UIView逐渐变亮然后消失，动画

    imaged = [[UIImageViewalloc] initWithFrame:CGRectMake(scrrenW*0.36,self.view.center.y-scrrenW*0.15,scrrenW*0.28,scrrenW*0.28)];

    imaged.image = [UIImageimageNamed:@"logo2"];

    [self.viewaddSubview:imaged];

    

    imaged.alpha =0;

    [UIViewanimateWithDuration:4.fanimations:^{

        imaged.alpha =1;

      imaged.Hidden =YES;

    }];