Contact and LocationOverlayItem (extending OverlayItem to set fields
based on a Contact) are custom classes I created for my application,
they're not important to understand my code.
On 28 août, 11:20, Guillaume Perrot <[EMAIL PROTECTED]> wrote:
> Here is a code which is actually working, but with manual draw, you
> can imitate my workaround for now.
> I hope an official answer will come up fast...
>
> /** Map layer displaying contact locations */
> public class LocationOverlay extends
> ItemizedOverlay<LocationOverlayItem>
> {
> /** Contacts with known location */
> private final List<Contact> mContacts;
>
> /*
> * FIXME fields to manually draw items, we don't know how to make
> * ItemizedOverlay actually work
> */
> private Bitmap mBubbleBitmap;
> private Paint mInnerPaint;
> private Paint mBorderPaint;
> private TextPaint mTextPaint;
> private static final int TEXT_OFFSET_X = 10;
> private static final int TEXT_OFFSET_Y = 15;
> private static final int INFO_WINDOW_HEIGHT = 25;
>
> /** Create a new instance */
> public LocationOverlay()
> {
> super(UbikIMApplication.getApplicationResources().getDrawable(
> R.drawable.bubble));
>
> /* Get contacts with location */
> mContacts = new ArrayList<Contact>();
> for (Contact contact : ContactManager.getInstance().getContacts())
> if (contact.getLocation() != null)
> mContacts.add(contact);
>
> /* Populate */
> populate();
>
> /* FIXME manual draw managing relating code */
>
> /* Decompress bubble bitmap */
> mBubbleBitmap = BitmapFactory.decodeResource(UbikIMApplication
> .getApplicationResources(), R.drawable.bubble);
>
> /* Init painter used to draw the inner of the info window */
> mInnerPaint = new Paint();
> mInnerPaint.setARGB(225, 75, 75, 75);
> mInnerPaint.setAntiAlias(true);
>
> /* Init painter used to draw the border of the info window */
> mBorderPaint = new Paint();
> mBorderPaint.setARGB(255, 255, 255, 255);
> mBorderPaint.setAntiAlias(true);
> mBorderPaint.setStyle(Style.STROKE);
> mBorderPaint.setStrokeWidth(2);
>
> /* Init painter used to draw the text inside the info window */
> mTextPaint = new TextPaint();
> mTextPaint.setARGB(255, 255, 255, 255);
> mTextPaint.setAntiAlias(true);
> }
>
> @Override
> protected LocationOverlayItem createItem(int i)
> {
> return new LocationOverlayItem(mContacts.get(i));
> }
>
> @Override
> public int size()
> {
> return mContacts.size();
> }
>
> @Override
> public void draw(Canvas canvas, MapView mapView, boolean shadow)
> {
> /* FIXME manual draw because automatic doesn't seem to work */
>
> /* Retrieve map view projection to compute coordinates */
> Projection projection = mapView.getProjection();
>
> /* For all contacts with location (including self) */
> for (int index = size() - 1; index >= 0; index--)
> {
> OverlayItem item = getItem(index);
> String title = item.getTitle();
> Point point = projection.toPixels(item.getPoint(), null);
>
> /* Draw bubble */
> canvas.drawBitmap(mBubbleBitmap, point.x -
> mBubbleBitmap.getWidth() / 2,
> point.y - mBubbleBitmap.getHeight(), null);
>
> /* Compute info window geometry */
> int INFO_WINDOW_WIDTH = getTextWidth(title) + TEXT_OFFSET_X * 2;
> RectF infoWindowRect = new RectF(0, 0, INFO_WINDOW_WIDTH,
> INFO_WINDOW_HEIGHT);
> int infoWindowOffsetX = point.x - INFO_WINDOW_WIDTH / 2;
> int infoWindowOffsetY = point.y - INFO_WINDOW_HEIGHT
> - mBubbleBitmap.getHeight() - 2;
> infoWindowRect.offset(infoWindowOffsetX, infoWindowOffsetY);
>
> /* Draw inner info window */
> canvas.drawRoundRect(infoWindowRect, 5, 5, mInnerPaint);
>
> /* Draw border for info window */
> canvas.drawRoundRect(infoWindowRect, 5, 5, mBorderPaint);
>
> /* Draw user name in the info window */
> canvas.drawText(title, infoWindowOffsetX + TEXT_OFFSET_X,
> infoWindowOffsetY + TEXT_OFFSET_Y, mTextPaint);
> }
>
> super.draw(canvas, mapView, shadow);
> }
>
> /* FIXME manual draw related function */
> /** @return text width in pixels that the text paint will use to
> draw text */
> private int getTextWidth(String text)
> {
> int count = text.length();
> float[] widths = new float[count];
> mTextPaint.getTextWidths(text, widths);
> int textWidth = 0;
> for (int i = 0; i < count; i++)
> textWidth += widths[i];
> return textWidth;
> }
>
> @Override
> protected boolean onTap(int index)
> {
> setFocus(getItem(index));
> return true;
> }
>
> @Override
> protected boolean hitTest(LocationOverlayItem item, Drawable marker,
> int hitX, int hitY)
> {
> return super.hitTest(item, marker, hitX, hitY +
> mBubbleBitmap.getHeight()
> / 2);
> }
>
> On 27 août, 20:49, "Chris Chiappone" <[EMAIL PROTECTED]> wrote:
>
> > Same problem here, i converted code normal overlay code that worked in
> > order to use the "recommended" ItemizedOverlay. Can anyone confirm
> > that this is a bug or are we just doing something wrong.
