我被 GPS/网络提供商的位置困住了。我知道这是所有机器人的一个基本问题，但我很长时间以来一直有这个问题。
实际上，我通过单击Option Menu的以下方法获取当前位置并插入数据库。
/****
* GPS Process First of all call listener of Location then checking for GPS_PROVIDER if not
* available then check for NETWORK_PROVIDER and if its also not available then pass
* 0.00,0.00 to longitude and latitude
*/
/** PROCESS for Get Longitude and Latitude **/
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
// Define a listener that responds to location updates
locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
// Called when a new location is found by the network location provider.
longitude = String.valueOf(location.getLongitude());
latitude = String.valueOf(location.getLatitude());
Log.d(TAG, "changed Loc : " + longitude + ":" + latitude);
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
public void onProviderEnabled(String provider) {
}
public void onProviderDisabled(String provider) {
}
};
// getting GPS status
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
// check if GPS enabled
if (isGPSEnabled) {
int i;
for (i = 0; i < 3; i++) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
locationListener);
Location location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
longitude = String.valueOf(location.getLongitude());
latitude = String.valueOf(location.getLatitude());
break;
} else {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
longitude = String.valueOf(location.getLongitude());
latitude = String.valueOf(location.getLatitude());
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0,
0, locationListener);
break;
} else {
longitude = "0.00";
latitude = "0.00";
}
}
}
/**
* Record Inserting Process in Database...
**/
} else {
AlertDialogManager.showAlertforSettings(AccountMenuActivity.this, "GPS Settings",
"GPS is not Enabled. Do you want to Enable?", false);
}
我多次得到0.00 纬度和经度，有时我得到其他国家（中国、南非等）的位置
我不知道为什么会这样，但是在我找到 Stackoverflow 解决方案之后顺便说一句，自从谷歌搜索 2 天后发现了谷歌的新 API，名为FusedLocationProviderApi
我通过以下一些链接实现了但收到如下错误：
/**
* Booleans for GPS and NETWORK is Enabled or not...
*/
boolean gpsEnabled = false;
boolean networkEnabled = false;
//exceptions will be thrown if provider is not permitted.
try {
gpsEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch (Exception ex) {
Log.e("TAG", "GPS Error : " + ex.getLocalizedMessage());
}
try {
networkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
Log.e("TAG", "NetWork Error : " + ex.getLocalizedMessage());
}
Log.e("TAG", "GPS Network status : " + gpsEnabled + " : " + networkEnabled);
//don't start listeners if no provider is enabled
if (!gpsEnabled && !networkEnabled) {
AlertDialogManager.showAlertforSettings(VisitAcitivity.this, "GPS Settings", "GPS is not Enabled. Do you want to Enable?", false);
} else {
Log.i(TAG, "isPlayServiceAvailable" + isPlayServiceAvailable);
if(isPlayServiceAvailable) {
createLocationRequest();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
mGoogleApiClient.connect();
} else {
final MyLocation.LocationResult locationResult = new MyLocation.LocationResult() {
@Override
public void gotLocation(final Location location) {
// Got the location!
runOnUiThread(new Runnable() {
@Override
public void run() {
longitude = String.valueOf(location.getLongitude());
latitude = String.valueOf(location.getLatitude());
saveVisit();
}
});
}
};
MyLocation myLocation = new MyLocation();
myLocation.getLocation(VisitAcitivity.this, locationResult);
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
if(isPlayServiceAvailable && mGoogleApiClient != null)
stopLocationUpdates();
else if (locationManager != null) {
locationManager.removeUpdates(locationListener);
Log.d("msg", "Location Listener ended...");
}
}
@Override
public void onStop() {
super.onStop();
Log.d(TAG, "onStop fired ..............");
if(mGoogleApiClient != null)
mGoogleApiClient.disconnect();
}
@Override
public void onConnected(Bundle bundle) {
Log.d(TAG, "onConnected - isConnected ...............: " + mGoogleApiClient.isConnected());
startLocationUpdates();
}
protected void startLocationUpdates() {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
Log.d(TAG, "Location update started ..............: ");
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
@Override
public void onLocationChanged(Location location) {
Log.d(TAG, "Firing onLocationChanged..............................................");
mCurrentLocation = location;
Log.d(TAG, "UI update initiated .............");
if (null != mCurrentLocation) {
latitude = String.valueOf(mCurrentLocation.getLatitude());
longitude = String.valueOf(mCurrentLocation.getLongitude());
} else {
Log.d(TAG, "location is null ...............");
}
}
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
Log.d(TAG, "Location update stopped .......................");
}
我正在管理两种获取位置的方法：
- Google Play 服务可用或不可用，然后使用 FusedLocation API 获取位置。
- 否则使用我自己的方式获取位置（因为设备太多）。
我在 My 中获得了以下权限AndroidManifest.xml：
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
然后也得到空位置:(这个问题有什么解决方案吗？
提前谢谢你。