With this component, how can I let the user to select a location (a point)?
I have a form that user needs to feel the address and also I need to send the latitude and longitude to the server.
This is what I have so far and it just shows a map that I can navigate:
<GoogleMap Options="mapOptions" />
#code {
MapOptions mapOptions = new MapOptions()
{
Zoom = 13,
Center = new LatLngLiteral()
{
Lat = ...,
Lng = ...
},
MapTypeId = MapTypeId.Roadmap
};
}
You can use the MapEventList component:
<GoogleMap #ref="#map1" Id="map1" Options="#mapOptions" OnAfterInit="#(async () => await OnAfterInitAsync())">
</GoogleMap>
<input type="checkbox" bind="#DisablePoiInfoWindow" />Disable POI's popup info window
<br>
<MapEventList #ref="#eventList" Events="#_events"></MapEventList>
#code {
private GoogleMap map1;
private MapEventList eventList;
private MapOptions mapOptions;
private List<String> _events = new List<String>();
private bool DisablePoiInfoWindow { get; set; } = false;
protected override void OnInitialized()
{
mapOptions = new MapOptions()
{
Zoom = 13,
Center = new LatLngLiteral()
{
Lat = 13.505892,
Lng = 100.8162
},
MapTypeId = MapTypeId.Roadmap
};
}
private async Task OnAfterInitAsync()
{
await map1.InteropObject.AddListener<MouseEvent>("click", async (e) => await OnClick(e));
}
private async Task OnClick(MouseEvent e)
{
_events.Insert(0, $"Click {e.LatLng}.");
_events = _events.Take(100).ToList();
StateHasChanged();
if (DisablePoiInfoWindow)
{
await e.Stop();
}
}
}
Check the demo https://github.com/rungwiroon/BlazorGoogleMaps/blob/master/ClientSideDemo/Pages/MapEvents.razor
I am using map in my app and added some pins to it.
When I click on pin it display some info.
Now I want to pass the values/info of pins to next page after clicking on pin tooltip.
Here is what I am trying:
Pin pins;
protected async override void OnAppearing()
{
base.OnAppearing();
// workerListVM.DisplayMap();
var employeesDetail = await workerListVM.getdetail();
foreach (var employees in employeesDetail)
{
try
{
map1.MoveToRegion(MapSpan.FromCenterAndRadius(new Position(employees.Latitude, employees.Longitude),Distance.FromMiles(.5)));
var position = new Position(employees.Latitude, employees.Longitude);
pins = new Pin()
{
Type = PinType.Place,
Position = position,
Label = employees.UserName,
Address = employees.City
};
map1.Pins.Add(pins);
pins.Clicked += Pins_Clicked;
}
catch (NullReferenceException) { }
catch (Exception) { }
}
}
private void Pins_Clicked(object sender, EventArgs e)
{
DisplayAlert($"{pins.Label}", $"{pins.Address}", "Ok");
}
But its not working.
Hello i am creating App for iOS and Android. The issue i want to fix that on the load on page i want to display the map with the address. I can get Lat Long successfully but i cannot getting address that i want to display on a label. Below is my code that i am using.
using Plugin.Geolocator;
using Xamarin.Forms.Maps;
private Position _position;
// Map map;
double Lat, Long;
string address = "";
public TestPage()
{
NavigationPage.SetHasNavigationBar(this, false);
InitializeComponent();
GetPosition();
if (_position != null)
{
Lat = _position.Latitude;
Long = _position.Longitude;
}
//Task<String> str = GetAddress();
map.MoveToRegion(MapSpan.FromCenterAndRadius(new Position(Lat, Long), Distance.FromMiles(1)));
var position = new Position(Lat, Long);
var pin = new Pin
{
Type = PinType.Place,
Position = position,
Label = ""
};
map.Pins.Add(pin);
var zoomLevel = 17.83;
var latlongdegrees = 360 / (Math.Pow(2, zoomLevel));
map.MoveToRegion(new MapSpan(position, latlongdegrees, latlongdegrees));
LabelTime.Text = DateTime.Now.ToString("hh:mm tt") + " " + DateTime.Now.ToString("MM/dd/yyyy");
string recentAddress = address; // trying to get adderss for location
}
GetPosition()
public async void GetPosition()
{
Plugin.Geolocator.Abstractions.Position position = null;
try
{
var locator = CrossGeolocator.Current;
locator.DesiredAccuracy = 100.0;
position = await locator.GetLastKnownLocationAsync();
if (position != null)
{
_position = new Position(position.Latitude, position.Longitude);
//got a cahched position, so let's use it.
