oc 经常用到弹出view的方法

#pragma mark 弹出view

-(void)exChangeOut:(UIView *)changeOutView dur:(CFTimeInterval)dur

{

CAKeyframeAnimation * animation;

animation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];

animation.duration = dur;

animation.removedOnCompletion = NO;

animation.fillMode = kCAFillModeForwards;

NSMutableArray *values = [NSMutableArray array];

[values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.1, 0.1, 1.0)]];

[values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.2, 1.2, 1.0)]];

[values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.9, 0.9, 0.9)]];

[values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 1.0)]];

animation.values = values;

animation.timingFunction = [CAMediaTimingFunction functionWithName: @"easeInEaseOut"];

[changeOutView.layer addAnimation:animation forKey:nil];

}

使用：

[self exChangeOut:myview dur:0.5];