![-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1 "-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3")
网络数据解析出现-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3这样的错误，具体 reason 如下图：
![-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3](https://image.shishitao.com:8440/aHR0cDovL2ltYWdlczIwMTUuY25ibG9ncy5jb20vYmxvZy84MzUxNzIvMjAxNjA1LzgzNTE3Mi0yMDE2MDUxMDA5MzQ0MDA5My01NDA1OTc1MTEuanBn.jpg?w=700&webp=1 "-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3")
是因为在控件赋值时有一个 NSNumber 类型的 object，特此注意，改成
![-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3](https://image.shishitao.com:8440/aHR0cDovL2ltYWdlczIwMTUuY25ibG9ncy5jb20vYmxvZy84MzUxNzIvMjAxNjA1LzgzNTE3Mi0yMDE2MDUxMDA5Mzg1MjkwNS0xNTc3NzA5MDIuanBn.jpg?w=700&webp=1 "-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3")
即可。
-[__NSCFNumber length]: unrecognized selector sent to instance 0xb0000000000000e3
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