Question

xib中上面拖的控件为什么程序执行的时候看

若以下回答无法解决问题，邀请你更新回答

Answer 1

- (void)viewDidLoad
{
[super viewDidLoad];

if(AVc == nil)
{
AVc = [[AVCViewController alloc]init];
}
[self.view addSubview:AVc.view];

if(BVc == nil)
{
BVc = [[BVCViewController alloc]init];
}
[self.view addSubview:BVc.view];