackPath;
    // gps 軌跡的起終點
    private NaviPoi mFrom, mTo;

    // 是不是84座標系
    private boolean isLocation84 = true;

由於在GPSPlaybackEngine已經進行了listener監聽，因此須要對於導航SDK進行灌點架構

// 騰訊定位sdk的listener
    private TencentLocationListener listener = new TencentLocationListener() {
        @Override
        public void onLocationChanged(TencentLocation tencentLocation, int error, String reason) {
            if (error != TencentLocation.ERROR_OK || tencentLocation == null) {
                return;
            }
            Log.d(LOG_TAG, "onLocationChanged : "
                    + ", latitude" + tencentLocation.getLatitude()
                    + ", longitude: " + tencentLocation.getLongitude()
                    + ", provider: " + tencentLocation.getProvider()
                    + ", accuracy: " + tencentLocation.getAccuracy());

            // 將定位點灌入導航SDK
            // mCarManagerSingleton是使用導航SDK的carNaviManager建立的單例，開發者能夠本身實現
            mCarManagerSingleton.get().updateLocation(ConvertHelper
                    .convertToGpsLocation(tencentLocation), error, reason);
        }

        @Override
        public void onStatusUpdate(String provider, int status, String description) {
            Log.d(LOG_TAG, "onStatusUpdate provider: " + provider
                    + ", status: " + status
                    + ", desc: " + description);

            // 更新GPS狀態.
            mCarManagerSingleton.get().updateGpsStatus(provider, status, description);
        }
    };

onCreate方法初始化UI和添加callbackapp

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // 獲取GPS文件軌跡路徑，這裏能夠由開發者本身獲取
        mGpsTrackPath = getIntent().getStringExtra("gpsTrackPath");
        if (mGpsTrackPath == null || mGpsTrackPath.isEmpty()) {
            return;
        }

        initUi();
        addTencentCallback();

        new Handler().post(() -> {
        
            // 目的獲取每條軌跡的arraylist
            ArrayList<String> gpsLineStrs = readGpsFile(mGpsTrackPath);
            if (gpsLineStrs == null || gpsLineStrs.isEmpty()) {
                return;
            }
            // 獲取起終點
            getFromAndTo(gpsLineStrs);
            if (mFrom == null || mTo == null) {
                return;
            }
            final Handler handlerUi = new Handler(Looper.getMainLooper());
            handlerUi.post(() -> searchAndStartNavigation());
        });

    }
    

private void initUi() {
        mCarManagerSingleton.get().setInternalTtsEnabled(true);

        final int margin = CommonUtils.dip2px(this, 36);
        // 全覽模式的路線邊距
        mCarNaviView.setVisibleRegionMargin(margin, margin, margin, margin);
        mCarNaviView.setAutoScaleEnabled(true);
        mCarManagerSingleton.get().setMulteRoutes(true);
        mCarNaviView.setNaviMapActionCallback(mCarManagerSingleton.get());

        // 使用默認UI
        CarNaviInfoPanel carNaviInfoPanel = mCarNaviView.showNaviInfoPanel();
        carNaviInfoPanel.setOnNaviInfoListener(() -> {
            mCarManagerSingleton.get().stopNavi();
            finish();
        });
        CarNaviInfoPanel.NaviInfoPanelConfig config = new CarNaviInfoPanel.NaviInfoPanelConfig();
        config.setRerouteViewEnable(true);             // 重算按鈕
        carNaviInfoPanel.setNaviInfoPanelConfig(config);
    }

    private void addTencentCallback() {
        mCarManagerSingleton.get().addTencentNaviCallback(mTencentCallback);
    }
    
    private TencentNaviCallback mTencentCallback = new TencentNaviCallback() {
        @Override
        public void onStartNavi() { }

        @Override
        public void onStopNavi() { }

        @Override
        public void onOffRoute() { }

        @Override
        public void onRecalculateRouteSuccess(int recalculateType,
                                              ArrayList<RouteData> routeDataList) { }
        @Override
        public void onRecalculateRouteSuccessInFence(int recalculateType) { }

