I am trying to write an iPad app that loads an image from a URL. I am using the following image loading code:
I am working on a design of an iPhone app.I have a pretty intense process to kick off, defined at a high level as follows:
In my UIViewController I want to add a UIBarButtonItem in the Toolbar, but the new Button doesn\'t appear. What am I doing wrong?
Im using NSOperation to do a task: download some files with NSURLConnection and then m开发者_如何学Cerge files that spend much cpu and memory
I\'m having a really hard time when trying to cancel requests in an NSOperationQueue. Before deallocating my \'engine\' object, I call a cancelOperations method to cancel everything in the queue, so
Hi I am trying to create a NSOperaion Queue to download a bunch of PDF files. But it doesnt work. The delegate methods dont get called for NSURLConnection since i put them in NSOperation queue.... 开发
I have some NSOperations subclasses that handle CoreData imports. I believe i\'ve ticked most of the non-main thread issues
I have NSOperationQueue with some NSOperations in it (NSInvocationOperation开发者_C百科s, in particular). This operations do some calculations and change states of UI elements accordingly (of course,
The Problem I run my unit tests. At one point, I wait using: [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeInt开发者_运维技巧ervalSinceNow:1]];
The Problem I have an NSOperationQueue called logEntryGeneratorQueue I want to wait until all operations on the queue have completed