-[__NSCFNumber rangeOfCharacterFromSet:]: unrecognized selector sent to instance
2017-06-20 19:45
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-[__NSCFNumber rangeOfCharacterFromSet:]: unrecognized selector sent to instance
这个是由于传的参数类型不对所导致，找了半天才找到原因。
比如
[cell setColumnTitle:[homeData objectAtIndex:row]];
这里是要传NSString类型，而其实返回的是NSArray类型，这个错误不会立即出发，而是过一段时间再出发，所以不好定位。(OC特性:运行时机制,故通常无法准确定位)
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