Add Tag and tipview for Android Google Map

1. Add a new mapoverlay to map. To plot the data point mark and tipview on mapoverlay:

Protected void adjustcacheinmap (final list <cachedata> caches,

Cachedata selectedcache ){
// Create tip View
Final view mtipview = minflater. Inflate (
R. layout. mobile_mc_findcache_result_map_tipview, null );

Mmapcaches. removeallviews ();
Mmapcaches. addview (mtipview );
Mmapcaches. Post (New runnable (){

@ Override
Public void run (){
Mmapcaches. getoverlays (). Clear ();
Mobileresultmapoverlay mapoverlay = new mobileresultmapoverlay (
Mobilefindcacheresultactivity. This, mtipview, null,
Caches, mvibrator, mmapcontroller );
Mmapcaches. getoverlays (). Add (mapoverlay );
Mmapcaches. getoverlays (). Add (Mlo );
Mmapcaches. invalidate ();
}
});
}

2. assumeresultmapoverlay is as follows:

Package com. MC. yellowbook. Android. Map;

Import java. util. arraylist;
Import java. util. List;

Import Android. App. activity;
Import Android. content. intent;
Import Android. Graphics. Bitmap;
Import Android. Graphics. bitmapfactory;
Import Android. Graphics. Canvas;
Import Android. Graphics. matrix;
Import Android. Graphics. Point;
Import Android. OS. vibrator;
Import Android. View. view;
Import Android. widget. imageview;
Import Android. widget. textview;

Import com. Google. Android. Maps. geopoint;
Import com. Google. Android. Maps. mapcontroller;
Import com. Google. Android. Maps. mapview;
Import com. Google. Android. Maps. overlay;
Import com. Google. Android. Maps. projection;
Import com. MC. yellowbook. Android. R;
Import com. MC. yellowbook. Android. App. appconstants;
Import com. MC. yellowbook. Android. App. apputils;
Import com. MC. yellowbook. Android. findcache. mobilefindviewcacheactivity;
Import com. MC. yellowbook. Android. model. businessdata;
Import com. MC. yellowbook. Android. model. cachedata;

Public class mobileresultmapoverlay extends overlay implements
Android. View. View. onclicklistener {
// Offset for tip View
Private Static int tip_position_x_offerset = 12;
Private Static int tip_position_y_offerset = 7;

Private bitmap geopnt = NULL;
Private cachedata selected = NULL;
Private list <cachedata> coll = NULL;
Private list <geopoint> points = NULL;
Private activity;
Private vibrator;
Private mapcontroller;

Private view mtipview;
Private textview mtextmaptipcachename, mtextmaptipbusinessname,
Mtextmaptipdistance;
Private imageview mimgmaptipviewcache, mimgmaptipcachedifficulty,
Mimgmaptipcachesize;

Public assumeresultmapoverlay (activity, view mtipview,
Cachedata selectedcache, list <cachedata> caches, vibrator, mapcontroller ){
Super ();
This. mapcontroller = mapcontroller;
This. vibrator = vibrator;
This. Activity = activity;
This. mtipview = mtipview;
Coll = caches;

If (selectedcache = NULL & caches! = NULL & caches. Size ()! = 0 ){
// Set the first one selected by default
Selected = caches. Get (0 );
}

Points = new arraylist <geopoint> ();
Final list <cachedata> pointslist = new arraylist <cachedata> ();
For (cachedata data: Coll ){
Businessdata P = data. getbusiness ();
If (P = NULL ){
Continue;
}
If (P. getlate6 () = 0 & P. getlone6 () = 0 ){
Continue;
}

Geopoint PNT = new geopoint (P. getlate6 (), P. getlone6 ());
Points. Add (PNT );
Pointslist. Add (data );
}

If (mtipview! = NULL ){
// Get view by ID
Mtextmaptipbusinessname = (textview) mtipview
. Findviewbyid (R. Id. textresultmaptipbusinessname );
Mtextmaptipcachename = (textview) mtipview
. Findviewbyid (R. Id. textresultmaptipcachename );
Mtextmaptipdistance = (textview) mtipview
. Findviewbyid (R. Id. textresultmaptipdistance );
Mimgmaptipviewcache = (imageview) mtipview
. Findviewbyid (R. Id. imgresultmaptipviewcache );
Mimgmaptipcachedifficulty = (imageview) mtipview
. Findviewbyid (R. Id. imgresultmaptipdiff );
Mimgmaptipcachesize = (imageview) mtipview
. Findviewbyid (R. Id. imgresultmaptipsize );

