Question

我的iPad上有6000多个联系人，可以获取所有联系人以及存储在核心数据中，我已经在我的应用程序中实现了这个功能，但是它需要花费太多时间来获取和加载数据所以是否存在以任何方式获取，异步或以其他方式存储数据。

所以请给我建议或任何想法来解决我的问题。

提前致谢。

//用于同步联系人的代码

- (void)synchronizeContacts
{

if (self.syncStatus)
    {
        //Loading and showing the activity indicator view
        [NSThread detachNewThreadSelector:@selector(showActivityIndicator:)
                                 toTarget:self
                               withObject:@"Synchronizing contacts..."];
    }

if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusNotDetermined)
{
    // Request authorization to Address Book
    ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL);

    ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error)
    {
        // First time access has been granted, add the contact
        NSLog(@"First time access has been granted, add the contact");
        [self synchronizeContactsFromContacts];
    });
}
else if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusAuthorized)
{
    // The user has previously given access, add the contact
    NSLog(@"The user has previously given access, add the contact");        
    [self synchronizeContactsFromContacts];
}
else {
    // The user has previously denied access
    // Send an alert telling user to change privacy setting in settings app
    NSLog(@"The user has previously denied access");
}

}

-(void)synchronizeContactsFromContacts
{
    NSMutableArray *phoneContactsArray = [[NSMutableArray alloc]init];
    NSMutableArray *allDeviceContacts=[[NSMutableArray alloc]init];

// Do whatever you want here.

ABAddressBookRef iphoneAddress = ABAddressBookCreate();

//read all sources
CFArrayRef sourcesArray = ABAddressBookCopyArrayOfAllSources(iphoneAddress);
for (CFIndex i = 0; i < CFArrayGetCount(sourcesArray); i++)
{
    ABRecordRef iphoneSource = (ABRecordRef)CFArrayGetValueAtIndex(sourcesArray, i);
    NSArray *allPersons = (NSArray *)ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(iphoneAddress, iphoneSource, kABPersonSortByFirstName);
    [allDeviceContacts addObjectsFromArray:allPersons];

    //read all persons
    for(int nameIndex=0; nameIndex<[allPersons count]; nameIndex++)
    {
        ABRecordRef person = [allPersons objectAtIndex:nameIndex];

        //person modification date
        CFDateRef lastModifyDate = ABRecordCopyValue(person, kABPersonModificationDateProperty);

        NSDate *lastSyncDate = [[PFCoreDataController sharedCoreDataController] getLastContactSynchedDate];

        if(lastSyncDate)
        {
            NSTimeInterval timeInterval = [lastSyncDate timeIntervalSinceDate: (NSDate*)lastModifyDate] * -1000.0;
            if(timeInterval <= 0) //skip if this conatct is not modified
            {
                if(lastModifyDate)
                    CFRelease(lastModifyDate);

                continue;
            }
        }
        if(lastModifyDate)
            CFRelease(lastModifyDate);


        NSString *nullValue = @"";
        NSNumber *zeroValue = [NSNumber numberWithInt:0];

        NSMutableDictionary *companyAddress = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                               zeroValue, @"personUId",
                                               zeroValue, KEYCONTACTS_CONTACTID,
                                               zeroValue, KEYCONTACTS_ID,
                                               nullValue, KEYCONTACTS_NAME,
                                               nullValue, KEYCONTACTS_LAST_NAME,
                                               nullValue, KEYCONTACTS_STREET,
                                               nullValue, KEYCONTACTS_CITY,
                                               nullValue, KEYCONTACTS_STATE,
                                               nullValue, KEYCONTACTS_ZIP,
                                               nullValue, KEYCONTACTS_COUNTRY,
                                               nullValue, KEYCONTACTS_PHONE,
                                               nullValue, KEYCONTACTS_EMAIL,
                                               nullValue, @"company_Name",
                                               nullValue, @"website",
                                               nullValue, @"mobile",
                                               nil];

        NSString *fName = @"";
        //NSString *mName = @"";
        NSString *lName = @"";
        // NSString *profileName = @"";
        NSString *profileCompanyText = @"";



        //get name
        fName=(NSString*)ABRecordCopyValue(person, kABPersonFirstNameProperty);
        //mName=(NSString*)ABRecordCopyValue(person, kABPersonMiddleNameProperty);
        lName=(NSString*)ABRecordCopyValue(person, kABPersonLastNameProperty);

