Archive for 'Programming'

A Forest Of Loggers

So since we moved off Lightspeed Pascal as our Macintosh development environment way back in the day, we’ve been toting around this suite of logging, timing, and so forth debugging macros that by this time can be called transparently from .c/.cpp/.m/.mm files in development environments ranging from Lightspeed C through Metrowerks CodeWarrior up to Xcode 6+; but as we gear up to take on our intended New Year’s resolution of shipping a full hand of Swift apps next year … oh wait, there’s no macros in .swift code now! Well, there goes two and a half decades of accumulated cleverness out the window, bah humbug.

Not that it would be too terribly hard to rewrite said suite using NDEBUG and @autoclosure like assert(), but why bother with that when no doubt there’s somebody else’s projects for native Swift logging out there doing that already we can join? And why yes, here’s two that the exemplarily diligent ManiacDev folk have turned up on Github:

XCGLogger looks considerably more active than Swell, so we’ll go with that one. Unless any of you Dear Readers have an excellent reason why not. But long as we’re on the topic, let’s take a look at what Objective-C options checking CocoaPods brings up that we could raid for feature additions … my, there are a lot, aren’t there now?

  • CCLogSystem (5/54/18) “A Log system for iOS.Support print, record and review logs.”
  • CocoaLumberjack (270/4131/705) “A fast & simple, yet powerful & flexible logging framework for Mac and iOS”
  • DLLog (1/2/1) “NSLog-like logging API with support for level and context filtering”
  • GRLogger (1/2/1) “a logger utility for debugging and tracing”
  • LibComponentLogging (5/101/13) “Logging for Objective-C with log levels and log components.”
  • Log4Cocoa (12/80/29) “is a Log4j port for iOS and Mac OS X”
  • MTLog(11/218/24) (ManiacDev) “NSLog replacement for coders!”
  • NALog (1/3/0) “An easy, lightweight, and simple NSLog-based logging tool”
  • NBULog (13/22/5) “Log framework based on CocoaLumberjack…”
  • NSLogger (147/2447/299) “A modern, flexible logging tool”
  • NWLogging (7/14/4) “A minimalistic logging framework for Cocoa”
  • OCLogTemplate (8/9/3) “A flexible logging header for Objective-C”
  • TFLogger (7/2/0) “Dependency free logging library”
  • TULogging (1/7/0) “Better logging that uses ASL log levels”
  • UALogger (11/235/21) “A powerful and flexible logging utility for Mac/iOS apps”
  • WZLog (1/2/0) “A log system for iOS” … and that’s about it not in Japanese.
  • XLFacility (8/97/2) “Elegant and extensive logging facility for OS X & iOS (includes database, Telnet and HTTP servers)”

CocoaLumberjack is pretty much the venerably accepted standard, as the numbers there attest, but some of these othes look interesting too. Particularly that very last one, XLFacility; from the ManiacDev writeup,

Some of the features of XLFacility include:

  • Viewing of logging messages in real-time via Telnet or TCP
  • An HTTP server for viewing real-time log messagess and browsing past logging messages
  • Different logging levels, and macros for easy logging at each level
  • Customizable logging formats
  • An in-app logging overlay that can appear when messages are sent to XLFacility
  • A nice syntax for creating your own custom loggers

With XLFacility you can log to the console, a file, a SQLite database, and you can also view messages in realt-time via Telnet or TCP and there is a built-in http server so you can browse past log messages or see live updates…

That’s some serious feature-laden logging there, that is.

UPDATES:

ZHSwiftLogger: “…will use println() for development and use NSLog() for production.”

PrintlnMagic “An alternative for Swift’s println() function along the lines of DLog.”

SwiftLog “Simple and easy logging in Swift.”

