将string字符串转换为array数组
NSArray *array = [Str componentsSeparatedByString:@","];//分隔符逗号
将array数组转换为string字符串
NSString *tempString = [mutableArray componentsJoinedByString:@","];//分隔符逗
将string字符串转换为array数组
NSArray *array = [Str componentsSeparatedByString:@","];//分隔符逗号
将array数组转换为string字符串
NSString *tempString = [mutableArray componentsJoinedByString:@","];//分隔符逗