Question

I hope make a gauge like in this as image.

I don`t find sample souce or article.

thanks

Answer 1

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