iOS / OS X Archives

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iOS / OS X

Working with iOS Image Filters in Swift

To my delight, most of the iOS image processing libraries are simple to use. Here's a walkthrough to get you started with iOS image filters in Swift.

iOS / OS X

Getting Auto Layout to Work in a UITableView

Even if you have no choice but to use UITableView, I’ve found it is usually possible to get it working with Auto Layout by following a few key steps.

iOS / OS X

Auto Layout Demystified

It is not rocket science. In this blog post I will show you how simple the Auto Layout equation really is and some tricks in Xcode to make your life easier.

iOS / OS X

Using CircleCI to Test and Deploy an iOS App

Review of how to use CircleCI with your iOS application. Includes explanation of how to handle bumps in the road on the path to CI and easy deployments.

iOS / OS X

Utilizing the iOS Background with Xamarin: Part 2

Intro to Background Transfer Service in iOS—a service that allows apps to download/upload large amounts of data in the background with no time limits.

iOS / OS X

Utilizing the iOS Background with Xamarin: Part 1

Even platform-specific APIs like iOS Background Fetch are no match for Xamarin! Here's how to implement basic iOS Background Fetch with Xamarin.

iOS / OS X

Creating Graphics Code in iOS & OS X with PaintCode

PaintCode generates dynamic shapes in Swift or Objective-C code. It cuts the time to prototype the drawing code by an order of magnitude.

iOS / OS X

CoreLocation in the Wild: Experiments in Monitoring More than 20 iBeacon Regions

So we needed to engineer a way around Core Location's limit and track more than 20 distinct iBeacon regions in our system.

iOS / OS X

Detecting Drag-Into Touch Events in UIViews

I had several UIViews arranged on a screen and wanted to detect when the user drags a finger into one of the views. Seems straightforward, right?

Developer Tools, iOS / OS X, Objective-C

Finding iOS Memory Leaks with Xcode’s Instruments

Memory leak in your iOS app? You can use Xcode's Instruments tool to track it down, fix it, and get everything running again.

iOS / OS X

Managing Multiple BLE Devices in iOS

Bluetooth Low Energy is a popular choice for connecting devices to smart phones, but what do you do when dealing with multiple BLE devices in iOS?

iOS / OS X

NSDateFormatter – Proceed with Caution!

My discovery: to avoid bugs, you want to use lowercase "y" for the year component of your date format string in NSDateFormatter.

iOS / OS X

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