hi, i am writing an application that receives data with items and version numbers. The numbers are formatted like 1.0.1 or 1.2.5. How can i compare these version numbers. I think they have to be formatted as a string first, no? If so, what option do i have to having objective C understand the 1.2.5 is newer than 1.0.1? ...
I have a class. Inside this class I pass an NSOperation into the NSOperationQueue that lives in my global variables. Now my NSOperation is finished. I just want to know that it is finished in my class and to have the operation pass data to that class. How is this typically done? ...
Hi All, Is there any predefined UIViewController/NavigationController in the IPhone API as same as "Info" in "Phone/Mobile" application? For example, suppose I received a call or dialed a number, which is not stored in address book. Then later I wanna see the details of that number, IPhone navigates me to the "Info" view when I click ...
i wan to record the user voice and then play back after some time in objective-c for iphone is there any way to do this. ...
I'm using 10 buttons in my interface and need, from time to time, to change the button's selector. Am I required to use: -(void)removeTarget:(id)target action:(SEL)action forControlEvents:(UIControlEvents)controlEvents before I change the selector or can I just use: -(void)addTarget:(id)target action:(SEL)action forControlEvents:(...
Hi All, Hi I've some questions related to address book. 1) How Can I design some UIButtons, which are as same as in the address book buttons? If you observe all the "Phone numbers" buttons in the Contact's info view, the upper and below buttons only has the curved edges not all the buttons. 2) How can I show the default image (if a ...
So I have a Project with a UITabBarController and a few Navigation Controllers, and I am trying to implement Core Data. Its just not working. I have a bit of a weird setup: UITabBarController -> Navigation Controller -> Table View Controller I have copied all of the Core Data code and added an entity with an attribute ('Event' and 'nam...
i want to play the audio file after the given period of time set by user. ...
Hi, I am using the following piece of code to create a gradient background for a UITableViewCell. While this works perfectly for a plain table cell, the gradient only appears at the left and right corners of the grouped table cell. It is as if the gradient is applied then, the cell is drawn on top of it. Can someone suggest a modific...
i want to send the keypad back after writing in textfield. ...
I'm trying to build a class for handling all sqlite3 work and I've encountered an EXC_BAD_ACCESS which I just can't explain. I am new to Objective-C development and memory management in general so I apologize if this is a stupid question. When initializing the class I get the path to the database file and keep it around: NSArray * docu...
Right now now I'm thinking about getting a playlist through MPMediaQuery and then add the items inside my MPMediaPlaylist to the MPMusicPlayerController using setQueueWithItemCollection. Is there a way to pass the MPMediaPlaylist directly to the player? ...
I am creating an application and I have a customized header of tableview. But sometimes the header gets duplicated. It takes the place of a row in tableview. How do I solve this strange problem? BTW, my tableviewstyle is plain, Header height is 44.0 and the footer height is 0.0. Here is an image how it displays. The header "comments" is...
i am adding folder from other app folder and then put that folder in my app and i import folder files to my app file but i am getting error like no such file or directory while running. ...
I've seen this thread but this is only useful if I wanted the user to pick the volume himself. I wanted my application to change the volume gradually. Thanks. ...
I'm still pretty new to Objective-C coding (as evidenced by this question) and I think I'm not completely understanding how using the retain attribute in a @property declaration works. Here is an example class: @interface Foo : NSObject { NSMutableArray *myArray; } @property (retain) NSMutableArray *myArray; My understanding wa...
Hi All, Im developing a charting application for the iphone using core graphics. My requirement is as follows. I've implemented my all the drawing functions inside the drawRect method. when some update happen in the chart, i need to call [self setNeedsDisplay:true] and it invokes the drawRect method from the begining.(means it executes a...
If instance variables belong to an instance of a class, class variables would belong to an instance of a metaclass, I should think. But my experience with the Objective-C metaclass tells me that this is unlikely. I'm wondering what class_getClassVariable does as opposed to class_getInstanceVariable, and why there is not a class_setClass...
Hi guys. I'm using a UINavigationController to manage my UIViewControllers hierarchy. For one of these UIViewController, i need to change its view bounds programmatically (depending on specific conditions) so i used setBounds and it's working fine. My issue is this : when i change this view bounds, then push another UIViewController to...
Hi, it may be very easy, but I don't seems to find out why is URLWithString: returning nil here. //localisationName is a arbitrary string here NSString* webName = [localisationName stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSString* stringURL = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@,Mon...