Question

我尝试过使用IntentService，但是从不调用侦听器（活动中的相同代码可以进行罚款）

public class ISSubProcesoGps extends IntentService {
    // TODO: Rename actions, choose action names that describe tasks that this
    // IntentService can perform, e.g. ACTION_FETCH_NEW_ITEMS

    public static int hacambiado = 0;

    LocationManager lm;

    double longitude;
    double latitude;

    Location location = null;

    Criteria crit = new Criteria();


    public static volatile boolean shouldContinue = true;
    int contador = 0;




    // TODO: Rename parameters


    public ISSubProcesoGps() {

        super("ISSubProcesoGps");


    }

    /**
     * Starts this service to perform action Foo with the given parameters. If
     * the service is already performing a task this action will be queued.
     *
     * @see IntentService
     */


    @Override
    protected void onHandleIntent(Intent mIntent) {


        LocationManager lm;

        double longitude1;
        double latitude1;

        Location location = null;

        lm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return;
        }
        LocationListener listener = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                latitude=location.getLatitude();
            }

            @Override
            public void onStatusChanged(String s, int i, Bundle bundle) {

            }

            @Override
            public void onProviderEnabled(String s) {

            }

            @Override
            public void onProviderDisabled(String s) {
                String x =s;

            }
        };


        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener );


        latitude = 0;
        longitude = 0;


            Intent intent = new Intent(getBaseContext(), MainActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
            PendingIntent pendIntent = PendingIntent.getActivity(this, 0, intent, 0);

            Notification notification = new Notification.Builder(this)
                    .setSmallIcon(R.drawable.ic_menu_gallery)  // the status icon
                    .setTicker("hola muy myintentservice")  // the status text
                    .setWhen(System.currentTimeMillis())  // the time stamp
                    .setContentTitle("content title")  // the label of the entry
                    .setContentText("content teext")  // the contents of the entry
                    .setContentIntent(pendIntent)  // The intent to send when the entry is clicked
                    .build();

            startForeground(1, notification);

while(true)
{
    try {
        Thread.sleep(1000);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}

    }


}

此代码位于一个按钮中（在一个片段中，它可以正常工作）

LocationManager lm;



Location location = null;

lm = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    return;
}
LocationListener listener = new LocationListener() {
    @Override
    public void onLocationChanged(Location location) {
        latitude=location.getLatitude();
    }

    @Override
    public void onStatusChanged(String s, int i, Bundle bundle) {

    }

    @Override
    public void onProviderEnabled(String s) {

    }

    @Override
    public void onProviderDisabled(String s) {
        String x =s;

    }
};


lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener );

问题是我需要用户可以关闭应用程序并继续保存位置（电池不是问题，应用程序虽然一直在连接）

Answer 1

请勿使用IntentService，使用Service并为Instance variable创建LocationListener，因为LocationListener需要时间来安顿并开始收听位置。

如何在android中获取前台的当前位置？

1 个答案: