iphone - Instagram“喜欢”动画iOS

Question

当您在我的 iOS 应用程序中双击图片时，我想实现 Instagram 使用的“点赞”动画。这是一个非常漂亮的功能，并且认为它会为我的应用程序增添一点味道。我发布了双击前后的照片。心脏在大约两秒钟内淡入淡出。我想不明白。让我知道！

Answer 1

好吧，如果你想使用动画方法，你可以使用帧序列来做到这一点。

Toast（就像在 android 中一样）方法也是完美的，为此您可以在此处查看适用于 iOS 的重复问题 Growl/toast 样式通知库。

Answer 2

#define LIKED 100 //change as per your requirement
#define UNLIKE 200 //change as per your requirement

- (void) likeUnlike:(UIGestureRecognizer *)sender
{
    [imageViewSub setHidden:NO];

    UIImageView *imageView = (UIImageView *)sender.view;

    if(imageView.tag==LIKED)
    {
        [imageViewSub setImage:[UIImage imageNamed:@"unlike.png"]];
        [imageView setTag:UNLIKE];
    }
    else
    {
        [imageViewSub setImage:[UIImage imageNamed:@"like.png"]];
        [imageView setTag:LIKED];
    }

    //here, your like/unlike update call to server for store selection.

    //set the frame exactly you want or
    //implement some other way to hide `imageViewSub` after like/unlike
    [imageViewSub setFrame:CGRectMake( 110, 180, 100, 100)];
    [UIView beginAnimations:@"anim" context:nil];
    [UIView setAnimationDuration:1.0];
    [imageViewSub setFrame:CGRectMake(200, 200, 0, 0)]; 
    [UIView commitAnimations];
}

//Add below code where you're added/showing your images. There's always two `UIImageView`s one is `main` and other one is `sub`.

[imageViewSub bringSubviewToFront:imageViewMain];

UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] init];
[doubleTap setNumberOfTapsRequired:2];
[doubleTap addTarget:self action:@selector(likeUnlike:)];
[imageViewMain addGestureRecognizer:doubleTap];
[doubleTap release];

PSimageViewMain最初会带有标签，并且UNLIKED应该被隐藏。imageViewSubunlike.png

Answer 3

在我的一些项目中，我一直在使用MBProgressHUD。您可以设置标准图像/进度圈，或自定义图像，还可以自定义标签的字体。我很喜欢。如果您将它与 performBlockAfterDelay 一起使用（选中此类别），它可以为您节省大量时间，让您的生活更轻松。