return;
}
if (!locator.IsGeolocationAvailable || !locator.IsGeolocationEnabled)
{
//not available or enabled
return;
}
position = await locator.GetPositionAsync(TimeSpan.FromSeconds(10), null, true);
}
catch (Exception ex)
{
// error(ex.Message, Convert.ToString(ex.InnerException), ex.Source, ex.StackTrace);
}
_position = new Position(position.Latitude, position.Longitude);
if (position == null)
return;
}
GetAddress()
public async Task<String> GetAddress()
{
// string Addrsss = "";
try
{
Geocoder geoCoder = new Geocoder();
if (_position != null)
{
var possibleAddresses = await geoCoder.GetAddressesForPositionAsync(_position);
await Task.Delay(2000);
foreach (var a in possibleAddresses)
{
address += a + "\n";
}
}
return address;
}
catch (Exception ex)
{
throw;
}
}
I also try to get the current address on OnAppearing()
protected override void OnAppearing()
{
this.Appearing += TestPage_Appearing; //Subscribe to event
base.OnAppearing();
}
protected async void TestPage_Appearing(object sender, EventArgs args)
{
GetPosition();
address= await GetAddress();
string a = address;
this.Appearing -= TestPage_Appearing; //Unsubscribe
}
You can get placemark address using Xamarin.Essentials as below,
protected async override void OnAppearing()
{
await GetAddress();
}
private async Task GetAddress()
{
var lat = 47.673988;
var lon = -122.121513;
var placemarks = await Geocoding.GetPlacemarksAsync(lat, lon);
var placemark = placemarks?.FirstOrDefault();
if (placemark != null)
{
var geocodeAddress =
$"AdminArea: {placemark.AdminArea}\n" +
$"CountryCode: {placemark.CountryCode}\n" +
$"CountryName: {placemark.CountryName}\n" +
$"FeatureName: {placemark.FeatureName}\n" +
$"Locality: {placemark.Locality}\n" +
$"PostalCode: {placemark.PostalCode}\n" +
$"SubAdminArea: {placemark.SubAdminArea}\n" +
$"SubLocality: {placemark.SubLocality}\n" +
$"SubThoroughfare: {placemark.SubThoroughfare}\n" +
$"Thoroughfare: {placemark.Thoroughfare}\n";
Console.WriteLine(geocodeAddress);
}
}
refer this link for in depth details
Also this one for detailed implementation
So hi to #ll this is my fist post/question on stackoverflow :D
I need help # following :
So i integrated the Facebook SDk sucessfully in my game but i´dont get the profile picture working ...
So i tryied it oldshool on Facebooks "Tutotial" Way and followed all steps to implement login functions and so on ...
I´ve downloaded the "friendsmash_start" Sample and implemented that Stuff ...
My Main Problem is i don´t get ahead with this problem and can´t figure out what i´m doing wrong so i´m hoping for help.
Here´s the complete Code from the MainMenu Script from the sample which is the only i´ve changed ... like in the tutorial ...
Unity shows me this Error -> "The name 'LoadPicture' does not exist in the current context ... so the errors are on these two parts of code :
"LoadPicture(Util.GetPictureURL("me", 128, 128), MyPictureCallback);" in the "OnLoggedIn" function
"LoadPicture(Util.GetPictureURL("me", 128, 128), MyPictureCallback);" in the "MyPictureCallback" function
I don´t understand it cause i searched myself in the script for this function "LoadPicture" and find nothing that was ... according to the "Tutorial" of facebook here :
https://developers.facebook.com/docs/games/unity/unity-tutorial?locale=de_DE
the function should be there cause they wrote there :
"Take a look at the LoadPicture method also in MainMenu.cs to see how we use the Unity WWW class to load the image returned by the graph API."
