网络位置提供商的状态从未改变？

Question

与LocationManager注册为LocationManager.NETWORK_PROVIDER后，回调onStatusChanged()当数据或网络中注册周期接通/断开不会被调用甚至。这种方法对基于网络的提供者无效吗？

Answer 1

试试这个：

package com.mytest; 

import android.R; 
import android.app.Activity; 
import android.content.Context; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.location.LocationProvider; 
import android.os.Bundle; 
import android.widget.TextView; 

public class NetworkTest extends Activity { 

    private LocationManager locationManager; 
    private TextView textView; 
    private final LocationListener networkLocationListener=new LocationListener(){ 

     @Override 
     public void onStatusChanged(String provider, int status, Bundle extras) { 
      switch (status) { 
      case LocationProvider.AVAILABLE: 
       textView.setText(textView.getText().toString() 
         + "Network location available again\n"); 
       break; 
      case LocationProvider.OUT_OF_SERVICE: 
       textView.setText(textView.getText().toString() 
         + "Network location out of service\n"); 
       break; 
      case LocationProvider.TEMPORARILY_UNAVAILABLE: 
       textView.setText(textView.getText().toString() 
         + "Network location temporarily unavailable\n"); 
       break; 
      } 
     } 

     @Override 
     public void onProviderEnabled(String provider) { 
      textView.setText(textView.getText().toString() 
        + "Network Provider Enabled\n"); 
     } 

     @Override 
     public void onProviderDisabled(String provider) { 
      textView.setText(textView.getText().toString() 
        + "Network Provider Disabled\n"); 
     } 

     @Override 
     public void onLocationChanged(Location location) { 
      textView.setText(textView.getText().toString() 
        + "New network location: " 
        + String.format("%9.6f", location.getLatitude()) + ", " 
        + String.format("%9.6f", location.getLongitude()) + "\n"); 
     } 
    }; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activitynetwork); 
     textView = (TextView) findViewById(R.id.textview); 
     locationManager = (LocationManager) 
       getSystemService(Context.LOCATION_SERVICE); 
    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 
     locationManager.requestLocationUpdates(
       LocationManager.NETWORK_PROVIDER, 5000, 0, 
       networkLocationListener); 
    } 

    @Override 
    protected void onPause() { 
     super.onPause(); 
     locationManager.removeUpdates(networkLocationListener); 
    } 
} 

这对我的作品。