objective-c - MsgPack 无法对 NSData 对象进行消息打包

Question

尝试设置图像数据

NSData *thumbnailData = UIImageJPEGRepresentation(place.thumbnail, 0.8);
            [placeDict setObject:thumbnailData forKey:thumbnail];

并得到错误：

Could not messagepack object: External Data Reference: <self = 0xbba24f0 ; path = nil ; length = 557>

Answer 1

您确定在这行代码之后收到此错误吗？使用此代码可以确定您的程序在这部分代码中有/没有错误：

NSLog((@"%s [Line %d] "), __PRETTY_FUNCTION__, __LINE__);
NSData *thumbnailData = UIImageJPEGRepresentation(place.thumbnail, 0.8);
NSLog((@"%s [Line %d] "), __PRETTY_FUNCTION__, __LINE__);
placeDict setObject:thumbnailData forKey:thumbnail];
NSLog((@"%s [Line %d] "), __PRETTY_FUNCTION__, __LINE__);