Debug Logging In Swift

Teleport-NSLog: Open Source Library Enhancing NSLog Allowing You To Log To A Remote Server

CleanroomLogger: “provides a simple, lightweight and performant logging API written in Swift”

Learn How People Use Your App – an App Analytics Tools Round-up

ARAnalytics : “is a analytics abstraction library offering a sane API for tracking events and user data. It currently supports on iOS: TestFlight, Mixpanel, Localytics, Flurry, GoogleAnalytics, KISSmetrics, Crittercism, Crashlytics, Bugsnag, Countly, Helpshift, Tapstream, NewRelic, Amplitude, HockeyApp, ParseAnalytics, HeapAnalytics, Chartbeat, Yandex Mobile Metrica, and Branch. And for OS X: KISSmetrics and Mixpanel.”

ARAnalyticsLogger: “A bridge between CocoaLumberjack and ARAnalytics,” derived from CrashlyticsLumberjack

Aspect-Oriented Programming and ARAnalytics

Swiftalytics: “A declarative Swift DSL for your view tracking needs.”

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AWS Mobile SDK v2

In case you’re not on the AWS mailing list like apparently we got onto somehow, there’s a new version of the AWS mobile SDK out, and it looks like it might be worth some serious consideration for your cross platform back end needs:

The AWS Mobile SDK helps you build high quality mobile apps quickly and easily. It provides access to AWS Mobile services, mobile-optimized connectors to popular AWS data and storage services, and easy access to a broad array of other AWS services…

And what are these services? Quite a bit actually:

Amazon Cognito makes it easy to save user data, such as app preferences or game state, in the AWS Cloud without writing any backend code or managing any infrastructure. You can save data locally on users’ devices allowing your apps to work even when the devices are offline. With Amazon Cognito, you can focus on creating great app experiences instead of having to worry about building and managing a backend solution to handle identity management, network state, storage, and sync.

Amazon Mobile Analytics lets you easily collect, visualize, and understand app usage data at scale. Amazon Mobile Analytics is designed to provide aggregated data within 60 minutes of receiving events from an app so that you can act on the data more quickly. With Amazon Mobile Analytics, you get 100 million events per month for free.

Amazon Simple Notification Service (Amazon SNS) makes it simple and cost-effective to push notifications to Apple, Google, Fire OS, and Windows devices, as well as Android devices in China with Baidu Cloud Push. You can also use SNS to push notifications to internet connected smart devices, as well as other distributed services. You get 1 million notifications/month for free.

Amazon Simple Storage Service (S3) provides secure, durable, highly-scalable object storage. Amazon S3 is easy to use, with a simple web services interface to store and retrieve any amount of data from anywhere on the web, and the AWS Mobile SDK includes additional functionality to optimize access from a mobile device.

Amazon DynamoDB is a fast and flexible NoSQL database service for all applications that need consistent, single-digit millisecond latency at any scale. It is a fully managed database and supports both document and key-value data models. Its flexible data model and reliable performance make it a great fit for mobile applications.

Amazon Kinesis is a fully managed service for real-time processing of streaming data at massive scale. Amazon Kinesis can continuously capture and store terabytes of data per hour from hundreds of thousands of sources such as mobile app events and website clickstreams. You can also emit data from Amazon Kinesis to other big data services such as Amazon S3, Amazon Redshift, and Amazon Elastic Map Reduce (Amazon EMR).

Haven’t used any of this either v1 or v2 ourselves, but if you feel like trying it, there’s a 12-month free plan; sign up, check it out,

To get started, learn more at http://aws.amazon.com/mobile and download the iOS or Android SDK. Engage with the AWS developer community on the AWS Mobile forums or our Github Android|iOS repositories. To stay up-to-date, follow us on Twitter at @awsformobile.

and let us know how that went for you!

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Bezier Pathological Strings

Here’s a handy little Swift library for adding a dab of style to your string rendering:

lvnyk / BezierString: Rendering NSAttributedStrings along arbitrary UIBezierPaths

where.png

Take your string and your path and generate a UIImage, draw into a CGContext, or use UIBezierLabel anywhere you’d use a common-or-garden UILabel. Cool beans!

