Im using a library for extracting EXIF data from google code.
I assume with iPhone OS 3 that you can use UIImagepicker to do it.
I just want to be able to extract the f-Stop, Shutter Speed and ISO data from the image.
I want to discard the image and just use the information that I store up.
Would I end up extracting the tag data in the viewcontroller.m or h?
This part of coding seems to baffle me a little bit and I cant figure out what to put where.
Can anyone help me out? I still havent figured out XCode all that well.
Whatever executable code you have needs to go in a .m (implementation) file, not a .h (header file). The headers are just for declaring things like classes, protocols, and methods, not for any real processing work.
Are there any tutorials that you know of that explain using exif step by step?
im using the one found here -
http://iphone-land.blogspot.com/2008/06/geo-tagging-images-using-iphone-exif.html
However, for a newbie like me, its not all that thorough because im coming up with errors and i am not sure how to resolve them.
I guess im just shy in all this. need a good place to start
You will likely have trouble getting access to an images metadata if you get it via UIImagePickerController, due to the issues described in this question: UIImagePickerController and extracting EXIF data from existing photos
Related
I have seemingly a lot of text that i need to get into my iphone app. It's not nearly as much as a book or anything but it would take quite some time to type it all out in xcode, and I'm sure thats not the best way. I read you can import an xml file or maybe a .txt, could someone please point me in the best direction, and maybe a tutorial or something to help me get started?
Thanks!
You can bundle any file you want with your application as a resource. Just include it as part of your project, and then you can load it in your app as an NSString* or NSData*, whichever your prefer/whichever is most appropriate to your data type.
You can also transform the data however your would like, and write some new file that contains the transformed information, and then grab the new file and package that one with the app so that the transformation step no longer needs to be run. For instance, maybe you want to parse your text data and prepopulate a Core Data model with it. You could write the code that does this, grab the .sqlite database file that is generated, and then package the database file in the deployed version of your app so that everyone starts out with an already-populated data model. If that happens to be your use-case here.
What you mean by get text into my iphone app? Do you want to show the text in your application? If yes, why don't you just use the this NSString method:
+ (id)stringWithContentsOfFile:(NSString *)path
encoding:(NSStringEncoding)enc
error:(NSError **)error
If your text needs to be formatted, I would recommend you to use webview to load formatted html files.
I tried adding custom entries in the exif dictionaries I received from an image. This didn't work. I'm assuming this is due to the fact exif is a standard that is already defined.
Basically I am trying to create a metadata tag that can be placed in jpegs that will have no character limit.
I read that XMP metadata tags do not have character limits. Is this true? If so how would I create these on the iPhone?
Thank you.
I'm not sure what you've all tried code wise, but Caffeinated Cocoa has a pretty good blog entry on Image Metadata that I've used in an application for a client a while ago that might help you.
Also, the SO post Problem setting exif data for an image looks like it references the Caffeinated Cocoa. Although this question is a little over a year old, it still might help.
Try giving these a shot.
I am a php programmer, but new to zend framework.
I want to upload image, create medium and small(thubmnail) image on fly, I passed a couple of hours searching for a php library [ compatible with zend ] that can make my tasks easy. I dont want to write the code that already exists. thanks for any help.
I want also to know wether Zend_GData can be used to upload files to my server and not on google's. If tried that hack, please tell me how you did it.
any link, or suggestion is welcome. thanks and have a great day.
To upload I use:
http://www.uploadify.com/
To manipulate images (resize, crop, lots of stuff) I use GD wich is often installed with php.
http://php.net/manual/en/book.image.php
I also use http://phpthumb.sourceforge.net/ and its real easy to use.
With all that you should be set.
I need to get data from my database which is a .dbf file. Is it possible to fetch data from the same to the iPhone. How is it done? Please help needed.
I forked https://github.com/davbeck/DBF-Reader/ at https://github.com/woodnathan/DBF-Reader/ to make an iPhone compatible wrapper
There's a little bit of work to do, and I'll be continuing to update over the next few days/weeks to improve it, hopefully it will help you out in its current state
I am developing an app which parses an Xml or RSS feeds of a magazine..The thing is I have to include an offline capability,ie save the previous results which were displayed in each cell(similar to the New York times app) and then display the saved ones when there is no network connection..
Please help me with the codewise explanation using Core data as I was suggested to use it for this particular task.
Will be of great help for me..
Looking forward for your replies
Regards and Thanks
Arun
You probably want to start here.
OH Boy... CoreData.
Good bye 3-4 days of learning how this works. You wont regret learning about core data but there is a LOT.
#OhioDude has a great link. You can also.
1. Xcode > file > New Project. Select Navigation Based App, make sure the coredata checkbox is checked. Viola you have a project with all the core data templates.
2. There is other sample code on Apples website.
One of the tricky and cool things about core data is that you if you deploy a new version you have to write a template of how you app is to roll the data into the new structure.
During dev as I am changing the DB structure, I seem to get errors, so I just do a build>clean. And rename the string for the DB file to something new.
Good luck. Otherwise NSUserDefaults will be fine.
Or just learn about PLIST's you can simply serialize a NSDictionarly object into a PLIST and save it to the disk in a few lines of code. SUPER easy and no stuffing around with CoreData.