        @Override
        public void onRecalculateRouteFailure(int recalculateType,
                                              int errorCode, String errorMessage) { }

        @Override
        public void onRecalculateRouteStarted(int recalculateType) { }

        @Override
        public void onRecalculateRouteCanceled() { }

        @Override
        public int onVoiceBroadcast(NaviTts tts) {
            return 0;
        }

        @Override
        public void onArrivedDestination() { }

        @Override
        public void onPassedWayPoint(int passPointIndex) { }

        @Override
        public void onUpdateRoadType(int roadType) { }

        @Override
        public void onUpdateParallelRoadStatus(ParallelRoadStatus parallelRoadStatus) {

        }

        @Override
        public void onUpdateAttachedLocation(AttachedLocation location) { }

        @Override
        public void onFollowRouteClick(String routeId, ArrayList<LatLng> latLngArrayList) { }
    };

readGpsFile方法異步

private ArrayList<String> readGpsFile(String fileName) {
        ArrayList<String> gpsLineStrs = new ArrayList<>();
        BufferedReader reader = null;
        try {
            File file = new File(fileName);
            InputStream is = new FileInputStream(file);
            reader = new BufferedReader(new InputStreamReader(is));

            String line;
            while ((line = reader.readLine()) != null) {
                gpsLineStrs.add(line);
            }
            return gpsLineStrs;
        } catch (Exception e) {
            Log.e(LOG_TAG, "startMockTencentLocation Exception", e);
            e.printStackTrace();
        } finally {
            try {
                if (reader != null) {
                    reader.close();
                }
            } catch (Exception e) {
                Log.e(LOG_TAG, "startMockTencentLocation Exception", e);
                e.printStackTrace();
            }
        }
        return null;
    }

getFromAndTo方法，獲取起終點爲進行算路ide

private void getFromAndTo(ArrayList<String> gpsLineStrs) {
        final int size;
        if ((size = gpsLineStrs.size()) < 2) {
            return;
        }
        final String firstLine = gpsLineStrs.get(0);
        final String endLine = gpsLineStrs.get(size - 1);
        try {
            final String[] fromParts = firstLine.split(",");
            mFrom = new NaviPoi(Double.valueOf(fromParts[1]), Double.valueOf(fromParts[0]));
            final String[] endParts = endLine.split(",");
            mTo = new NaviPoi(Double.valueOf(endParts[1]), Double.valueOf(endParts[0]));
        } catch (Exception e) {
            mFrom = null;
            mTo = null;
        }
    }

算路searchAndStartNavigation()

可使用導航SDK的算路方法而且獲取算路成功和失敗的回調


    private void searchAndStartNavigation() {
        mCarManagerSingleton.get()
                .searchRoute(new TencentRouteSearchCallback() {
                    @Override
                    public void onRouteSearchFailure(int i, String s) {
                        toast("路線規劃失敗");
                    }

                    @Override
                    public void onRouteSearchSuccess(ArrayList<RouteData> arrayList) {
                        if (arrayList == null || arrayList.isEmpty()) {
                            toast("未能召回路線");
                            return;
                        }
                        handleGpsPlayback();
                    }
                });
    }

調用GpsPlaybackEngine方法，進行listen定位，而後開始導航

private void handleGpsPlayback() {

// 與GpsPlaybackEngine 進行交互, 添加locationListener
GpsPlaybackEngine.getInstance().addTencentLocationListener(listener);

//與GpsPlaybackEngine 進行交互，開始定位
        GpsPlaybackEngine.getInstance().startMockTencentLocation(mGpsTrackPath, isLocation84);
        try {
            mCarManagerSingleton.get().startNavi(0);
        } catch (Exception e) {
            toast(e.getMessage());
        }
    }

