nstimer

问题 Greeting !! The following codes are now I am doing : BOOL bJobDone = NO ; bBrickDropDone = NO ; //global var here !! NSTimer* timer = nil ; while(bJobDone==NO) { if(timer == nil) { timer = [NSTimer scheduledTimerWithTimeInterval:0.3 target:self selector:@selector(dropBrick:) userInfo:nil repeats:YES]; } if(bBrickDropDone==YES) { bBrickDropDone = NO ; [timer invalidate] ; timer = nil ; if([self MarkBrickBomb]==YES) { bJobDone = NO ; [self dealBomb] ; if([self AllClean]==YES) { bJobDone = YES ;

问题 ...continuing question How to set Action for UIButton in UITableViewCell I have NSTimer working in singleton. There is only 1 timer, but it contains a Dictionary with several items which contains time values. Every minute timer decrements 1 from time value of all items in dictionary. The dictionary's structure is: Key: "1", Value: Array with objects NSString, NSInteger (time value) TimerCell is a tableViewControllers's cell. UITableViewController appears in UIPopoverController. So I would

问题 This is my code for my stopwatch. It all works except for the lap button function. How would i be able to implement a lap time where when the ib action "lap" is pressed it would store the current time in an array and list the lap times on the view? I have already tried to create a database but this seemed far to complex for something of this nature. #import "FirstViewController.h" @implementation FirstViewController @synthesize start; @synthesize stop; @synthesize lap; @synthesize reset;

问题 This is my code for my stopwatch. It all works except for the lap button function. How would i be able to implement a lap time where when the ib action "lap" is pressed it would store the current time in an array and list the lap times on the view? I have already tried to create a database but this seemed far to complex for something of this nature. #import "FirstViewController.h" @implementation FirstViewController @synthesize start; @synthesize stop; @synthesize lap; @synthesize reset;

问题 So I've got two timers, one that increases the score and one that spawns enemies. I used a notification to invalidate the timers, and then I'm using another one to recreate the timers. When I quit and then open the app, there are two sets of enemies being spawned on top of each other. I think timerRecreate = true and also the regular timers in GameScene are also being called. GameViewController.swift file: class GameViewController: UIViewController { override func viewDidLoad() { super

问题 I've heard it mentioned elsewhere, one cannot programmatically hook into the phone call area of an iPhone using the current SDK. I'm looking to learn iPhone development and Obj C, with the end goal of creating a call timer app that runs in the background and alerts the user when a call has gone on too long. Is it even possible to hook into methods liek that? 回答1: No. Your app will be interrupted when the user receives a call, and your code will not be allowed to run while the user is on the

问题 This question already has answers here : iPhone CLLocationManager updates every 0.5 seconds (2 answers) Closed 5 years ago . I want to get location updates exactly once per second. This interval is important for an animation I want to create to keep true-to-life speed over the ground. I understand that [myLocationManager startUpdatingLocation] will automatically poll "didUpdateToLocations", but it is not quite exactly once per second. Is there any way to use NSTimer to get my location exactly

问题 I have a problem in my code. I want to launch the thread but when it is launched they can't start a NSTimer istruction. Can you help me? -(void)detectionMove:(NSTimer*)timer{ int indexArray = [[[timer userInfo] objectForKey:@"arrayIndex"] intValue]; // do something } -(void)callDectectionMove:(NSNumber*)arrayIndex{ NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init]; NSMutableDictionary *myDictionary = [[NSMutableDictionary alloc] init]; [myDictionary setObject:arrayIndex forKey:@

问题 I am getting latitude, Longitude, Altitude, Accuracy, Speed from Location services. I want to update all this information every 30 sec. For this purpose I've used a NSTimer: [NSTimer scheduledTimerWithTimeInterval:30 target:self selector:@selector(locationUpdate:) userInfo:nil repeats:YES]; which I've put in the viewDidLoad method. It shows an output first time, but the second time, when the timer invokes this, it shows this error: 2011-08-02 13:17:00.141 CoreLocationAssign[1120:207] This is

问题 Hello I am able to fade an image out automatically. How would I manage to fade the image IN automatically. Here is my code. .h @property (assign) IBOutlet UIImageView *cbizFadeImage; .m - (void)viewDidLoad { //Fade Image Out CGRect aboutNicheImageFrame = cbizFadeImage.frame; aboutNicheImageFrame.origin.y = self.view.bounds.size.height; // iOS4+ [UIView animateWithDuration:0.5 delay:2.0 options: UIViewAnimationCurveEaseOut animations:^{ cbizFadeImage.alpha = 0; } completion:^(BOOL finished){