Marcus Kida

iOS Dev ★ Mac Dev ★ Android Dev ★ Neopunk ★ 8bit Fan ★ Trying not to be a Hardliner ★ Quality since '85

[marcuskida]

warum ist die Banane krumm?

Schon mal 'n Äffchen beim Banane-Essen gesehen? Würde doch komisch aussehen wenn die Banane grade wär!

[marcuskida]

iBeacon ranging and it's background issues

When coming to iBeacon development, it's just a matter of time until you'll get to the point when you're in need to determine wether your Immediately at, Near to or Far away from that neat little Beacon.

Thank Apple there's an API for that in CLLocationManagerDelegate which is called locationManager:didRangeBeacons:inRegion:.

Unfortunately this API does not belong to all the other APIs designate for use in Background Mode. After triggering the locationManager:didEnterRegion: method, ranging will start for about 5 seconds an then quit silently. That's not what we want nor need when trying to successfully determine the user's distance to the iBeacon.

There are lots of discussion about this behavior and over at Stackoverflow, at the point of writing this, I decided to not integrate any further mechanism to let the user decide at which distance the iBeacon triggers it's events because you can never ensure that it will trigger them as you've got very limited time (about 5secs.).

Hopefully there'll be an alternative for that in the future.

[marcuskida]

Geofancy-iBeacon-Sample

Geofancy-iBeacon-Sample - The Geofancy Sample-App to demonstrate the use of Geofancy together with iBeacons

Whenever you're in need of doing some micro-location using iBeacons based stuff, try out my Geofancy-iBeacon-Sample App out not at GitHub

[marcuskida]

Take a peek at my latest project: Geofancy, a simple yet powerful iOS App helping you concentrate on the fancy parts of geofences. Get it now in the App Store

[marcuskida]

How to reindex your Xcode 4 / 5 Projects

If you've every run into the problem of Xcode not being able to find symbols or method definitions of Vendor frameworks, although you're complete sure their existing. Try to delete some of Xcode's DerivedData to start Xcode's Indexing process again.

Quit any running Xcode 4 / 5 instance

Open Finder and navigate to ~/Library/Developer/Xcode/DerivedData

Find the name of your project(s) you'd like to be freshly reindexed

Completely remove the desired directory(ies)

Start Xcode again, the reindex process will begin asap.

Be happy ;-)

[marcuskida]

Debugging objc_msgSend in iOS Projects

Every selector called during an iOS App's lifecycle is being dispatched by objc_msgSend, sometimes it may be helpful to debug those calls.

For this it's neccessary to add a symbolic Breakpoint with objc_msgSend as it's Symbol.

If you're on a arm-based system (e.g. the iOS Device) you should use this Debugger Command action to be executed expr -- (void)printf("[%s %s]\n",(char *) object_getClassName(*(long*)($r0)), (char *)($r1))

on the x86_64 (e.g. iOS Simulator) please use this one expr -- (void)printf("[%s %s]\n",(char *) object_getClassName(*(long*)($rdi)), (char *)($rsi))

As you can see, the difference originates in the different registers (rdi vs r0, rsi vs r1) being used by the different architectures.

[marcuskida]

MagicKit-iOS

MagicKit-iOS is an Objective-C wrapper for libmagic based on MagicKit from https://github.com/aidansteele/MagicKit

Tired of the iOS' file-extension based MIME-Type recognition? Ever wanted to have an (extensible) Framework for recognizing MIME-Types, based on their file's magic-bytes?

Try MagicKit-iOS, this framework uses libmagic to do the whole...well magic!

[marcuskida]

KILocationManager

KILocationManager - A dead-simple, lightweight, CLLocationManager wrapper.

There's a new Kid in town, providing you with the current location. Easy to use and no delegates required. Using Blocks. Check it out and fork it!

[marcuskida]

I'm now officially contributing to the twote.io GitHub repository by creating an iOS App for it. You might not know twote.io, go check it out ;-) It's awsome stuff, ya know.

If you'd like to ocntriubte, go check out our GitHub repository!

[marcuskida]

Today an iOS App which I've developed has been released. Get the App "der kleine reibach" at the AppStore: https://itunes.apple.com/de/app/der-kleine-reibach/id646416194?mt=8

[marcuskida]

KIImagePager now available through CocoaPods

The KIImagePager is inspired by foursquare's ImageSlideshow, the user may scroll through images loaded from the Web

My KIImagePager is out now via CocoaPods and Cocoacontrols (https://www.cocoacontrols.com/controls/kiimagepager), fork it at GitHub (https://github.com/kimar/KIImagePager) and c0ntribute if you like it ;-)

[marcuskida]

I've finally decided to start developing a App Crashlogging App in node.js to receive, store and analyze Crashreports from mobile (and may be desktop) Apps. This node.js App also servers to get to know node.js in conjunction with mongodb.

Fork'it'at GitHub!

[marcuskida]

I've been interviewed by and listed at WebworkerHannover, a brand-new site which presents individuals and companies working at the new-media or web scene.

[marcuskida]

Due to lack of time and as my new "Open App of the Week" (or so to say month) I have released iDTMF to the public. The Sources can be found on the official GitHub Repository. The App has been on the AppStore for quite a time and will be discontinued. Due to lack of time for maintaining it I have removed it from the AppStore. Happy forkin'!

[marcuskida]

I've been using the BWStatusBarOverlay in some of my Apps to visualize a Down-/Upload Progress, as well as other Status-Messages, now an App using this Library has been rejected.

10.1 We found that your app does not comply with the Apple iOS Human Interface Guidelines, as required by the App Store Review Guidelines. The app includes the use of an overlay on top of the UIStatusBar. It may be helpful to review the iOS Human Interface Guidelinesto help ensure your app is in compliance with these terms and conditions. 

The easiest, and at this point, most accurate solution was to replace and removed the BWStatusBarOverlay by an ordinary spinning loader. Seems to me I've got to look out for a new neat mechanism to visualize loading processes without interrupting UX.

[marcuskida]

My iOS App tapebooth has been listed on the doctape's Blog, as well as the other Apps which have been developed during the doctape hackathon. Many thanks goes to doctape for organizing such a great event, see you soon.

[marcuskida]

Kolibri or the hummingbird

Once upon a time, or better in February of 2009, me and a friend of mine started to create our very first iOS (or iPhone OS, as it was called) App.

He, and me too, did not know that this was the beginning of a successful career as a Cocoa Developer.

We both have now decided to put this, very old, outdated, deprecated and bad-ass-coded-app to GitHub as an example of how it should *not* be done, but also as an example of how coding has change due to this period of four years....ladies and gentlemen, please have a look at Kolibri.