Android 在安卓系统中，如何连续接收GPS定位？

android.location.LocationListener的location listener的onLocationChanged（）函数中存在问题

在下面的代码中，在请求LocationManager的RequestLocationUpdate后，onLocationChanged会以不均匀的间隔调用，即我已将period设置为1秒，但不会在每秒钟后收到位置更改

import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;

@SuppressWarnings("MissingPermission")
public class SimplePositionProvider extends PositionProvider implements LocationListener {

public SimplePositionProvider(Context context, PositionListener listener) {
super(context, listener);

Log.i("SimplePositionProvider", "start");
if (!type.equals(LocationManager.NETWORK_PROVIDER)) {
type = LocationManager.GPS_PROVIDER;
}

}

public void startUpdates() {
Log.i("startUpdates", "start");
try {
Log.i("requestLocationUpdates", "start");
Log.i("TYPE", type);
locationManager.requestLocationUpdates(type, period, 0, this);
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG, "error");
}
}

public void stopUpdates() {
Log.i("stopUpdates", "start");
locationManager.removeUpdates(this);
}

@Override
public void onLocationChanged(Location location) {
Log.i("onLocationChanged", "start");
updateLocation(location);
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.i("onStatusChanged", "start");
}

@Override
public void onProviderEnabled(String provider) {
Log.i("onProviderEnabled", "start");
}

@Override
public void onProviderDisabled(String provider) {
Log.i("onProviderDisabled", "start");
}

}

}

，您使用的

period

参数是位置更新之间的最小间隔。如果希望在定位系统更新时尽快获取位置，请将

period

设置为零。

使用此类

    public class MyLocationService extends Service {
    private static final String TAG = "MyLocationService";
    private LocationManager mLocationManager = null;
    private static final int LOCATION_INTERVAL = 1000 * 30;;
    private static final float LOCATION_DISTANCE = 0f;


    private final IBinder serviceBinder = new MyLocationService.RunServiceBinder();

    public MyLocationService() {
    }

    LocationListener[] mLocationListeners = new LocationListener[]{
            new LocationListener(LocationManager.GPS_PROVIDER),

    };

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.e(TAG, "onStartCommand");
        super.onStartCommand(intent, flags, startId);
        return START_STICKY;
    }

    @Override
    public void onCreate() {

        Log.e(TAG, "onCreate");

        initializeLocationManager();

     /*   try {
            mLocationManager.requestLocationUpdates(
                    LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
                    mLocationListeners[1]);
        } catch (java.lang.SecurityException ex) {
            Log.i(TAG, "fail to request location update, ignore", ex);
        } catch (IllegalArgumentException ex) {
            Log.d(TAG, "network provider does not exist, " + ex.getMessage());
        }*/



        try {
            mLocationManager.requestLocationUpdates(
                    LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
                    mLocationListeners[0]);
        } catch (java.lang.SecurityException ex) {
            Log.i(TAG, "fail to request location update, ignore", ex);
        } catch (IllegalArgumentException ex) {
            Log.d(TAG, "gps provider does not exist " + ex.getMessage());
        }
    }

    @Override
    public void onDestroy() {
        Log.e(TAG, "onDestroy");
        super.onDestroy();
        if (mLocationManager != null) {
            for (int i = 0; i < mLocationListeners.length; i++) {
                try {
                    if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    mLocationManager.removeUpdates(mLocationListeners[i]);
                } catch (Exception ex) {
                    Log.i(TAG, "fail to remove location listener, ignore", ex);
                }
            }
        }
    }

    private void removeUpdate(){
        if (mLocationManager != null) {
            for (int i = 0; i < mLocationListeners.length; i++) {
                try {
                    if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    mLocationManager.removeUpdates(mLocationListeners[i]);
                } catch (Exception ex) {
                    Log.i(TAG, "fail to remove location listener, ignore", ex);
                }
            }
        }
    }

    private void initializeLocationManager() {
        Log.e(TAG, "initializeLocationManager - LOCATION_INTERVAL: " + LOCATION_INTERVAL + " LOCATION_DISTANCE: " + LOCATION_DISTANCE);
        if (mLocationManager == null) {
            mLocationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        //   throw new UnsupportedOperationException("Not yet implemented");
        return null;
    }

    public class RunServiceBinder extends Binder {
        public MyLocationService getService() {
            return MyLocationService.this;
        }
    }


    private class LocationListener implements android.location.LocationListener {
        Location mLastLocation;

        public LocationListener(String provider) {
            Log.e(TAG, "LocationListener " + provider);
          //  Toast.makeText(MyLocationService.this, ""+provider, Toast.LENGTH_SHORT).show();
            mLastLocation = new Location(provider);
        }

        @Override
        public void onLocationChanged(Location location) {
            Log.e(TAG, "onLocationChanged: " + location);
           // Toast.makeText(MyLocationService.this, ""+"checked", Toast.LENGTH_SHORT).show();
            mLastLocation.set(location);

        }

        @Override
        public void onProviderDisabled(String provider) {
            Log.e(TAG, "onProviderDisabled: " + provider);
        }

        @Override
        public void onProviderEnabled(String provider) {
            Log.e(TAG, "onProviderEnabled: " + provider);
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
            Log.e(TAG, "onStatusChanged: " + provider);
        }
    }


