Question

我收到以下错误

Error:(197, 28) error: no suitable method found for requestLocationUpdates    (String,long,float,com.google.android.gms.location.LocationListener) method LocationManager.requestLocationUpdates (String,long,float,android.location.LocationListener) is not applicable
(argument mismatch; com.google.android.gms.location.LocationListener cannot be converted to android.location.LocationListener)
method LocationManager.requestLocationUpdates(String,long,float,PendingIntent) is not applicable
(argument mismatch; com.google.android.gms.location.LocationListener cannot be converted to PendingIntent)

method LocationManager.requestLocationUpdates(long,float,Criteria,PendingIntent) is not applicable
(argument mismatch; String cannot be converted to long)

尝试运行我的代码时尽管此行在Android Studio中以红色加下划线

LocationManager.requestLocationUpdates（LocationManager.GPS_PROVIDER，LOCATION_REFRESH_TIME， LOCATION_REFRESH_DISTANCE，LocationListener）;

我仍然没有找到不匹配的来源，并会感谢任何提示或帮助

这是我的位置监听器：

private final LocationListener LocationListener = new LocationListener() {
        @Override
        public void onLocationChanged(final Location location) {
            updateLocation(location);
        }

它调用以下updateLocation：

 protected void updateLocation(Location location) {

      if (location != null && gpsFix == true) {
          addPoint(location);

          if (previousLocation != null)
              distanceTraveled += location.distanceTo(previousLocation);
      }
      previousLocation = location;
  }

调用addPoint

  public void addPoint(Location location) {
      locations.add(location);
  }

Locations是Location-objects的ArrayList。除此之外我还有这些声明：

 float LOCATION_REFRESH_DISTANCE = 1;
 long LOCATION_REFRESH_TIME = 100;

编辑：我试试这个时

LocationManager.requestLocationUpdates（LocationManager.GPS_PROVIDER，LOCATION_REFRESH_TIME， LOCATION_REFRESH_DISTANCE，（android.location.LocationListener）LocationListener的）;

我看到以下内容：无法从静态上下文引用非静态方法'requestLocationUpdates（...）'。

这些是我的进口：

import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.graphics.Paint;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.PowerManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.FrameLayout;
import android.location.LocationListener;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.PolylineOptions;
import java.util.ArrayList;
import java.util.List;

Answer 1

解

if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
        float LOCATION_REFRESH_DISTANCE = 1;
        long LOCATION_REFRESH_TIME = 100;
        mlocationListener = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {

                updateLocation(location);
            }

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

            }

            @Override
            public void onProviderEnabled(String s) {

            }

            @Override
            public void onProviderDisabled(String s) {

            }
        };

        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,LOCATION_REFRESH_TIME, LOCATION_REFRESH_DISTANCE, mlocationListener);
    }

我在LocationManager中有一个大写字母L.这就是为什么我没有访问Object locationManager（使用小l）。就这样！

方法LocationManager.requestLocationUpdates -with capital L-是一个静态方法，属于一个类（一个类型，而不是一个对象），与任何代表该类的对象无关，或者说没有与LocationManager

类型的任何对象的关系

com.google.android.gms.location.LocationListener无法转换为android.location.LocationListener

1 个答案: