Question

在我的应用程序中，我通过调用 locationManager.requestLocationUpdates（）; 来设置10秒的计时器以获取当前位置但问题是我无法获得更新的位置而是提供相同的纬度申请开始的经度和经度..

以下是我在服务中编写的代码..帮助和建议赞赏

public class DemoService extends Service{


    LocationManager locationManager;
    public Timer timer;
    public static int i;
    private String FILE_NAME = "location.txt";
    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onStart(Intent intent, int startId) {
        // TODO Auto-generated method stub
        super.onStart(intent, startId);

        locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

        Toast.makeText(getApplicationContext(), "onStart()....", Toast.LENGTH_SHORT).show();
        timer = new Timer();
        timer.schedule(new mainTask(), 0, 10*1000);

    }

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();

        Toast.makeText(getApplicationContext(), "onCreate()....", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        Toast.makeText(getApplicationContext(), "onDestroy()....", Toast.LENGTH_SHORT).show();
        timer.cancel();
    }

     private class mainTask extends TimerTask
        { 
            public void run() 
            {
                toastHandler.sendEmptyMessage(0);
            }
        }    



        private final Handler toastHandler = new Handler()
        {
            @Override
            public void handleMessage(Message msg)
            {
                Toast.makeText(getApplicationContext(), "test "+(i), Toast.LENGTH_SHORT).show();
                locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, new MyLocationListerner());
            }
        };    


        public class MyLocationListerner implements LocationListener{


            @Override
            public void onLocationChanged(Location location) {
                // TODO Auto-generated method stub
                i++;
                Toast.makeText(DemoService.this, "\nLat : "+location.getLatitude()+"\nLog : "+location.getLongitude(), Toast.LENGTH_SHORT).show();
                saveToFile(location);
                locationManager.removeUpdates(this);

            }

            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
                // TODO Auto-generated method stub

                Toast.makeText(DemoService.this,"Got onLocationChanged..",Toast.LENGTH_SHORT).show();
                System.out.println("Got onStatusChanged");

            }

            @Override
            public void onProviderEnabled(String provider) {
                // TODO Auto-generated method stub
                Toast.makeText(DemoService.this,"Got onLocationChanged..",Toast.LENGTH_SHORT).show();
                System.out.println("Got onProviderEnabled");
            }

            @Override
            public void onProviderDisabled(String provider) {
                // TODO Auto-generated method stub
                Toast.makeText(DemoService.this,"Got onLocationChanged..",Toast.LENGTH_SHORT).show();
                System.out.println("Got onProviderDisabled");
            }

Answer 1

我通过CWAC Location poller实现了效果，借助警报管理器，我可以有效地获得当前位置，减少电池消耗

无法获得更新的位置

1 个答案: