在我的应用程序中，我最近将 Google 地图从 V1 升级到了 V2。现在，使用 HTC One S (Android 4.1.1)，当我打开 GPS 并进入地图活动时，应用程序会识别出 GPS 已打开，但它的图标没有出现，并且应用程序无法找到我的位置。
在三星 Galaxy Y (Android 2.3) 等设备上，地图可以正常运行。
在三星 Galaxy S2 (Android 4.1.2)、HTC Wildfire (Android 2.3) 等其他设备上，GPS 图标不会出现，但应用程序会找到我的位置。
我哪里错了？
班级：
public class CercaPuntoVendita extends FragmentActivity implements OnMarkerClickListener, LocationSource, LocationListener {
// Identificatore del messaggio della Map
private final static int MAP_MESSAGE_ID = 1;
// Identificatore della ProgressBar
private final static int PROGRESS_DIALOG_ID = 1;
// Riferimento alla Map
private GoogleMap map;
// Riferimento alle UiSettings
private UiSettings uis;
// Riferimento al GeoCoder
private Geocoder geocoder;
// Riferimento alla EditText
private EditText inputName;
// Livello di Zoom
private int nMetriDiametroCitta = 10000;
private int nMetriDiametroVia = 1500;
//Riferimento al MapController
public static MapController mapController;
//Otteniamo il riferimento al LocationManager
private LocationManager myLocationManager = null;
private OnLocationChangedListener myLocationListener = null;
private Criteria myCriteria;
private PuntiVendita overlays = null;
private Context ctx = this;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Mettiamo la View a tutto schermo
requestWindowFeature(Window.FEATURE_NO_TITLE);
// Visualizziamo la Map
setContentView(R.layout.cerca_punto_vendita);
// Gestione font
Button btnSearch = (Button) findViewById(R.id.searchButton);
Typeface tf = Typeface.createFromAsset(ctx.getAssets(), "fonts/CRAI_regular.ttf");
Utils.setFontMultiple(tf, btnSearch);
// Set up della map
setUpMapIfNeeded();
// Riferimento al campo di testo
inputName = (EditText)findViewById(R.id.addressName);
// Otteniamo il riferimento al geocoder
geocoder = new Geocoder(this,Locale.ITALY);
// Otteniamo il riferimento al location manager
myLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Verifichiamo se il GPS è abilitato altrimenti avvisiamo l'utente
if(!myLocationManager.isProviderEnabled("gps")) {
Utils.showWarningDialog(this, "GPS è attualmente disabilitato. E' possibile abilitarlo dal menu impostazioni.");
}
// muovo la mappa su Roma
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(41.893, 12.482), calculateZoomLevel(nMetriDiametroCitta)));
}
@Override
public void onPause() {
super.onPause();
map.setLocationSource(null);
myLocationManager.removeUpdates(this);
}
@Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
map.setMyLocationEnabled(true);
uis = map.getUiSettings();
uis.setMyLocationButtonEnabled(false);
myCriteria = new Criteria();
myCriteria.setAccuracy(Criteria.ACCURACY_COARSE);
myLocationManager = (LocationManager)getSystemService(LOCATION_SERVICE);
// Verifichiamo se il GPS è abilitato altrimenti avvisiamo l'utente
if(myLocationManager.isProviderEnabled("gps")) {
try {
Location loc = myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(loc.getLatitude(), loc.getLongitude()), calculateZoomLevel(nMetriDiametroVia)));
} catch (NullPointerException e) {
}
//Register for location updates using a Criteria, and a callback on the specified looper thread.
myLocationManager.requestLocationUpdates(
0L, //minTime
0.0f, //minDistance
myCriteria, //criteria
this, //listener
null); //looper
//Replaces the location source of the my-location layer.
map.setLocationSource(this);
}
//myLocationManager.getProviders(true);
}
public static double getRound(double x, int digits){
double powerOfTen = Math.pow(10, digits);
return (Math.round(x * powerOfTen) / powerOfTen);
}
/**
* Permette di iniziare la ricerca
*
* @param button
* Riferimento al button
*/
public void searchPlace(View button) {
hideSoftInput();
Thread searchThread = new Thread("SearchThread") {
@Override
public void run() {
// Otteniamo il messaggio
Message message = mapHandler.obtainMessage();
// Utilizziamo il Geocoder per fare la ricerca
try {
List<Address> risultati = geocoder.getFromLocationName(inputName.getText().toString().trim(), 1);
// Se c'e' qualcosa lo notifichiamo
if (risultati != null && risultati.size() > 0) {
message.obj = risultati.get(0);
mapHandler.sendMessage(message);
} else {
runOnUiThread(new Runnable() {
public void run() {
Utils.msg(CercaPuntoVendita.this, "Nessun risultato trovato");
}
});
}
} catch (IOException e) {
// Non facciamo nulla ma arriva il messaggio vuoto
mapHandler.sendEmptyMessage(MAP_MESSAGE_ID);
} finally {
dismissDialog(PROGRESS_DIALOG_ID);
}
}
};
// Visualizziamo la progressDialog
showDialog(PROGRESS_DIALOG_ID);
// Facciamo partire il Thread
searchThread.start();
}
private final Handler mapHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
// Si ottengono le informazioni se presenti sulla posizione
if (msg != null && msg.obj != null) {
// Estraiamo le informazioni di posizione
try {
Address address = (Address)msg.obj;
Log.d("CercaPuntoVendita.this", "" + address.getLocality());
GeoPoint pointToGo = new GeoPoint((int)(address.getLatitude()*1000000),(int)(address.getLongitude()*1000000));
float dZoom = 0;
if (address.getLocality().equalsIgnoreCase(inputName.getText().toString().trim())) {
// se la locality è uguale alla stringa di ricerca, si tratta di una citta'
