How can i make a gauge like this?

I hope make a gauge like in this as image.

开发者_运维问答

I don`t find sample souce or article.

thanks

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You can do that subclassing UIProgressView ( On iOS ) or NSProgressIndicator ( On Mac ).

Simply override - (void)drawRect:(CGRect)rect and do your custom drawing there.

- (void)drawRect:(CGRect)rect
{
    [self.backgroundColor set];
    UIRectFill(rect); // draw the background


    // determine the size of the "progress"
    float size = (rect.size.width/100)*self.progress;
    [[UIColor blueColor] set]; // blue progress
    UIRectFill(CGRectMake(rect.origin.x,rect.origin.y, size, rect.size.height));
}

I am not sure that this will do it, haven't tested it but it should for a very basic progressIndicator

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This question and answer should be useful:

Custom UIActivityIndicator, that is part of customized Framework or as a Sub Class

Basically, code your own. If you don't know how, start learning how, and ask plenty of (good) questions along the way!