結束導航

@Override
    protected void onDestroy() {
// 與GpsPlaybackEngine 進行交互, removelocationListener
mCarManagerSingleton.get().removeTencentNaviCallback(mTencentCallback);
//與GpsPlaybackEngine 進行交互，結束定位GpsPlaybackEngine.getInstance().removeTencentLocationListener(listener);
        GpsPlaybackEngine.getInstance().stopMockLocation();
        if (mCarManagerSingleton.get().isNavigating()) {
        // 結束導航
            mCarManagerSingleton.get().stopNavi();
        }
        super.onDestroy();
    }

GPSPlaybackEngine.java

這一部分主要是對於GPS文件進行讀取而且提供外界可用的add/removelistener方法，start/stopMockLocation方法
由於要讓engine運行在本身的線程，因此使用runnable機制

public class GpsPlaybackEngine implements Runnable{

            // 代碼在下方
}

而使用到的fields

// Tencent軌跡Mock, TencentLocationListener須要利用騰訊定位SDK獲取
private ArrayList<TencentLocationListener> mTencentLocationListeners = new ArrayList<>();
    
// 獲取的location數據
private List<String> mDatas = new ArrayList<String>();
     
private boolean mIsReplaying = false;

private boolean mIsMockTencentLocation = true;

private Thread mMockGpsProviderTask = null;

// 是否已經暫停
private boolean mPause = false;

private double lastPointTime = 0;
private double sleepTime = 0;

關鍵方法

listener相關

// 添加listener
    public void addTencentLocationListener(TencentLocationListener listener) {
        if (listener != null) {
            mTencentLocationListeners.add(listener);
        }
    }

    // 移除listener 
    public void removeTencentLocationListener(TencentLocationListener listener) {
        if (listener != null) {
            mTencentLocationListeners.remove(listener);
        }
    }

開始/關閉模擬軌跡

/*
     * 模擬軌跡
     * @param context
     * @param fileName 軌跡文件絕對路徑
     */
    public void startMockTencentLocation(String fileName, boolean is84) {

       // 首先清除之前的data
        mDatas.clear();
        // 判斷是不是84座標系
        mIsMockTencentLocation = !is84;
        BufferedReader reader = null;
        try {
            File file = new File(fileName);
            InputStream is = new FileInputStream(file);
            reader = new BufferedReader(new InputStreamReader(is));

            String line;
            while ((line = reader.readLine()) != null) {
                mDatas.add(line);
            }
            if (mDatas.size() > 0) {
                mIsReplaying = true;
                synchronized (this) {
                    mPause = false;
                }
                // 開啓異步線程
                mMockGpsProviderTask = new Thread(this);
                mMockGpsProviderTask.start();
            }
        } catch (Exception e) {
            Log.e(TAG, "startMockTencentLocation Exception", e);
            e.printStackTrace();
        } finally {
            try {
                if (reader != null) {
                    reader.close();
                }
            } catch (Exception e) {
                Log.e(TAG, "startMockTencentLocation Exception", e);
                e.printStackTrace();
            }
        }
    }

/**
     * 退出應用前也須要調用中止模擬位置，不然手機的正常GPS定位不會恢復
     */
    public void stopMockTencentLocation() {
        try {
            mIsReplaying = false;
            mMockGpsProviderTask.join();
            mMockGpsProviderTask = null;
            lastPointTime = 0;
        } catch (Exception e) {
            Log.e(TAG, "stopMockTencentLocation Exception", e);
            e.printStackTrace();
        }
    }

runnable相關

@Override
    public void run() {
        for (String line : mDatas) {
            if (!mIsReplaying) {
                Log.e(TAG, "stop gps replay");
                break;
            }
            if (TextUtils.isEmpty(line)) {
                continue;
            }

            try {
                Thread.sleep(getSleepTime(line) * 1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            boolean mockResult;
            mockResult = mockTencentLocation(line);
            if (!mockResult) {
                break;
            }

            try {
                checkToPauseThread();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

使用到的private方法

private void checkToPauseThread() throws InterruptedException {
        synchronized (this) {
            while (mPause) {
                wait();
            }
        }
}

private int getSleepTime(String line) {
    try {
        String[] parts = line.split(",");
        double time = Double.valueOf(parts[6]);
        time = (int) Math.floor(time);
        if(lastPointTime != 0) {
            sleepTime = time  - lastPointTime; // 單位s，取整數
        }
        lastPointTime = time;
    }catch (Exception e) {
    