        //profileName = [self concatnateContactName:fName middleName:mName andLastName:lName];
        [companyAddress setValue:fName forKey:KEYCONTACTS_NAME];
        [companyAddress setValue:lName forKey:KEYCONTACTS_LAST_NAME];

        [fName release];
        //[mName release];
        [lName release];

        [companyAddress setValue:[NSNumber numberWithInt:ABRecordGetRecordID(person)] forKey:@"personUId"];
        //NSLog(@"%d",ABRecordGetRecordID(person));

        //for mapping org name to comp name
        CFTypeRef profileCompany = ABRecordCopyValue(person,kABPersonOrganizationProperty );
        if(profileCompany)
        {
            profileCompanyText  = (NSString*)profileCompany;
            [companyAddress setValue:profileCompanyText forKey:@"company_Name"];
            CFRelease(profileCompany);
        }

        //get email id
        ABMutableMultiValueRef multiValue = nil;
        if(multiValue)
        {
            CFRelease(multiValue);
            multiValue =nil;
        }
        multiValue = ABRecordCopyValue(person, kABPersonEmailProperty);

        if(ABMultiValueGetCount(multiValue) > 0)
        {
            CFDictionaryRef dict = ABMultiValueCopyValueAtIndex(multiValue, 0);
            [companyAddress setValue:(NSString*)dict forKey:KEYCONTACTS_EMAIL];
            CFRelease(dict);
        }

        if(multiValue)
        {
            CFRelease(multiValue);
            multiValue =nil;
        }


        //get URL
        multiValue = ABRecordCopyValue(person, kABPersonURLProperty);
        if(ABMultiValueGetCount(multiValue) > 0)
        {
            CFDictionaryRef dict = ABMultiValueCopyValueAtIndex(multiValue, 0);
            [companyAddress setValue:(NSString*)dict forKey:@"website"];
            CFRelease(dict);
        }

        if(multiValue)
        {
            CFRelease(multiValue);
            multiValue =nil;
        }

        //to get address from iphone contacts
        multiValue = ABRecordCopyValue(person, kABPersonAddressProperty);
        if(ABMultiValueGetCount(multiValue) > 0)
        {
            CFDictionaryRef dict = ABMultiValueCopyValueAtIndex(multiValue, 0);
            CFStringRef street = CFDictionaryGetValue(dict, kABPersonAddressStreetKey);
            CFStringRef city = CFDictionaryGetValue(dict, kABPersonAddressCityKey);
            CFStringRef state = CFDictionaryGetValue(dict, kABPersonAddressStateKey);
            CFStringRef zip = CFDictionaryGetValue(dict, kABPersonAddressZIPKey);
            CFStringRef country = CFDictionaryGetValue(dict, kABPersonAddressCountryKey);
            CFRelease(dict);

            [companyAddress setValue:(NSString*)street forKey:KEYCONTACTS_STREET];
            [companyAddress setValue:(NSString*)city forKey:KEYCONTACTS_CITY];
            [companyAddress setValue:(NSString*)state forKey:KEYCONTACTS_STATE];
            [companyAddress setValue:(NSString*)zip forKey:KEYCONTACTS_ZIP];
            [companyAddress setValue:(NSString*)country forKey:KEYCONTACTS_COUNTRY];
        }
        if(multiValue)
        {
            CFRelease(multiValue);
            multiValue =nil;
        }



        //get contact number
        multiValue = ABRecordCopyValue(person, kABPersonPhoneProperty);
        CFStringRef phoneNumber;
        NSString* mobileLabel;
        if(ABMultiValueGetCount(multiValue) > 0)
        {
            for(CFIndex i = 0; i < ABMultiValueGetCount(multiValue); i++)
            {
                mobileLabel = (NSString*)ABMultiValueCopyLabelAtIndex(multiValue, i);
                if([mobileLabel isEqualToString:@"_$!<Mobile>!$_"]) {
                    phoneNumber = ABMultiValueCopyValueAtIndex(multiValue, i);
                    [companyAddress setValue:(NSString*)phoneNumber forKey:@"mobile"];
                    //NSLog(@"1=%@",phoneNumber);
                    CFRelease(phoneNumber);
                }
                else if([mobileLabel isEqualToString:@"_$!<Work>!$_"]) {
                    phoneNumber = ABMultiValueCopyValueAtIndex(multiValue, i);
                    [companyAddress setValue:(NSString*)phoneNumber forKey:KEYCONTACTS_PHONE];
                    //NSLog(@"2=%@",phoneNumber);
                    CFRelease(phoneNumber);
                }
                [mobileLabel release];
            }
        }
        if(multiValue)
        {
            CFRelease(multiValue);
            multiValue =nil;
        }

