我想使用谷歌地图v2使用gps或互联网加载地图，我可以只使用互联网。
当我将我的应用程序连接到互联网时，地图已成功加载，但如果我只使用gps，即使我已经在我的手机和应用程序中激活gps，地图也不会显示。
这是我的代码，首先我得到我的位置然后我加载mapp
setContentView(R.layout.google_map_layout);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
boolean enabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (!enabled) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
} else {
Criteria criteria = new Criteria();
provider = locationManager.getBestProvider(criteria, false);
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
Toast.makeText(RestaurantsNearBy.this,
location.getLatitude() + "", Toast.LENGTH_LONG).show();
LatLng currentLocation = new LatLng(location.getLatitude(),
location.getLongitude());
new getRestaurantNearBy().execute(currentLocation.latitude,
currentLocation.longitude);
map = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
map.setInfoWindowAdapter(new InfoWindowAdapter() {
private final View window = getLayoutInflater().inflate(
R.layout.restaurant_marker, null);
@Override
public View getInfoWindow(Marker marker) {
return null;
}
@Override
public View getInfoContents(Marker marker) {
TextView tv_title = ((TextView) window
.findViewById(R.id.tv_title));
TextView tv_description = ((TextView) window
.findViewById(R.id.tv_description));
ImageView iv_image = ((ImageView) window
.findViewById(R.id.iv_image));
AddressMap oneAddres = markersMap.get(marker);
tv_title.setText(oneAddres.getRestaurant().getName());
tv_description.setText(oneAddres.getDescription());
Restaurant r = markersMap.get(marker).getRestaurant();
if (Restaurant.getRestaurant(r.getID()) != null) {
if (Restaurant.getRestaurant(r.getID()).getImage() != null) {
iv_image.setImageBitmap(Restaurant
.getRestaurant(r.getID()).getImage());
} else {
try {
iv_image.setImageBitmap(r
.getImageFromWebService());
} catch (Exception e) {
iv_image.setImageResource(R.drawable.unknown);
}
}
} else {
iv_image.setImageBitmap(r.getImageFromWebService());
}
return window;
}
});
map.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
@Override
public void onInfoWindowClick(Marker marker) {
final AddressMap oneAddress = markersMap.get(marker);
AlertDialog alertDialog3 = new AlertDialog.Builder(
RestaurantsNearBy.this).create();
alertDialog3.setTitle("Order !");
alertDialog3
.setMessage("Do you want to order from the restaurant "
+ oneAddress.getRestaurant().getName());
alertDialog3.setIcon(R.drawable.more_information);
alertDialog3.setButton("Yes",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
Basket.setRestaurant(oneAddress
.getRestaurant());
dialog.dismiss();
Intent addAddressIntent = new Intent(
RestaurantsNearBy.this,
OrderMeal.class);
startActivity(addAddressIntent);
}
});
alertDialog3.setButton2("No",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.dismiss();
}
});
alertDialog3.show();
}
});
// Move the camera instantly to hamburg with a zoom of 15.
map.moveCamera(CameraUpdateFactory.newLatLngZoom(
currentLocation, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
Log.d("Provider ", provider + " has been selected.");
onLocationChanged(location);
} else {
Toast.makeText(RestaurantsNearBy.this, "Sorry we couldn't define your location",
Toast.LENGTH_SHORT).show();
}
}
答案 0 :(得分：1)
默认情况下，如果未连接wifi或移动连接，则无法正确加载地图数据。 GPS只能让您找到自己的位置。
答案 1 :(得分：1)
你应该使用正确的标签，谷歌地图可以在很多平台上找到，而你对Android版本有疑问，所以至少要添加Android标签。
关于问题：首次加载地图时，Google地图需要有效的互联网连接。 V2在你的SD卡上做了一些不错的缓存（有时也有点过分），允许你以后离线检查已经加载的地图，但原则是：没有有效的互联网连接，没有谷歌地图。
ps：GPS不是互联网连接。