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iOS Programming Recipe 34 – Making Your Own Cocoapod

In ruby on rails, which is an open source web framework, there exists a nice system of libraries called “Gems” that can be easily imported into a web project and just used. These gems also have a versioning system, that allows the developer to pick a specific version for the project, or more importantly keep the version consistant so the project doesn’t break because of a future change. Cocoapods gives the iOS developer this same kind of power. With cocoapods you can not only take advantage of thousands of open source libraries, but you can also make your own pods to keep track of several versions of libraries you make yourself. Currently, Apple doesn’t have a good versioning system solution. The community responded with Cocoapods, and today we’re gonna explain what a cocoapod is an how to make your own.

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Development Tools – Opacity

Assumptions:

  1. It isn’t required, but it will be helpful if you are familiar with layer based image editing or have experience with a graphics editing program such as Adobe Photo Shop

Getting Started

A important aspect of developing apps for iOS or OS X is creating a great User Interface. Even if your app has all the latest and greatest functionality, you are going to have a hard time getting anybody to use it if it is lacking in the UI department,.

Opacity to the rescue!

Opacity is a layer based vector graphics application for the Mac that makes designing graphics for your app a breeze. Opacity has built in templates for skinning buttons, creating 1x and 2x resolutions non-retina & retina devices, and many other time saving features as you will see!

Step 1: Download Opacity

Currently (as of this writing) Opacity is not available through the Mac App Store and I’m not sure if the developer has any plans to add it any time soon, however it can be downloaded at http://likethought.com/opacity/. I recommend starting with the trial version (free), but the full version will be necessary to remove a pesky watermark from your exported images (currently the full version is $89.99).

Additionally, there is a great video tutorial on the home page that I would recommend watching before moving on to Step 2.

Step 2: Creating a UIButton Image

Lets get started!

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