I am confused why my app is crashing with this error. I have implemented the displayLayer method (for rendering CALayer). The first time this method runs things work fine. But subsequent calls to this is when the error occurs. The error seems to occur when the self.bgColor is being set to the context fill color. INTERESTINGLY... if I c...
Hi there, I'm trying to draw a line on a custom UITableViewCell. When I draw inside the overriden drawRect and use the current graphics context I don't see anything. I know I can't see anything because the draw rect is drawing to the UIView and not the contentView. So my question is, how do I draw to the content view using CG? Say, gra...
I expect this to work based on the docs here: http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocSelectors.html SEL sel = @selector(loadMapType:[ms uniqueTilecacheKey]); "error: expected ')' before '[' token" ...
I've encountered this weird behavior with my iPhone app. It runs fine on the device when being debugged with Xcode, but when it's run on the device when the device is not connected to my computer it crashes almost immediately. Needless to say, I find this a bit disconcerting since I'm not sure how to debug it. Anyone have ideas on what'...
I need to do RSA encryption for that i need to have SecKeyRef object for the public Key i have. Do i still need to add to the Keychain and get from the Keychain as a SecKeyRef ? Is there any way i can convert my publicKey value from NSData bytes to SecKeyref ? Please help Thanks ...
I have a function that creates a UIView with a bunch of UIButtons. Each button calls a function with a string for a parameter. So, in my function I do something like: [button addTarget: [multiRadio objectAtIndex:0] action: NSSelectorFromString([multiRadio objectAtIndex:1]) forControlEvents:UIControlEventTouchUpInside]; H...
Hello all, I heard using sqlite for long data transition from database is not efficient so I am planning to use FMDB for iphone but want to know if core data is better or not? What will be an efficient way to do it. tnx in advance. ...
Hi, I am working with CGLayers, and its blend mode constants, as kCGBlendModeDifference, kCGBlendModeHardLight, kCGBlendModeLuminosity, etc. I would like to build an array out of these constants and use them by index, in an instruction like CGContextSetBlendMode(context, [myArrayOfBlendModes objectAtIndex:x]); but I have two probl...
I need to display ABPeoplePickerNavigationController according to a certain search criteria. I pass a name from my view , i need to display the ABPeoplePickerNavigationController with that name only. How can i do this. Thanks in advance !!! ...
In a nutshell, I am trying to figure out how to scale the geometry (point, line, and polygon) implemented in a custom view (geometryView) on top of MKMapView (mapView). What I did was.. Create DrawMapViewController. Add the UIBarButtonItems (MAP, PT, LN, PG) on the bottom toolbar. When you click on map button, you are able to pan/...
Hi All, I need to change the default blue color selection of table view to some custom color. Is there any way to do that. Help me Thanks in Advance Shibin ...
hi all, i am new to Iphone programming. I want to copy a folder(which contains subfolder hierearchy and files) from resourse folder to application folder. i have no idea about this. Please suggest how can i do this task? Thanks ...
Hi, It is shown that initWithFrame is deprecated with initWithStyle in sdk3.0 and above. But we can still use it without any warning/error. So is it ok to continue using initWithFrame for implementing custom cell in tableview? Thank You. ...
my app use openURL to have a call, but when I end call, it will not return to my app automatic in iphone 3.1 Anyone know that?It's a bug of iphone 3.1? Thank you very much! ...
I have app delegate.h & .m files linked to a Main.Nib. Nib has a window and a tabbar controller which has 4 navigation controllers. Each of these 4 do their own thing inside 4 more Nib's containing tableview controllers etc. The tableview controllers take their data from arrays manipulated in the app delegate. All work fine and i hav...
Which one is cheaper: to develope on top of Symbian or on top of iPhone? Both direct $-figures and time-to-market figures are warmly welcome. ...
i have a view with uiimageview and an UIimage set to it.how do i make image sharp or blur using coregraphics? ...
Hi guys, I'm a beginner programmmer, this is for xcode - iPhone. although i made alot of my iPhone app but i seem to lack some understanding of how a simple communication might work. Specially when I've got 2 ViewControllers. And I wana call one function of a ViewController from another ViewController. Both are under a tabbarControlle...
I want the event when user pressed on copy (pop up menu) in iPhone. ...
Does UIImage ever removes images from its cache? Can I keep a pointer to an image I got from imageNamed: and use it as long as I like or must I always call imageNamed:? ...