dZoom = calculateZoomLevel(nMetriDiametroCitta);
} else {
dZoom = calculateZoomLevel(nMetriDiametroVia);
}
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(address.getLatitude(), address.getLongitude()), dZoom));
} catch (NullPointerException ex) {
Utils.msg(CercaPuntoVendita.this, "Nessun risultato trovato");
Log.w("Punti Vendita - Cerca", (ex.getMessage() == null)?"address = null":ex.getMessage());
}
} else {
Utils.msg(CercaPuntoVendita.this, "Nessun risultato trovato");
}
Log.i("GEOCODER", "" + msg);
if (msg != null) {
Log.i("GEOCODER", "" + msg.obj);
}
}
};
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case PROGRESS_DIALOG_ID:
ProgressDialog progressDialog = new ProgressDialog(this, ProgressDialog.STYLE_SPINNER);
progressDialog.setIndeterminate(true);
progressDialog.setTitle("Cerca Punti Vendita");
progressDialog.setMessage("Cercando...");
return progressDialog;
default:
return null;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Menù di gestione modalità di visualizzazione che, per renderle checkable le inseriamo in un sottomenu
SubMenu mapSubMenu = menu.addSubMenu("Modalità Mappa");
mapSubMenu.setIcon(android.R.drawable.ic_menu_mapmode);
int firstItem = Menu.FIRST;
MenuItem trafficItem = mapSubMenu.add(1, firstItem, firstItem, "Traffic");
trafficItem.setCheckable(true);
trafficItem.setChecked(false);
MenuItem satelliteItem = mapSubMenu.add(1, firstItem + 1, firstItem + 1, "Satellite");
satelliteItem.setCheckable(true);
trafficItem.setChecked(false);
// Visualizziamo il menu
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Modifichiamo lo stato di quella selezionata
item.setChecked(!item.isChecked());
// Abilitiamo o meno l'opzione relativa
switch (item.getItemId()) {
case Menu.FIRST:
map.setTrafficEnabled(item.isChecked());
break;
case Menu.FIRST + 1:
if (item.isChecked())
map.setMapType(MAP_TYPE_SATELLITE);
else
map.setMapType(MAP_TYPE_NORMAL);
break;
}
return super.onOptionsItemSelected(item);
}
protected boolean isRouteDisplayed() {
return false;
}
private void hideSoftInput() {
InputMethodManager inputManager = (InputMethodManager) CercaPuntoVendita.this.getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(CercaPuntoVendita.this.getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
}
public boolean onMarkerClick(Marker mrk) {
final ProgressDialog progressDialog = ProgressDialog.show(ctx, "", "Caricamento in corso.\nAttendere prego...");
final String sSnippet = mrk.getSnippet();
new Thread() {
@Override
public void run() {
try {
sleep(100);
} catch (Exception e) {
e.printStackTrace();
}
Intent intent = new Intent(ctx, PuntoVenditaDett.class);
intent.putExtra("myPdvId", sSnippet);
ctx.startActivity(intent);
progressDialog.dismiss();
}
}.start();
return true;
}
private void setUpMap() {
// Gestiamo gli Overlay
Drawable starImg = getResources().getDrawable(R.drawable.logominicrai);
if (overlays == null)
overlays = new PuntiVendita(starImg, this);
map.setOnMarkerClickListener(this);
for (int i=0; i < overlays.size(); i++) {
LatLng llPunto = new LatLng(overlays.getItem(i).getPoint().getLatitudeE6()/1E6, overlays.getItem(i).getPoint().getLongitudeE6()/1E6);
map.addMarker(new MarkerOptions()
.position(llPunto)
//.title(name)
.snippet(overlays.getItem(i).getSnippet())
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.logominicrai)));
}
}
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (map == null) {
// Try to obtain the map from the SupportMapFragment.
map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
// Check if we were successful in obtaining the map.
if (map != null) {
setUpMap();
}
}
}
public void onLocationChanged(Location location) {
if (myLocationListener != null) {
myLocationListener.onLocationChanged(location);
LatLng latlng = new LatLng(location.getLatitude(), location.getLongitude());
map.animateCamera(CameraUpdateFactory.newLatLng(latlng));
}
}
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
public void activate(OnLocationChangedListener listener) {
myLocationListener = listener;
}
public void deactivate() {
myLocationListener = null;
}
}
显现：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.gmaps"
android:versionCode="2"
android:versionName="2" >
<uses-sdk android:minSdkVersion="9" />
<!-- Google Maps API V2 -->
<permission
android:name="com.example.gmaps.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission android:name="com.example.gmaps.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@drawable/icon"
android:label="@string/app_name" >
<activity
android:name="com.fedrasoft.craiinforma.App"
android:configChanges="orientation|keyboardHidden|keyboard"
android:screenOrientation="portrait"
android:launchMode="singleTask" >
<!-- android:alwaysRetainTaskState="true" -->
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.fedrasoft.craiinforma.CercaPuntoVendita"
android:label="@string/title_activity_cerca_punto_vendita"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="CercaPuntoVendita" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<uses-library android:name="com.google.android.maps" />
<!-- Google Maps API V2 -->
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="my key" />
</application>
</manifest>