iOS 如何在视图中添加一个用xib创建的view

NSArray *nib = [[NSBundle mainBundle]loadNibNamed:[pages objectAtIndex:0] owner:self options:nil];

//得到第一个UIView

UIView *tmpCustomView = [nib objectAtIndex:0];

//获得屏幕的Frame

//CGRect tmpFrame = [[UIScreen mainScreen] bounds];

[self.view addSubView:tmpCustomView];