        [phoneContactsArray addObject:companyAddress];
    }

    [allPersons release];

}

CFRelease(sourcesArray);

CFRelease(iphoneAddress);
iphoneAddress=nil;

//delete key contact from app(deleated from native app)
BOOL deleteStatus=YES;
NSArray *allKeyContactArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getAllSyncContacts]];
for(int m=0;m<[allKeyContactArray count];m++){
    int devKeyContactId=[[[allKeyContactArray objectAtIndex:m]devConatctId]intValue];

    deleteStatus=YES;
    for(int n=0;n<[allDeviceContacts count];n++)
    {
        ABRecordRef person = [allDeviceContacts objectAtIndex:n];
        int personId=ABRecordGetRecordID(person);

        if(personId==devKeyContactId)
        {
            deleteStatus=NO;
            break;
        }
    }

    if(deleteStatus==YES)
    {
        //delete key contact
        NSString *deviceId=[NSString stringWithFormat:@"%d",devKeyContactId];
        NSArray *syncContactArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getSyncContactsDetailsByDevId:deviceId]];

        if([syncContactArray count]>0)
        {
            int contactId=[[[syncContactArray objectAtIndex:0]appContactId]intValue];

            [[PFCoreDataController sharedCoreDataController]deleteSyncContacts:contactId];
            [[PFCoreDataController sharedCoreDataController]deleteKeyContact:contactId];
        }
        [syncContactArray release];
    }

}
[allKeyContactArray release];



//delete company from app(deleated from native app)
//deleteStatus=YES;
NSArray *allCompanyArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getAllSyncCompanies]];
for(int m=0;m<[allCompanyArray count];m++)
{
    int devKeyContactId=[[[allCompanyArray objectAtIndex:m]devCompanyId]intValue];

    deleteStatus=YES;
    for(int n=0;n<[allDeviceContacts count];n++)
    {
        ABRecordRef person = [allDeviceContacts objectAtIndex:n];
        int personId=ABRecordGetRecordID(person);

        if(personId==devKeyContactId)
        {
            deleteStatus=NO;
            break;
        }
    }

    if(deleteStatus==YES)
    {
        //delete contact
        NSString *deviceId=[NSString stringWithFormat:@"%d",devKeyContactId];
        NSArray *syncCompanyArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getSyncCompanyDetailsByDevId:deviceId]];

        if([syncCompanyArray count]>0)
        {
            int companyId=[[[syncCompanyArray objectAtIndex:0] appCompanyId]intValue];

            NSString *companyName = nil;
            NSArray *companyArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getContactUsingContactId:companyId]];
            if([companyArray count] > 0)
            {
                Contacts *tempContact=[companyArray objectAtIndex:0];
                companyName=[NSString stringWithFormat:@"%@",tempContact.companyName];
            }
            [companyArray release];

            //delete company
            [[PFCoreDataController sharedCoreDataController]deleteSyncCompanyByAppId:companyId];
            [[PFCoreDataController sharedCoreDataController]deleteCompanyById:companyId];


            //check this company has key contact then create company  to app
            NSArray *keyContactOfCompany=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getKeyContactsFromContact:[NSNumber numberWithInt:companyId] searchKey:@"*"]];
            if([keyContactOfCompany count]>0){
                NSString *nullValue = @"";
                NSNumber *zeroValue = [NSNumber numberWithInt:0];

                NSDictionary *company = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                         zeroValue, CONTACTS_ID,
                                         nullValue, CONTACTS_COMPANYNAME,
                                         nullValue, CONTACTS_STREET,
                                         nullValue, CONTACTS_STATE,
                                         nullValue, CONTACTS_CITY,
                                         nullValue, CONTACTS_ZIP,
                                         nullValue, CONTACTS_COUNTRY,
                                         nullValue, CONTACTS_PHONE,
                                         nullValue, CONTACTS_WEBSITE,
                                         nil];

