However, as this example (below) shows, there’s an easy way to avoid the imageNamed cache, create your own references and clear it when you’d like.

via imageNamed is evil « Under The Bridge.

via UITableView backgroundColor always gray on iPad – Stack Overflow.

I ran into this problem where the view backgrounds were always gray. Confusing!

As the post stats, try one of these:

[myTableView setBackgroundView:nil];
[myTableView setBackgroundView:[[[UIView alloc] init] autorelease];

I tried the first - ignoring the warnings as a test - and it worked. This is for an internal/prototype app so I'll wait to see if I get in trouble before heeding the warnings.   

Living on the EDGE!

Some video including me being interviewed on the upcoming (now past) announcement of the iPhone 4S.

A helpful post about how to do something that was quite easy in Xcode 3…

Lion’s version of Preview comes with a built-in signature scanner that makes signing documents far simpler. In the Annotations toolbar you now have an option to create a signature from your Mac’s built-in iSight camera. All you need to do is use black ink to sign a piece of white paper, align your signature toward the camera using the onscreen guides, and take a snapshot of the signature. (I haven’t used my real signature here, obviously.)

As it states, I never tried it w/ previous versions so I can’t compare. But having a quick way to sign PDFs will be very helpful!

If you add two breakpoints, you should be able to debug these exceptions. To do this, go to Run | Show | Breakpoints and create two global breakpoints (I do them globally because they are so useful in all my applications). The first should be named “objc_exception_throw” and its location should be “libobjc.A.dylib”. The second should be “-[NSException raise]” and its location should be “CoreFoundation”.

Now, if you start debugging your application with breakpoints enabled, it should break on the throw of these exceptions. You should then be able to see the chain of events that led to the exception within the debugger.

via Stack trace or more info on unhandled exception in Xcode/iPhone – Stack Overflow.

It’s quite clear from the Apple documentation that this is possible. As is their wont, they have pages and pages of documentation saying what is possible, but not a single piece of code. And in this case, there is one crucial piece of info missing from their documentation.

via Anna Callahan » Blog Archive » Duck and Resume: a little love from the iPhone music player.

Great post about how to have music fade some, but not completely, when playing another audio file.

Creating your own custom snippets and naming them with shortcuts is just as easy. Select text in the Xcode code editor. Click and hold for a second in the selection and then drag it over to the library. It appears at the end of the library list and is named My Code Snippet by default.

I use a lot of completions, but I probably need to start making some of my own. It takes time to save time.

Every time I do it, I can’t remember the reason I regret it and so I do it again the next time. I need to write it down… here?

[UPDATE: I also always forget that the betas expire... and never at the right time. Like a smoke alarm beeping in the night.]

So I updated to iOS 5 the other day. Regret. Actually, this time it probably wasn’t as bad as usual…

I downloaded the new iTunes, the iOS beta (for iPhone and for iPad) and Xcode w/ the new SDK. I decided to risk my iPad first: I backed it up, installed the new iTunes, updated the iPad, mostly watched slow progress bars for the morning and viola! It worked pretty well – just took a long time. So I decided to do my iPhone too.

Unfortunately, I didn’t have my old install of iTunes to back up my iPhone so I had to back it up w/ the new version of iTunes. Not sure if that was the cause, but when I restored my iPhone to iOS 5 (I say ‘restore’ b/c that’s the process – not ‘update’) it seemed to copy everything twice. Half of my memory on the device was taken up w/ ‘Other.’ Another weird thing, a lot of my apps were missing but when I redownloaded them from the appstore, my data was magically in there. ‘Other’???

There were some other hiccups like 9 times out of 10 when I got a new app, it would just stick on ‘loading…’ w/ a blank icon until I rebooted my phone and then the app would be ready to go.

The real problem actually came in when some apps wdn’t run – they’d crash after loading or soon their after. It wasn’t after certain functionality or anything. I won’t name any names b/c I have no way of knowing if it was the app or the OS, but it was a problem.

I just upgraded to beta 2 and the same apps are doing it so it’s not a done deal yet.

So next time, I hope to read this post and remember to NOT update/upgrade/restore to the new version. I wd say I cd just do my iPad or iPod Touch, but I’d have to upgrade my Xcode (or have the additional install) to use it so it’s still an little bit of issue.

Have you had any interesting experiences w/ using the new beta? Try not to put any NDA related items here.

The app approval process is in place to ensure that applications are reliable, perform as expected, and are free of explicit and offensive material. We review every app on the App Store based on a set of technical, content, and design criteria. This review criteria is now available to you in the App Store Review Guidelines. These guidelines are designed to help you prepare your iOS and Mac OS X apps for the approval process.

via App Store Review Guidelines – App Store Resource Center.

you have to select the device in the schemes menu in the top left where you used to select between simulator/device. it won’t let you archive a build for simulator.

via xcode4 – Xcode 4 – “Archive” is greyed out? – Stack Overflow.

via [Tutorial] Drawing to the screen. – iFans – iPad, iPhone, and iPod touch Fans forums.

I made some changes to the code (not to say you need to): I…

• subclass UIImageView
• change drawImage.image to self.image
• added to init: self.userInteractionEnabled = YES;
• made the double-tap-to-clear a setting and added a similar setting for double-tap-to-erase
• double-tap-to-erase uses CGContextSetBlendMode(UIGraphicsGetCurrentContext(), kCGBlendModeClear); – works like an eraser (otherwise use CGContextSetBlendMode(UIGraphicsGetCurrentContext(), kCGBlendModeColor);)
• added UIColor and float setter for draw color and alpha (alpha sets self.alpha – works better than setting the stroke alpha)
• use [strokeColor setStroke]; to set the stroke color
• extracted out the context drawing into a method and call it w/ whatever the end point is (either currentPoint or lastPoint)

The result is a UIImageView subclass that takes a color and alpha and optionally either clears all or toggles erase mode w/ a double tap.

via code signing – iPhone Entitlements problem with XCode 4 for Ad Hoc distribution – Stack Overflow.

This open-source application maps the information that your iPhone is recording about your movements. It doesn’t record anything itself, it only displays files that are already hidden on your computer.

via petewarden/iPhoneTracker @ GitHub.

Nice showcasing of the device and app using external accessory communication.

Facebook:
1. Create an account (unless you want to use an existing account):

2. Go to http://www.facebook.com/developers
3. Click on ‘set up a new app’
You’ll need to validate the account w/ a mobile number (it will text a confirmation code to that number)
4. Name it, agree to the terms.
5. Pass the human verification
6. Enter whatever details you want.
7. Copy and email me the api key and app secret

Twitter:
1. Create an account (unless you want to use an existing account):
2. Go to http://dev.twitter.com/apps/new
3. Enter the various details and be sure to set the callback url (ask me to send this to you)
Also, leave the ‘application type’ set to ‘Browser’
Set the access to ‘read and write’
4. Send me the consumer key or secret.

bit.ly:
If you want to use bit.ly to shorten the urls,…
1. go to http://bit.ly/account/register and sign up
2. go to http://bit.ly/a/your_api_key and get your api key
3. Send me your username and api key

Amazon announced Cloud Drive and Cloud Player for the web and Android, a new web-based service that lets you store your music and other files in the cloud and access them on the go. Streaming music is possible using a web-based player compatible with the Mac and PC as well as an Android application.

via Amazon launches ‘cloud locker’ music service.

 

 

A Better Finder Rename is the most complete renaming solution available on the market today. That’s why, since 1996, thousands of hobbyists, professionals and businesses alike depend on A Better Finder Rename to organize and maintain files.

via A Better Finder Rename 8: The Batch File Renamer for Mac OS X.