UIGraphView

UIGraphView is a view type designed for iOS using the Swift programming language.

Bar Graph Mode	Line Graph Mode

Designed to display a timeline of information:

• Past day by hour
• Past week by day
• Past month by day
• Past year by month

Can be modified to display different types of information sets.

Features

• Easy installation with a single function to set up
• Customizable design through interface builder
• Automatically creates x-axis labels based on timeFrame passed and current date

Installation

Simply add UIGraphView.swift and SharedExtensions.swift to your Xcode project.

Note: SharedExtensions.swift contains an extension I wrote in order to easily return a clean string from a Double. This is used in several places in UIGraphView.swift so it is essential. Alternatively, you can copy the cleanValue extension and paste it at the end of UIGraphView.swift.

Usage

Add UIGraphView.swift to your Xcode project.

Add a view to your view controller and set its class to UIGraphView.

Create an @IBOutlet of type UIGraphView and point it at the view:

@IBOutlet var graphView: UIGraphView!

To setup the graph information use configure:

graphView.configure(graphData: [Double],
                    graphTimeFrame: String,
                    graphTitle: String,
                    graphSubtitle: String,
                    latestEntry: String,
                    latestEntryTime: String)

graphData expects an array of Doubles and should automatically adjust placement of data points based on the amount of entries in the array.

graphTimeFrame expects a string of Day, Week, Month, or Year. If one of these strings is passed to graphTimeFrame, x-axis labels will be automatically created for you based on that time frame and the current date.

graphTitle, graphSubtitle, latestEntry, and latestEntryTime all expect String values.

While the graph should accept any length of graphData array, for the data points to properly line up with the x-axis labels you should use an array with a length appropriate for the graphTimeFrame you use:

• Day expects 24 entries
• Week expects 7 entries
• Month expects 31 entries
• Year expects 12 entries

Interface Builder Designable

UIGraphView can be set up in Interface Builder. You can specify Graph Type (barGraph), Graph Corners (cornerRounding, cornerRadius), Graph Background Colors (gradientTop, gradientBottom), and Graph Information Colors (graphLineColor, graphDataColor, graphFontColor). All of these have default settings.

Requirements

UIGraphView was built and tested using:

• iOS 11
• Xcode 9
• Swift 4

Author

Programmed and designed by Peter Mostoff. You can contact me via Twitter if you'd like! I'm definitely open to suggestions on how to improve this code. I made it work for what I needed and thought I'd share, but I'm sure there are ways to improve it that I haven't even thought of. Please let me know if you have any suggestions!

If you do use this code in an application you're working, I'd really appreciate you letting me know. I'd really enjoy getting to know this was useful for someone else and maybe I'll even drop in a link to your app here!

If you're interested, you can visit my personal site to see what I'm up to at Mostoff.me or if you want to support my work, check out the apps that I've published on the App Store!

Apps Using UIGraphView

Gone So Far: Distance Tracker

Hydration: Water Tracker

HeartRate: BPM Tracker

License

UIGraphView is available under the MIT license. See the LICENSE file for more info.