ios - 修复弹出滚动菜单的动画

Question

我正在尝试通过激活 UIbutton 制作一个从按钮向上滑动的菜单。当你按下按钮时，一个 UIscrollView 从底部向上滑动。当 UIbutton 被激活和未被激活时，该按钮也会停留在滑动菜单上方。它应该是这样的:

我在实际项目中将屏幕锁定为纵向模式，问题是当您按下按钮时。 UIscrollView 滑动到屏幕中间，当你再次按下按钮时，它只会向下移动几下。并且按钮不会随 UIscrollView 一起移动。我想让它像上图一样出现 UI scrollView 和 Unbutton 并在屏幕视口(viewport)下方下降。这就是我的实际项目的样子 - http://s4.postimg.org/dlvxnffbx/unnamed.png

以下是 viewcontroller.m 中用于动画的代码。

#import "ViewController.h"

@interface ViewController ()


@end

@implementation ViewController
@synthesize scrollView;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    draw1 = 0;
    scrollView.frame = CGRectMake(0, 300, 480, 55);
    [scrollView setContentSize:CGSizeMake(480, 55)];

    openMenu.frame = CGRectMake(220, 270, 60, 30);
}
- (IBAction)OpenMenu:(id)sender {
    if (draw1 ==0) {
        draw1 = 1;
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:0.5];
        [UIView setAnimationDelay:0.0];
        [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

        [UIButton beginAnimations:nil context:nil];
        [UIButton setAnimationDuration:0.5];
        [UIButton setAnimationDelay:0.0];
        [UIButton setAnimationCurve:UIViewAnimationCurveEaseOut];

        scrollView.frame = CGRectMake(0, 245, 568, 55);
        openMenu.frame = CGRectMake(220, 200, 60, 30);

        [self.view bringSubviewToFront:scrollView];

        [UIView commitAnimations];
    } else {
        draw1 = 0;
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:0.5];
        [UIView setAnimationDelay:0.0];
        [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

        [UIButton beginAnimations:nil context:nil];
        [UIButton setAnimationDuration:0.5];
        [UIButton setAnimationDelay:0.0];
        [UIButton setAnimationCurve:UIViewAnimationCurveEaseOut];

        scrollView.frame = CGRectMake(0, 300, 568, 55);
        openMenu.frame = CGRectMake(220, 270, 60, 30);

        [self.view bringSubviewToFront:scrollView];

        [UIView commitAnimations];
    }
}
@end

Answer 1

您是否尝试过更换:

if (draw1 ==0) {
    draw1 = 1;
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    [UIView setAnimationDelay:0.0];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

    [UIButton beginAnimations:nil context:nil];
    [UIButton setAnimationDuration:0.5];
    [UIButton setAnimationDelay:0.0];
    [UIButton setAnimationCurve:UIViewAnimationCurveEaseOut];

    scrollView.frame = CGRectMake(0, 245, 568, 55);
    openMenu.frame = CGRectMake(220, 200, 60, 30);

    [self.view bringSubviewToFront:scrollView];

    [UIView commitAnimations];
} else {
    draw1 = 0;
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    [UIView setAnimationDelay:0.0];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

    [UIButton beginAnimations:nil context:nil];
    [UIButton setAnimationDuration:0.5];
    [UIButton setAnimationDelay:0.0];
    [UIButton setAnimationCurve:UIViewAnimationCurveEaseOut];

    scrollView.frame = CGRectMake(0, 300, 568, 55);
    openMenu.frame = CGRectMake(220, 200, 60, 30);

    [self.view bringSubviewToFront:scrollView];

    [UIView commitAnimations];
}

和 :

    if (draw1 ==0) {
        draw1 = 1;
        [UIView animateWithDuration:0.5
                              delay:0.0
                            options: UIViewAnimationOptionCurveEaseOut
                         animations:^{
                             scrollView.frame = CGRectMake(0, 1000, 568, 55);
                             openMenu.frame = CGRectMake(220, 200, 60, 30);
                         } 
                         completion:^(BOOL finished){
                             NSLog(@"Done!");
                         }];
    } else {
        draw1 = 0;
        [UIView animateWithDuration:0.5
                              delay:0.0
                            options: UIViewAnimationOptionCurveEaseOut
                         animations:^{
                             scrollView.frame = CGRectMake(0, 300, 568, 55);
                             openMenu.frame = CGRectMake(220, 270, 60, 30);
                         } 
                         completion:^(BOOL finished){
                             NSLog(@"Done!");
                         }];
    }