iOS开发问题之：YYAnimatedImageView iOS14部分图片不展示

iOS14使用YYAnimatedImageView加载动图时会导致不显示相关图片。

在 YYAnimatedImageView.m 找到方法- (void)displayLayer:(CALayer *)layer

- (void)displayLayer:(CALayer *)layer {
 
    if (_curFrame) {

        layer.contents = (__bridge id)_curFrame.CGImage;
 
    }
 
}

断点在没有_curFrame的情况下，不会重新设置layer.contents值。

修改为：

- (void)displayLayer:(CALayer *)layer {
    if (_curFrame) {
        layer.contents = (__bridge id)_curFrame.CGImage;
    } else {
        // If we have no animation frames, call super implementation. iOS 14+ UIImageView use this delegate method for rendering.
        if ([UIImageView instancesRespondToSelector:@selector(displayLayer:)]) {
            [super displayLayer:layer];
        }
    }
}