在 iPad 上模态显示 ModalViewController答案

【问题标题】：Presenting ModalViewController Modally on iPad在 iPad 上模态显示 ModalViewController
【发布时间】：2012-06-07 03:13:42
【问题描述】：

我在 iPad 应用的 UISplitVC 中从 MasterViewController 调用此代码：

-(void)viewWillAppear:(BOOL)animated{
//PRESENT MODALVC
ModalViewController *modalVC = [[ModalViewController alloc] initWithNibName:@"ModalViewController" bundle:nil];
[self setModalPresentationStyle:UIModalPresentationFullScreen];
[self presentModalViewController:modalVC animated:YES];

}

但它不起作用。没有出现 ModalVC。

【问题讨论】：

标签： ios ipad modal-dialog viewcontroller

【解决方案1】：

试试这个代码：

ModalViewController *modalVC = [[ModalViewController alloc] initWithNibName:@"ModalViewController" bundle:nil];
[modalVC setModalPresentationStyle:UIModalPresentationFullScreen]; //You set the presentation style of the controller that would be presented, not the presenting controller
//This check is needed, because presentModalViewController:animated is depreciated in iOS5.0 and presentViewController:animated:completion must be used instead. The same is valid for dismissModalViewControllerAnimated and dismissViewControllerAnimated:completion
if([self respondsToSelector:@selector(presentViewController:animated:completion:)])
    [self presentViewController:modalVC animated:YES completion:nil];
else
    [self presentModalViewController:modalVC animated:YES];

如果您的目标是 iOS5.0+，则不需要此检查，您应该只使用 presentViewController:animated:completion 和 dismissViewControllerAnimated:completion

【讨论】：

你好@Graver，我展示了modalView，它显示正常，现在我按下主页按钮并再次打开应用程序，发生的情况是在打开应用程序时，它关闭了我打开的modalView，如何防止这种情况
你一定在某处做。在您调用的任何地方放置断点：dismissModalViewControllerAnimated 或 dismissViewControllerAnimated 并调试以解决。
stackoverflow.com/questions/21726466/…，请查看@Graver