And if you’re not overly familiar with UIBezierPaths, check out some of our other mentions of their care and feeding and applied niftiness:

Bézier Path Construction

Bezier Path Boolean Ops

Bezier PathMove

Core Animating Interfaces

Library: Capture a Signature

h/t: ManiacDev!

UPDATES:

How to curve CGMutablePath?mayoff / path-warp: UIBezierPath+Rob_warp.h

Custom UIView Animations with Vector Graphics

Cubic Bezier Curves Under the Hood

Open Source iOS Library That Adds Caching To UIBezierPath For Increased Performance

Mastering the Bézier Curve in Sketch

jmenter / JAMSVGImage: “Display resolution independent SVGs in iOS.”; timrwood / SVGPath: “Parse SVG path strings into UIBezierPaths in Swift”; The Ultimate Guide to SVG; check out our old SVGKit notes

Shapes: Open Source iOS Library Making It Easier To Create Custom Shaped And Animated Components

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Prerelease App Store Testing

What, you say, aren’t “prerelease” and “App Store” definitionally contradictory? Why no, no in fact they are not!

How to Test the Final App Binary before It Is Released on the App Store

  1. Manually release the app…
  2. Submit your app for review as usual…
  3. Pending developer release…

… At this point the Promo Codes link appears at the bottom of the app details page.

And apparently promo codes can be requested and work just fine even when the app isn’t technically released yet! Aside from this small caveat:

… when the promo code is for an update, iOS sometimes gets confused. It’s not consistent. But sometimes the App Store app shows an Update button right after the download is complete. It’s not clear to me if tapping the Update button will download the update you really want, or if it will “update” to the latest public release available on the App Store. Sometimes the whole process fails and my update is nowhere to be seen. So don’t be dismayed if need to burn more than one promo code to get the binary you want downloaded onto your device…

Still, it’s pretty awesome to be able to do a final final final test that no showstoppers slipped through into the actual App Store binary and reduce your launch day stress by several orders of magnitude, tisn’t it now?

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NSFileCoordinated iOS IPC

IOS IPC? For reals? Well, for a “your app group” definition of “P”, yep pretty much:

Sharing data between iOS apps and app extensions

You’ll want to use NSFileCoordinator any time you want to read or write your shared files. You’ll also want to implement NSFilePresenter any time you need to know if a file has changed. These were introduced as companions to iCloud, where both your app and the iCloud daemon might want to access the same file. They’re not iCloud specific, though…

There’s still no full IPC mechanism on iOS. NSDistributedNotification hasn’t made the jump from OS X to iOS and probably never will. But file coordination and presentation can serve the same purpose, as long as the apps use the same app group.

When I was adding file coordination and presentation to my demo app, I realized that they could also be used for notifications between an app and its extensions. If one of them does a coordinated write while the other is using a file presenter for the file, the call to presentedItemDidChange happens almost instantly. Notification is the whole purpose of that method, so it makes sense it would work this way. I want to be notified if a specific file changes, and that’s how I get the notification.

But you don’t need to care about the file contents to be interested in notifications. If you just want a notification, choose a file name and use it as the notification mechanism. Any time one process needs to notify the other, make a change to the file. The other will get a file presenter call, and the notification is complete. It feels sort of like a hack but really this is exactly how the API is designed to work.

Cool beans! That opens up the extension useful problem space a good deal, doesn’t it now?

h/t: Michael Tsai!

UPDATES:

Accessing Shared Data from an App Extension and its Containing App

Important: When you create a shared container for use by an app extension and its containing app in iOS 8, you are obliged to write to that container in a coordinated manner to avoid data corruption. However, you must not use file coordination APIs directly for this [UPDATE: in iOS 8.1.x and earlier]. If you use file coordination APIs directly to access a shared container from an extension in iOS 8.0 [UPDATE: in iOS 8.1.x and earlier], there are certain circumstances under which the file coordination machinery deadlocks.

