-dismissModalViewControllerAnimated:适用于iPhone而不是iPad

[self dismissModalViewControllerAnimated:] 那是悄然的失败。这个项目是在OpenGL背景下使用Cocoa视图控制器的,我认为这与此有关。

由于截止日期太紧了,我没有时间去弄清楚到底发生了什么,所以我只添加了模态视图作为当前视图控制器的子视图,并在完成后将其删除。(是的,一个黑客,但这是你的时间表…)

我想把这个作为一个评论,但我不能这么做。

是应该调用 [[self parentViewController]dismissModalViewControllerAnimated:] 在呈现的视图控制器中,或者在协议中定义一个方法,该方法取消模态视图控制器并在主视图控制器中实现该协议,将其设置为呈现的视图控制器的委托并从中调用该方法。你做得不对。它可能会也可能不会解决你的问题。

更新(注释中没有代码示例):

在MainViewController上,应该有这样的内容

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    // In this case is inside a tableviewmethod, but it could really be an action associated with a button.

    DetailViewController *controller = [[DetailViewController alloc]initWithNibName:@"DetailViewController" bundle:[NSBundle mainBundle]];
    [controller setDelegate:self]; // The delegate is the parent and is assigned, not retained.

    // Modal presentation style is only used on iPad. On iPhone is always full screen.
    // [controller setModalPresentationStyle:UIModalPresentationFullScreen];

    [controller setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];
    [self presentModalViewController:controller animated:YES];
    [controller release]; // It will be deallocated upon dismissal.
}

-(void)dismissDetailViewControllerAndProcessData:(NSDictionary *)data {

    // Do something with the data passed.
    [self processData:data];

    // Dismiss the modalviewcontroller associated with this viewcontroller.
    [self dismissModalViewControllerAnimated:YES];
}

在作为模态视图控制器显示的局部视图控制器上,唯一需要的是这样的内容

-(void)actionBack:(id)sender {

    // Call the delegate method. If you just need to dimiss the controller, just
    // call
    // [[self parentViewController]dismissModalViewControllerAnimated:YES];
    // and don't even bother to set up a delegate and a delegate method.

    [delegate dismissDetailViewControllerAndProcessData:nil]; // Call the parent dismissal method.
}

但如果应用程序在iPhone上运行良好,那么它在iPad上的运行应该和iPhone应用程序一样好。