Hi Romain! Curiouser and curiouser. ;) Is there a documentation about the min/max values for the float values to pass into canvas.drawBitmap()? I can't seem to find any.
Hi Zsolt! You're right, I missed changing it to FrameLayout. The images still won't budge though, might be I'm passing wrong values too. Thanks, Zarah. On Jun 23, 3:27 pm, Romain Guy <[email protected]> wrote: > 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. 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