Can anyone please suggest me a good sample code for multiple tap zooming image. Thanks.
Apple's ScrollViewSuite sample contains example of zooming on response to taps (it seems it was updated to use UIGestureRecognizer to handle touches so if you're targeting iOS 3.x you'll need to find the older version of that sample).
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I am looking to create my own gestures for my iPad app. I know this can be done but don't know where to start. I read that there is some sample code that can store your custom gestures so you can re use them. Think it was as ajson
I'm looking to draw numbers as custom gestures but any sample code/tutorial where I can get an idea where to start I would be very great full!
Thanks ahead.
The best place to start would be the Event Handling Guide for iOS section on Gesture Recognizers. There's a lot of information there on the different types of gesture recognizers. This should give you enough information on how to create the recognizer(s) that best fits your scenario.
I am curious as to whether or not there is an open source solution to replicate the flash button in the iOS camera applicaiton.
I have seem many other apps use this, but there doesn't seem to be a native way, so I assume there is a common source out there.
It is possible to get the flash button by using UIImagePickerController class, but most of the camera apps out there don't seem to be using this (or perhaps they subclass it, which is against apple's terms).
I am looking for a way to replicate the expanding behavior of the button. Any thoughts?
It doesn't sound too hard.
The way I'd do it is to separate the right curve of the button (as images), and make a UIView that has the left part of the button and the right curve as subviews.
When it's tapped, slide the right curve and animate the extra buttons in.
You could use a stretchable UIImage (see UIImage documentation) and then just animate the frame changing.
In the Apple 2010 WWDC Sample code (downloadable via iTunes, otherwise I'd post it here), there are several sample applications which use this control. They call the class ExpandyButton. I realize I'm answering my question, but hopefully someone out there can find this useful.
While looking for a similar solution to this problem I came across this code which was extremely helpful. Similar to ExpandyButton it fit my needs better.
https://github.com/ddebin/DDExpandableButton
How can an image overlay be applied to a MKMapView? Basically, when you zoom in a specific location, I want an image to appear on top of the map that gives a more detailed view of the location.
I've had a look around and found different types of methods to use. I had a working example for an older SDK using the DrawMapRect function but this no longer seems to work on 4.2.
This is a good place to start...
http://developer.apple.com/library/ios/#documentation/MapKit/Reference/MKOverlayView_class/Reference/Reference.html
I was looking for polygon sample code though.
#omniscian: If you have solved it you should post something helpful for others. This page has a high google rank.
Does anyone know how to do this?
Is anyone able to provide an example? I believe this is out of NDA now as was available in version 4.0 ?
Take a look to AVFoundation framework , specially to avcapture avsession avinputdevice, etc. You can find some listings in the iPhone dev center forums: search "avcapture"
AVFoundation is the framework you want to use to record, modify raw frames, show them, an offcourse add some overlay
If you want to do only overlay then, UIImagePickerController should b enough.
If i understand, what you are trying to do corectly, you have set up video capture someting like suggested by Apple in this Q&A:http://developer.apple.com/iphone/library/qa/qa2010/qa1702.html
From there it shouldn't be much of a Problem to use the method described in this answer:blend two uiimages based on alpha/transparency of top image to blend the preview with your overlay, provided you draw it in a UIImage first. Feed the resulting images to a buffer and save it accordingly.
Though, this method most certainly wouldn't give you a lot of frames per second.
I have implemented one photo application in which i want to implement zoom and pinch zoom effect same as default photo application in iphone.How it possible please help me for this query.thanks in advance.
The UIScrollView component takes care of functionality like that.
Try starting out here :UIScrollView Reference
The ScrollViewSuite (link in the reference) has a example that you can use.