UIAlertView弹出视图动画效果

你可以把popAnimation加入到你想进行动画的任何View中的layer中这样就实现了UIAlertView一样的弹出动画效果。

CAKeyframeAnimation *popAnimation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
                    popAnimation.duration = 0.4;
                    popAnimation.values = @[[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.01f, 0.01f, 1.0f)],
                                            [NSValue valueWithCATransform3D:CATransform3DMakeScale(1.1f, 1.1f, 1.0f)],
                                            [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.9f, 0.9f, 1.0f)],
                                            [NSValue valueWithCATransform3D:CATransform3DIdentity]];
                    popAnimation.keyTimes = @[@0.0f, @0.5f, @0.75f, @1.0f];
                    popAnimation.timingFunctions = @[[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
                                                     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
                                                     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
                    [alertView.layer addAnimation:popAnimation forKey:nil];