But i can´t find it :(
HOPE SOMEONE CAN HELP ME I DON´T GET IT ...
Have that problem unfortunately very long time ... thats enoying. :(
HERE`S THE FULL CODE OF MAINMENU.CS :
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using Facebook.MiniJSON;
using System;
public class MainMenu : MonoBehaviour
{
// Inspector tunable members //
public Texture ButtonTexture;
public Texture PlayTexture; // Texture for main menu button icons
public Texture BragTexture;
public Texture ChallengeTexture;
public Texture StoreTexture;
public Texture FullScreenTexture;
public Texture FullScreenActiveTexture;
public Texture ResourcesTexture;
public Vector2 CanvasSize; // size of window on canvas
public Rect LoginButtonRect; // Position of login button
public Vector2 ResourcePos; // position of resource indicators (not used yet)
public Vector2 ButtonStartPos; // position of first button in main menu
public float ButtonScale; // size of main menu buttons
public float ButtonYGap; // gap between buttons in main menu
public float ChallengeDisplayTime; // Number of seconds the request sent message is displayed for
public Vector2 ButtonLogoOffset; // Offset determining positioning of logo on buttons
public float TournamentStep; // Spacing between tournament entries
public float MouseScrollStep = 40; // Amount score table moves with each step of the mouse wheel
public PaymentDialog paymentDialog;
public GUISkin MenuSkin;
public int CoinBalance;
public int NumLives;
public int NumBombs;
public Texture[] CelebTextures;
public string [] CelebNames;
// Private members //
private static MainMenu instance;
private static List<object> friends = null;
private static Dictionary<string, string> profile = null;
private static List<object> scores = null;
private static Dictionary<string, Texture> friendImages = new Dictionary<string, Texture>();
private Vector2 scrollPosition = Vector2.zero;
private bool haveUserPicture = false;
private float tournamentLength = 0;
private int tournamentWidth = 512;
private int mainMenuLevel = 0; // Level index of main menu
private string popupMessage;
private float popupTime;
private float popupDuration;
void Awake()
{
Util.Log("Awake");
paymentDialog = ((PaymentDialog)(GetComponent("PaymentDialog")));
// allow only one instance of the Main Menu
if (instance != null && instance != this)
{
Destroy(gameObject);
return;
}
#if UNITY_WEBPLAYER
// Execute javascript in iframe to keep the player centred
string javaScript = #"
window.onresize = function() {
var unity = UnityObject2.instances[0].getUnity();
var unityDiv = document.getElementById(""unityPlayerEmbed"");
var width = window.innerWidth;
var height = window.innerHeight;
var appWidth = " + CanvasSize.x + #";
var appHeight = " + CanvasSize.y + #";
unity.style.width = appWidth + ""px"";
unity.style.height = appHeight + ""px"";
unityDiv.style.marginLeft = (width - appWidth)/2 + ""px"";
unityDiv.style.marginTop = (height - appHeight)/2 + ""px"";
unityDiv.style.marginRight = (width - appWidth)/2 + ""px"";
unityDiv.style.marginBottom = (height - appHeight)/2 + ""px"";
}
window.onresize(); // force it to resize now";
Application.ExternalCall(javaScript);
#endif
DontDestroyOnLoad(gameObject);
instance = this;
// Initialize FB SDK
FB.Init(SetInit, OnHideUnity);
}
private void SetInit()
{
Util.Log("SetInit");
enabled = true; // "enabled" is a property inherited from MonoBehaviour
if (FB.IsLoggedIn)
{
Util.Log("Already logged in");
OnLoggedIn();
}
}
private void OnHideUnity(bool isGameShown)
{
Util.Log("OnHideUnity");
if (!isGameShown)
{
// pause the game - we will need to hide