                [company setValue:companyName forKey:CONTACTS_COMPANYNAME];
                [company setValue:[NSNumber numberWithInt:companyId] forKey:CONTACTS_ID];
                [[PFCoreDataController sharedCoreDataController]addNewCompanyToApp:company];
            }
            [keyContactOfCompany release];
        }
        [syncCompanyArray release];
    }

}
[allCompanyArray release];



[allDeviceContacts release];



//sort the objects(due to get company first)
NSString *descriptor = KEYCONTACTS_NAME;
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:descriptor ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
NSArray *sortedArray = [phoneContactsArray sortedArrayUsingDescriptors:sortDescriptors];
[phoneContactsArray removeAllObjects];
[phoneContactsArray addObjectsFromArray:sortedArray];
[sortDescriptor release];


//keep old company references
NSArray *syncContacts=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getAllSyncCompanyDetails]];
for(int k=0;k<[syncContacts count];k++)
{
    NSMutableDictionary *syncCompany = [[NSMutableDictionary alloc]init];
    [syncCompany setValue:[[syncContacts objectAtIndex:k]appCompanyId] forKey:@"appId"];
    [syncCompany setValue:[[syncContacts objectAtIndex:k]devCompanyId] forKey:@"devId"];
    [oldSyncCompanies addObject:syncCompany];
    [syncCompany release];
}
[syncContacts release];


//delete all key contacts
//[[PFCoreDataController sharedCoreDataController]deleteAllKeyContacts];
//[[PFCoreDataController sharedCoreDataController]deleteAllSyncContacts];


//delete all contacts
//[[PFCoreDataController sharedCoreDataController]deleteAllCompany];
//[[PFCoreDataController sharedCoreDataController]deleteAllSyncCompany];


//delete modified key contact from app
for(int p=0;p<[phoneContactsArray count];p++)
{
    NSString *deviceId=[NSString stringWithFormat:@"%d",[[[phoneContactsArray objectAtIndex:p]valueForKey:@"personUId"]intValue]];
    NSArray *syncContactArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getSyncContactsDetailsByDevId:deviceId]];

    if([syncContactArray count]>0)
    {
        int contactId=[[[syncContactArray objectAtIndex:0]appContactId]intValue];

        [[PFCoreDataController sharedCoreDataController]deleteSyncContacts:contactId];
        [[PFCoreDataController sharedCoreDataController]deleteKeyContact:contactId];
    }
    [syncContactArray release];
}

//delete modified company from app
for(int p=0;p<[phoneContactsArray count];p++)
{
    NSString *deviceId=[NSString stringWithFormat:@"%d",[[[phoneContactsArray objectAtIndex:p]valueForKey:@"personUId"]intValue]];
    NSArray *syncCompanyArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController]getSyncCompanyDetailsByDevId:deviceId]];

    if([syncCompanyArray count]>0)
    {
        int companyId=[[[syncCompanyArray objectAtIndex:0] appCompanyId]intValue];

        [[PFCoreDataController sharedCoreDataController]deleteSyncCompanyByAppId:companyId];
        [[PFCoreDataController sharedCoreDataController]deleteCompanyById:companyId];
    }
    [syncCompanyArray release];
}

//----------------> phone to app Synchornization <----------------//
for(int n=0;n<[phoneContactsArray count];n++)
{
    NSMutableDictionary *phoneContact = [phoneContactsArray objectAtIndex:n];
    NSString *companyName = (NSString*)[phoneContact valueForKey:@"company_Name"];
    NSString *personName = (NSString*)[phoneContact valueForKey:KEYCONTACTS_NAME];

    if(!(companyName == NULL) && !([companyName isEqualToString:@""]) && !([trimmedText(companyName) length] == 0))
    {

        if(!(personName == NULL) && !([personName isEqualToString:@""]) && !([trimmedText(personName) length] == 0))
        {
            NSArray *allCompanyArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController] searchContact:companyName]];
            //add key contact to existing company
            if([allCompanyArray count]!=0)
            {
                for(Contacts *appContact in allCompanyArray)
                {
                    NSInteger newContactId = [PFCommon getNewKeyContactId];
                    [phoneContact setValue:appContact.contactId  forKey:KEYCONTACTS_CONTACTID];
                    [phoneContact setValue:[NSNumber numberWithInt:newContactId] forKey:KEYCONTACTS_ID];