>
> > Thanks.
>
> > On Tue, Aug 26, 2008 at 9:52 AM, Guillaume Perrot
>
> > <[EMAIL PROTECTED]> wrote:
>
> > > Hi,
> > > I have the same problem.
> > > The draw function is called, I tried to override it, I even added a
> > > bitmap in the top left corner for test purposes, I see my dummy bitmap
> > > but no items...
>
> > > On 26 août, 07:50, marcel-182 <[EMAIL PROTECTED]> wrote:
> > >> Hi,
>
> > >> Same problem here. I added two items and I found out that even the
> > >> draw() method from ItemizedOverlay is called but there is nothing on
> > >> my map view. My code is quite equal to yours.
>
> > >> On 25 Aug., 18:29, Reto <[EMAIL PROTECTED]> wrote:
>
> > >> > I've been trying to use the ItemizedOverlay and OverlayItem classes in
> > >> > the 0.9 Beta to simulate map markers but have been having some
> > >> > problems getting it to display on the map.
>
> > >> > Once I've implemented my own ItemizedOverlay (and overriden
> > >> > createItem), creating a new instance of my class seems to work (I can
> > >> > extract OverlayItems from it) but adding it to the overlay list for
> > >> > one of my maps doesn't seem to do anything.
>
> > >> > I've included the code for adding the ItemizedOverlay to the map, and
> > >> > the ItemizedOverlay implementation itself is also included. Have I
> > >> > done something wrong or is this functionality not yet available?
>
> > >> > // Add the ItemizedOverlay to the Map
> > >> > private void addItemizedOverlay() {
> > >> > Resources r = getResources();
> > >> > mapView = (MapView)findViewById(R.id.map_view);
> > >> > List<Overlay> overlays = mapView.getOverlays();
>
> > >> > MyItemizedOverlay markers = new
> > >> > MyItemizedOverlay(r.getDrawable(R.drawable.icon));
> > >> > overlays.add(markers);
>
> > >> > OverlayItem oi = markers.getItem(0);
> > >> > markers.setFocus(oi);
> > >> > mapView.postInvalidate();
>
> > >> > }
>
> > >> > Where MyItemizedOverlay is defined as:
>
> > >> > public class MyItemizedOverlay extends ItemizedOverlay<OverlayItem> {
> > >> > public MyItemizedOverlay(Drawable defaultMarker) {
> > >> > super(defaultMarker);
> > >> > populate();
> > >> > }
>
> > >> > @Override
> > >> > protected OverlayItem createItem(int index) {
> > >> > Double lat = (index+37.422006)*1E6;
> > >> > Double lng = -122.084095*1E6;
> > >> > GeoPoint point = new GeoPoint(lat.intValue(), lng.intValue());
>
> > >> > OverlayItem oi = new OverlayItem(point, "Marker", "Marker Text");
> > >> > return oi;
> > >> > }
>
> > >> > @Override
> > >> > public int size() {
> > >> > return 5;
> > >> > }
>
> > >> > }
>
> > --
> > ~chris
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[EMAIL PROTECTED]
Announcing the new Android 0.9 SDK beta!
http://android-developers.blogspot.com/2008/08/announcing-beta-release-of-android-sdk.html
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
-~----------~----~----~----~------~----~------~--~---