WatchKit Data Sharing: Beware of the NSFileCoordinator and NSFilePresenter

Introducing MMWormwhole

ddeville / LLBSDMessaging: Interprocess communication on iOS with Berkeley sockets

Interprocess communication on iOS with Mach Messages

File Coordination Fixed: “In iOS 8.2 or higher, the obvious approach should now be safe.” as noted above.

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Demassify View Controllers

Nice writeup here on formalizing pattern names for approaches to avoiding that Massive View Controller problem it’s all too easy to slip into:

8 Patterns to Help You Destroy Massive View Controller

View controllers become gargantuan because they’re doing too many things. Keyboard management, user input, data transformation, view allocation — which of these is really the purview of the view controller? Which should be delegated to other objects? …

Data Source

The Data Source Pattern is a way of isolating the logic around which objects live behind what index paths. Particularly in complicated table views, it can be useful to remove all of the logic of “Which cells are visible under these conditions?” from your view controller…

Standard Composition

View controllers can be composed using the View Controller Containment APIs introduced in iOS 5. If your view controller is composed of several logical units that could each be their own view controller, consider using Composition to break them apart…

Smarter Views

If you’re allocating all of your view controller’s subviews inside of the view controller’s class, you may consider using a Smarter View. UIViewController defaults to using UIView for it’s view property, but you can override it with your own view…

Presenter

The Presenter Pattern wraps a model object, transforms its properties for display, and exposes messages for those transformed properties…

Binding pattern

In method form, this might be called -configureView. The Binding Pattern updates a view with model data as it changes…

Interaction pattern

Interactions often include an initial user input (like a button press), optional additional user input (“Are you sure you want to X?”), and then some activity, like a network request or state change. The entire lifecycle of that operation can be wrapped up inside the Interaction Object…

Keyboard Manager

Updating the view after the keyboard state changes is another concern that is classically stuck in the view controller, but this responsibility can easily be shifted in a Keyboard Manager. ..

Navigator

Navigating from screen to screen is normally done with a call to -pushViewController:animated:. As these transitions get more complicated, you can delegate this task to a Navigator object..

h/t: Michael Tsai!

And while you’re contemplating how to split things up into maintainability, also check out

Clean Up The Application Delegate With Initializers

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Watch Out!

Just in case you were off in rural Bangladesh like us last week, the Apple WatchKit SDK is out:

Developers, Start Designing Apps for Apple Watch

WatchKit Developer Page

Video Overview of WatchKit

Apple Watch Human Interface Guidelines

WatchKit Programming Guide

Lister (for Apple Watch, iOS, and OS X)

Apple Watch Design Resources

WatchKit Development Tips

And here’s a survey of some immediate reactions:

What you need to know about WatchKit

Pretty cool stuff, right?

Initial Impressions for WatchKit

… I am very pleasantly surprised by how capable it is … Rather than just saying we only get Glances and Notifications, we get to build actual, useful watch apps …

WatchKit: Initial Impressions

Overall, WatchKit offers far more than I expected in this initial release … From the new Apple Watch-specific controls, to glances, actionable notifications, deep linking with Handoff, image caching and more — as a developer, this is the kind of stuff that gets me excited!

A day with WATCH

David Smith put it best: there’s a lot more here than most of us expected…

How To Create A “Hello World” WatchKit App and WatchKit: Let’s Create a Table and WatchKit: Page-Based Navigation and WatchKit: Hierarchical Navigation and WatchKit: Accessing Data From Your iOS App and WatchKit: The First Glance at Glances and WatchKit: Let’s Add a Menu [and WatchKit: Customizing the Global Tint and …]

I can’t get enough of WatchKit. Sooooo much to learn!

WatchKit Tutorial with Swift: Getting Started

iOS developers rejoice – WatchKit is finally here!

Apple’s new WatchKit SDK hints at the future of Apple Watch’s apps

WatchKit is here. What does it mean?

Well-nigh euphoric, you people!