Time.timeScale = 0;
}
else
{
// start the game back up - we're getting focus again
Time.timeScale = 1;
}
}
private void QueryScores()
{
FB.API("/app/scores?fields=score,user.limit(20)", Facebook.HttpMethod.GET, ScoresCallback);
}
private int getScoreFromEntry(object obj)
{
Dictionary<string,object> entry = (Dictionary<string,object>) obj;
return Convert.ToInt32(entry["score"]);
}
void ScoresCallback(FBResult result)
{
Util.Log("ScoresCallback");
if (result.Error != null)
{
Util.LogError(result.Error);
return;
}
scores = new List<object>();
List<object> scoresList = Util.DeserializeScores(result.Text);
foreach(object score in scoresList)
{
var entry = (Dictionary<string,object>) score;
var user = (Dictionary<string,object>) entry["user"];
string userId = (string)user["id"];
if (string.Equals(userId,FB.UserId))
{
// This entry is the current player
int playerHighScore = getScoreFromEntry(entry);
Util.Log("Local players score on server is " + playerHighScore);
if (playerHighScore < GameStateManager.Score)
{
Util.Log("Locally overriding with just acquired score: " + GameStateManager.Score);
playerHighScore = GameStateManager.Score;
}
entry["score"] = playerHighScore.ToString();
GameStateManager.HighScore = playerHighScore;
}
scores.Add(entry);
if (!friendImages.ContainsKey(userId))
{
// We don't have this players image yet, request it now
LoadPictureAPI(Util.GetPictureURL(userId, 128, 128),pictureTexture =>
{
if (pictureTexture != null)
{
friendImages.Add(userId, pictureTexture);
}
});
}
}
// Now sort the entries based on score
scores.Sort(delegate(object firstObj,
object secondObj)
{
return -getScoreFromEntry(firstObj).CompareTo(getScoreFromEntry(secondObj));
}
);
}
void OnApplicationFocus( bool hasFocus )
{
Util.Log ("hasFocus " + (hasFocus ? "Y" : "N"));
}
// Convenience function to check if mouse/touch is the tournament area
private bool IsInTournamentArea (Vector2 p)
{
return p.x > Screen.width-tournamentWidth;
}
// Scroll the tournament view by some delta
private void ScrollTournament(float delta)
{
scrollPosition.y += delta;
if (scrollPosition.y > tournamentLength - Screen.height)
scrollPosition.y = tournamentLength - Screen.height;
if (scrollPosition.y < 0)
scrollPosition.y = 0;
}
// variables for keeping track of scrolling
private Vector2 mouseLastPos;
private bool mouseDragging = false;
void Update()
{
if(Input.touches.Length > 0)
{
Touch touch = Input.touches[0];
if (IsInTournamentArea (touch.position) && touch.phase == TouchPhase.Moved)
{
// dragging
ScrollTournament (touch.deltaPosition.y*3);
}
}
if (Input.GetAxis("Mouse ScrollWheel") < 0)
{
ScrollTournament (MouseScrollStep);
}
else if (Input.GetAxis("Mouse ScrollWheel") > 0)
{
ScrollTournament (-MouseScrollStep);
}
if (Input.GetMouseButton(0) && IsInTournamentArea(Input.mousePosition))
{
if (mouseDragging)
{
ScrollTournament (Input.mousePosition.y - mouseLastPos.y);
}
mouseLastPos = Input.mousePosition;
mouseDragging = true;
}
else
mouseDragging = false;
}
// Button drawing logic //
private Vector2 buttonPos; // Keeps track of where we've got to on the screen as we draw buttons
private void BeginButtons()
{
// start drawing buttons at the chosen start position
buttonPos = ButtonStartPos;
}
private bool DrawButton(string text, Texture texture)
{
// draw a single button and update our position
bool result = GUI.Button(new Rect (buttonPos.x,buttonPos.y, ButtonTexture.width * ButtonScale, ButtonTexture.height * ButtonScale),text,MenuSkin.GetStyle("menu_button"));
Util.DrawActualSizeTexture(ButtonLogoOffset*ButtonScale+buttonPos,texture,ButtonScale);
