I want to apply the Undo & Redo operations in my app.
I read the apple document as well as googled it but not get the proper solution.
In my app I apply lot of image operations on UIImage & I want to store each state & apply Undo -Redo accordingly.
How to use UndoManager? How it Works?
Please share some links regarding this or links for tutorials of undo manager.
If anyone knows it, then please help me.
Thanks in advance.
I recommend you to go through the tutorial here. Hope this helps you out. Enjoy.
Related
I am working on an app with have requirement to give "Droste Effects" on image.i did search on Google more but not find programming solution for this effects.the effect example in there below.
http://apping.me/ios/4eb514ba8491783f5b0001e2/droste+vision.html
http://www.pmavridis.com/iDroste/iDroste.html
Please provide me suggestion or any tutorials link. How i will do that task?.Thanks in advance.
The Droste effect is a trick made with some intense mathematics and a recursive function. Please read http://www.josleys.com/article_show.php?id=82. If you don't know about recursion please read up http://en.wikipedia.org/wiki/Recursion. Since your request is very specific I doubt there will be many people who happen to have a Droste effect code written in the iphone programming langauge, but the links above should help you understand the math behind creating your own. Good luck.
Is there any particular way to integrate Captch code validation in iPhone application?
is this possible to create captcha? (with or without web-service / any API)
If any kind of external library or any source is required to be imported, then also please let me know.
Any kind of link or source code is available then please suggest me.
Also suggest from where to start to do this, if possible.
Thanks in advance.
I know you probably don't want to hear this, but why do you need captcha on iPhone? It's completely useless since there are no bots or something.
But if you really need it then make some image with white background and then use this code
http://iphonesdksnippets.com/post/2009/05/05/Add-text-to-image-%28UIImage%29.aspx
to add text to the image... once you'll have this, then just check if the entered string is equal to the randomly generated one on the image and you are good to go.
I didn't find any libraries which could be used as a captcha, so I think this is probably the best solution right now.
Cya,
Nick
I just want to add a event manually in my prog from using the kalcalender from add button. But basically i have no idea of that.
https://github.com/klazuka/Kal
I try to understand from the nativecal, But i cant get it.
thanks in advance.
Hopefully someone else can help you on your question, but I assume you've already considered using Apple's EKEventEditViewController. The Event Kit Programming Guide explains is pretty well. I add calendar events in the user's calendar incredibly easily with that, but perhaps you're trying to do something that I don't understand.
I feel good when I use Three20 framework to create a good iPhone application if you didn't try it before, just go here to try.
but the I want your help me to force TTPhotoViewController to reload the image after it initialized. At the moment, it seems load the exist image before and didn't active to viewDidLoad.
Could you help me? or give me any advice?
A better place to ask this question is at the Three20 Google Group
EDIT:
A good way to start is to put some breakpoints in the Three20 source code to see what, and how, code is being run. I have found many undocumented (seriously, what is documented anyway?) hooks and callbacks. If you don't see anything you can use, the best part of Three20 is that it is open source — you can edit the Three20 source to suit your needs.
I need to implement cover flow functionality to our iPhone application. I tried to find sample code online to get started with it, but I didn't have any luck. Can anyone tell me how to implement cover flow functionality or give me a sample?
Thanks In Advance!
Try FlowCover at
http://www.chaosinmotion.com/flowcover.m
the source code provides you with a FlowCoverView realizing the coverflow effect.
You simply need to customize a few delegate methods. Take a look at the example source code, customizing it to suit your needs should be straightforward.
You might also want to check out a library I released at iPhoneDevCamp -- OpenFlow. http://apparentlogic.com/openflow
It is all core animation-based, so it's easy to understand and customize to your needs. AFOpenFlowView is a subclass of UIView.
I included a demo application, and check out the blog entry on my personal website for a bit more information about its use. fajkowski.com
Drop me a line if you have any questions or comments!
-Alex
This one looks promising:
https://github.com/nicklockwood/iCarousel
Seems to be more actively maintained than the other two suggested above.