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我有新的华为手机 Ascend G330D，板载 4.0.4。问题是“网络”位置提供程序不起作用并且根本不返回任何坐标。

其他事实是 1. 应用程序是正确的 - 它可以在很多 android 设备上运行 2. gps 位置提供程序工作正常 3. Google 地图应用程序即使有网络位置（即没有 gps）也能完美运行！（我已经在 /system/app 中替换了 NetworkLocation.apk，之后 Google 应用程序（地图、本地）开始使用网络位置，最初它们都不起作用） 4. 没有任何 3rd 方应用程序（来自 Market）使用网络位置以及

由于地图不是开源的，我看不出这与使用谷歌 API 的应用程序有什么不同，但我猜谷歌地图可能会使用另一个地理定位来源（或授权密钥）......

有谁知道在哪里挖掘以使网络位置正常工作？

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1 回答 1

0

您可以查看本教程以获取完整示例

获取当前位置坐标，城市名称

此外，这是我的工作代码，它与两者一起使用

  • GPS 提供商

  • 网络提供商

    public class MyLocationListener extends Service implements LocationListener {

private static final String TAG = "MyLocationListener";

private Context context = null;

private Location location = null;
private LocationManager locationManager = null;

public static boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;

public double latitude = 0.0;
public double longitude = 0.0;
public String location_address = null;

// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10;
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute

public MyLocationListener(Context ctx) {
    Log.v(TAG + ".MyLocationListener",
            "MyLocationListener constructor called");
    this.context = ctx;
    getLocationValue();
}

public Location getLocationValue() {
    Log.v(TAG + ".getLocationValue", "getLocationValue method called");

    try {
        locationManager = (LocationManager) context
                .getSystemService(LOCATION_SERVICE);

        isGPSEnabled = locationManager
                .isProviderEnabled(LocationManager.GPS_PROVIDER);

        isNetworkEnabled = locationManager
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if (isGPSEnabled) {

            this.canGetLocation = true;
            Log.v(TAG + ".getLocationValue", "GPS provider enabled");
            // Toast.makeText(context, "Gps", 1).show();
            if (location == null) {
                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();
                        Log.v(TAG, "Gps Co-ordinates are:" + latitude + " "
                                + longitude);

                    }
                }
            }

        } else if (isNetworkEnabled) {

            // Toast.makeText(context, "Net", 1).show();
            Log.v(TAG + ".getLocationValue", "Network provider enabled");
            locationManager.requestLocationUpdates(
                    LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES,
                    MIN_DISTANCE_CHANGE_FOR_UPDATES, this);

            if (locationManager != null) {
                location = locationManager
                        .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                if (location != null) {
                    latitude = location.getLatitude();
                    longitude = location.getLongitude();
                    Log.v(TAG, "Co-ordinates are: " + latitude + " "
                            + longitude);

                }
            }

        } else {
            showSettingsAlert();
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

    return location;
}

/**
 * Stop using GPS listener Calling this function will stop using GPS in your
 * app
 * */
public void stopUsingGPS() {
    if (locationManager != null) {
        locationManager.removeUpdates(MyLocationListener.this);
    }
}

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

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

/**
 * Function to check GPS/wifi enabled
 * 
 * @return boolean
 * */
public boolean canGetLocation() {
    return this.canGetLocation;
}

/**
 * Function to show settings alert dialog On pressing Settings button will
 * lauch Settings Options
 * */
public void showSettingsAlert() {
    AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);

    alertDialog.setTitle("GPS Settings");
    alertDialog
            .setMessage("GPS is not enabled. Do you want to go to settings menu?");

    alertDialog.setPositiveButton("Settings",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    Intent intent = new Intent(
                            Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    context.startActivity(intent);
                }
            });
    alertDialog.setNegativeButton("Cancel",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    dialog.cancel();
                }
            });
    alertDialog.show();
}

@Override
public void onLocationChanged(Location location) {
}

@Override
public void onProviderDisabled(String provider) {
}

@Override
public void onProviderEnabled(String provider) {
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}

@Override
public IBinder onBind(Intent intent) {
    return null;
}}

以这种方式使用上面的代码，只要你想在任何活动中

MyLocationListener mylistner = new MyLocationListener(context);
        double lat = mylistner.latitude;
        double lon = mylistner.longitude;

注意：我的清单中也有打击权限

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

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"/>   
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
于 2013-01-16T10:55:15.890 回答