Question

我刚刚开始学习ios编程。

我想在应用程序启动时显示特定大小的模态窗口。所以，在我的视图控制器中，我编写了这段代码。

-(void)viewDidAppear:(BOOL)animated{

    ModalViewController *modal;
    modal = [[ModalViewController alloc] init];
    modal.modalPresentationStyle = UIModalPresentationFormSheet;
    modal.view.frame = CGRectMake(0, 0, 100, 100);

    [self presentViewController:modal animated:YES completion:nil];
}

使用此代码，模态窗口会显示，但是，它显示的大小适合屏幕尺寸。

我希望我的模态窗口显示我设置的大小。

我怎样才能让它发挥作用？

非常感谢你!!

Answer 1

尝试

- (void)viewWillLayoutSubviews{
    [super viewWillLayoutSubviews];   
    self.view.superview.bounds = CGRectMake(0, 0, <width>, <height>);
}

或

ViewController.modalPresentationStyle = UIModalPresentationFormSheet;
ViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:ViewController animated:YES completion:nil];
ViewController.view.superview.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;
ViewController.view.superview.frame = CGRectMake(
                                                                    // Calcuation based on landscape orientation (width=height) 
                                                                    ([UIScreen mainScreen].applicationFrame.size.height/2)-(320/2),// X
                                                                    ([UIScreen mainScreen].applicationFrame.size.width/2)-(320/2),// Y
                                                                    320,// Width
                                                                    320// Height
                                                                    );

或尝试用此

替换最后一行

ViewController.view.superview.bounds = CGRectMake(0, 0, 320, 320);

Answer 2

你可以试试这个：

-(void)viewDidAppear:(BOOL)animated{

ModalViewController *modal=[[LoginViewController alloc] init];
modal.view.frame = CGRectMake(0, 0, self.view.frame.size.width , self.view.frame.size.height);
modal.modalPresentationStyle = UIModalPresentationFormSheet;

[self presentViewController:modal animated:YES completion:nil];
}

希望这个帮助

如何设置模态窗口的大小

2 个答案: