Android GPS 不再提供更新

Question

我自己的 android 应用程序不再为我提供 GPS 位置更新。我已经尝试构建尽可能简单的应用程序，但它仍然无法正常工作。状态栏中有一个闪烁的 GPS 图标（所以 GPS 不能正确关闭？），但是我没有收到 locationChanged 更新。

我完全不知道问题出在哪里。

清单包括：

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Mainactivity.java

public class MainActivity extends ActionBarActivity {
    private LocationManager locationManager;
    TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = (TextView) findViewById(R.id.textView);
        locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
    }

    LocationListener locationListener = new LocationListener() {
        public void onLocationChanged(Location location) {
                textView.setText(location.getLatitude() + "  " + location.getLongitude());
        }
        public void onStatusChanged(String provider, int status, Bundle extras) {        }
        public void onProviderEnabled(String provider) {        }
        public void onProviderDisabled(String provider) {        }
    };
}

Answer 1

更改 Activity 以同时实现 LocationListener。

public class MainActivity extends ActionBarActivity implements LocationListener{

从内部class取出函数，把locationListener改成这个

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    textView = (TextView) findViewById(R.id.textView);
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0
         , this); //note changed last parameter to this.
}
//The following methods were inside the inner class.  They were not created in time 
//for oncreate to requestLocationUpdates.
public void onLocationChanged(Location location) {
            textView.setText(location.getLatitude() + "  " 
            + location.getLongitude());
    }
public void onStatusChanged(String provider, int status, Bundle extras) {        }
public void onProviderEnabled(String provider) {        }
public void onProviderDisabled(String provider) {        }

尝试一下，看看效果是否更好。 Activity 本身现在是一个 LocationListener，更新将来到这个 class。

Android GPS 不再提供更新

Android GPS isn't providing updates anymore

gps

android