内容如题，图片浏览器，显示黑屏，处理方法如下：
重写YYAnimatedImageView.m 的中的displayLayer方法
-(void)displayLayer:(CALayer *)layer {
UIImage *currentFrame = _curFrame;
if (!currentFrame) {
currentFrame = self.image;
}
if (currentFrame) {
layer.contentsScale = currentFrame.scale;
layer.contents = (__bridge id)currentFrame.CGImage;
}
}
