iphone - 我怎样才能像 UIActionSheet 一样从屏幕底部呈现一个 UIView？

Question

我希望 UIView 像 UIActionSheet 一样从屏幕底部向上滑动(并保持在屏幕中间)。我怎样才能做到这一点？

更新:我正在使用以下代码:

TestView* test = [[TestView alloc] initWithNibName:@"TestView" bundle:nil];
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.4];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];

test.view.center = CGPointMake(160,100);
//test.view.frame = CGRectMake(0, 0, 160, 210);
[[[UIApplication sharedApplication] keyWindow] addSubview:test.view];

[UIView commitAnimations];  

View 似乎从角落开始动画并出现在角落里。我怎样才能让它从底部向上滑动？越来越近了!

Answer 1

做 Matt 在这里所做的，但只是改变值(value)观和方向。如果您以后需要，我家里有代码可以从底部开始执行此操作(我会更新这篇文章)。

链接:http://cocoawithlove.com/2009/05/intercepting-status-bar-touches-on.html

此外，不要忘记删除将主视图向下移动的代码(这样 UIView 就像 ActionSheet 一样从顶部弹出)

更新代码:

这是我在我的一个应用程序中用来显示/隐藏一个小“选项” View 的方法:

- (void)toggleOptions:(BOOL)ViewHidden
{
// this method opens/closes the player options view (which sets repeat interval, repeat & delay on/off)

if (ViewHidden == NO)
{
    // delay and move view out of superview
    CGRect optionsFrame = optionsController.view.frame;

    [UIView beginAnimations:nil context:nil];

    optionsFrame.origin.y += optionsFrame.size.height;
    optionsController.view.frame = optionsFrame;

    [UIView commitAnimations];

    [optionsController.view
     performSelector:@selector(removeFromSuperview)
     withObject:nil
     afterDelay:0.5];
    [optionsController
     performSelector:@selector(release)
     withObject:nil
     afterDelay:0.5];
    optionsController = nil;
}
else
{
    optionsController = [[PlayOptionsViewController alloc] init];

    //
    // Position the options at bottom of screen
    //
    CGRect optionsFrame = optionsController.view.frame;
    optionsFrame.origin.x = 0;
    optionsFrame.size.width = 320;
    optionsFrame.origin.y = 423;

    //
    // For the animation, move the view up by its own height.
    //
    optionsFrame.origin.y += optionsFrame.size.height;

    optionsController.view.frame = optionsFrame;
    [window addSubview:optionsController.view];

    [UIView beginAnimations:nil context:nil];

    optionsFrame.origin.y -= optionsFrame.size.height;
    optionsController.view.frame = optionsFrame;

    [UIView commitAnimations];
}
}