                    [[PFCoreDataController sharedCoreDataController]addKeyContact:phoneContact];
                    [[PFCoreDataController sharedCoreDataController]addSynchedContacts:newContactId:[NSString stringWithFormat:@"%d",[[phoneContact valueForKey:@"personUId"] intValue]]];
                }
            }
            //create company and add key contact
            else
            {
                [self createNewCompany:phoneContact];
                NSArray *aCompany=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController] searchContact:companyName]];

                if([aCompany count]>0)
                {
                    Contacts *newContact= [aCompany objectAtIndex:0];
                    NSNumber *contactId=newContact.contactId;
                    NSInteger newKeyContactId = [PFCommon getNewKeyContactId];

                    [phoneContact setValue:contactId  forKey:KEYCONTACTS_CONTACTID];
                    [phoneContact setValue:[NSNumber numberWithInt:newKeyContactId] forKey:KEYCONTACTS_ID];

                    [[PFCoreDataController sharedCoreDataController]addKeyContact:phoneContact];
                    [[PFCoreDataController sharedCoreDataController]addSynchedContacts:newKeyContactId:[NSString stringWithFormat:@"%d",[[phoneContact valueForKey:@"personUId"] intValue]]];
                }
                [aCompany release];

            }
            [allCompanyArray release];

        }
        else{
            NSArray *allCompanyArray=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController] searchContact:companyName]];
            //check company existing if existing discard this contact
            if([allCompanyArray count]!=0)
            {}
            //create only a company
            else
            {
                [self createNewCompany:phoneContact];
            }
            [allCompanyArray release];
        }
    }
    //if company field is null
    else
    {
        NSArray *uncategoryCompany=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController] searchContact:@"Uncategorized"]];
        if([uncategoryCompany count]>0)
        {}
        else
        {
            [self createNewCompany:phoneContact];
            [uncategoryCompany release];
            uncategoryCompany=[[NSArray alloc]initWithArray:[[PFCoreDataController sharedCoreDataController] searchContact:@"Uncategorized"]];
        }


        //add new uncategorized key contacts
        NSInteger newContactId = [PFCommon getNewKeyContactId];

        [phoneContact setValue:(id)[[uncategoryCompany objectAtIndex:0]contactId] forKey:KEYCONTACTS_CONTACTID];
        [phoneContact setValue:[NSNumber numberWithInt:newContactId] forKey:KEYCONTACTS_ID];
        [[PFCoreDataController sharedCoreDataController]addKeyContact:phoneContact];

        [[PFCoreDataController sharedCoreDataController]addSynchedContacts:newContactId:[NSString stringWithFormat:@"%d",[[phoneContact valueForKey:@"personUId"] intValue]]];


        [uncategoryCompany release];
    }
}

[phoneContactsArray release];
phoneContactsArray = nil;

//adds the last synched contact date
[[PFCoreDataController sharedCoreDataController] addLastContactSynchedDate:[PFCommon getContactSyncId] :[NSDate date]];

[PFCommon setContactSyncStatus:YES];
[self performSelector:@selector(hideActivityIndicatorView) withObject:nil afterDelay:1.0f];

}


- (void)createNewCompany:(NSMutableDictionary*)aCompany

{ NSString * nullValue = @“”; NSNumber * zeroValue = [NSNumber numberWithInt：0];

NSDictionary *company = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                         zeroValue, CONTACTS_ID,
                         nullValue, CONTACTS_COMPANYNAME,
                         nullValue, CONTACTS_STREET,
                         nullValue, CONTACTS_STATE,
                         nullValue, CONTACTS_CITY,
                         nullValue, CONTACTS_ZIP,
                         nullValue, CONTACTS_COUNTRY,
                         nullValue, CONTACTS_PHONE,
                         nullValue, CONTACTS_WEBSITE,
                         nil];

NSString *companyName = (NSString*)[aCompany valueForKey:@"company_Name"];
NSString * streetName = (NSString*)[aCompany valueForKey:@"street"];
NSLog(@"companyName  %@",companyName);

//check the company is already added then keep old id
NSInteger contactId=-1;
for(int i=0;i<[oldSyncCompanies count];i++)
{

