I am trying to make a slideshow of images from a folder but i don't know how to load the images from a folder in order and then display them onscreen. I am using an NSTimer to switch pictures but it only works if I know the filename for each image.
This is for a program that runs on Mac. I have tried NSFileManager according to other answers I have found on Stack Overflow, but I couldn't get them to work. I am using NSImage to load the image onto the view.
You do not need to do it yourself. Apple created for that (and more) the IKImage Kit. (Read the docs about that.) Here a short part of Image Kit Programming Guide:
A slideshow is a popular way for consumers to view digital images. The IKSlideshow class and the IKSlideshowDataSource protocol provide an easy way for your application to support slideshows of images . . .
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i have hired a programmer to create an iPhone app for me. The purpose of the app is to take a photo and upload it to a server. We want to make a special purpose screen to review the photo before uploading it. This specially developed screen will crucially have zooming functionality.
He claims that after taking a photo, it is impossible to avoid the "use"/"reuse" screen to show up, so now we have two screens to review the photo. First the standard one from Apple, then our own with zoom. Is he right about that? It just sounds so unreasonable that Apple would put such a restriction.
Edit: I mean taking a photo using the camera.
As par Apple's documentation
To perform fully-customized image or movie capture, instead use the AV
Foundation framework as described in “Media Capture and Access to
Camera” in AV Foundation Programming Guide. To create a
fully-customized image picker for browsing the photo library, use
classes from the Assets Library framework. For example, you could
create a custom image picker that displays larger thumbnail images,
that makes use of EXIF metadata including timestamp and location
information, or that integrates with other frameworks such as Map Kit.
For more information, see Assets Library Framework Reference. Media
browsing using the Assets Library framework is available starting in
iOS 4.0
In short yes it is possible check out this sample
[Update]
Use the allowsEditing property on your UIImagePickerController
imagePickerController.allowsEditing = NO;
Previous answer was a bit of a hack to take advantage of a code path that didn't show the buttons but wasn't awesome.
[Previous answer]
You can actually avoid it without going through the hassle of setting up your own image capture from AV Foundation.
Including the following will remove the need to show the "review" screen. All you have to do is put in a few of your own buttons and wire them up to the appropriate functionality.
[self.imagePickerController setShowsCameraControls:NO];
It is a little bit too late I know, but for future reference:
This is far more simple that the answers already provided,
what you are looking for is the allowsEditing option.
imagePickerController.allowsEditing = NO;
That should be enough to avoid showing the "Retake"/"Use" screen after the user takes a picture.
I need to develop a feature into an iPhone app which will allow the user to zoom in very much on an image and display high-quality details of the image without loading the large and loading it online. I've found a example here: developer.apple.com/library/ios/#samplecode/ScrollViewSuite/ but it dont seems to zoom at full details,
And the images are store locally.
I have seem apple developer example like PhotoScroller, scrollviewsuite.
but feels they work differently just cutting the image in tiles.
Is it Possible To access asynchronously chunk of data and render it to view at same time in didReceivedData function delegate.
Please provide some tutorial or example.
Thanks
Avinash
Based on what you have said, PhotoScroller is really what you are describing. It is the only example that I know that can handle HUGE images and only display what is needed. I have used it for 100 megapixel images and it works great.
I would like to create videos that needs to run on an iPad native app. The app needs to show a demonstration of a product through iPad. It needs to be interactive as well. I know we can do these in Flash, since Flash is not supported in iPad what are my options?
I appreciate any guidelines or hints. Thank you in advance
The easiest way to create interactive videos for iOS is to use Apple's HTTP Live Streaming technology. You have to create a video, embed metadata, play it using MPMoviePlayerController or AVPlayerItem, and then display clickable areas in response to metadata notifications.
Metadata should contain coordinates for the element you are tracking, eg: a dress, and a identifier for the product. You overlay this info with a clickable subview that reveals more information about the product. There are several applications of this kind in iTunes, here is one.
Once you get a working product and weeks-time of videos, the most difficult part is to perform motion tracking with the less possible human interaction. One approach is to use Adobe After Effects, another is to code your own solution based on OpenCV.
Some ideas:
You could use an MPMoviePlayerController with no controls, on loop.
Here's a solution I thought of using interactive HTML popover's over the video:
You could have a data store (say an NSDictionary), with playback times as keys.
The values could then be a custom class, which includes all the necessary data for an interactive popover on the video.
Your custom class could look something like this
#interface InteractivePopover : NSObject
{
NSString *snippetTitle;
NSString *htmlData; // could include links etc.
CGPoint popoverDisplayPoint;
// other styling attributes etc.
}
Now, when a user taps the video, it pauses it at the next 'interactive' point (by looking for the next key after the current playback time), and displays (animates on) all the popups, which you set before to show off different parts of the product.
That class might be your data store, then you create another class to handling displaying, animating, controlling, sizing (etc) these interactive popovers. It would create a UIWebView for the HTML. It would also control direction, and indication of the source point for your popover.
This is clearly very expandable because you could put images, embedded content etc into the HTML for these interactive popovers.
Anyway, that's how I would do it.
Though flash will not run on ipad you can still create apps for it with flash cs5 .
Hi i am beginner in iphone programming i am doing a photo gallery app. In which i need to apply swapping of array of images on UIImageView along with zooming action.
can any one help me to do this by providing any sample codes or links..
download try this code, i'm using it and it's well done:
mwaterfall-MWPhotoBrowser
there's also the more complete Three20 Photo (search in github.com or in stackoverflow.com for old question), it has more kind of objects... but is also more complicated to be used...
I have to create a photo gallery app in iPhone. It should function same as the Photos app which is shipped with iPhone. But it should show the images which I package with the app.
UIImagePickerController reads only the following source types.
UIImagePickerControllerSourceTypePhotoLibrary,
UIImagePickerControllerSourceTypeCamera,
UIImagePickerControllerSourceTypeSavedPhotosAlbum
I was thinking of adding the images bundle to the resources group in Xcode and make UIImagePickerController to read them and display.
Looking at the class references I found UIImagePickerController reads only from the resources mentioned above. Which means it can only pick the images from camera roll OR saved photo gallery OR allow user to take a pic and use it.
Does anybody know how to make UIImagePickerController read from custom source type or images?
OR
How to create a photo gallery app in iPhone :-)
Thanks,
AJ
I don't believe it is possible to make the UIImagePicker pick images from your own source. You will have to write the picker yourself (which, performance aside, doesn't seem to hard... Just a couple of UIImageViews in a UIScrollView).
Just today I started a open source UIImagePickerController clone, it is not perfect but it works quite ok. Feel free to fork http://github.com/jeena/JPImagePickerController