I talked yesterday at DevCamp 2013 about challenges that beginners face when developing for iOS. The slides are available at SpeakerDeck. Also, I’ve made a live demo and the code is available at GitHub.

If you wanna learn Objective-C without having a Mac OSX, or just learn in a easy way, take a look at this site.

I’m a huge fan of CocoaPods. It really improves my workflow when dealing with external libraries.

The only thing that I don’t like very much is the need of doing open MyApp.xcworkspace whenever I need to open the project. Luckly, I’ve found on the web a small ruby script that opens the first .xcworkspace found on the current folder, or the first .xcodeproj found (if no workspace was found).

Just copy it to /usr/local/bin and make it executable using chmod 777 xopen.

I hope it helps you as much as it helps me everyday. (:

This week my latest article on Ray Wendelich’s blog was published. It’s called 25 iOS App Performance Tips & Tricks and it’s been a great success so far! It’s been widely shared on Twitter and is the second article I’ve written (of three!) to be featured on iOS Dev Weekly (BTW, a great way to keep informed about iOS). The other article that was featured is Top 10 Most Useful iOS Libraries to Know and Love. Maybe Dave likes top lists (:

Here’s the list of tips and tricks on the article:

Beginner

• Use ARC to Manage Memory
• Use a reuseIdentifier Where Appropriate
• Set Views as Opaque When Possible
• Avoid Fat XIBs
• Don’t Block the Main Thread
• Size Images to Image Views
• Choose the Correct Collection
• Enable GZIP Compression

Intermediate

• Reuse and Lazy Load Views
• Cache, Cache, Cache
• Consider Drawing
• Handle Memory Warnings
• Reuse Expensive Objects
• Use Sprite Sheets
• Avoid Re-Processing Data
• Choose the Right Data Format
• Set Background Images Appropriately
• Reduce Your Web Footprint
• Set the Shadow Path
• Optimize Your Table Views
• Choose Correct Data Storage Option

Advanced

• Speed up Launch Time
• Use Autorelease Pool
• Cache Images – Or Not
• Avoid Date Formatters Where Possible

Be sure to read the full article!

Zeewe is the first real project that I’ve working on after start working at Movile. It’s a full YouTube client, but a way cooler interface. It’s been the most challenging project I’ve worked, but we are achieving great results.

Zeewe is free and it’s available on the AppStore worldwide. For now it’s only compatible with iPhone, but Universal support is coming soon. Go get it!

I’m currently finishing my first freelance work. It started on late December and I’ve been working on it on my very little free time and on weekends. I guess it’s been a valid experience because I was on college vacation when it’s started. Also, I enjoy a lot being able to understand a client problem and try to figure out the best way to give him what he needs (it’s generally is not what he wants).

The app is an iPad learning game for students learning basic English. The client is a languages school based here in Brazil, with 420 units on the country and 180.000 students/year. The app is available on the App Store for free. If you want to check it out, it’s called Yázigi App.

PS: The current version on AppStore is not the final version. At the time of writing, there’s 10 available minigames of 30.

This week the first version of PlayKids TV was approved on the App Store! I worked on it for the last 2 or 3 months at Movile and it’s great the feeling to ship it.

PlayKids TV is a subscription video service for kids from 0 to 5 years old, with a great tested user interface for your children. It’s only available on the Brazilian App Store for now.

I’ve configured Octopress on this site, so it’ll be easier to update it. Thus, I intend to post more frequently. Let’s see how it turns out.

I started to read Bill Dudney’s new book. It’s very great for people who haven’t learnt or worked with C, and want to understand what’s going on behind scenes. You can buy it on iTunes.

Want to know what are the best libraries for iOS development? I wrote an article about it on Ray Wenderlich’s Site. The libraries were picked by popular votes, tutorial team votes and guest star votes. The article is available here.

I created a website with some random and handy tips about iOS development. I’ll try to update it more frequently. Take a look at it!