I've tried some code from each of these questions: How to make one color transparent on a UIImage? How to mask a UIImage so that white becomes transparent on iphone? but have come up unsuccessful, unfortunately working with Core Graphics and images is not my strong suit. How would I go about accessing a UIImage's raw data and changin...
Is there a way to find ypos in a UITextView, or/and find wich row that currently marker is active? Regards. ...
I'm upgrading iPhone app and so far everything is going well (managed to resize screen display for most forms). However, I can't solve one problem - the touch is detected only in old, 320x480 region. Any ideas how can I solve that? Thanks EDIT: Here are the results when code for fetching superview bounds executes: CGFloat wdth = self...
I have two UITabBarControllers in my mainwnidow.nib wired to my appdelegate. In my app delegate, I can load either one: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //either [window addSubview:tabBarController.view]; //or [window addSubview:tabBar2Controll...
How would I smooth a line (UIBeizerPath) or a set of points? Right now it draws it jagged. I read about spline interpolation, could anyone point me to an implementation of this in cocoa or C or give me an alternate line smoothing algorithm. ...
I would like to change the blue color of the UISwitch in iPhone SDK to another color but there is not a tintColor property for this control. Is this possible? ...
I am trying to make an if statement which will check whether the users touch is within a UIButton's bounds. I thought this would be an easy affair as UIButton is a subclass of UIView, however my code doesn't seem to work. This is the code I have been using. - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { NSArray *...
When my model changes I want to animate changes in UITableView by inserting/deleting rows. For that I need to know the ordinal of the given row (so I can construct NSIndexPath), which I find hard to do in better-than-linear time. For example, consider that I have a list of addressbook entries which are manualy sorted by the user, i.e. t...
In the Maps app, when you press the tracking button in the lower left hand corner, it glows showing that it's pressed. This makes it behave like a radio button, and it will un-glow once you move the map. Is there a simple way to but a button into the pressed state? ...
I'd like to use the UIView "sucking" transition (view is "sucked" into a point) referenced here: http://iphonedevwiki.net/index.php/UIViewAnimationState#Using_suckEffect The method above, however, uses private APIs, which makes it next to useless for an App Store app. How can I recreate a similar effect without relying on private APIs?...
Having trouble getting the correct bounds for my iPad application when launching it in landscape mode. I have the proper keys set in my Info.plist file, and my view controllers launch properly in landscape (and portrait, natch). In my applicationDidFinishLaunching: method I'm calling a selector after a 3 second delay, and that method ma...
I'm trying to send an ActionSheet a variable from a button. I can't use the tag property because its being used for something else. I've declared myIndexRow as an instance variable and have: NSInteger myIndexRow = indexPath.row; [deleteButton addTarget:self action:@selector(showDeleteSheet:) forControlEvents:UIControlEventTouchUpI...
I have a scroll view with transparent background that covers most of the screen. It also covers some buttons that still need to be tap-able. How can I make sure that the scroll view doesn't respond to touches in regions where the subview image is transparent? ...
My current code doesnt seem to do anything: CGContextRef currentContext = UIGraphicsGetCurrentContext(); CGContextSaveGState(currentContext); float myColorValues[] = {1.0, 0, 0, .8}; CGColorSpaceRef myColorSpace = CGColorSpaceCreateDeviceRGB(); CGColorRef myColor = CGColorCreate(myColorSpace, myColorValues); CGContextSetShadowWithC...
Below is code that I'm using to swap views MySecondViewController *tempVC = [[MySecondViewController alloc] initWithNibName:@"MySecondView"]; [self presentModalViewController:tempVC animated:YES]; [tempVC passDataWithString:@"a string" andColor:yellowcolor]; How can I get the cool page turning animation (as with iBook or ROAD RAGE SIG...
I'm trying to create a simple form using a UITableViewController as documented in the Apple Developer Documentation here: http://developer.apple.com/iphone/library/documentation/UserExperience/Conceptual/TableView_iPhone/TableViewCells/TableViewCells.html What I'm trying to do is located in the section entitled: "The Technique for Stat...
I have a textfield and a label. When you touch the textfield, the keyboard appears In IB, the textfield's properties are Keyboard: ASCII Capable Return Key: Done I wired the IBOutlet to the label and the textfield. How do I get the keyboard to go away when I'm done entering text. How do I get to copy the text to the UIlabel? thanks...
I have a UIView subclass that overrides UIResponder's touchesMoved: message. I've noticed that when I swipe my finger very quickly across the UIView, my touchesMoved: message only gets called every so often and not constantly getting messaged. Any ideas? Thanks. ...
How do I make a delegate? I have a class called CustomSign. The class has a view associated with it. The view has 2 elements. A textfield and a uilabel. I want to copy the textfields data to the uilabel when you click the done button. Here's my code in the CustomSign.m I don't know how to make it a delegate. -(void)textFieldDidEndEditi...
I know there is a UISlider but does anyone already made RangeSlider ( with two thumbs ?) or knows how to extend the uislider? ...