UPDATES:

Watch Hackathon Live

Hello WatchKit! Learn how to build an Apple Watch app

jblocksom / WristComms: “WatchKit extension / host app communications example.”

Thoughts on WatchKit

Confirmed: Apple Watch Runs iOS

Apple’s San Francisco Typeface

WatchKit Extension Problem: Sharing a Core Data Store Can Lead to Duplicate Entries

johnno1962 / WatchkitCurrency: “Swift Currency Convertor for iWatch with flexible interface.”

frosty / Flipbook: “A Swift tool to render UIViews to image sequences for use with WatchKit…”

azamsharp / WatchNotes: “Notes on your wrist!”

Positioning Tutorial in WatchKit

WatchKit Swift Tutorial – Download Xcode 6.2 Beta and Start Making Apple Watch Apps

David Smith’s As I Learn WatchKit (AILW)

  1. Introducing As I Learn WatchKit (AILW):
  2. Visualizing Watch Apps
  3. Learning in the Dev Forums
  4. Building a basic WatchKit App
  5. Economics of WatchKit Apps
  6. Introducing MMWormhole
  7. openParentApplication:reply:
  8. WatchKit Data Sharing (Video)
  9. Immediacy
  10. Bezel and xScope
  11. Inquisitive #21: Exploit the Constraints
  12. Beta 4 Documentation Changes
  13. A Day Spent Designing a WatchKit UI
  14. WatchKit UI Component Walkthrough (Video)
  15. Ubiquitous Time
  16. Understanding WatchKit Layout (Video)
  17. Guessing the Apple Watch Release Date
  18. Displaying Tabular Data (Video)
  19. Beta 5 Documentation Changes
  20. Tap Distance
  21. WatchCon 2
  22. A few interviews
  23. Prettier Status Bar Trick
  24. Spring Forward Event Announced
  25. #212: Four Phases of a Gold Rush
  26. Adding a Touch of Liveliness
  27. WatchSim
  28. Connected #33: The RoboCop of Apple Watches
  29. Appearance: Mobile Couch #54
  30. Pending an Apple Release
  31. My WatchKit Apps
  32. First WatchKit Review Guideline
  33. Thinking about Load Time

NSHipster’s Watch​Kit

Top 5 Things to Consider When Designing for Apple Watch

How to write a WatchKit Counter App in Swift

WKInterfaceTimer – Add a Countdown to a Swift WatchKit App

WatchKit Data Sharing: Beware of the NSFileCoordinator and NSFilePresenter

Introducing MMWormwhole

WatchKit Resources

WatchKit and Threading

Limitations of Dates and Timers on WatchKit

WatchKit: Open Your iOS App From The Watch

konstantinkoval / WatchKit-Apps : “Tutorials app for WatchKit.”

SpeakerDeck: WatchKit by Jonathan Blocksom

Integrating FontAwesome on WatchKit

How Your Favorite Apps Will Look On The Apple Watch

WatchKit Introduction: Building a Simple Guess Game

Radial Bar Chart Generator

Designing Chronicons: Icon Size

WatchKit Extensions: Communicating with your Parent Application; Communicate Between WatchKit Extension and App

D-32 / AppleWatchSBB: “Apple Watch app to access the SBB timetable”

Bezel: “shows a window that looks like an Apple Watch and projects the contents of the Simulator’s watch window into it.”

Apple Watch wins the wrist war before it starts

Apple Watch. Tesla Car. How Far Can We Drive Them?

WatchKit Delegates and Contexts

WatchKit Settings Bundle

5 Important Design Principles for Apple Watch Apps

Apple Watch apps: What to pay attention to when designing for the wrist

Instagram/IGInterfaceDataTable: “A category on WKInterfaceTable that makes configuring tables with multi-dimensional data easier.”

kenshin03/Cherry: “Mini Pomodoro Timer app designed for the  Watch.”

radianttap/WatchRingGenerator: “iOS app to generate series of PNG images, to be used in WatchKit apps.”

