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我有一个NSTimer
这样的:定期调用Web服务在IOS
[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(sliderUpdate:) userInfo:nil repeats:YES];
-(void)sliderUpdate:(id)sender
{
int currentTime = (int)((newPlayer.currentTime.value)/newPlayer.currentTime.timescale);
slider.value=currentTime;
NSLog(@"%i",currentTime);
song.currentTime=currentTime;
int currentPoint=(int)((newPlayer.currentTime.value)/newPlayer.currentTime.timescale);
int pointMins=(int)(currentPoint/60);
int pointSec=(int)(currentPoint%60);
NSString *strMinlabel=[NSString stringWithFormat:@"%02d:%02d",pointMins,pointSec];
lblSlidermin.text=strMinlabel;
song.strslidermin=strMinlabel;
}
我想要做的,是在每45秒内每次,并调用Web服务:
例:45秒内第一次呼叫,90秒内第二次呼叫等。
我该如何在此NSTimer中执行此操作?