android-mapview

问题 Hello I am developing a map view I tried to following way I created an "Intent" by clicking on a button]. Added permission and library . I created an overlay item. .My Emulator is targeted as GoogleApi 2.3.3 .My MapView key is obdained and asigned into mapview.xml I am seeing the map with a google logo at bottom and map view controler: here is my code MapView.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout

问题 I've seen other threads here with similar symptoms, but none of the answers solved my problem. I'm following the Google map view tutorial, http://developer.android.com/resources/tutorials/views/hello-mapview.html and following all directions exactly, I keep getting this error .. java.lang.ClassNotFoundException: com.goodintechnology.maps.Mymap in loader dalvik.system.PathClassLoader[/data/app/com.goodintechnology.maps-1.apk] I've started from scratch many times, but everytime, as soon as I

问题 Using Google Maps Android API v2, I can update my marker's position by getting the Marker from a hashMap and then calling: Marker marker = hashMap.get(someId); marker.setTitle("Title"); marker.setSnippet("Snippet"); marker.setPosition(new LatLng(newLatitude, newLongitude)); However, if the marker is selected when this is called, the title and snippet will only update if I click off the marker and reselect it. Is there anyway to tell the map to refresh the data in the marker bubble? 回答1: Call

问题 I am not sure were I went wrong, getting a nullPointerException on using googlemap.setMyLocationEnabled(true) in Google Map v2 example. MainActivity.java File: package com.example.locationgooglemapsv2; import java.io.IOException; import java.util.List; import android.content.Context; import android.location.Address; import android.location.Criteria; import android.location.Geocoder; import android.location.Location; import android.location.LocationListener; import android.location

问题 I need help I'm trying to zoom to mapview by getting users multi touch points (firstly 2 finger touch) I know there is setMultiTouchControls() function but this is not what I want to do. I tried to explain with a picture :) it was easier than writting; The black bold arrows show the fingers' movement directions. The same situation can be considered for opposite directions.(zoom in) 回答1: Finally, In osmdroid 3.0.10 this feature had been implemented. mapView.setBuiltInZoomControls(true);

问题 How can i calculate delta-latitude and delta-longitude values form latitude and longitude values for MapView component in React-Native. Thank You 回答1: If you have an array of coordinates and you want a region that will fit all these points, you can do something like this: const regionContainingPoints = points => { let minLat, maxLat, minLng, maxLng; // init first point (point => { minLat = point.latitude; maxLat = point.latitude; minLng = point.longitude; maxLng = point.longitude; })(points[0

问题 I have an application based on the MapActivity. The application drops ItemizedOverlay items on the map as you start to move about. It has been running with no problems until I dropped it into a Nexus 2.2 phone. I'm running into a weird problem where sometimes when I zoom in/out too fast, or pan too fast, the MapView will go "white" and my Overlay items will get shoved into the upper left hand corner. The only error I've seen in my log is: E/PixelConverter( 4881): Setting singular matrix

问题 I have a relatively simple MapActivity that I'm trying to make display a list of "camps" within a given map region. I've created a custom subclass of OverlayItem called CampOverlayItem, a custom ItemizedOverlay called CampsOverlay that returns CampOverlayItems, and of course a MapActivity subclass that populates the map. I'm pulling the overlay data from a database using an AsyncTask as created in my activity. The AsyncTask is triggered from a ViewTreeObserver.OnGlobalLayoutListener attached

问题 I have a DialogFragment shown as a dialog using dialogFragment.show(this); The content view of this fragment is a ScrollView with a MapView at the bottom. onInterceptTouchEvent is taken care for the ScrollView because of the presence of a MapView . And it works fine when used as a normal fragment. But as a dialog, this is what happens while scrolling. The MapView goes out of the Dialog . EDIT: This didn't work: <RelativeLayout android:layout_width="match_parent" android:layout_height="160dp"

问题 I have a latitude and longitude(GeoPoint) which is the center of map. I want to set zoom level of 4miles distance from latitude and longitude that I have. Thanks in Advance, 回答1: You can use the setzoom()-function to do so. The code below can be found in this example. mc = mapView.getController(); String coordinates[] = {"1.352566007", "103.78921587"}; double lat = Double.parseDouble(coordinates[0]); double lng = Double.parseDouble(coordinates[1]); p = new GeoPoint( (int) (lat * 1E6), (int)