IOS开发1-动画 背景渐隐，view上移

[UIView beginAnimations:nil context:nil];  

    //设定动画持续时间 

    [UIView setAnimationDuration:0.3]; 

    //动画的内容 

    [mBSelectInfoViewController.innerView setFrame:CGRectMake(202, 64, mBSelectInfoViewController.innerView.frame.size.width, mBSelectInfoViewController.innerView.frame.size.height)];

    [mBSelectInfoViewController.backgroundView setAlpha:0.3];

    //动画结束 

    [UIView commitAnimations];

 [NSTimer scheduledTimerWithTimeInterval:0.3 target:self selector:@selector(removeUserSelectView:) userInfo:nil repeats:NO];

//定时器

//过了0.3秒会执行   removeUserSelectView:方法