调整ModalViewController的大小并将其定位在iOS 7的中心位置

Question

我试图通过减少其宽度和高度在iPad上显示modalView,但问题是它不是中心对齐的.在iOS 6中它过去工作正常,但在iOS 7中它不是中心对齐的.

以下是我的代码:

 m_helpQA = [[HelpQAViewController alloc]init];

 m_helpQA.modalPresentationStyle = UIModalPresentationFormSheet;      

 [self presentViewController:m_helpQA animated:YES completion:NULL];
 m_helpQA.view.superview.bounds = CGRectMake(0, 0, 350, 250);//Dimensions of ModalView.

目前我正是这样做的

Answer 1

你需要将框架居中，这样应该可以工作（我没有测试过）。

CGRect appFrame = [UIScreen mainScreen].applicationFrame;
CGRect modalFrame = m_helpQA.view.superview.frame;
modalFrame.size = CGSizeMake(350.f, 250.f);
modalFrame.origin.x = appFrame.size.width/2.0f - modalFrame.size.width/2.0f;
modalFrame.origin.y = appFrame.size.height/2.0f - modalFrame.size.height/2.0f;
m_helpQA.view.superview.frame = modalFrame;

更新代码以纠正拼写错误