如何在 ios 中为附件制作类似 whatsapp 的动画？

Question

我正在尝试实现类似于 whatsapp 附件的动画。我的意思是当我们点击附件按钮时的视图动画。知道怎么做吗？

Answer 1

您可以使用所需的多个 UIButton 添加自定义 UIView，然后您可以根据需要显示或隐藏 UIView。

Answer 2

在附件按钮的动作上，添加如下代码，动画已经设置好。

- (IBAction)onbtnTapped:(id)sender {

    self.view1.frame = CGRectMake( _btn1.frame.origin.x+_btn1.frame.size.width, _btn1.frame.origin.y+_btn1.frame.size.height, 0, 0);

    self.view1.hidden=NO;
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration: 0.5];
    [UIView setAnimationDelegate: self];

    self.view1.transform = CGAffineTransformMakeTranslation( 1, 1);
    self.view1.frame = CGRectMake( 0, 50, self.view.frame.size.width, 200);

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"cornerRadius"];
    animation.timingFunction = [CAMediaTimingFunction     functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    animation.fromValue = [NSNumber numberWithFloat: 100];
    animation.toValue = [NSNumber numberWithFloat: 0];
    animation.duration = 0.5;
    [self.view1.layer setCornerRadius: 0];
    [self.view1.layer addAnimation:animation forKey:@"cornerRadius"];
    [UIView commitAnimations];
}

如何在 ios 中为附件制作类似 whatsapp 的动画？

How to do whatsapp like animation for attachment in ios?

xcode

objective-c

uiviewanimation

ios