Question

我正在尝试制作一个幻灯片通知栏，以便当应用收到通知并且应用当前处于打开状态且位于前台时。我使用了自定义UIView（实际上它是UIButton）和动画。出于某种原因，虽然我点击它时没有注册新闻。它不会调用选择器方法。代码如下：

-(void)appOpenPush {

   //get string
    NSLog(@"got a push while app was open");
    AppDelegate *appDelegate =(AppDelegate *)[[UIApplication sharedApplication] delegate];
    NSString *pushString = appDelegate.pushString;

    //play sound
    AudioServicesPlaySystemSound(MessageSound);
    AudioServicesPlayAlertSound(kSystemSoundID_Vibrate);


    //note I am actually using a button here
    UIButton *pushView =[[UIButton alloc] initWithFrame:CGRectMake(0, -75, [[UIScreen mainScreen] bounds].size.width,75)];
    pushView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.8];
    [pushView addTarget:self action:@selector(pushSlidePress) forControlEvents:UIControlEventTouchUpInside];

    //set image
    UIImageView *logo = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"icon120.png"]];
    logo.frame=CGRectMake(5, 20, 35, 35);
    logo.layer.cornerRadius=8;
    logo.clipsToBounds=YES;
    [pushView addSubview:logo];

    UILabel *pushLabel = [[UILabel alloc] initWithFrame:CGRectMake(48, 34, 0, 0)];
    pushLabel.text=pushString;
    pushLabel.font=[UIFont systemFontOfSize:13];
    [pushLabel sizeToFit];
    pushLabel.textColor=[UIColor whiteColor];
    [pushView addSubview:pushLabel];


    //animate
    UIWindow* currentWindow = [UIApplication sharedApplication].keyWindow;
    [currentWindow addSubview:pushView];

    [UIView animateWithDuration:0.4 delay:0.0 options:UIViewAnimationOptionCurveEaseIn animations:^{
        pushView.frame  = CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.width,75);
    } completion:^(BOOL finished) {

        [UIView animateWithDuration:0.4 delay:2.0 options:UIViewAnimationOptionCurveEaseIn animations:^{
            pushView.frame  = CGRectMake(0, -75, [[UIScreen mainScreen] bounds].size.width,75);

        } completion:^(BOOL finished) {
            [pushView removeFromSuperview];
        }];

    }];

}

有人能给我一个指针，说明为什么这不起作用？是因为我要将UIButton添加到主窗口吗？任何提示都会非常有用。谢谢！

Answer 1

尝试此操作以避免徽标和pushLabel接收触摸事件：

logo.userInteractionEnabled = NO;
pushLabel.userInteractionEnabled = NO;

Answer 2

您必须将UIViewAnimationOptionAllowUserInteraction添加为两个动画块的选项。

根据documentation：

“允许用户在动画制作动画时与其进行互动。”

Answer 3

事实证明，如果按钮移动，你不能简单地检测按下。我测试了这个只是添加框架设置而没有它动画并且它注册了按下，当动画打开时它没有。似乎UIButton没有内置跟踪。我确实想出了一个快速解决方法。我刚制作了一个与整个动画区域相同大小的按钮（即滑出栏的大小），并将其添加到动画帧顶部的currentWindow。所以它只是动画顶部的一个清晰的隐形按钮，但它本身并没有移动。即：

UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0,[[UIScreen mainScreen]bounds].size.width , 75)];
[button addTarget:self action:@selector(pushSlidePress) forControlEvents:UIControlEventTouchUpInside];
[currentWindow addSubview:button];

[UIView animateWithDuration:0.4 delay:0.0 options:(UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction) animations:^{
    pushView.frame  = CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.width,75);
} completion:^(BOOL finished) {

    [UIView animateWithDuration:0.4 delay:2.0 options:(UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction) animations:^{
        pushView.frame  = CGRectMake(0, -75, [[UIScreen mainScreen] bounds].size.width,75);

    } completion:^(BOOL finished) {
        [pushView removeFromSuperview];
        [button removeFromSuperview];
    }];

}];

显然，您正在覆盖屏幕上可能阻挡其他内容的区域，但这取决于您的设置。动画很快，我只有一个按钮，通知栏会阻止，而且它太快注意到了。希望这对其他试图达到类似功能的人有所帮助。谢谢你的帮助。

动画UIButton没有注册新闻

3 个答案: