我不知道该怎么写这条线。 我所要做的是写一个声明, 声明只写一次, 完成后, 表示自己不会再写一次( 以避免一个不停的循环), 比如白天和黑夜。
我认为需要写的东西是:
if ([nightTime timeIntervalSinceNow] <= 0 && "check if already reset or not"){
// The following process has to be done, but only once
// reset dayTime (for tomorrow)
// stop the current NSTimer
// recreate a new NSTimer for nightTime
}
谁能指点我正确的方向? 我应该用什么?
非常感谢!
使用一面 iI 正在处理Done
if ([nightTime timeIntervalSinceNow] <= 0 && !iIsProcessDone){
iIsProcessDone = YES;
// The following process has to be done, but only once
// reset dayTime (for tomorrow)
// stop the current NSTimer
// recreate a new NSTimer for nightTime
}
当您想要再次调用此进程时, 重置它 。
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