buttonPos.y += ButtonTexture.height*ButtonScale + ButtonYGap;
if (paymentDialog.DialogEnabled)
result = false;
return result;
}
void OnGUI()
{
GUI.skin = MenuSkin;
if (Application.loadedLevel != mainMenuLevel) return; // don't display anything except when in main menu
GUILayout.Box("", MenuSkin.GetStyle("panel_welcome"));
if (!FB.IsLoggedIn)
{
GUI.Label((new Rect(179, 11, 287, 160)), "Login to Facebook", MenuSkin.GetStyle("text_only"));
if (GUI.Button(LoginButtonRect, "", MenuSkin.GetStyle("button_login")))
{
FB.Login("email,publish_actions", LoginCallback);
}
}
if (FB.IsLoggedIn)
{
string panelText = "Welcome ";
panelText += (!string.IsNullOrEmpty(GameStateManager.Username)) ? string.Format("{0}!", GameStateManager.Username) : "Smasher!";
if (GameStateManager.UserTexture != null)
GUI.DrawTexture( (new Rect(8,10, 150, 150)), GameStateManager.UserTexture);
GUI.Label( (new Rect(179 , 11, 287, 160)), panelText, MenuSkin.GetStyle("text_only"));
}
string subTitle = "Let's smash some friends!";
if (GameStateManager.Score > 0)
{
subTitle = "Score: " + GameStateManager.Score.ToString();
}
if (!string.IsNullOrEmpty(subTitle))
{
GUI.Label( (new Rect(132, 28, 400, 160)), subTitle, MenuSkin.GetStyle("sub_title"));
}
BeginButtons();
if (DrawButton("Play",PlayTexture))
{
onPlayClicked();
}
if (FB.IsLoggedIn)
{
// Draw resources bar
Util.DrawActualSizeTexture(ResourcePos,ResourcesTexture);
Util.DrawSimpleText(ResourcePos + new Vector2(47,5) ,MenuSkin.GetStyle("resources_text"),string.Format("{0}",CoinBalance));
Util.DrawSimpleText(ResourcePos + new Vector2(137,5) ,MenuSkin.GetStyle("resources_text"),string.Format("{0}",NumBombs));
Util.DrawSimpleText(ResourcePos + new Vector2(227,5) ,MenuSkin.GetStyle("resources_text"),string.Format("{0}",NumLives));
}
#if UNITY_WEBPLAYER
if (Screen.fullScreen)
{
if (DrawButton("Full Screen",FullScreenActiveTexture))
SetFullscreenMode(false);
}
else
{
if (DrawButton("Full Screen",FullScreenTexture))
SetFullscreenMode(true);
}
#endif
DrawPopupMessage();
}
public void AddPopupMessage(string message, float duration)
{
popupMessage = message;
popupTime = Time.realtimeSinceStartup;
popupDuration = duration;
}
public void DrawPopupMessage()
{
if (popupTime != 0 && popupTime + popupDuration > Time.realtimeSinceStartup)
{
// Show message that we sent a request
Rect PopupRect = new Rect();
PopupRect.width = 800;
PopupRect.height = 100;
PopupRect.x = Screen.width / 2 - PopupRect.width / 2;
PopupRect.y = Screen.height / 2 - PopupRect.height / 2;
GUI.Box(PopupRect,"",MenuSkin.GetStyle("box"));
GUI.Label(PopupRect, popupMessage, MenuSkin.GetStyle("centred_text"));
}
}
void TournamentGui()
{
GUILayout.BeginArea(new Rect((Screen.width - 450),0,450,Screen.height));
// Title box
GUI.Box (new Rect(0, - scrollPosition.y, 100,200), "", MenuSkin.GetStyle("tournament_bar"));
GUI.Label (new Rect(121 , - scrollPosition.y, 100,200), "Tournament", MenuSkin.GetStyle("heading"));
Rect boxRect = new Rect();
if(scores != null)
{
var x = 0;
foreach(object scoreEntry in scores)
{
Dictionary<string,object> entry = (Dictionary<string,object>) scoreEntry;
Dictionary<string,object> user = (Dictionary<string,object>) entry["user"];
string name = ((string) user["name"]).Split(new char[]{' '})[0] + "\n";
string score = "Smashed: " + entry["score"];
boxRect = new Rect(0, 121+(TournamentStep*x)-scrollPosition.y , 100,128);
// Background box
GUI.Box(boxRect,"",MenuSkin.GetStyle("tournament_entry"));
// Text
GUI.Label (new Rect(24, 136 + (TournamentStep * x) - scrollPosition.y, 100,128), (x+1)+".", MenuSkin.GetStyle("tournament_position")); // Rank e.g. "1.""
