放大渐变消失动画，APP启动界面常用

放大渐变消失动画，APP启动界面常用

[UIView animateWithDuration:1.5 animations:^{

[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

self.window.transform=CGAffineTransformMakeScale(2.f, 2.f);

self.window.alpha = 0;

} completion:^(BOOL finished) {

[self remove];

}];