Looks like your mXLocation and mYLocation are wrong :) On Thu, Jun 23, 2011 at 12:26 AM, Zarah <[email protected]> wrote: > Hi Romain! > > I know, thanks for the reminder! This is just while I am trying out > stuff to help me get the result that I want. > > So far I am unsuccessful though. Any suggestions or pointers on how I > can make images draw where I want them to be? > > I moved everything out of the onDraw method and now I have this: > @Override > protected void onDraw(Canvas canvas) { > super.onDraw(canvas); > > canvas.drawBitmap(mResizedBitmap, mXLocation, mYLocation, null); > } > > with mResizedBitmap being the transformed image, and mXLocation and > mYLocation the coordinates I want the images to be in. But the images > are still all dumped onto the top-left corner of the screen. > > The API for drawBitmap says "Draw the specified bitmap, with its top/ > left corner at (x,y), using the specified paint, transformed by the > current matrix." But it doesn't do that. Is there any step I am > missing here? > > > Thanks! > - Zarah. > > > On Jun 23, 2:45 pm, Romain Guy <[email protected]> wrote: >> Never, ever, ever decode bitmaps from the onDraw() method. This is >> going to cause big performance issues. >> >> >> >> >> >> >> >> >> >> On Wed, Jun 22, 2011 at 11:41 PM,Zarah<[email protected]> wrote: >> > Hi again! I tried creating a custom View that extends View so I can >> > control how the image should appear and where it should appear. >> >> > I override the onDraw() method like this: >> > @Override >> > protected void onDraw(Canvas canvas) { >> > super.onDraw(canvas); >> >> > Bitmap bitmapOrg = >> > BitmapFactory.decodeResource(mContext.getResources(), mResourceID); >> >> > // ... set up image (scale, rotate, etc) ... >> > // (maybe this can be moved done before calling this method?) >> >> > canvas.drawBitmap(resizedBitmap, mXLocation, mYLocation, null); >> > } >> >> > It draws the image the size that I want it to be, at the coordinates I >> > want to be. So far, so good. I tried adding two instances of this >> > custom View and they appeared correctly. But I noticed that the bounds >> > of each image spans the whole screen, so I cannot capture which of the >> > two images was clicked. >> >> > I tried changing the custom View to inherit from ImageView instead, >> > and now the app can recognize which of the two images was clicked. BUT >> > it doesn't draw where I want it to draw. All images are dumped on the >> > upper left hand corner. :( >> >> > If I can merge the two results, it would be perfect (I think!) for >> > what I need. >> >> > Any thoughts? :) >> >> > Thank you so much! >> > -Zarah >> >> > On Jun 23, 11:45 am, Zsolt Vasvari <[email protected]> wrote: >> >> If you want the simplicity of View objects, use the layout_margin as I >> >> outlined above. >> >> >> The rotation should be doable via translation animations, if not, you >> >> can certainly set up a Timer and change the View margins so they >> >> appear is the new positions. Now, if you need to rotate each >> >> individual View so they appear as if they were on carousel, I am not >> >> sure how to do that. If they are just ImageButtons, you can probably >> >> rotate and change their Drawables. >> >> >> On Jun 23, 10:23 am,Zarah<[email protected]> wrote: >> >> >> > Hi Nik and Zsolt! Thanks for your responses! >> >> >> > Yeah, I would need to have the conveniences of View objects (listeners >> >> > and such). I would also need to be able to rotate the Canvas each time >> >> > the user clicks and drags on an image and still be able to track which >> >> > image was clicked. >> >> >> > -Zarah. >> >> >> > On Jun 23, 6:56 am, Zsolt Vasvari <[email protected]> wrote: >> >> >> > > But I think he wants the other niceties, such as the visible state >> >> > > changes, etc, at least that way my impression. Those things aren't >> >> > > trivial to implement. >> >> >> > > Of course, if that's not a requirement, just use a Canvas object. >> >> >> > > On Jun 22, 10:15 pm, niko20 <[email protected]> wrote: >> >> >> > > > I would suggest using a Canvas and just drawing yourself. Then in >> >> > > > the >> >> > > > onTouch handler just do the match to find which circle was clicked. >> >> > > > You could use RelativeLayout too if you wanted to use views. >> >> >> > > > -nik >> >> >> > > > On Jun 22, 5:56 am, Zsolt Vasvari <[email protected]> wrote: >> >> >> > > > > Yes, looks like it is. Sorry, I didn't know that as I've never >> >> > > > > used >> >> > > > > AbsoluteLayout. >> >> >> > > > > I guess you could use FrameLayout and then give each view an >> >> > > > > appropriate layout_marginLeft and layout_marginTop. >> >> >> > > > > On Jun 22, 6:44 pm,Zarah<[email protected]> wrote: >> >> >> > > > > > Hi Zsolt! >> >> >> > > > > > But isn't that deprecated already? >> >> >> > > > > > -Zarah. >> >> >> > > > > > On Jun 22, 6:40 pm, Zsolt Vasvari <[email protected]> wrote: >> >> >> > > > > > > Use an AbsoluteLayout >> >> >> > > > > > > On Jun 22, 6:33 pm,Zarah<[email protected]> wrote: >> >> >> > > > > > > > Hi guys, >> >> >> > > > > > > > This is such a n00b question but I hope someone helps me. :) >> >> >> > > > > > > > I have always made apps that make use of traditional >> >> > > > > > > > widgets so when >> >> > > > > > > > it comes to things like this I am totally at a loss. :( >> >> >> > > > > > > > Anyhooo, my aim is to display a set of images of beads into >> >> > > > > > > > a circle >> >> > > > > > > > (sort of forming a bracelet), with each bead being >> >> > > > > > > > clickable. Some of >> >> > > > > > > > the beads are not perfect spheres (some are oblong-ish), so >> >> > > > > > > > I would >> >> > > > > > > > have to rotate the images by some degrees to either left or >> >> > > > > > > > right to >> >> > > > > > > > make them look like they are stringed together. >> >> >> > > > > > > > I don't have an idea how to start doing this because I >> >> > > > > > > > don't know how >> >> > > > > > > > I should tell the OS where to place the images. Should I >> >> > > > > > > > use a Canvas? >> >> > > > > > > > Learn OpenGL? >> >> >> > > > > > > > If I use a Canvas, I would end up having a bitmap with all >> >> > > > > > > > the images, >> >> > > > > > > > right? Can I still make the images clickable? >> >> >> > > > > > > > If I use OpenGL, is it an overkill? The main animation I >> >> > > > > > > > would have to >> >> > > > > > > > do is simply have the circle rotate when the user clicks >> >> > > > > > > > and drags on >> >> > > > > > > > a bead. >> >> >> > > > > > > > Thank you in advance! >> >> >> > > > > > > > -Zarah.- Hide quoted text - >> >> >> > > > > > - Show quoted text -- Hide quoted text - >> >> >> > > > - Show quoted text -- Hide quoted text - >> >> >> > - Show quoted text - >> >> > -- >> > 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] >> > For more options, visit this group at >> >http://groups.google.com/group/android-developers?hl=en >> >> -- >> Romain Guy >> Android framework engineer >> [email protected] >> >> Note: please don't send private questions to me, as I don't have time >> to provide private support. All such questions should be posted on >> public forums, where I and others can see and answer them > > -- > 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] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en >
-- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them -- 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] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