GUI.Label (new Rect(250,145 + (TournamentStep * x) - scrollPosition.y, 300,100), name, MenuSkin.GetStyle("tournament_name")); // name
GUI.Label (new Rect(250,193 + (TournamentStep * x) - scrollPosition.y, 300,50), score, MenuSkin.GetStyle("tournament_score")); // score
Texture picture;
if (friendImages.TryGetValue((string) user["id"], out picture))
{
GUI.DrawTexture(new Rect(118,128+(TournamentStep*x)-scrollPosition.y,115,115), picture); // Profile picture
}
x++;
}
}
else GUI.Label (new Rect(180,270,512,200), "Loading...", MenuSkin.GetStyle("text_only"));
// Record length so we know how far we can scroll to
tournamentLength = boxRect.y + boxRect.height + scrollPosition.y;
GUILayout.EndArea();
}
// React to menu buttons //
private void onPlayClicked()
{
Util.Log("onPlayClicked");
if (friends != null && friends.Count > 0)
{
// Select a random friend and get their picture
Dictionary<string, string> friend = Util.RandomFriend(friends);
GameStateManager.FriendName = friend["first_name"];
GameStateManager.FriendID = friend["id"];
GameStateManager.CelebFriend = -1;
LoadPictureURL(friend["image_url"],FriendPictureCallback);
}
else
{
//We can't access friends
GameStateManager.CelebFriend = UnityEngine.Random.Range(0,CelebTextures.Length - 1);
GameStateManager.FriendName = CelebNames[GameStateManager.CelebFriend];
}
// Start the main game
Application.LoadLevel("GameStage");
GameStateManager.Instance.StartGame();
}
public void SetFullscreenMode (bool on)
{
if (on)
{
Screen.SetResolution (Screen.currentResolution.width, Screen.currentResolution.height, true);
}
else
{
Screen.SetResolution ((int)CanvasSize.x, (int)CanvasSize.y, false);
}
}
public static void FriendPictureCallback(Texture texture)
{
GameStateManager.FriendTexture = texture;
}
delegate void LoadPictureCallback (Texture texture);
IEnumerator LoadPictureEnumerator(string url, LoadPictureCallback callback)
{
WWW www = new WWW(url);
yield return www;
callback(www.texture);
}
void LoadPictureAPI (string url, LoadPictureCallback callback)
{
FB.API(url,Facebook.HttpMethod.GET,result =>
{
if (result.Error != null)
{
Util.LogError(result.Error);
return;
}
var imageUrl = Util.DeserializePictureURLString(result.Text);
StartCoroutine(LoadPictureEnumerator(imageUrl,callback));
});
}
void LoadPictureURL (string url, LoadPictureCallback callback)
{
StartCoroutine(LoadPictureEnumerator(url,callback));
}
void LoginCallback(FBResult result)
{
Util.Log("LoginCallback");
if (FB.IsLoggedIn)
{
OnLoggedIn();
}
}
void OnLoggedIn()
{
Util.Log("Logged in. ID: " + FB.UserId);
// Reqest player info and profile picture
FB.API("/me?fields=id,first_name,friends.limit(100).fields(first_name,id)", Facebook.HttpMethod.GET, APICallback);
LoadPicture(Util.GetPictureURL("me", 128, 128), MyPictureCallback);
}
void APICallback(FBResult result)
{
Util.Log("APICallback");
if (result.Error != null)
{
Util.LogError(result.Error);
// Let's just try again
FB.API("/me?fields=id,first_name,friends.limit(100).fields(first_name,id)", Facebook.HttpMethod.GET, APICallback);
return;
}
profile = Util.DeserializeJSONProfile(result.Text);
GameStateManager.Username = profile["first_name"];
friends = Util.DeserializeJSONFriends(result.Text);
}
void MyPictureCallback(Texture texture)
{
Util.Log("MyPictureCallback");
if (texture == null)
{
// Let's just try again
LoadPicture(Util.GetPictureURL("me", 128, 128), MyPictureCallback);
return;`
}
GameStateManager.UserTexture = texture;
}
}
change the word "LoadPicture" for "LoadPictureAPI".