    NSMutableDictionary *tempDict=[oldSyncCompanies objectAtIndex:i];
    int oldDevId=[[tempDict valueForKey:@"devId"]intValue];
    int newDevId=[[aCompany valueForKey:@"personUId"]intValue];

    if(oldDevId==newDevId)
        contactId=[[tempDict valueForKey:@"appId"] intValue];
}

if(contactId==-1)
    contactId=[PFCommon getNewContactId];

if((companyName == NULL) || ([companyName isEqualToString:@""]) || ([trimmedText(companyName) length] == 0))
{
    [company setValue:@"Uncategorized" forKey:CONTACTS_COMPANYNAME];
    [company setValue:[NSNumber numberWithInt:-1] forKey:CONTACTS_ID];
    contactId=-1;
}
else
{
    [company setValue:[aCompany valueForKey:@"company_Name"] forKey:CONTACTS_COMPANYNAME];
    [company setValue:[NSNumber numberWithInt:contactId] forKey:CONTACTS_ID];
    //we added due to display company details/address Nikunj
    [company setValue:[aCompany valueForKey:KEYCONTACTS_STREET] forKey:CONTACTS_STREET];
    [company setValue:[aCompany valueForKey:KEYCONTACTS_CITY] forKey:CONTACTS_CITY];
    [company setValue:[aCompany valueForKey:KEYCONTACTS_STATE] forKey:CONTACTS_STATE];
    [company setValue:[aCompany valueForKey:KEYCONTACTS_ZIP] forKey:CONTACTS_ZIP];
    [company setValue:[aCompany valueForKey:KEYCONTACTS_COUNTRY] forKey:CONTACTS_COUNTRY];
    [company setValue:[aCompany valueForKey:KEYCONTACTS_PHONE] forKey:CONTACTS_PHONE];
    [company setValue:[aCompany valueForKey:@"website"] forKey:CONTACTS_WEBSITE];

    NSString *personName = (NSString*)[aCompany valueForKey:KEYCONTACTS_NAME];
    //NSLog(@"personName %@",personName);
    if((personName == NULL) || ([personName isEqualToString:@""]) || ([trimmedText(personName) length] == 0))
    {
        [company setValue:[aCompany valueForKey:KEYCONTACTS_STREET] forKey:CONTACTS_STREET];
        [company setValue:[aCompany valueForKey:KEYCONTACTS_CITY] forKey:CONTACTS_CITY];
        [company setValue:[aCompany valueForKey:KEYCONTACTS_STATE] forKey:CONTACTS_STATE];
        [company setValue:[aCompany valueForKey:KEYCONTACTS_ZIP] forKey:CONTACTS_ZIP];
        [company setValue:[aCompany valueForKey:KEYCONTACTS_COUNTRY] forKey:CONTACTS_COUNTRY];
        [company setValue:[aCompany valueForKey:KEYCONTACTS_PHONE] forKey:CONTACTS_PHONE];
        [company setValue:[aCompany valueForKey:@"website"] forKey:CONTACTS_WEBSITE];
    }
}

[[PFCoreDataController sharedCoreDataController]addSynchedCompany:contactId:[NSString stringWithFormat:@"%d",[[aCompany valueForKey:@"personUId"] intValue]]];
[[PFCoreDataController sharedCoreDataController]addNewCompanyToApp:company];

}

Answer 1

为了提高应用程序的性能，您应该将提取物批量分批到商店。这意味着当从数据库中读取数据时，您只为每次获取加载一定数量的实体，而不是一次加载所有实体。这很容易做到：您只需使用-[NSFetchRequest setFetchBatchSize:]来获取每次获取时要传递给方法的实体数量。如果您使用NSFetchedResultsController在UITableView中显示联系人，它将在用户滚动表格时自动加载新实体。

要保存数据，您只需在后台线程中执行此操作。

Answer 2

没有涉及上面的代码墙，一些通用提示：

使用仪器计算出花费的时间。您的代码有几个部分，也许问题可以缩小？然后在该部分应用更多智能/缓存/逐个表。
检查您使用的是SQLite存储，而不是XML或二进制存储。
这是否可以转到后台线程，因此您的UI不受影响？

花费太多时间来获取联系人并存储在核心数据问题中

2 个答案: