xcode4.2

问题 I like to try to completely take over the area where the NSToolbar resides so I can put my own custom controls, views and background. The advantages of using this area are: Any sliding panels appear below the toolbar area instead of just the title bar. In Lion, the toolbar area comes down along with the menu bar when the mouse is at the top of the screen. I have tried using a borderless window, and implementing my own custom views within it but unfortunately I lose the above advantages as

问题 I am new in iOS developement.When I press the stopwatch start button I want to display the timer like counter token effect.I have attached image for your reference.I have done to display secs and minutes but I dont know, How animate autoscroll effect? How can I do this? When the counter is moving it shouldn't jump from one number to another number, instead it should move from one number to next number smoothly, just like the petrol pump meter. Thanks 回答1: You need to manually scroll tableView

问题 My project use ARC. I tested with the code below: NSString __weak *string; @autoreleasepool { string = [NSString stringWithString:@"AAA"]; } NSLog(@"string: %@", string); I think it output as: string: (null) but it actually output: string: AAA I don't understand it. What is the effect of __weak? EDIT: And this code below: NSString __weak *string; NSString __strong *str; @autoreleasepool { str = [NSString stringWithFormat:@"%@", @"AAA" ]; string = str; } NSLog(@"string: %@", string); It also

问题 I got an exception I can't back trace. I would like to know where the exception is thrown. Is there an option for that in xCode 4.2? As you can see the call stack is not much of a help. The only thing I know is that Iam trying to access an item in a NSArray at a faulty index. All ideas are welcomed. Thanks! 回答1: Set a breakpoint on objc_exception_throw and that will stop the program on that message. EDIT ... Or just set the Exception Breakpoint in Xcode. Too used to doing this stuff directly

问题 In my Xcode 4.2 storyboard, i have 2 UIViewControllers , This one time and In band camp In This one time , i have a UIButton with "silly name" on it In In band camp , i have a UILabel with "label" on it Considering that we're dealing with 2 separate classes AND we're in Xcode 4.2 using storyboards (where transition between views is setup via a segue) how can i pass "silly name" from view controller This one time to the label in view controller In band camp ?" 回答1: Set the identifier of segue

问题 I'm trying to mimic the facebook ios side menu and have it working however the issue I am having is that I cannot send the sidemenu to the back as discussed in another question on SO iphone facebook side menu using objective c. I'm not using the library suggested but instead using the code that was suggested. I have - (void)viewDidLoad { NSLog(@"View Did Load is running"); activitySpinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

问题 i develop a calling program in the below way. my main aim is enter the number in textfield and whenever i press the call button it convert into the integer and then perform calling action.in xcode is there any possibility to create a code for outgoing call? And is there any possibility to block the incoming calls? i am writing the code below way. my .h file is @interface mytextViewController : UIViewController { IBOutlet UILabel *enterphonenumber; int currentNumber; } @property(nonatomic

问题 I have searched for topics specifically to this question but have not found anything close to my experience. Forgive me if I have overlooked the answer. I am familiar with GDB and exception points, break points, etc... but the following test of debugging in GDB vs LDB left me without a plausible response. Global Test Values Xcode 4.2.1 New Single Window Project (Default template w/no changes) Arc Enabled Storyboard Enabled Case 1 - GDB Debugger Exception Breakpoint Values: Exception - All

问题 This is a simple question that has been bugging me. In XCode 4.2, is there anyway to display the git branch that is currently being edited? I know I can see this from the organizer (or do it from the command line), but what I want to see is the branch name up there in lights next to the project and file name in XCode itself - which is the tool I use 99.9% of the time. 回答1: From what I can see from "XCode4 User Guide", the organizer view remains the only way to quickly see the current branch

问题 Is the use of storyboards in Xcode 4.2 production ready and recommended? That is, would iPhone/iPad developers that have used storyboards recommend (for native iPhone/iPad apps) to definitely use storyboards? Or are there some gotchas and issues still with the concept? P.S. Also do storyboards assist in getting a Universal Application designed/working? 回答1: This depends, for the most part, on your target audience. The only potential deal-breaker is the fact that using storyboards requires you