When you add a UIButton as a subview to UIImageView, it will not correspond to touch events automatically, UIImageView’s userinteraction property needs to be set
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Tag Archives: cocoa framework
(Objective C) Enable UIButton inside UIImageView
Posted in Objective-C Also tagged development, ios, objective-c, programming, touch, UIButton, UIImageView Leave a comment
Scaling an image in Objective-C (Cocoa Framework)
The UIImage class can be used to represent an image. The following snippet scales an image according to a size which is provided with a CGSize parameter. + (UIImage *)scale:(UIImage *)image toSize:(CGSize)size { UIGraphicsBeginImageContext(size); [image drawInRect:CGRectMake(0, 0, size.width, size.height)]; UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return scaledImage; }
Posted in Objective-C Also tagged CGSize, development, graphics, images, ios, objective-c, programming, scale, scaling, thumbnails, UIImage Leave a comment
Run a method in a separate thread in Objective-C (Cocoa Framework)
In some situations, performing operations in a single thread can cause an application to appear as if it is hanging. For example, when searching with autocomplete enabled within a large amount of records in a database . The user is typing and the application is performing a computationally complex operation at the same time (searching [...]
Posted in Objective-C Also tagged ios, iPhone, keyboard handling, method, NSThread, objective-c, searching, selector, separate thread, thread, threading 1 Comment
Toggle iPhone network indicator in status bar
Toggle iPhone network indicator in status bar //show [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; //hide [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; http://codesnippets.joyent.com/posts/show/12742
Posted in Objective-C Also tagged development, indicator, ios, iPhone, iphone network, programming, Status, status indicator, UIApplication Leave a comment
Simple alert box on iPhone
Simple alert box on iPhone UIAlertView *someError = [[UIAlertView alloc] initWithTitle: @”Network error” message: @”Error sending your info to the server” delegate: self cancelButtonTitle: @”Ok” otherButtonTitles: nil]; [someError show]; [someError release]; http://codesnippets.joyent.com/posts/show/12744
Posted in Objective-C Also tagged alert, cocoa, development, ios, iPhone, network error, programming, someError, UIAlertView Leave a comment
Animate A Fade-Out Of A NSWindow With Objective-C
Animate A Fade-Out Of A NSWindow With Objective-C – (void)fadeOutWindow:(NSWindow*)window{ float alpha = 1.0; [window setAlphaValue:alpha]; [window makeKeyAndOrderFront:self]; for (int x = 0; x < 10; x++) { alpha -= 0.1; [window setAlphaValue:alpha]; [NSThread sleepForTimeInterval:0.020]; } } http://codesnippets.joyent.com/posts/show/12745
Posted in Objective-C Also tagged animate, development, Fade, lt, NSWindow, objective c, programming, window Leave a comment
(Objective-C) Basic NSTableView Control Functions (Cocoa Framework)
Basic NSTableView Control Functions
Posted in Objective-C Also tagged cocoa, development, nstableview, objective-c, programming, string array, tableview, valueToDisplay Leave a comment
(Objective C) Play a sound file
// Play sound //To load sound file. +(void) playSound:(NSString *)fileName { NSString *path = [NSString stringWithFormat:@"%@/%@",[[NSBundle mainBundle] resourcePath],fileName];</code> <code>//declare a system sound id SystemSoundID soundID; //Get a URL for the sound file NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO]; //Use audio sevices to create the sound AudioServicesCreateSystemSoundID((CFURLRef)filePath, &soundID); </code> <code> //Use audio services to play the [...]
Posted in Objective-C Also tagged audio, development, objective-c, Play, playsound, programming, sound id, soundID Leave a comment
UIWebView to display web content (Cocoa Framework)
UIWebViews can be used to display web pages (for example, within iPhone applications). The snippets below demonstrate a view controller to display http://snipd.net .
Posted in Objective-C Also tagged controller, delegate, iboutlet, ios, iPhone, objective-c, uiwebview, view, webview Leave a comment