// Set click listener
Mimgmaptipviewcache. setonclicklistener (this );
}

// Get bitmap for point show on Map
Geopnt = bitmapfactory. decoderesource (activity. getresources (),
R. drawable. mc_cache_flag );
}

@ Override
Public Boolean ONTAP (geopoint click, mapview ){

Projection projection = mapview. getprojection ();

Point tappoint = projection. topixels (click, null );

Point mypoint = NULL;
Int idx = 0;
Double min_dis = math. Pow (25.0, 2 );
Cachedata cache = NULL;
For (cachedata data: Coll ){
Businessdata P = data. getbusiness ();
If (P = NULL | (P. getlate6 () = 0 & P. getlone6 () = 0 )){
Continue;
}

Mypoint = projection. topixels (points. Get (idx), null );
Double Dis = math. Pow (tappoint. X-mypoint. X, 2.0)
+ Math. Pow (tappoint. Y-mypoint. Y, 2.0 );
If (DIS <min_dis ){
Min_dis = DIS;
Cache = data;
}
Idx ++;
}

// If (Cache! = NULL ){
If (Cache! = Selected ){
Selected = cache;
// Mtipview. setvisibility (view. Visible );
}
//}

If (selected! = NULL ){
// Move selected cache to map center
Businessdata selectedbusiness = selected. getbusiness ();
Mapcontroller. animateto (New geopoint (selectedbusiness. getlate6 (),
Selectedbusiness. getlone6 ()));
}

Return false;
}

@ Override
Public Boolean draw (canvas, mapview, Boolean shadow,
Long when ){
Projection projection = mapview. getprojection ();
Matrix matrix = new matrix ();

Float scale = 0.7f;
Matrix. postscale (scale, scale );
Int width = geopnt. getwidth ();
Int Height = geopnt. getheight ();
Bitmap newgeopnt = NULL;
Newgeopnt = bitmap. createbitmap (geopnt, 0, 0, width, height, matrix,
True );
Width = newgeopnt. getwidth ();
Height = newgeopnt. getheight ();

// Draw all points
Int idx = 0;
For (cachedata data: Coll ){
Businessdata P = data. getbusiness ();
If (P = NULL | (P. getlate6 () = 0 & P. getlone6 () = 0 )){
Continue;
}

Point point = new point ();
Projection. topixels (points. Get (idx), point );
Canvas. drawbitmap (newgeopnt, point. X-width, point. Y-height,
Null );
Idx ++;
}

// Show tip information
If (selected! = NULL ){
Point point = new point ();
Projection. topixels (New geopoint (selected. getbusiness (). getlate6 (),
Selected. getbusiness (). getlone6 (), point );

// Show the information in the tip.
Mapview. layoutparams Pos = (mapview. layoutparams) mtipview
. Getlayoutparams ();
Geopoint geop = new geopoint (selected. getbusiness (). getlate6 (),
Selected. getbusiness (). getlone6 ());
POs. Point = geop;
POs. x =-width/2 + tip_position_x_offerset;
POs. Y =-height-mtipview. getheight ()/2 + tip_position_y_offerset;
Mtipview. setlayoutparams (POS );

// Set the text
Mtextmaptipbusinessname. settext (selected. getbusiness (). getname ());
Mtextmaptipcachename. settext (selected. gettitle ());
Mtextmaptipdistance. settext (selected. getbusiness (). getonedecimaldistance ());
Mimgmaptipcachedifficulty. setimagelevel (selected. getdifficulty ());
Mimgmaptipcachesize. setimagelevel (selected. getsize ());

Mtipview. setvisibility (view. Visible );
Mtipview. bringtofront ();
} Else {
Mtipview. setvisibility (view. Gone );
}

Return super. Draw (canvas, mapview, shadow, when );
}

@ Override
Public void onclick (view v ){
Apputils. vibrate (vibrator );

If (V = mimgmaptipviewcache ){
// Go to View cache page
Intent I = new intent (activity, mobilefindviewcacheactivity. Class );
I. putextra (appconstants. intent_extra_cache_detail,
Selected );
Activity. startactivity (I );
}
}
}