Question

我正在尝试将所有联系人备份到服务器上。
所以我将联系人转换为vCard字符串并发送 vCard字符串到服务器上，并存储vCard字符串 RecordID进入sqlite数据库
所以第一次用户想要收回所有的联系人将转到服务器和数据库。
从第二次起，我只想发送新的联系人服务器。所以我需要比较存储的数据库RecordIds 使用Phonebook RecordIds进入nsarray并获取新内容 RecordIds成一个数组
例如我有40,41,42,43,44,45等RecordIds dbarray。不一定按顺序或顺序。
现在当用户添加5个新联系人时，电话簿阵列将包含 recordIds如40,41,42,43,44,45,46,47,48,50
所以这次我只想发送一条带有recordIds的联系人 46,47,48,49和50.像增量备份这样的东西
我还需要检查是否有任何修改存储的vCards.So我还需要比较来自的所有vCard字符串电话簿阵列和数据库阵列。

我是iOS编程的新手，我被困住了。请救命！！！它迫切需要

Answer 1

我通过使用以下代码解决了上述问题。希望它可以帮助某人。

 -(void)newContactsAndContactsToUpdate
  {
    NSMutableArray *newContact = [[NSMutableArray alloc]init];
    NSMutableArray *newContactRecIds = [[NSMutableArray alloc]init];
    NSMutableArray *updateContactRecIds = [[NSMutableArray alloc]init];
    NSMutableArray *updateContactRecIds = [[NSMutableArray alloc]init];
    //dataArray contains all the contacts(converted into Vcard strings) in the phonebook
    //recordIDArray contains the all recordids in the phonebook
    //dbArraywithRID contains the recordids stored in database.
    //dbArraywithVcard contains  contacts(converted into Vcard strings)stored in database
    for(int i=0;i< dataArray.count;i++)
    {
    BOOL found = NO;
    int phoneBookRecId=[[recordIDArray objectAtIndex:i] intValue];


    NSString * currentPhVc=[dataArray objectAtIndex:i];

    for(int j=0;j< dbArraywithRID.count;j++)
    {
        int dbRecId=[[dbArraywithRID objectAtIndex:j] intValue];

        if(dbRecId == phoneBookRecId)
        {
            found =YES;

            NSString * currentDBVc=[dbArraywithVcard objectAtIndex:j];

            if(![currentDBVc isEqualToString:currentPhVc])
            {
                NSLog(@" db rec  =%@    -   %@   ",currentDBVc,currentPhVc );
                [updateContactRecIds addObject:[NSNumber numberWithInt:phoneBookRecId]];

                [newContact addObject:currentPhVc];
                [newContactRecIds addObject:[NSNumber numberWithInt:phoneBookRecId]];

            }
            break;
        }
    }
    if(!found)
    {
        [newContact addObject:currentPhVc];
        [newContactRecIds addObject:[NSNumber numberWithInt:phoneBookRecId]];

    }
}


if(newContact!=nil && [newContact count] > 0)
{
    //newContact array contains all the contacts(vcard strings) that are new

}
if(updateContactRecIds!=nil && [updateContactRecIds count] > 0)
{
    updateContactRecIds contains all the recordids which need to be updated
}

}

比较一个nsmutablearray的所有对象与其他nsmutablearray的所有对象，并将新对象转换为另一个nsarray

1 个答案: