iOS报错[__NSArrayI removeObjectAtIndex:]: unrecognized selector sent to instance

将NSArray转成NSMutableArray的时候要这样写 

    NSMutableArray *dbArray = [NSMutableArray array];
    NSArray *array = [..........];
    dbArray = [array mutableCopy];

如果将mutableCopy换成copy 就会报以上错误或者[__NSArrayI addObjectAtIndex:]: unrecognized selector sent to instance  等等一列操作NSArray的错误.

注:将NSMutableArray转成NSArray的时候要写copy

版权声明：本文为soindy原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。