NSArray可能无法响应componentsSeparatedByString

Question

NSArray *Lines = [StringData componentsSeparatedByString:@"\n"];
for (NSArray *ThisLine in Lines){

    NSArray *Items = [ThisLine componentsSeparatedByString:@","];
    ...
}

我收到警告NSArray可能无法响应componentsSeparatedByString.

有什么想法吗？

Answer 1

ThisLine当它应该是一个数组时,你声明为一个数组NSString.这应该解决它

for (NSString *ThisLine in Lines){