出現(xiàn)原因：
iOS 14系統(tǒng)調用方法- (void)displayLayer:(CALayer *)layer绪商，YYAnimatedImageView沒有正確處理
解決方法：
重寫YYAnimatedImageView.m 的中的displayLayer方法大概在529 行
- (void)displayLayer:(CALayer *)layer {
UIImage *currentFrame = _curFrame;
if (!currentFrame) {
currentFrame = self.image;
}
if (currentFrame) {
layer.contentsScale = currentFrame.scale;
layer.contents = (__bridge id)currentFrame.CGImage;
}
}
