问题
I would like to draw, in a ViewController, a countdown like in the following image:
Unfortunately, I don't have any idea on how to realize this. I will be please if someone could give me a clue on this.
Cheers.
Cyril
回答1:
A quick thought, I would not like to draw it by using any iOS frameworks :), Just use small UIWebView and run javascript(Only works if user enables javascript, but hey I have seen no one yet who doesn't use javascript).
Javascript polar time can be found on internet, open source like,
http://oneorangesoftware.com/polartimer/
change and edit a bit and off you go! Awesome time!
Cheers!
If you don't like above approach than you may look into this code,
http://www.herbert-siojo.com/2011/04/19/drawing-a-countdown-timer-ios/
nicely crafted however to achieve same look as yours you may have to tweak a bit!
Beware of this line in code,
[self performSelector:@selector(cancelPie:) withObject:timer afterDelay:sliderIntervalDelay.value];
just change to,
[self performSelector:@selector(cancelPie:) withObject:timer afterDelay:60.0];
Credit : Goes to a developer who posted their code on http://www.herbert-siojo.com/2011/04/19/drawing-a-countdown-timer-ios/.
回答2:
LOL, I am considering to write one like this these days. You would definitely like this. :]
Check it out here: Circle-Counter-Down
来源：https://stackoverflow.com/questions/8263430/draw-countdown-circles