locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER) 使用 Wi-Fi 总是返回 false

Posted 2023-04-14

【中文标题】locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER) 使用 Wi-Fi 总是返回 false

【英文标题】：locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER) use Wi-Fi always return false

【发布时间】：2016-03-22 07:26:42

【问题描述】：

我试过了

NETWORK_PROVIDER 获取该地点的纬度和经度。

我的测试设备是 LG Optimus G Pro(LG-F240L) android 4.4.2，API 19。

使用 Wi-Fi 网络，不是 4G、3G

“isProviderEnabled(LocationManager.NETWORK_PROVIDER)”总是返回 false。

谁能帮帮我？提前谢谢！

这是我的代码：

public class GetCurrentLocationActivity extends Service implements LocationListener 
  private final Context mContext;
  private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10;
  private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1;

protected LocationManager locationManager;

boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean isGetLocation = false;

Location location;
double latitude;
double longitude;

public GetCurrentLocationActivity(Context context)
    this.mContext = context;
    getLocation();




public Location getLocation()
    try
        locationManager = (LocationManager)mContext.getSystemService(LOCATION_SERVICE);
        isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        Log.d("test",""+isGPSEnabled);
        Log.d("test1",""+isNetworkEnabled);
        isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if(!isGPSEnabled && !isNetworkEnabled)
            showSettingsAlert();
         else
            this.isGetLocation = true;

            if(isNetworkEnabled)
                locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, (LocationListener) this);

                if(locationManager!=null)
                    location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                    if(location!=null)
                        latitude = location.getLatitude();
                        longitude = location.getLongitude();
                    
                
            
            if(isGPSEnabled)
                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES,this);
                if(locationManager!=null)
                    location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);

                    if(location!=null)
                        latitude = location.getLatitude();
                        longitude = location.getLongitude();
                    
                
            else
                showSettingsAlert();
            
        
     catch (Exception e)
        e.printStackTrace();
    
    return  location;


public void stopUsingGPS()
    if(locationManager!=null)
        locationManager.removeUpdates(GetCurrentLocationActivity.this);
    


public double getLatitude()
    if(location!=null)
        latitude = location.getLatitude();
    
    return latitude;


public double getLongitude()
    if(location!=null)
        longitude = location.getLongitude();
    
    return longitude;


public boolean isGetLocation()
    return this.isGetLocation;


public void showSettingsAlert()
    AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);

    alertDialog.setTitle("GPS 사용유무셋팅");
    alertDialog.setMessage("GPS 셋팅이 되지 않았을수도 있습니다.\n 설정창으로 가시겠습니까?");

    // OK 를 누르게 되면 설정창으로 이동합니다.
    alertDialog.setPositiveButton("Settings",
            new DialogInterface.OnClickListener() 
                public void onClick(DialogInterface dialog, int which) 
                    Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    mContext.startActivity(intent);

                
            );
    // Cancle 하면 종료 합니다.
    alertDialog.setNegativeButton("Cancel",
            new DialogInterface.OnClickListener() 
                public void onClick(DialogInterface dialog, int which) 
                    dialog.cancel();
                
            );

    alertDialog.show();


@Override
public IBinder onBind(Intent arg0) 
    return null;


public void onLocationChanged(Location location) 
    // TODO Auto-generated method stub



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



public void onProviderEnabled(String provider) 
    // TODO Auto-generated method stub



public void onProviderDisabled(String provider) 
    // TODO Auto-generated method stub


     

这是我的许可：

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>

【参考方案1】：

代码看起来没问题。就权限而言，您只需要前两个：

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

替换条件以检查您的 GPS 是否已启用，如下所示：

            if (isGPSEnabled) 
                if (location == null) 
                    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, (LocationListener)this);
                    Log.d("GPS Enabled", "GPS Enabled");
                    if (locationManager != null) 
                        location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
                        if (location != null) 
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();
                        
                    
                
             //end-fi isGPSEnabled

【讨论】：

我会尽量去我家。谢谢：D

谢谢！为我工作。突然“isProviderEnabled(LocationManager.NETWORK_PROVIDER)”值为真