ios - FXBlurView 背景滞后

Question

我正在使用 FXBlurView因为我的 UIViews 背景模糊。我使用的是默认设置，这意味着它会更新每一帧。但是，由于某种原因，背景似乎有点滞后。这是我遇到的问题的 GIF:
BlurGIF http://www.interdazzle.com/misc/forums/BlurGIF.gif如果有人可以提供帮助，那就太好了。提前致谢!

编辑:我稍微更改了我的代码以符合 Nick 的建议，并得出以下结论:初始化时:

   self.sidebar.blurRadius = 30;
    self.sidebar.dynamic = NO;
    self.sidebar.contentMode = UIViewContentModeLeft;
    [self.sidebar updateAsynchronously:YES completion:^{
        self.sidebar.frame = CGRectMake(0, 0, 250, [[UIScreen mainScreen] bounds].size.height);

    }];

当我为它制作动画时:

[UIView animateWithDuration:0.5 animations:^{
    BOOL open = self.sidebar.frame.size.width >= 250;
    self.sidebar.frame = CGRectMake(open? -250: 0, self.sidebar.frame.origin.y, open? 0: 250, self.sidebar.frame.size.height);
}];

但是，它似乎没有正确更新/定位。提前致谢!

Answer 1

扩展@NickLockwood 的问题:
当 FXBlurView 启动时，我运行这段代码:

self.sidebar.blurRadius = 30;
self.sidebar.dynamic = NO;
self.sidebar.contentMode = UIViewContentModeRight;
self.sidebar.layer.contentsGravity = kCAGravityBottomLeft;
[self.sidebar setClipsToBounds:YES];
[self.sidebar updateAsynchronously:YES completion:^{
    // Whatever you want
}];

然后我简单地为对象设置动画，如下所示:

[UIView animateWithDuration:0.5 animations:^{
        BOOL open = self.sidebar.frame.size.width > 125; // Over half way done
        self.sidebar.frame = CGRectMake(0,0, open? 0 : 250, [[UIScreen mainScreen] bounds].size.height);
    }];

谢谢!