ios拼接字符串逗号隔开

NSMutableArray *currentArr = [NSMutableArray array];
NSMutableArray *currentArr2 = [NSMutableArray array];
for (int i = 0; i< self.self.dataSource.count; i++) {
    
    MenuInfoModel *model =self.dataSource[i];
     //先放进数组
    NSLog(@"我是id===%@",model.id);
    [currentArr addObject:model.id];
    
    
}
for (int i = 0; i< self.NodataSource.count; i++) {
    MenuInfoModel *model =self.NodataSource[i];
    [currentArr2 addObject:model.id];
    
}

NSString *string = [currentArr componentsJoinedByString:@","];//,为分隔符
NSString *string2 = [currentArr2 componentsJoinedByString:@","];//,为分隔符