iOS 自带音乐 miniplay 模糊效果

效果图:

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UIVisualEffectView *effectView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleLight]];
    effectView.frame = self.frame;
    [self addSubview:effectView];
// 改为 lightGrayColor 效果更佳
    [self setBackgroundColor:[[UIColor whiteColor] colorWithAlphaComponent:0.2f]];