A Set Of Apple Watch Example Projects For Learning WatchKit

Wenderlich tutorials: Getting Started and FAQ and Tables and Network Requests and More Tables, Glances and Handoff

FancyPixel / gulps: “is an open source app for iOS and Apple Watch that lets you keep track of your daily water consumption.”

Tutorial: Sharing Data between WatchKit & your App, with Realm

Create an Apple Watch Game with Xcode and Watchkit

“My Biggest WatchKit Mistake”; More “WatchKit Mistakes”

Watchkit and iOS App Messaging with openParentApplication

Icons for Apple Watch – The Definitive Guide

Design for Wearables: “Learn to design delightful wearable experiences by going step-by-step through the process of designing an  Apple Watch app”:

  1.  Apple Watch Vision & Design Principles
  2. User Research & Discovery
  3.  Apple Watch App Primer
  4. WatchKit App
  5. Glances

“how to use Sketch, After Effects, and Xcode to craft the animation used in the Uber watch app.”

Watchkit: Best Practices for Sharing Data Between Your Watch and iOS App; WatchKit and Sharing App Data

Jared’s Code Signing Tips: Apple Watch Edition

Mike Swanson’s WatchKit Development Tips

pttrns.com now does Apple Watch

WatchKit Controller Life Cycle

WatchKit Image Tips

Open Sourcing the Highstreet WatchKit App

WatchKit Connectivity and File Transfers

watchOS-2-heartrate: “watchOS 2.0 healthkit, heartrate streaming, start workout session”

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Stand Back and Deliver

Now here’s some awesomeness topped with awesome sauce and a side of awesome for reducing your blood pressure:

KrauseFx / deliver: Deploy screenshots, app metadata and app updates to the App Store using just one command.

What, seriously? Apparently so:

Features

  • Upload hundreds of screenshots with different languages from different devices
  • Upload a new ipa file to iTunes Connect without Xcode from any computer
  • Update app metadata
  • Easily implement a real Continuous Deployment process
  • Store the configuration in git to easily deploy from any computer, including your Continuous Integration server (e.g. Jenkins)
  • Get a PDF preview of the fetched metadata before uploading the app metadata and screenshots to Apple: Example Preview (Yes, those are screenshots taken for all screen sizes)

Yeah, we’ve been in deployment-challenged places where we really, seriously, needed that tool…

h/t: iOS Dev Weekly!

UPDATES:

@KrauseFx seems to have the mission Make Everything Deployment-Related Work — also check out

KrauseFx / sigh: “Because you would rather spend your time building stuff than fighting provisioning.”

KrauseFx / snapshot: “Create hundreds of screenshots of your iPhone app… while doing something else.”

KrauseFx / frameit: “Want a device frame around your screenshot? Do it in an instant!”

KrauseFx / PEM: “Tired of manually creating and maintaining your push certification profiles?”

KrauseFx / produce: “Create new iOS apps on iTunes Connect and Dev Portal using the command line.”

… and all of the above are now connected into fastlane:

fastlane_text.png

fastlane lets you define and run your deployment pipelines for different environments. It helps you unify your apps release process and automate the whole process. fastlane connects all fastlane tools and third party tools, like CocoaPods and xctool.

So that makes … everything pretty easy, really!

homebrew-cask: “A CLI workflow for the administration of Mac applications distributed as binaries.”

quick-look-plugins: “List of useful Quick Look plugins for developers.”

itc-api-docs: “The unofficial documentation of the iTunes Connect JSON API.”

Notes on the Developer Portal. For Dummies.

Convenient Build Settings

fastlane 1.0

Stencil Xcode Plugin “is an Xcode plugin that provides the ability to create custom file templates and use them in your project to create new files groups.”

