iphone - 我想以不同的时间间隔多次调用一个方法

Question

我有一个方法 -(void)showLyrics{} 我想从另一个方法调用它，但在一段时间后，每次连续调用之间的时间调用是不同的。 我就是这样做的

[self performSelector:@selector(showLyrics) withObject:nil afterDelay:2];

[self performSelector:@selector(showLyrics) withObject:nil afterDelay:5];

[self performSelector:@selector(showLyrics) withObject:nil afterDelay:10];

[self performSelector:@selector(showLyrics) withObject:nil afterDelay:12];

有人知道更好的方法吗？

Answer 1

调用一次

-(void)viewDidLoad {
    [self performSelector:@selector(showLyrics) withObject:nil afterDelay:2];
}

做你的事 然后安排下一次

-(void)showLyrics {
    int d=2;
    //do your thing
    d+=3;//or whatever
    [self performSelector:@selector(showLyrics) withObject:nil afterDelay:d];

}