For reference see:
https://github.com/fbsamples/friendsmash-unity/blob/master/friendsmash_payments_start/Assets/Scripts/MainMenu.cs
I'm doing app Google Map android.
I want draw a short path betweent 2 point in map.
But I don't know How do i need?
Please help me .Thank you very much.
new class util.java
public class Util {
private DataBaseHelper dbHelper;
private GeoFencApplicationDataset Dataset;
private int getId;
public static boolean checkConnection(Context mContext) {
NetworkInfo info = ((ConnectivityManager) mContext
.getSystemService(Context.CONNECTIVITY_SERVICE))
.getActiveNetworkInfo();
if (info == null || !info.isConnected()) {
return false;
}
if (info.isRoaming()) {
return true;
}
return true;
}
public void DrawPath(Context c, GeoPoint src, GeoPoint dest, int color,
MapView mMapView01) {
Dataset = (GeoFencApplicationDataset) c.getApplicationContext();
dbHelper = Dataset.getDbHelper();
StringBuilder urlString = new StringBuilder();
urlString.append("http://maps.google.com/maps?f=d&hl=en");
urlString.append("&saddr=");// from
urlString.append(Double.toString((double) src.getLatitudeE6() / 1.0E6));
urlString.append(",");
urlString
.append(Double.toString((double) src.getLongitudeE6() / 1.0E6));
urlString.append("&daddr=");// to
urlString
.append(Double.toString((double) dest.getLatitudeE6() / 1.0E6));
urlString.append(",");
urlString
.append(Double.toString((double) dest.getLongitudeE6() / 1.0E6));
urlString.append("&ie=UTF8&0&om=0&output=kml");
Log.d("xxx", "URL=" + urlString.toString());
Document doc = null;
HttpURLConnection urlConnection = null;
URL url = null;
try {
url = new URL(urlString.toString());
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.connect();
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.parse(urlConnection.getInputStream());
if (doc.getElementsByTagName("GeometryCollection").getLength() > 0) {
final String path = doc.getElementsByTagName("GeometryCollection")
.item(0).getFirstChild().getFirstChild()
.getFirstChild().getNodeValue();
final String[] pairs = path.split(" ");
String[] lngLat = pairs[0].split(",");
final GeoPoint startGP = new GeoPoint(
(int) (Double.parseDouble(lngLat[1]) * 1E6),
(int) (Double.parseDouble(lngLat[0]) * 1E6));
mMapView01.getOverlays().add(
new PathOverLay(startGP, startGP, 1));
GeoPoint gp1;
GeoPoint gp2 = startGP;
for (int i = 1; i < pairs.length; i++) {
lngLat = pairs[i].split(",");
gp1 = gp2;
gp2 = new GeoPoint(
(int) (Double.parseDouble(lngLat[1]) * 1E6),
(int) (Double.parseDouble(lngLat[0]) * 1E6));
mMapView01.getOverlays().add(
new PathOverLay(gp1, gp2, 2, color));
if (getId != 0) {
dbHelper.insertTempLatLong(lngLat[1], lngLat[0], getId);
}
Log.d("xxx", "pair:" + pairs[i]);
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
}
}
public double[] getLocation(Context c) {
Criteria criteria;
String provider;
LocationManager locManager = (LocationManager) c
.getSystemService(Context.LOCATION_SERVICE);
criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAccuracy(Criteria.ACCURACY_COARSE);
provider = locManager.getBestProvider(criteria, true);
double[] loca = new double[2];
// For Latitude & Longitude
Location location = locManager.getLastKnownLocation(provider);
if (location != null) {
loca[0] = location.getLatitude();
loca[1] = location.getLongitude();
} else {
loca[0] = 0.0;
loca[1] = 0.0;
}
return loca;
}
public void setId(int id) {
// TODO Auto-generated method stub
getId = id;
}
}
new class PathOverLay.java
public class PathOverLay extends Overlay {
