[移动开发]腾讯地图 anddroid 后台定位

1、在Manifest.xml文件中application标签中添加Service声明

<!--  前台Service的方式来提高进程级别，使定位服务由后台转向前台-->
<service android:name="com.tencent.map.geolocation.s" android:foregroundServiceType="location"/>

注册申请权限，允许在后台获取权限

<!-- Android Q新增权限，允许应用在后台发起定位，如应用target为Q，请添加此权限 -->
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />

2、在Acivity中，申请要求权限，需同意始终获取定位，不然后台定位不起作用

@RequiresApi(api = Build.VERSION_CODES.M)
    private void requestPermission() {
        String[] permissions = onRequestPermissions();
        if (permissions != null) {
            List<String> deniedPermissions = new ArrayList<>();
            for (String permission : permissions) {
                if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
                    deniedPermissions.add(permission);
                }
            }

            if (deniedPermissions.size() > 0) {
                requestPermissions(deniedPermissions.toArray(new String[0]), PERMISSIONS_REQUEST_CODE);
            }
        }
    }

    protected String[] onRequestPermissions() {
        return new String[]{
                Manifest.permission.ACCESS_COARSE_LOCATION,
                Manifest.permission.ACCESS_BACKGROUND_LOCATION,
                Manifest.permission.ACCESS_FINE_LOCATION
        };
    }

3、在启动定位之前，调用enableForegroundLocation，如下：

mLocationManager.enableForegroundLocation(LOC_NOTIFICATIONID, buildNotification());
mLocationManager.requestLocationUpdates(request, this, getMainLooper());

构建Notification

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 (notificationManager == null) {
            notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        }
        String channelId = getPackageName();
        if (!isCreateChannel) {NotificationChannel notificationChannel = new NotificationChannel(channelId,
                    NOTIFICATION_CHANNEL_NAME, NotificationManager.IMPORTANCE_DEFAULT);
            notificationChannel.enableLights(true);//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.setContentTitle("LocationDemo")
            .setContentText("正在后台运行")
            .setWhen(System.currentTimeMillis());

    if (android.os.Build.VERSION.SDK_INT >= 16) {
        notification = builder.build();
    } else {
        notification = builder.getNotification();
    }
    return notification;
}

4、停止定位后，调用disableForegroundLocation停止前台服务，关闭后台定位

LocationManager.removeUpdates(this);
mLocationManager.disableForegroundLocation(true);

腾讯官方文档 定位Demo