android-mapview

问题 I've been looking for a while to find a good tutorial with code example for a MapView in Fragment for ICS. Anyone have any links? 回答1: Here is a book's sample application showing how to have a MapView in a Fragment in an API Level 11+ app. It's mostly just a MapActivity . Here are the key bits of the fragment that loads the MapView : public class MapFragment extends Fragment { private MapView map=null; private MyLocationOverlay me=null; @Override public View onCreateView(LayoutInflater

问题 This is a tricky question, been banging my head for a day, please help. I use Google Maps Apis to get the shortest driving distance and its routes, points, etc between 2 GeoPoints that I provide, see code below private JSONObject GetDistance(String src, String dest) throws Exception { StringBuilder urlString = new StringBuilder(); urlString.append("http://maps.googleapis.com/maps/api/directions/json?"); urlString.append("origin=");// from urlString.append(src); urlString.append("&destination=

问题 I'm developing a android app with google maps. Currently I'm able to view the map inside my app, but I don't know how to view the current location on the app. Here is my code: public class MapsFragment extends Fragment{ MapView m; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // inflat and return the layout View v = inflater.inflate(R.layout.map_near_me, container, false); m = (MapView) v.findViewById(R.id.map); m.onCreate

问题 Say I have mapview control in my Android app. If I know a landmark exists at a certain latitude and longitude, how can I determine if that landmark is currently viewable on the user's screen? Is there a method for getting the coordinates for the top left and bottom right corners of the visible area? 回答1: You can project GeoPoint to Point and check if it is box (0, screen width) by (0, screen height) See: https://developer.android.com/reference/com/google/android/gms/maps/Projection.html 回答2:

问题 I am not sure whether I should be using MapView or stick to using a MapFragment . My application is an app that finds the nearest set of places that are closest to you. I want to be able to add locations, display details of a marker when I press a marker and when the user moves along the map I want to be able to get the coordinates of the center of the map and display the nearest locations within a defined radius. Would I be at a disadvantage if I continue to use MapFragments or should I

问题 I've poured over the docs and haven't been able to figure this out. Is it even possible? Please see this 回答1: It looks like the correct mechanism to do this is to extend MyLocationOverlay then override the drawMyLocation() protected method. The following uses an arrow to show where "you" are and which way "you" are pointing: package com.example; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android

问题 02-18 00:02:08.432: ERROR/PackageManager(57): Package com.example.brown requires unavailable shared library com.google.android.maps; failing! I got this exception in logcat. Can anyone guide me? 回答1: As CommonsWare said, your emulator is missing the library. The Google Maps Library's documentation's Overview page has info on how to create the right kind of virtual device for the emulator. The gist is: Launch the AVD Manager by using the android command without any options. If you are

问题 Hi i need to cal an event at onchangelocation(), by comparing current latitude and longitude with some saved latitude and longitude but i m getting an error. eclipse is not recognizing key word distance, and for correction error it is giving hint to crate method "distance" having 4 parameter ... how to fix it??? or some other way to do same work??? thanks and regards. code is attached below @Override public void onLocationChanged(Location location) { double currentLat=location.getLatitude();

问题 When using Google Maps Android API V2 I'm following the Google Play Services setup documentation to make a check to ensure that Google Play Services are installed, using the following code in my main Activity: @Override public void onResume() { checkGooglePlayServicesAvailability(); super.onResume(); } public void checkGooglePlayServicesAvailability() { int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this); if(resultCode != ConnectionResult.SUCCESS) { Dialog dialog =

问题 I am new to Android software development and new to this site. I am hoping someone might have some experience with the problem I am having. I've been following the Hello, MapView tutorial in order to not only learn the Android framework, but also the Google Maps library. I've tried my best to implement things exactly as the tutorial has instructed. My problem is that the application does load in my emulator (or even on my phone for that matter), but the map tiles do not load. Searching Google