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POUIPickerView stops NSTimer
 

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    <p>I've been working on a small app that contains only two elements, a <code>UILabel</code> and a <code>UIPickerView</code>.</p> <p>The <code>UILabel</code> is updated by an <code>NSTimer</code> to count down from 60 to 0.</p> <p>The <code>UIPickerView</code> only contains an array of data, don't interact directly with either <code>UILabel</code> with <code>NSTimer</code>.</p> <p>My problem is that when I play with the <code>UIPickerView</code> and I scroll up or down, the counter "animation" stops, continues to make its action until you select an option from the UIPickerView.</p> <p>I could not fix this, I do not know if it's a bug with the iPhone SDK or is there any property as becomeFirstResponder that can help me.</p> <p>I'm using iOS SDK 6.1.</p> <p>This is my code:</p> <p><strong>ViewController.h</strong></p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @interface ViewController : UIViewController &lt;UIPickerViewDataSource,UIPickerViewDelegate&gt;{ IBOutlet UIPickerView *uno; NSMutableArray *numeros; NSTimer *timer; IBOutlet UILabel *contador; int num; } @property (nonatomic, retain) IBOutlet UIPickerView *uno; @property (nonatomic, retain) NSMutableArray *numeros; @property (nonatomic, retain) IBOutlet UILabel *contador; @end </code></pre> <p><strong>ViewController.m</strong></p> <pre><code>#import "ViewController.h" @interface ViewController () @end @implementation ViewController @synthesize uno, numeros, contador; - (void)viewDidLoad { [super viewDidLoad]; numeros = [[NSMutableArray alloc] init]; [numeros addObject:@"0"]; [numeros addObject:@"1"]; [numeros addObject:@"2"]; [numeros addObject:@"3"]; [numeros addObject:@"4"]; [numeros addObject:@"5"]; [numeros addObject:@"6"]; [numeros addObject:@"7"]; [numeros addObject:@"8"]; [numeros addObject:@"9"]; uno.delegate = self; uno.dataSource = self; num = 60; timer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(updateCounter:) userInfo:nil repeats:YES]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView { return 1; } - (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component { return [numeros count]; } - (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component { return [numeros objectAtIndex:row]; } - (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { NSLog(@"Hi"); } - (void)updateCounter:(NSTimer *)theTimer { num = num - 1; [contador setText:[NSString stringWithFormat:@"%d",num]]; } @end </code></pre> <p>The app looks like this: <a href="http://imgur.com/ljB93tN" rel="nofollow">http://imgur.com/ljB93tN</a></p>
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    1. USMassimiliano Peluso
    1. USRigter
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    1. COTry the solution provided in http://stackoverflow.com/questions/7059366/uiscrollview-pauses-nstimer-while-scrolling
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      1. USEgor Chiglintsev
    2. CO@EgorChiglintsev **NSRunLoop** it works! Thank you!!
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