Re: reloading IKImageBrowserView in an IBAction
Re: reloading IKImageBrowserView in an IBAction
- Subject: Re: reloading IKImageBrowserView in an IBAction
- From: Claus Guttesen <email@hidden>
- Date: Wed, 4 Mar 2009 06:35:11 +0100
> I read the excellent article 'Image Kit Programming Guide' at
> http://developer.apple.com/documentation/graphicsimaging/Conceptual/ImageKitProgrammingGuide/Introduction/chapter_1_section_1.html#//apple_ref/doc/uid/TP40004907-CH1-SW1
> and have my ImageBrowser working. I want to use it as the basis of an
> image-uploader and would like to visualize the upload-progress by
> removing the first image. I have connected a button to an IBAction and
> can remove the images one by one.
>
> I changed the 'if' to a 'while' but it doesn't animate removals one by
> one but is waiting with [mImageBrowser reloadData] until all images
> are removed (perhaps IBAction blocks it?) and remove all images at
> once.
>
> How can I make the [mImageBrowser reloadData] refresh within the while-loop?
Answering my own question! :-)
Another thread (regarding nstimer) put me on the right track. Reading
about nstimer suggested the use of nsthread, so wrapping the removal
of images into a thread solved my issue:
-(void)removeImages:(id)sender {
while ( more images to remove ) {
[mImages removeObjectAtIndex:0];
[mImageBrowser reloadData];
etc.
}
}
- (IBAction)listImagesButtonClicked:(id)sender {
NSThread *myThread = [[NSThread alloc] initWithTarget:self
selector:@selector(removeImages:) object:nil];
[myThread start];
}
--
regards
Claus
When lenity and cruelty play for a kingdom,
the gentler gamester is the soonest winner.
Shakespeare
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