    }
    return (int)sleepTime;
}

private boolean mockTencentLocation(String line) {
    try {
        String[] parts = line.split(",");

        double latitude = Double.valueOf(parts[1]);
        double longitude = Double.valueOf(parts[0]);
        float accuracy = Float.valueOf(parts[2]);
        float bearing = Float.valueOf(parts[3]);
        float speed = Float.valueOf(parts[4]);
        double altitude = Double.valueOf(parts[7]);
        double time = Double.valueOf(parts[6]);

        String buildingId;
        String floorName;
        if (parts.length >= 10) {
            buildingId = parts[8];
            floorName = parts[9];
        } else {
            buildingId = "";
            floorName = "";
        }

        if (!mIsMockTencentLocation) {
            double[] result = CoordinateConverter.wgs84togcj02(longitude, latitude);
            longitude = result[0];
            latitude = result[1];
        }

        GpsPlaybackEngine.MyTencentLocation location = new GpsPlaybackEngine.MyTencentLocation();
        location.setProvider("gps");
        location.setLongitude(longitude);
        location.setLatitude(latitude);
        location.setAccuracy(accuracy);
        location.setDirection(bearing);
        location.setVelocity(speed);
        location.setAltitude(altitude);
        location.setBuildingId(buildingId);
        location.setFloorName(floorName);
        location.setRssi(4);
        location.setTime(System.currentTimeMillis());
//            location.setTime((long) time * 1000);

        for (TencentLocationListener listener : mTencentLocationListeners) {
            if (listener != null) {
                String curTime;
                if (location != null && location.getTime() != 0) {
                    long millisecond = location.getTime();
                    Date date = new Date(millisecond);
                    SimpleDateFormat format = new SimpleDateFormat("yyyy.MM.dd hh:mm:ss");
                    curTime = format.format(date);
                } else {
                    curTime = "null";
                }
                Log.e(TAG, "time : " + curTime
                        + ", longitude : " + longitude
                        + " , latitude : " + latitude);

                listener.onLocationChanged(location, 0, "");
                listener.onStatusUpdate(LocationManager.GPS_PROVIDER, mMockGpsStatus, "");
            }
        }
    } catch(Exception e) {
        Log.e(TAG, "Mock Location Exception", e);
        // 若是未開位置模擬，這裏可能出異常
        e.printStackTrace();
        return false;
    }
    return true;
}

CoordinateConverter.wg84togcj02

/**
     * WGS84轉GCJ02(火星座標系)
     * 
     * @param lng WGS84座標系的經度
     * @param lat WGS84座標系的緯度
     * @return 火星座標數組
     */
    public static double[] wgs84togcj02(double lng, double lat) {
        if (out_of_china(lng, lat)) {
            return new double[] { lng, lat };
        }
        double dlat = transformlat(lng - 105.0, lat - 35.0);
        double dlng = transformlng(lng - 105.0, lat - 35.0);
        double radlat = lat / 180.0 * pi;
        double magic = Math.sin(radlat);
        magic = 1 - ee * magic * magic;
        double sqrtmagic = Math.sqrt(magic);
        dlat = (dlat * 180.0) / ((a * (1 - ee)) / (magic * sqrtmagic) * pi);
        dlng = (dlng * 180.0) / (a / sqrtmagic * Math.cos(radlat) * pi);
        double mglat = lat + dlat;
        double mglng = lng + dlng;
        return new double[] { mglng, mglat };
    }

內部類MyTencentLocation implements 定位sdk的接口

class MyTencentLocation implements TencentLocation {
        /**
         * 緯度
         */
        private double latitude = 0;
        /**
         * 經度
         */
        private double longitude = 0;
        /**
         * 精度
         */
        private float accuracy = 0;
        /**
         * gps方向
         */
        private float direction = -1;
        /**
         * 速度
         */
        private float velocity = 0;
        /**
         * 時間
         */
        private long time = 0;
        /**
         * 海拔高度
         */
        private double altitude = 0;
        /**
         * 定位來源
         */
        private String provider = "";
        /**
         * GPS信號等級
         */
        private int rssi = 0;