private GeoPoint gp1;
private GeoPoint gp2;
private int mRadius = 6;
private int mode = 0;
private int defaultColor;
private String text = "";
private Bitmap img = null;
public PathOverLay(GeoPoint gp1, GeoPoint gp2, int mode) // GeoPoint is a
// int. (6E)
{
this.gp1 = gp1;
this.gp2 = gp2;
this.mode = mode;
defaultColor = 999; // no defaultColor
}
public PathOverLay(GeoPoint gp1, GeoPoint gp2, int mode, int defaultColor) {
this.gp1 = gp1;
this.gp2 = gp2;
this.mode = mode;
this.defaultColor = defaultColor;
}
public void setText(String t) {
this.text = t;
}
public void setBitmap(Bitmap bitmap) {
this.img = bitmap;
}
public int getMode() {
return mode;
}
#Override
public boolean draw(Canvas canvas, MapView mapView, boolean shadow,
long when) {
Projection projection = mapView.getProjection();
if (shadow == false) {
Paint paint = new Paint();
paint.setAntiAlias(true);
Point point = new Point();
projection.toPixels(gp1, point);
// mode=1：start
if (mode == 1) {
if (defaultColor == 999)
paint.setColor(Color.BLUE);
else
paint.setColor(defaultColor);
// RectF oval = new RectF(point.x - mRadius, point.y - mRadius,
// point.x + mRadius, point.y + mRadius);
RectF oval = new RectF(point.x - mRadius, point.y - mRadius,
point.x + mRadius, point.y + mRadius);
// start point
canvas.drawOval(oval, paint);
}
// mode=2：path
else if (mode == 2) {
if (defaultColor == 999)
paint.setColor(Color.RED);
else
paint.setColor(defaultColor);
Point point2 = new Point();
projection.toPixels(gp2, point2);
paint.setStrokeWidth(5);
paint.setAlpha(70);
canvas.drawLine(point.x, point.y, point2.x, point2.y, paint);
}
/* mode=3：end */
else if (mode == 3) {
/* the last path */
if (defaultColor == 999)
paint.setColor(Color.GREEN);
else
paint.setColor(defaultColor);
Point point2 = new Point();
projection.toPixels(gp2, point2);
paint.setStrokeWidth(5);
paint.setAlpha(120);
canvas.drawLine(point.x, point.y, point2.x, point2.y, paint);
RectF oval = new RectF(point2.x - mRadius, point2.y - mRadius,
point2.x + mRadius, point2.y + mRadius);
/* end point */
paint.setAlpha(120);
canvas.drawOval(oval, paint);
}
}
return super.draw(canvas, mapView, shadow, when);
}
// Read more:
// http://csie-tw.blogspot.com/2009/06/android-driving-direction-route-path.html#ixzz1hte9kGoi
}
final call method ...
util = new Util();
mapOverlays = mapView.getOverlays();
util = new Util();
util.setId(id);
GeoPoint srcGeoPoint = new GeoPoint((int) (destLat * 1E6),
(int) (destLong * 1E6));
GeoPoint destGeoPoint = new GeoPoint((int) (srcLat * 1E6),
(int) (srcLong * 1E6));
progrDialog = ProgressDialog.show(AddFenceActivity.this,
"", "Please Wait..", true);
mapView.getOverlays().add(
new PathOverLay(srcGeoPoint,destGeoPoint, 2,Color.RED));
util.DrawPath(AddFenceActivity.this, srcGeoPoint,
destGeoPoint, Color.RED, mapView);
mapView.getController().animateTo(srcGeoPoint);
public class MapOverLayItem extends ItemizedOverlay<OverlayItem> {
private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
Context mContext;
public MapOverLayItem(Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
// TODO Auto-generated constructor stub
}
public void addOverlay(OverlayItem overlay) {
mOverlays.add(overlay);
populate();
}
#Override
protected OverlayItem createItem(int i) {
// TODO Auto-generated method stub
return mOverlays.get(i);
}
#Override
public int size() {
// TODO Auto-generated method stub
return mOverlays.size();
}
public MapOverLayItem(Drawable defaultMarker, Context context) {
super(defaultMarker);
mContext = context;
}
}