iPhone OSC apps, day #1

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Jay, revived a project from back in April (Lighting Matrix for Max) from back when the iPhone SDK was NDA and only beta #3 was out. Well, for my first day of serious iPhone dev, I revived it, made it run with the current version, ripped out the Max/MSP part and inserted OSC instead. Good fun :-)

iPhone dev continues

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My work with the iPhone SDK continues, working on three clients to our backend services at the moment. I'm very much looking forward to blogging about this as it's cleared at work. But as you probably have noticed from my posts, working locally and synchronizing with the back-end is what I believe most iPhone applications are about. Do quick and stuff you need to remember on the iPhone, work out the details from your computer, keep everything in sync. That's why I'm excited about Google's data integration. That's why I'm excited about integrating SQLite. That's why I spend a lot of time working with SOAP integration. And of course, it's all good fun. I'm tempted to say that working with a back-end is a lot easier than doing everything local. At least the satisfaction of seeing the work you do on the little screen influencing the real world is a lot better than it just influencing that screen. :-)

One thing I'm miffed about, though, is the NDA. They've got a 100,000 downloads, and if 1/20t of this is developers, then that's still 5,000 developers. Where are they all? I can't find much going on on discussion boards, forums, mailing-lists or whatever. And Apple is only slowly letting them in to their community. I hope they'll let us in soon, I want to discuss problems I'm having without having people with briefcases coming after me, I want to know what other people are working on, I want the development to be more social. Right now, it's mostly a one-man game, and that'll get old very soon

iPhone SDK questions and comments

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So, two days of implementing ideas, trying stuff out, reading discussions, documentation and watching videos have passed since the iPhone SDK was launched. My dayjob has become developing for the platform, which is great. It's a fun platform to work with and developing for it is quick. I'm really looking forward to Apple delivering those certificates soon so I can try it out on the iPod Touch (no iPhone in Denmark yet).

So that was rant number one, certificates. Why-oh-why do I need them when I do software development? I would also very much like to be able to share my apps with friends, perhaps even beam them wirelessly over to them. And I should be able to do this with a self-signed certificate like with SSL. Self-signed for development, signed by an authority for production, that's a good scheme.

What's up with Bluetooth? Has anyone been able to access it through the SDK yet?

I write applications that want to synchronize with a repository of files on the computer. How can I arrange such a synchronization without making a web service that the user first can synchronize with his computer and then with his ipod/iphone?

Multitasking. Sure, I can save and restore my application for most things. But if I have to download the files I need from the network, the user is going to switch applications. (I'm still looking forward to see how I best should work with webservices) Good thing that
ramond has gotten background-running apps to work, but this will break with Apple's license, so no idea if this would kill the product on the iTunes App store. We'll have to wait and see for that

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The videos refer to the XCode and Cocoa-dev mailinglists on lists.apple.com, but the moderator on the Cocoa-dev list has made it clear that iPhone development related discussions are not welcome

Funny little thing is the metronome app, clearly made by someone who does not play music. The last beat in the group is the accented one in this app. ;-) But it was a nice illustration as some of the first things I want to make are a metronome and a tuner. The tuner is going to be tricky with the floating point instruction set being reduced in the 16-bit Touch set, might have to recompile as ARM. I'm looking forward to seeing it outside the simulator (and finding out if the iPod touch has a microphone ;-) )

How do you unit test these apps? :-)

The apps are sandboxed, so no ssh into the phone without a jailbreak I guess. But ssh clients should be trivial now

So, I'm excited about this and working with it. I'm really looking forward to integrating it with our products at work, and I'm looking forward to writing music apps on my spare time (which is going to be limited until my exam June 9th is over). I guess all of these things will be answered shortly after my exam is done. :-)

iPhone has BSD subsystem

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When Steve Jobs announced that the iPhone would be running OS X, I thought to myself that that's just what he sais: it will have the same userinterface, but he's not going to keep the core there: the BSD subsystem. Looks like he has, though, and now people are SSH'ing into the phone. That suddenly made the whole phone very much more appealing. I'll still need 3G and a decent camera, though. ;-) At the moment, my k800i is doing both camera and MP3s all right, but then again, it has no BSD subsystem. :-)

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