Question

我想在每两分钟后通过GPS在Android（5.1.1）中获取位置。当屏幕打开时应用程序正常工作但是当屏幕关闭时它无法通过GPS获取位置。谁能建议我做什么？以下是我的代码。

startLoggingService() {
            if (locManager == null) {
                locManager=(LocationManager)getSystemService(Context.LOCATION_SERVICE);
            }

            final Criteria criteria = new Criteria();

            criteria.setAccuracy(Criteria.ACCURACY_FINE);
            criteria.setAltitudeRequired(true);
            criteria.setSpeedRequired(true);
            criteria.setBearingRequired(true);
            criteria.setPowerRequirement(Criteria.POWER_LOW);
            criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
            String bestprovider = locManager.getBestProvider(criteria, true);
            if (bestprovider != null && bestprovider.length() > 0) {
                locManager.requestLocationUpdates(bestprovider, gpsMinTime,
                        gpsMinDistance, locationListener);
            }

        }



private final LocationListener locationListener = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {

                didFindLocation = true;
                latitude = location.getLatitude();
                longitude = location.getLongitude();
                altitude = location.getAltitude();
                speed = (float) (location.getSpeed() * 3.6);
                dt = location.getTime();

                gpslatitude = String.valueOf(latitude);
                gpslongitude = String.valueOf(longitude);
                gpsaltitude = String.valueOf(altitude);
                gpsspeed = String.valueOf(speed);

                SimpleDateFormat sdfDateTime = new SimpleDateFormat(
                        "yyyy-MM-dd HH:mm:ss");
                datetime = sdfDateTime.format(new Date(dt));

            }

            @Override
            public void onProviderDisabled(String provider) {
            }

            @Override
            public void onProviderEnabled(String provider) {
            }

            @Override
            public void onStatusChanged(String provider, int status,
                    Bundle extras) {
            }
        };

Answer 1

因为你的设备在屏幕关闭时进入睡眠状态......

你应该使用部分唤醒锁....有关详细信息，请参阅Simplest way to detect a mobile device问题

Android Lollipop - 屏幕关闭时无法获取GPS位置

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