Comments on: Picking Images with the iPhone SDK UIImagePickerController

By: engineer 2008

engineer 2008 — Mon, 29 Sep 2008 01:38:14 +0000

How can one enumerate the photos in the iphone photo libraries - on the simulator and on the actual device. In this “imagePicker” application once a photo is selected if i find the current directory and then run the directory enumerator on this - my objects returned are nil.

By: mike

mike — Wed, 27 Aug 2008 02:54:32 +0000

is it possible to read a pixel value, any pixel on screen, while the camera is open (before the photo taken)? How to do that? please be nice and clear, this is my first week creating iPhone apps…

By: Charles Lloyd

Charles Lloyd — Wed, 30 Jul 2008 01:38:24 +0000

I downloaded the project but it wouldn’t build for me, so I started a fresh iPhone OS “Window Based Application” named PickImage. I copied the source code from the downloaded project into the files created by xcode and it worked right away.

I found that, doing this, the first line of applicationDidFinish…. is unnecessary.

Remove this and it works (and avoids leaking a Window):

self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

By: christopher minson

christopher minson — Mon, 26 May 2008 17:48:54 +0000

Never mind. The call to do this is:

UIImageWriteToSavedPhotosAlbum(image, self, (SEL)@selector(image:didFinishSavingWithError:contextInfo:), nil);

Amazing what one can learn by reading the .h file ;}

By: christopher minson

christopher minson — Mon, 26 May 2008 14:30:13 +0000

Thanks, great article.

Any idea on how to get an image back *into* the Photo Album?

What I would like to do is import an image via UIImagePickerController, modify
that image, and then put the result back into the Photo Album. But I don’t
see any interfaces that allow that.

By: Mac Tyler

Mac Tyler — Fri, 16 May 2008 03:50:55 +0000

Hey this is Mac Tyler the creator of iPhoneDevForums.com, I just wanted to let you know that I am very happy I could help you guys figure out your problem. Stay tuned as we plan on major updates for the site. As alway,s we encourage you to post any comments or questions that you have and we will try our best to answer them!
Thanks,
Mac Tyler

By: Ricket

Ricket — Thu, 15 May 2008 09:45:48 +0000

Sorry to respond to my original post, but I found an answer to my question and maybe it will help someone else out. For Beta 5, this line in the code needs to be commented out:

self.window = [[UIWindow alloc initWithFrame:[UIScreen mainScreen] bounds]] autorelease;

I found the solution via comment #4 on this site:

http://www.iphonedevforums.com/forum/showthread.php?t=85

By: Ricket

Ricket — Wed, 14 May 2008 06:43:24 +0000

I’m having problems getting this demo to work. I’m using Beta 5 and when I compile I get “error: There is no SDK with specified name or path ‘Unknown Path’”. So, I built a new project and transplanted the class from this demo into the new project. The demo launches, but all I see is a white screen. No image picking. (this is in the simulator) Any ideas?

By: Mac

Mac — Sun, 27 Apr 2008 18:29:14 +0000

Just another note to mention here it does not appear that you can attach the the UIImagePicker to anything other than the top window of the application. Doesn’t seem to work correctly as a modelviewController either. =/ This camera thing is getting rather frustrating…

By: Mac

Mac — Sun, 27 Apr 2008 18:09:53 +0000

Good example. I’ve been playing around with this and it works well in the simulator picking from the list.

I added a button on the last view to bring the picker back up and allow the user to pick another image or take another image. While this works fine in the simulator it crashes the app after taking a picture with the camera for the second time.

I was wondering if anyone has actually tried this on the phone yet with the camera… and was able to make picker display and work more than just once in the app. I’m beginning to fear there is a defect still in apples code.