Preventing Bloated View Controllers with Coordinators in iOS

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A cartoon image depicting a coordinator pattern.

Overstuffed View Controllers: a problem that is universally despised by iOS developers the world over. Who hasn’t had their eyes glaze over while staring down debugging a 3000 line VC? View Controllers can control so much information, and Apple seems to have very few opinions on where specific logic should go. They give us the decision making power. How can we prevent against this annoying problem and modularize our apps better? Model–View–View Model (MVVM) can certainly help with this, but ultimately leaves routing to View Controllers, which doesn’t make the most sense. This is where a Coordinator comes in.

Meet Kotlin

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Kotlin is a JVM language that hit version 1.0 about a year ago (February 2016).
It is developed by JetBrains, the same people who make my favorite suite of
IDEs. The language itself is open-source under the Apache License 2.0 and is
developed as a community project over at kotlinlang.org. Kotlin is something
that I have become rather excited about over the past year. This post’s goal is
not to teach you Kotlin but to get you excited about it!

REST API Models in Swift

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There are a lot of APIs out there, a lot of networking layers, a lot of abstractions, I’m going to offer just one way to start building Swift models backed by a RESTful API. Out of personal preference, PromiseKit will be used instead of callbacks and ObjectMapper will be used to convert between JSON and Swift objects.

Hottest Social Media Platforms in China

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You might think that Facebook and Twitter are already occupying the social media space world wide,  However, in China they are blocked. When it comes to Social Media Marketing in China, you must use different tones to communicate with your Chinese audience on their own Social Media platforms, such as Weibo (equivalent of Facebook and Twitter in China), especially Sina Weibo, Tencent Qzone (equivalent of Facebook and Twitter in China), Tencent QQ (Instant Message tools), Tencent Wechat (Mobile communication and private social networking app), Renren (equivalent of Facebook in China) and Youku & Tudou (equivalent of YouTube in China).

What is Pixel Density and Why Should You Care?

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Pixel density is the number of pixels per linear physical unit. Measured in pixels per inch (ppi or dpi). Pixel density and resolution are technically the same thing, but often people say “resolution” to mean “pixel count,” a related metric:

count = densityH * width * densityV * height

When other things are held constant:

Beacons, iOS and You

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Photo of beacon

What are beacons?

a) A tiny piece of plastic.
b) A low energy bluetooth device.
c) An emerging technology with numerous applications.
d) All of the above.

If you guessed all of the above, you would be correct! Beacons are an IoT technology that is deceptively simple and small but packs a potentially large punch for app developers looking for new and interesting ways to engage their customers.

6 Steps to Improve App Search Rankings

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Working as developers, we are focused on the low level technical details of a product, being that a website or an app. This heads down approach often makes us not to pay attention to many high level details that are crucial to bring our product to success. The typical path for a developer, at least at the beginning, is to build an app, put it on the store and then see it fail miserably. If that has happened to your app, then this post is for you!

Apple Watch Connectivity

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On September 9th, 2014, Tim Cook announced the Apple Watch. This wearable smartwatch quickly gained the loyalty of millions. The wearable was developed in part to incorporate fitness tracking and allow for health tracking, but more-so to free users from their phones. It includes a digital crown used to scroll and zoom, and a touchscreen with Force Touch technology. An extra button under the digital crown serves favorite contacts and access to Apple Pay.

Introduction to React Native

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React Native underlines a JavaScript framework used in writing real and natively rendering mobile applications for Android and iOS. The framework is based on React, which is Facebook’s JavaScript library used in building interfaces for web applications. Building a mobile application using javascript isn’t anything new. The similar technique has been used in frameworks such as Ionic, Sencha Touch, Phone Gap, Cordova, and the list goes on.