how to get a pie progress bar - iphone

Question

I like the small pie progress bar like it's in Xcode, when search for a string in the project (Shift-Command-F), see picture.
How can this be called on iOS? I'd love to have it for a download queue.
Thanks in advance.

Answer 1

There's no stock circular deterministic progress view. Here's an example drawRect: you might use to implement such a thing.
- (void)drawRect:(CGRect)rect
{
CGFloat circleRadius = (self.bounds.size.width / 2) - (self.strokeWidth * 2);
CGPoint circleCenter = CGPointMake(CGRectGetMidX(rect), CGRectGetMidY(rect));
CGRect circleRect = CGRectMake(circleCenter.x - circleRadius, circleCenter.y - circleRadius, 2 * circleRadius, 2 * circleRadius);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSaveGState(context);
// Draw stroked circle to delineate circle shape.
CGContextSetStrokeColorWithColor(context, self.fillColor.CGColor);
CGContextSetLineWidth(context, self.strokeWidth);
CGContextAddEllipseInRect(context, circleRect);
CGContextStrokePath(context);
// Draw filled wedge (clockwise from 12 o'clock) to indicate progress
self.progress = MIN(MAX(0.0, self.progress), 1.0);
CGFloat startAngle = -M_PI_2;
CGFloat endAngle = startAngle + (progress * 2 * M_PI);
CGContextSetFillColorWithColor(context, self.fillColor.CGColor);
CGContextMoveToPoint(context, circleCenter.x, circleCenter.x);
CGContextAddLineToPoint(context, CGRectGetMidX(circleRect), CGRectGetMinY(circleRect));
CGContextAddArc(context, circleCenter.x, circleCenter.y, circleRadius, startAngle, endAngle, NO);
CGContextClosePath(context);
CGContextFillPath(context);
CGContextRestoreGState(context);
}
You would need to create strokeWidth and fillColor properties to use this code directly, but it should be a start. Here's a sample project with a couple of examples.

Answer 2

Maybe you can use the code from MBProgressHUD there is a pie like this in some kind bigger.

Answer 3

I don't believe they're released a UIProgressView like this on iOS, but you can create it yourself. To put things in the right-hand side of a text view, use the rightView property (don't forget to set rightViewMode as well).
You can create a custom UIView for this (I doubt it'd be worth trying to subclass UIProgressView). I would probably hand-draw it with a drawRect rather than trying to use images or anything like that. Should be much easier to fill the correct percentage that way.

Answer 4

May be you can use SSPieProgressView

Answer 5

Try this: LSPieProgressView
It's an UIView Category, can show a pie progress overlay any UIView.
Code Example:
#import "UIView+LSPieProgress.h"
- (void)updateProgress
{
[self.button setProgress:self.progress];
}