An iOS 7-inspired blue circular progress view

FFCircularProgressView

FFCircularProgressView is An iOS 7-inspired blue circular progress view.

Requirements

FFCircularProgressView works on iOS version > 5 and is compatible with both ARC and non-ARC projects. It depends on the following Apple frameworks, which should already be included with most Xcode templates:

• Foundation.framework
• UIKit.framework
• CoreGraphics.framework
• QuartzCore.framework

You will need LLVM 3.0 or later in order to build FFCircularProgressView.

Adding FFCircularProgressView to your project

There are plenty of ways to add this view to your project.
Make sure you add the aforementioned frameworks to your project as well.

GIT submodule

You have the canonical git submodule option. Simply issue git submodule add https://github.com/elbryan/FFCircularProgressView.git <path> in your root folder of your repository.

CocoaPods

1. Add a pod entry to your Podfile dependencies file such as pod 'FFCircularProgressView', '>= 0.1'.
2. Install the pod(s) by running pod install.
3. Import the progress view with `#import "FFCircularProgressView.h" wherever you need in your project.

Source files

Manually add the source files to your project. The files you need are 'FFCircularProgressView.h', 'FFCircularProgressView.m', 'UIColor+iOS7.h', 'UIColor+iOS7.m'.

Usage

Just use it as it is a normal UIProgressView. Make sure you set the progress value in the main thread ;)

double delayInSeconds = 2.0;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND,0), ^{
        for (float i=0; i<1.1; i+=0.01F) {
            dispatch_async(dispatch_get_main_queue(), ^{
                [circularProgressView setProgress:i];
            });
            usleep(10000);
        }            
    });
});

You can also control the progress view spin animation by using the following two methods to start and stop the spinning, respectively:

// Start spinning
[circularProgressView startSpinProgressBackgroundLayer];

// Stop spinning
[circularProgressView stopSpinProgressBackgroundLayer];

GitHub