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Hakawai And Away

This is well worth taking a look at if you’re outgrowing UITextView’s functionality, LinkedIn is the latest company to kick out some awesome source to the community:

Introducing Hakawai – a powerful, mentions-enabled text view for iOS

Text Transformers

Hakawai provides block-based APIs for working with the contents of a text view. Text transformers are methods which take in special blocks. These blocks always take as an argument an attributed string (representing the initial state of the text), and return another attributed string (representing the final state of the text). Hakawai also supports attribute transformers, which work similarly…

Abstraction Layer

The experimental Abstraction Layer feature is a way to provide text view users with a higher-level change notification API than currently offered by the built-in UITextViewDelegate. There are five main types of notifications, each with associated data…

Extras

Hakawai comes with a host of extras, including (but not limited to):

  • An API for easily adding and removing accessory views from the text view
  • An API for temporarily locking the focus of the text view to the top or bottom of the text view
  • An API for rejecting autocorrect suggestions, and for working with the text view’s autocorrection, auto-capitalization, and spell checking state
  • A convenience API for working with characters and words at a given location
  • A custom text container and layout manager
  • Support for custom text formatting through custom attributes, including a pre-built attribute showcased in the mentions plug-in

Plug-ins

Hakawai supports plug-ins, which are code modules that can be selectively activated and deactivated at run-time to provide the text view with additional functionality…

Mentions

Mentions is a plug-in for creating ‘mentions’, annotations in a text view which might correspond to names of individuals or entities…

OK, that’s some serious UITextView enhancement. Check it out on github!

(And while you’re in the LinkedIn neighbourhood over there, background fetch scheduling library Selene is worth a gander as well.)

h/t: ManiacDev!

UPDATES:

raulriera / TextFieldEffects: “Custom UITextFields effects inspired by Codrops, built using Swift”

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Stylish Setup: KZBootstrap And Fabric

We’ve scattered here and there various references to goodies that make managing your Xcode project easier and/or more reliable, but here’s a particularly sweet-looking collection of most all the best bits we’ve noted plus some new clevernesses:

krzysztofzablocki / KZBootstrap: “iOS project bootstrap aimed at high quality coding.”

Each configuration can be put side by side on same device, and you can clearly distingiush each build. Easier to find issues across different version and branches…

Automatically generate macro for current developer, that way a team can have different code paths while they are working on features, or different logging levels. Without git changes.…

Often when working with big clients, you need to have multiple environments for Staging / Production / QA etc. They usually differ in some kind of configuration … Environments can be changed without reinstalling application, even while it’s running…

assertions when UIKit is layouted/displayed on background thread, so you can fix your code…

Let’s put it this way, even if you’re not particularly interested in adopting all the goodies here wholesale, it’s a useful exercise to go through all the various capabilities and understand them for when they or something along their lines might prove useful. As well as the various source references:

And while we’re on the subject of setting up new projects, if you haven’t looked at Twitter Fabric yet we’d recommend that’s a good thing to do; as Crashlytics is the only third party service we regard as an absolute necessity for any project at the moment, and if the other services Fabric provides are as competently executed and easy to manage as Crashlytics is, well we for one welcome our new Twitter overlords!

UPDATES:

Speeding Up Custom Script Phases

futurice / ios-good-practices: “Good ideas for iOS development, by Futurice developers.”

indragiek / swiftrsrc “generates Swift code for accessing elements of asset catalogs, storyboards, and color lists in order to avoid the error-prone practice of hardcoding strings into your code. It is heavily inspired by Square’s objc-codegenutils, which you should definitely look into if you’re working on an Objective-C project.”

mac-cain13 / R.swift: “Tool to get strong typed, autocompleted resources like images and segues in your Swift project.”

Natalie – Storyboard Code Generator

a convenient way to access child controllers inserted into Storyboard container views

13 Xcode Tips That Will Help You Conquer Xcode; Spicing Up Xcode; Xcode 6 Tips: Vector Images, Code Snippets and Many More

Extend Xcode with Text Services

Tool: Xcode Plugin Adding An Action Bar For Nearly Every Built-In Xcode Action And More

Xcode Plugin Listing – Quality Xcode Plugins

The Unofficial Guide to xcconfig Files

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