http://www.youtube.com/watch?v=5al6qqRzzQg當我點擊開始超過一次? 將我需要做什麼這個NSTimer爲什麼會崩潰?
#import "FirstViewController.h"
@implementation FirstViewController
-(IBAction)start;{
myticker = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(showActivity) userInfo:nil repeats:YES];
}
-(IBAction)stop;{
[myticker invalidate];
}
-(IBAction)reset;{
time.text = @"0";
}
-(void)showActivity;{
int currentTime = [time.text intValue];
int newTime = currentTime + 1;
time.text = [NSString stringWithFormat:@"%d", newTime];
}
- (void)didReceiveMemoryWarning
-1:沒有崩潰日誌。沒有錯誤描述。該視頻甚至沒有崩潰。 – 2012-02-09 15:52:27
如果你真的閱讀代碼,問題很明顯。 – 2012-02-09 15:53:56