[android-developers] Re: How to do an animated pie chart?
Maybe when android support animated gifs that would be easier (assuming there is an animated gif generator library): http://groups.google.com/group/android-beginners/browse_thread/thread/edfc219135fe0909?pli=1 I wonder if Google Charts API will support animated gifs in the future. That would be a killer feature. On Tue, Jan 6, 2009 at 11:04 AM, melody melodis.andr...@gmail.com wrote: I wasn't able to do this with the standard animation classes, but I did manage to do it. First I used the use of the ArcShape class to generate the slice of the pie. In order to acheive the animation, I set up a worker thread to repeatedly change the sweepAngle and call invalidate() on the containing view at an arbitrary refresh rate (50ms seems to look smooth). It seems to work fine, but again, if anyone knows of a better way to do this, I'm all ears. melody wrote: Hi, I tried asking this in the beginners forum but didn't get any responses so I thought I'd try here. I was wondering if someone could give me some guidance on how to do an animated pie chart. My initial idea is to have a circle background image as my pie, and then create a slice of the pie and animate the scale and rotation of the slice. However I'm not really sure how to do that. Or if there is a completely different but better way to do this, that would be great to know too. Thanks. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: How to do an animated pie chart?
I wasn't able to do this with the standard animation classes, but I did manage to do it. First I used the use of the ArcShape class to generate the slice of the pie. In order to acheive the animation, I set up a worker thread to repeatedly change the sweepAngle and call invalidate() on the containing view at an arbitrary refresh rate (50ms seems to look smooth). It seems to work fine, but again, if anyone knows of a better way to do this, I'm all ears. melody wrote: Hi, I tried asking this in the beginners forum but didn't get any responses so I thought I'd try here. I was wondering if someone could give me some guidance on how to do an animated pie chart. My initial idea is to have a circle background image as my pie, and then create a slice of the pie and animate the scale and rotation of the slice. However I'm not really sure how to do that. Or if there is a completely different but better way to do this, that would be great to know too. Thanks. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: How to do an animated pie chart?
You shouldn't need to use a worker thread. If you want to run up to the screen refresh rate, just do invalidate() in onDraw(). Otherwise, you can use Handler in the main thread to post delayed messages to achieve whatever update rate you want. On Mon, Jan 5, 2009 at 4:04 PM, melody melodis.andr...@gmail.com wrote: I wasn't able to do this with the standard animation classes, but I did manage to do it. First I used the use of the ArcShape class to generate the slice of the pie. In order to acheive the animation, I set up a worker thread to repeatedly change the sweepAngle and call invalidate() on the containing view at an arbitrary refresh rate (50ms seems to look smooth). It seems to work fine, but again, if anyone knows of a better way to do this, I'm all ears. melody wrote: Hi, I tried asking this in the beginners forum but didn't get any responses so I thought I'd try here. I was wondering if someone could give me some guidance on how to do an animated pie chart. My initial idea is to have a circle background image as my pie, and then create a slice of the pie and animate the scale and rotation of the slice. However I'm not really sure how to do that. Or if there is a completely different but better way to do this, that would be great to know too. Thanks. -- Dianne Hackborn Android framework engineer hack...@android.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
