锐客网

  1. 首页 > it技术 > >

安卓利用高德SDK实现后台持续定位并绘制轨迹

【安卓利用高德SDK实现后台持续定位并绘制轨迹】实现后台持续定位网上资料很多，大部分都是关于服务保活的！但有时不一定是服务挂了，而是GPS模块休眠了；下面是我的定位服务类
acquireWakeLock() 方法是设置CPU不休眠防止GPS休眠了
startForeground(notification_id, buildNotification()) 设置为前台服务在8.0下不被杀死
setAppBackgroundPlayer() 后台播放无声音乐保活服务
此外我还加了1像素保活机制，这个代码我就不贴了，网上自己搜下!

public class LocationService extends Service implements AMapLocationListener {//// 定位相关 //private LocationClient mLocClient; //// private int msgId = -1; private PowerManager.WakeLock wakeLock = null; //声明AMapLocationClient类对象 private AMapLocationClient mLocationClient = null; private AMapLocationClientOption locationOption; private final int INTERVAL_ACTION_PATROL_FREQUENCY = 1000; private final int INTERVAL_ACTION_FAST_LOCATION = 1000*3; //如果速度过快，改为3秒定一次 privateAMapLocation location = null; private int mInterval; //android 8.0后台定位权限 private static final String NOTIFICATION_CHANNEL_NAME = "BG_LOCTION"; private NotificationManager notificationManager = null; boolean isCreateChannel = false; public static long mLocationMs = 0; public static long mUploadStampMs = 0; private List latLngPool = new ArrayList<>(); //存连续定位五个点@Override public void onCreate() { super.onCreate(); startForeground(12123, buildNotification()); mInterval = PreferenceUtils.getInterval(); initGaoDe(); }private void initGaoDe() { //初始化定位 mLocationClient = new AMapLocationClient(getApplicationContext()); //设置定位回调监听 mLocationClient.setLocationListener(this); locationOption = new AMapLocationClientOption(); /** * 设置定位场景，目前支持三种场景（签到、出行、运动，默认无场景） */ //locationOption.setLocationPurpose(AMapLocationClientOption.AMapLocationPurpose.Sport); //设置定位模式为AMapLocationMode.Device_Sensors，仅设备模式。 locationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy); locationOption.setOnceLocation(false); //获取最近3s内精度最高的一次定位结果： //设置setOnceLocationLatest(boolean b)接口为true，启动定位时SDK会返回最近3s内精度最高的一次定位结果。如果设置其为true，setOnceLocation(boolean b)接口也会被设置为true，反之不会，默认为false。 //option.setOnceLocationLatest(true); //设置定位间隔,单位毫秒,默认为2000ms，最低1000ms。 locationOption.setInterval(1000*mInterval); //设置是否返回地址信息（默认返回地址信息） locationOption.setNeedAddress(true); //设置是否允许模拟位置,默认为true，允许模拟位置 locationOption.setMockEnable(true); locationOption.setGpsFirst(true); //单位是毫秒，默认30000毫秒，建议超时时间不要低于8000毫秒。 locationOption.setHttpTimeOut(50000); //关闭缓存机制 locationOption.setLocationCacheEnable(false); if (null != mLocationClient && mInterval != 0) { mLocationClient.setLocationOption(locationOption); //设置场景模式后最好调用一次stop，再调用start以保证场景模式生效 mLocationClient.stopLocation(); mLocationClient.startLocation(); } }// @Override public int onStartCommand(Intent intent, int flags, int startId) { if (intent != null) { msgId = intent.getIntExtra("msgId", -1); } flags = START_STICKY; setAppBackgroundPlayer(); acquireWakeLock(); // 刷新定位 if (mLocationClient != null && mLocationClient.isStarted()) { mLocationClient.startLocation(); } return super.onStartCommand(intent, flags, startId); }@Override public void onLocationChanged(AMapLocation loc) { if (null != loc) { if (loc.getErrorCode() == 0) { /** * *做点位上传或者保存操作 */ } } } /** * 获取时间 * * @return */ public String getTime() { SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss "); Date curDate = new Date(System.currentTimeMillis()); //获取当前时间 String str = formatter.format(curDate); return str; }@Override public void onDestroy() { super.onDestroy(); releaseWakeLock(); if (mLocationClient != null) { mLocationClient.unRegisterLocationListener(this); mLocationClient.stopLocation(); //停止定位后，本地定位服务并不会被销毁 mLocationClient.onDestroy(); //销毁定位客户端，同时销毁本地定位服务。 } pausePlayer(); }@Override public IBinder onBind(Intent intent) { return null; }/** * PARTIAL_WAKE_LOCK:保持CPU 运转，屏幕和键盘灯有可能是关闭的。 * SCREEN_DIM_WAKE_LOCK：保持CPU 运转，允许保持屏幕显示但有可能是灰的，允许关闭键盘灯 * SCREEN_BRIGHT_WAKE_LOCK：保持CPU 运转，允许保持屏幕高亮显示，允许关闭键盘灯 * FULL_WAKE_LOCK：保持CPU 运转，保持屏幕高亮显示，键盘灯也保持亮度 * ACQUIRE_CAUSES_WAKEUP：强制使屏幕亮起，这种锁主要针对一些必须通知用户的操作. * ON_AFTER_RELEASE：当锁被释放时，保持屏幕亮起一段时间 */ private void acquireWakeLock() { if (null == wakeLock) { PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE, getClass() .getCanonicalName()); if (null != wakeLock) { //Log.i(TAG, "call acquireWakeLock"); Log.d("33333", "call acquireWakeLock"); wakeLock.acquire(); } } }private Notification buildNotification() {Notification.Builder builder = null; Notification notification = null; if (android.os.Build.VERSION.SDK_INT >= 26) { //Android O上对Notification进行了修改，如果设置的targetSDKVersion>=26建议使用此种方式创建通知栏 if (null == notificationManager) { notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); } String channelId = getPackageName(); if (!isCreateChannel) { NotificationChannel notificationChannel = new NotificationChannel(channelId, NOTIFICATION_CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH); notificationChannel.enableLights(false); //是否在桌面icon右上角展示小圆点 notificationChannel.setLightColor(Color.BLUE); //小圆点颜色 notificationChannel.setShowBadge(true); //是否在久按桌面图标时显示此渠道的通知 notificationManager.createNotificationChannel(notificationChannel); isCreateChannel = true; } builder = new Notification.Builder(getApplicationContext(), channelId); } else { builder = new Notification.Builder(getApplicationContext()); } builder.setSmallIcon(R.mipmap.ic_launcher) .setContentTitle("后台定位服务") .setContentText("") .setWhen(System.currentTimeMillis()); if (android.os.Build.VERSION.SDK_INT >= 16) { notification = builder.build(); } else { return builder.getNotification(); } return notification; } // 释放设备电源锁 private void releaseWakeLock() { if (null != wakeLock && wakeLock.isHeld()) { Log.d("33333", "call releaseWakeLock"); //Log.i(TAG, "call releaseWakeLock"); wakeLock.release(); wakeLock = null; } } /** * 设置应用进入后台，播放音频来进行cpu不休眠，进行应用保活 */ private void setAppBackgroundPlayer() { MediaPlayerUtils.getInstance().playerMusic("no_notice.mp3", true); } private void pausePlayer() { MediaPlayerUtils.getInstance().destoryPlayer(); } }

    推荐阅读


    上一篇：哺乳期能不能减肥（哺乳期快速减肥的方法|哺乳期能不能减肥？哺乳期快速减肥的方法, 欧洲营养学家告诉你）

    下一篇：土地