UAProgressView is a simple and lightweight, yet powerful animated circular progress view.

Installation

Installation is made simple with CocoaPods. If you want to do it the old fashioned way, just add UAProgressView.h and UAProgressView.m into your project.

pod 'UAProgressView'

Then, simply place this line in any file that uses UAProgressView.

#import <UAProgressView.h>

UAProgressView works on iOS 6.0 and up.

Usage

Simple Setup

UAProgressView has sensible defaults to make setup a breeze.

1. Add a custom view to your storyboard, xib or create a UAProgressView in code.
2. Set the progress on your UAProgressView by calling setProgress:

The progress should be a CGFloat between 0 and 1, but we will round to the closest if over/under.

The default color used for UAProgressView is the view's tintColor, and it will travel up the superview tree as expected to set it.

--

Custom Setup

There are many different configuration options to setup UAProgressView the way you want it.

Center View

Rather than force a stop button, label or some other canned central view, you can set the center view to be anything you want. In the example above, the centralView is set to a custom UILabel.

The centralView will be centered in the view but not resized, so plan accordingly when setting it up. It sits above the progress view in the layer hierarchy so it receives first tap.

There is no central view setup by default.

@property (nonatomic, strong) UIView *centralView;

Example usage:

UILabel *textLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 60.0, 32.0)];
textLabel.font = [UIFont fontWithName:@"HelveticaNeue-UltraLight" size:32];
textLabel.textAlignment = NSTextAlignmentCenter;
textLabel.textColor = self.progressView.tintColor;
textLabel.backgroundColor = [UIColor clearColor];
self.progressView.centralView = textLabel;

Border Width

Border width is the thickness of the outer circle. It is set to 1.0 by default.

@property (nonatomic, assign) CGFloat borderWidth;

Example usage:

self.progressView.borderWidth = 2.0;

Line Width

Line width is the thickness of the inner circle. It is set to 1.0 by default.

@property (nonatomic, assign) CGFloat lineWidth;

Example usage:

self.progressView.lineWidth = 2.0;

Selection Indication

When fillOnTouch is enabled (default is YES), UAProgressView will immediately fill the view with the tintColor. If the touch is then removed (ie: selected) the fill will fade out, similar to the iOS 7 phone app.

@property (nonatomic, assign) BOOL fillOnTouch;

Example usage:

self.progressView.fillOnTouch = YES;

Animation Duration

The duration over which to animate the progress set. Default is 0.3 seconds. animationDuration < 0 is ignored.

@property (nonatomic, assign) CFTimeInterval animationDuration;

The animationDuration variable is only used when calling setProgress:animated: with YES.

Event Blocks

On Select

You can set a block to be called when there was a touchUpInside on the progress view.

@property (nonatomic, copy) void (^didSelectBlock)(UAProgressView *progressView);

Example usage:

self.progressView.didSelectBlock = ^(UAProgressView *progressView){
    AudioServicesPlaySystemSound(_horn);
};

On Progress Change

You can set a block to be called whenever the progress is changed. This can be useful if the object updating the progress does not know about the central view.

@property (nonatomic, copy) void (^progressChangedBlock)(UAProgressView *progressView, CGFloat progress);

Example usage:

self.progressView.progressChangedBlock = ^(UAProgressView *progressView, CGFloat progress){
    [(UILabel *)progressView.centralView setText:[NSString stringWithFormat:@"%2.0f%%", progress * 100]];
};

On Fill Change

You can set a block to be called whenever the fill color is changed in your progress view. This is useful to invert colors on the central view, or do other visual updates when the progress view is filled.

@property (nonatomic, copy) void (^fillChangedBlock)(UAProgressView *progressView, BOOL filled, BOOL animated);

Example usage:

self.progressView.fillChangedBlock = ^(UAProgressView *progressView, BOOL filled, BOOL animated){
    UIColor *color = (filled ? [UIColor whiteColor] : progressView.tintColor);
    if (animated) {
        [UIView animateWithDuration:0.3 animations:^{
            [(UILabel *)progressView.centralView setTextColor:color];
        }];
    } else {
        [(UILabel *)progressView.centralView setTextColor:color];
    }
};

Configuration/Usage Examples

For more information on how to use and setup UAProgressView, please see the example project.

UAProgressView vs. MRCircularProgressView

MRCircularProgressView is great and was the inspiration for UAProgressView, but it lacked much of the customization that UAProgressView now offers. UAProgressView is probably a better fit for you instead of MRProgress if you want:

1. More customization
2. More control
3. No additional unused classes
4. Block based interface

Bugs / Pull Requests

Let us know if you see ways to improve UAProgressView or see something wrong with it. We are happy to pull in pull requests that have clean code, and have features that are useful for most people.

What Does UA stand for?

Urban Apps. We make neat stuff. Check us out.

Open-Source Urban Apps Projects

• Armchair - A simple yet powerful App Review Manager for iOS and OSX (Swift)
• UAModalPanel - An animated modal panel alternative for iOS
• UAAppReviewManager - An app review prompting tool for iOS and Mac App Store apps.
• UALogger - A logging utility for Mac/iOS apps
• UAObfuscatedString - A simple NSString category to hide sensitive strings
• Urban - An Xcode color scheme that uses a soft dark background, with subtle blue, orange and yellow colors

Feeling Generous?

If you want to thank us for open-sourcing UAProgressView, you can buy one of our apps or even donate something small.