如何执行选择器:withObject:afterDelay:工作?

我目前的工作假设是 -performSelector:withObject:afterDelay:

更具体地说:

- (void) methodCalledByButtonClick {
  for (id obj in array) {
    [self doSomethingWithObj:obj];
  }
}

static BOOL isBad = NO;
- (void) doSomethingWithObj:(id)obj {
  if (isBad) {
    return;
  }
  if ([obj isBad]) {
    isBad = YES;
    [self performSelector:@selector(resetIsBad) withObject:nil afterDelay:0.1];
    return;
  }
  //Do something with obj
}

- (void) resetIsBad {
  isBad = NO;
}

有保证吗 -resetIsBad 直到之后才会被呼叫 -methodCalledByButtonClick 返回,假设我们在主线程上运行,即使 -方法调用ByButtonClick