我有新的华为手机Ascend G330D,机载4.0.4。 问题是“网络”位置提供程序不起作用,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位置提供商工作正常 3.即使有网络位置(即没有gps),谷歌地图应用程序也能完美运行! (我已经在/ system / app中替换了NetworkLocation.apk,之后谷歌应用程序(地图,本地)开始使用网络位置,最初他们既不工作也没有) 4.没有任何第三方应用程序(来自Market)也可以使用网络位置
由于地图不是开源的,我无法看到与使用Google API的应用程序的区别,但我猜Google地图可能只使用其他地理定位源(或授权密钥)......
有没有人想知道在哪里挖掘网络位置?
答案 0 :(得分:0)
您可以查看本教程以获取完整示例
Get Current Location coordinates , City name
此外,我的工作代码正在使用
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,只要你想要任何Activity
MyLocationListener mylistner = new MyLocationListener(context);
double lat = mylistner.latitude;
double lon = mylistner.longitude;
注意:我的Manifest中还有权限
<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" />