UIAlertController message 靠左显示
遍历UIAlertController实例的view的子视图，子视图title和message嵌套了多层父视图下面是取title和message的父视图的代码：UIView *subView1 = alert.view.subviews[0];UIView *subView2 = subView1.subviews[0];UIView *subView3 = subView2.subvie
