目标c时间延迟

Question

到目前为止，这是我的代码：

- (IBAction) startApproximiteLevel:(id)sender {
[getBackgroundLevel startAnimation:self];
float sample1;
float sample2;
float sample3;
float sample4;
float sample5;
float finalSample;

float charlieSoundVolume = [charlieSoundLevel floatValue];

sample1 = charlieSoundVolume;
sleep(1)
sample2 = charlieSoundVolume;
sleep(1)
sample3 = charlieSoundVolume;
sleep(1)
sample4 = charlieSoundVolume;
sleep(1)
sample5 = charlieSoundVolume;
sleep(1);
finalSample = ((sample1 + sample2 + sample3 + sample4 + sample5) / 5);
self.backgroundSoundChange.floatValue = finalSample;

[getBackgroundLevel stopAnimation:self];

}

但这会阻止我的代码的另一部分更新charlieSoundLevel。关于如何在没有睡眠的情况下做到这一点的任何想法（）？

利亚

Answer 1

查看[NSObject performSelector: withObject: afterDelay:]以在一段时间后在运行循环上启动方法。