- (void)show
{
if ([UIApplication sharedApplication].keyWindow.rootViewController.navigationController) {
[[UIApplication sharedApplication].keyWindow.rootViewController.navigationController.view addSubview:self];
}else{
[[UIApplication sharedApplication].keyWindow addSubview:self];
}
}
- (void)close
{
priceBlock(priceLable.text.intValue);
[self removeFromSuperview];
}
原文：http://www.cnblogs.com/yunis/p/3913908.html