在A頁(yè)面push到B頁(yè)面,用屬性傳值,在B中viewDidLoad打印得到的卻是nil(但是在viewWillAppear中是有值的)
BViewController * b = [[BViewController alloc] init];
//類似于調(diào)用了b.view.backgroundColor = [UIColor whiteColor];
b.name = @"panda";
[a.navigationController pushViewController: b animated: YES];
是因?yàn)樵趥髦抵罢{(diào)用了B頁(yè)面的view,使得在傳值之前就調(diào)用了B頁(yè)面的viewDidLoad,傳過去的值就是nil了
