I am learning and programing an application. I do this project based on what I learned from the book Beginning iphone 3 development. I have two main questions here: I would like to create a multi utility application so I need multiple-view. I have a main view controller which will control switching between views. In this example I have...
Know if it's possible to access the iPhone compass in Safari using JavaScript? I see how the GPS can be accessed, but I can't figure out the compass. Thanks, as always! ...
Hi I store dates in a core data entity attribute, I then display the date in the table cells. I want to group all the cells according to months and only display the relevant dates in the correct sections. I'm using sectionNameKeyPath of the NSFetchedResultsController, but I need to only use the month in the date to group. How can I ach...
I am trying to create a simple app that displays a list of items with check boxes next to each item, then give the user to simply check each box. Nothing (aside from the checkbox image switching) needs to happen when the check box is touched. Each checklist is a seperate NSDictionary contained in a single master NSDictionary. The checkl...
I have developed a view based project in Xcode. It is successfully running in iPhone Simulator. But I want to test this project on real iPhone device to check the behavior of application. Is there any way I can test my application on iPhone device without buying Apple Developer's License? Thanks in advance. ...
Hello, I am using iPhone Connect to link my application to Facebook. Is there anyway to let user join a Page/Group on Facebook, right from the Application? Thanks in advance. ...
How would you change just the width of a UIImageView in objective-c? Currently I'm doing this: imageview.frame = GCRectMake(x,y,width,height); But when I change the width it seems to just change the position rather then change the size. ...
This might be a stupid question, but I was wondering whether or not you can use the Core Data libraries on Linux at all? I'm planning how to build the server side of an iPhone app that I'm working on, and have found that you can use PyObjC to get access to Core Data in a Python environment, e.g. use Core Data in a TurboGears web applica...
I'm sure this is some easy-to-fix issue that I've missed, but I can't figure it out. I've got a grouped table view with 3 sections. I'm using the following code to generate section headers: -(NSString*)tableView:(UITableView*)tableView titleForHeaderInSection:(NSInteger)section { if (section == 0) { NSString *header = @"Header 1"; retur...
So I am using the Three20 library for an iPhone app, and want to use the TTSpeechBubbleShape style for a view. But the triangle doesn't seem to want to draw on the left or right sides. I see in the source that it's a lot of geometry and was wondering if anyone had tackled this or knew how to fix it. ...
Hi, I have a button in a view which refuses to work. I've got in working in a blank, default view application from X-Code, but in none of my applications will it work, instead it gives me the following error. Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[UIViewController showVicInfo:]: ...
Hi, I am trying to execute different things depending on what os the users iPhone is using. Currently I have the below, which says - "if the device is 3.1, post this message" #ifdef __IPHONE_3_1 NSLog(@"this device is 3.1"); #endif But, How can I get it to say - "If the device is 3.1 or higher, post this message" ? ...
There's a video tutorial on u tube that shows how to perform this.It consists of a UIwebview and toolbar button to save the contents.Haven't had any luck making this work.Could someone have a look and see they can make it work.Many thanks in advance. http://www.youtube.com/watch?v=gDPca3JIc_s&feature=player_embedded# //////////////...
I am generating audio programmatically. I hear gaps of silence between my buffers. When I hook my phone to a scope, I see that the first few samples of each buffer are missing, and in their place is silence. The length of this silence varies from almost nothing to as much as 20 ms. My first thought is that my original callback function ...
I have a few questions about Core Location. 1) Should the user refuse permission for my app to use core location, or core location is unavailable for some reason, is there a fallback? (Device Locale, for example?) 2)Can I cache a device's location for next time? Does Core Location do this itself? 3)I really need the sunset time in the...
Hi there! We have a MKmapView with a bunch of Image Annotation where each Image annotation responds to touch by overriding these methods of AnnotationView subclass: -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event; -(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event Our map region is updated using [Mk...
How can I enter RGB or Hex color values for backgrounds in Interface Builder? I can select predefined colors but I would like to manually enter in RGB values. Where can I do this? ...
How to draw line continuous in uiview? I have used below code and it works fine but after drawing line straght when i draw another line then first one gets clear if i do not clear that then they join each other. Please suggest some solution. - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); /...
I want to get only the headers of an URL request. I have been using stringWithContentsOfURL() for all downloading so far, but now I am only interested in the headers and downloading the entire file is not feasible as it is too large. I have found solutions which show how to read the headers after the response has been receieved, but how...
My program looks like this: -(id)init { if ( (self = [super init]) ) { //TargetWithActions *targetActions= [[TargetWithActions alloc] init]; [self countDownSpeed123]; } return self; } -(void)countDownSpeed123 { countDownSpeed = 5.0f; } @end warning: 'TargetWithActions' may not respond to '-countDown...