}

公共类MyLocationService扩展服务{
私有静态最终字符串TAG=“MyLocationService”；
私有位置管理器mLocationManager=null；
专用静态最终整数位置_间隔=1000*30；；
专用静态最终浮动位置_距离=0f；
private final IBinder serviceBinder=新建MyLocationService.RunServiceBinder（）；
公共MyLocationService（）{
}
LocationListener[]mlLocationListeners=新LocationListener[]{
新LocationListener（LocationManager.GPS_提供程序），
};
@凌驾
公共int onStartCommand（Intent Intent、int标志、int startId）{
Log.e（标记“onStartCommand”）；
super.onStartCommand（intent、flags、startId）；
返回开始时间；
}
@凌驾
public void onCreate（）{
Log.e（标记为“onCreate”）；
初始化ElocationManager（）；
/*试一试{
mLocationManager.RequestLocationUpdate(
LocationManager.NETWORK_提供程序、位置间隔、位置距离、，
mLocationListeners[1]）；
}catch（java.lang.SecurityException ex）{
Log.i（标记“无法请求位置更新，忽略”，例如）；
}捕获（IllegalArgumentException ex）{
Log.d（标记“网络提供商不存在”+ex.getMessage（））；
}*/
试一试{
mLocationManager.RequestLocationUpdate(
LocationManager.GPS\u提供程序、位置\u间隔、位置\u距离、，
mLocationListeners[0]）；
}catch（java.lang.SecurityException ex）{
Log.i（标记“无法请求位置更新，忽略”，例如）；
}捕获（IllegalArgumentException ex）{
Log.d（标记“gps提供程序不存在”+ex.getMessage（））；
}
}
@凌驾
公共空间{
Log.e（标签“onDestroy”）；
super.ondestory（）；
if（mLocationManager！=null）{
for（int i=0；i

根据，您应该使用来请求位置更新。如果内存可用，该解决方案将按指定的时间间隔发送更新。哟

    public class MyLocationService extends Service {
    private static final String TAG = "MyLocationService";
    private LocationManager mLocationManager = null;
    private static final int LOCATION_INTERVAL = 1000 * 30;;
    private static final float LOCATION_DISTANCE = 0f;


    private final IBinder serviceBinder = new MyLocationService.RunServiceBinder();

    public MyLocationService() {
    }

    LocationListener[] mLocationListeners = new LocationListener[]{
            new LocationListener(LocationManager.GPS_PROVIDER),

    };

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.e(TAG, "onStartCommand");
        super.onStartCommand(intent, flags, startId);
        return START_STICKY;
    }

    @Override
    public void onCreate() {

        Log.e(TAG, "onCreate");

        initializeLocationManager();

     /*   try {
            mLocationManager.requestLocationUpdates(
                    LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
                    mLocationListeners[1]);
        } catch (java.lang.SecurityException ex) {
            Log.i(TAG, "fail to request location update, ignore", ex);
        } catch (IllegalArgumentException ex) {
            Log.d(TAG, "network provider does not exist, " + ex.getMessage());
        }*/



        try {
            mLocationManager.requestLocationUpdates(
                    LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
                    mLocationListeners[0]);
        } catch (java.lang.SecurityException ex) {
            Log.i(TAG, "fail to request location update, ignore", ex);
        } catch (IllegalArgumentException ex) {
            Log.d(TAG, "gps provider does not exist " + ex.getMessage());
        }
    }

    @Override
    public void onDestroy() {
        Log.e(TAG, "onDestroy");
        super.onDestroy();
        if (mLocationManager != null) {
            for (int i = 0; i < mLocationListeners.length; i++) {
                try {
                    if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    mLocationManager.removeUpdates(mLocationListeners[i]);
                } catch (Exception ex) {
                    Log.i(TAG, "fail to remove location listener, ignore", ex);
                }
            }
        }
    }

    private void removeUpdate(){
        if (mLocationManager != null) {
            for (int i = 0; i < mLocationListeners.length; i++) {
                try {
                    if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    mLocationManager.removeUpdates(mLocationListeners[i]);
                } catch (Exception ex) {
                    Log.i(TAG, "fail to remove location listener, ignore", ex);
                }
            }
        }
    }

    private void initializeLocationManager() {
        Log.e(TAG, "initializeLocationManager - LOCATION_INTERVAL: " + LOCATION_INTERVAL + " LOCATION_DISTANCE: " + LOCATION_DISTANCE);
        if (mLocationManager == null) {
            mLocationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        //   throw new UnsupportedOperationException("Not yet implemented");
        return null;
    }

    public class RunServiceBinder extends Binder {
        public MyLocationService getService() {
            return MyLocationService.this;
        }
    }


    private class LocationListener implements android.location.LocationListener {
        Location mLastLocation;

        public LocationListener(String provider) {
            Log.e(TAG, "LocationListener " + provider);
          //  Toast.makeText(MyLocationService.this, ""+provider, Toast.LENGTH_SHORT).show();
            mLastLocation = new Location(provider);
        }

        @Override
        public void onLocationChanged(Location location) {
            Log.e(TAG, "onLocationChanged: " + location);
           // Toast.makeText(MyLocationService.this, ""+"checked", Toast.LENGTH_SHORT).show();
            mLastLocation.set(location);

        }

        @Override
        public void onProviderDisabled(String provider) {
            Log.e(TAG, "onProviderDisabled: " + provider);
        }

        @Override
        public void onProviderEnabled(String provider) {
            Log.e(TAG, "onProviderEnabled: " + provider);
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
            Log.e(TAG, "onStatusChanged: " + provider);
        }
    }


}

Handler handler = new Handler(Looper.myLooper());
handler.postDelayed(new Runnable() {
    @Override
    public void run() {
      if (expectingLocationUpdates) {
        restartLocationUpdates();
      }
    }
}, EXPIRATION_DURATION);