        /**
         * 手機的機頭方向
         */
        private float phoneDirection = -1;

        private String buildingId = "";

        private String floorName = "";

        private  String fusionProvider = "";

        @Override
        public String getProvider() {
            return provider;
        }

        @Override
        public String getSourceProvider() {
            return null;
        }

        @Override
        public String getFusionProvider() {
            return fusionProvider;
        }

        @Override
        public String getCityPhoneCode() {
            return null;
        }

        @Override
        public double getLatitude() {
            return latitude;
        }

        @Override
        public double getLongitude() {
            return longitude;
        }

        @Override
        public double getAltitude() {
            return latitude;
        }

        @Override
        public float getAccuracy() {
            return accuracy;
        }

        @Override
        public String getName() {
            return null;
        }

        @Override
        public String getAddress() {
            return null;
        }

        @Override
        public String getNation() {
            return null;
        }

        @Override
        public String getProvince() {
            return null;
        }

        @Override
        public String getCity() {
            return null;
        }

        @Override
        public String getDistrict() {
            return null;
        }

        @Override
        public String getTown() {
            return null;
        }

        @Override
        public String getVillage() {
            return null;
        }

        @Override
        public String getStreet() {
            return null;
        }

        @Override
        public String getStreetNo() {
            return null;
        }

        @Override
        public Integer getAreaStat() {
            return null;
        }

        @Override
        public List<TencentPoi> getPoiList() {
            return null;
        }

        @Override
        public float getBearing() {
            return direction;
        }

        @Override
        public float getSpeed() {
            return velocity;
        }

        @Override
        public long getTime() {
            return time;
        }

        @Override
        public long getElapsedRealtime() {
            return time;
        }

        @Override
        public int getGPSRssi() {
            return rssi;
        }

        @Override
        public String getIndoorBuildingId() {
            return buildingId;
        }

        @Override
        public String getIndoorBuildingFloor() {
            return floorName;
        }

        @Override
        public int getIndoorLocationType() {
            return 0;
        }

        @Override
        public double getDirection() {
            return phoneDirection;
        }

        @Override
        public String getCityCode() {
            return null;
        }

        @Override
        public TencentMotion getMotion() {
            return null;
        }

        @Override
        public int getGpsQuality() {
            return 0;
        }

        @Override
        public float getDeltaAngle() {
            return 0;
        }

        @Override
        public float getDeltaSpeed() {
            return 0;
        }

        @Override
        public int getCoordinateType() {
            return 0;
        }

        @Override
        public int getFakeReason() {
            return 0;
        }

        @Override
        public int isMockGps() {
            return 0;
        }

        @Override
        public Bundle getExtra() {
            return null;
        }

        @Override
        public int getInOutStatus() {
            return 0;
        }

        public void setLatitude(double latitude) {
            this.latitude = latitude;
        }

        public void setLongitude(double longitude) {
            this.longitude = longitude;
        }

        public void setAccuracy(float accuracy) {
            this.accuracy = accuracy;
        }

        public void setDirection(float direction) {
            this.direction = direction;
        }

        public void setVelocity(float velocity) {
            this.velocity = velocity;
        }

        public void setTime(long time) {
            this.time = time;
        }

        public void setAltitude(double altitude) {
            this.altitude = altitude;
        }

        public void setProvider(String provider) {
            this.provider = provider;
        }

        public void setFusionProvider(String fusionProvider) { this.fusionProvider = fusionProvider; }

        public void setRssi(int rssi) {
            this.rssi = rssi;
        }

        public void setPhoneDirection(float phoneDirection) {
            this.phoneDirection = phoneDirection;
        }

        public void setBuildingId(String buildingId) {
            this.buildingId = buildingId;
        }

        public void setFloorName(String floorName) {
            this.floorName = floorName;
        }
    }