presentModalViewController使用 UIModalPresentationFormSheet，无法改变frame大小

TestViewController *testVC = [[TestViewController alloc] initWithNibName:@"TestViewController" bundle:nil];

testVC.modalPresentati*****tyle = UIModalPresentationFormSheet;

testVC.modalTransiti*****tyle = UIModalTransiti*****tyleCrossDissolve;

[self presentModalViewController:testVC animated:YES];

testVC.view.superview.frame = CGRectMake(0, 0, 649, 397);//it's important to do this after presentModalViewController

testVC.view.superview.center = self.view.center;

注意：/it's important to do this after presentModalViewController

可以按以上方法实现。

用另外一种方式，你用的这种是针对整个controller的，你可以用[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft

// forView:theView cache:YES];

但一般情况下，modal view更适合iPhone，iPad用UIPopoverController。