Ios NSArrayM insertObject:atIndex:：对象不能为零

您好，这里是下面的函数，我正在从函数中收集

NSString

值，如firstname和last name，并在数组中赋值

- (void)getPersonOutOfAddressBook
{


    ABAddressBookRef addressBook = ABAddressBookCreate();
if (addressBook != nil)
{
    NSLog(@"Succesful.");

    NSArray *allContacts = (__bridge_transfer NSArray *)ABAddressBookCopyArrayOfAllPeople(addressBook);

    NSUInteger i = 0;
    NSLog(@" Result :%d",[allContacts count]);
    for (i = 0; i < [allContacts count]; i++)
    {
        ABRecordRef contactPerson = (__bridge ABRecordRef)allContacts[i];



        NSString *firstName = (__bridge_transfer NSString *)ABRecordCopyValue(contactPerson, kABPersonFirstNameProperty);

        NSString *lastName =  (__bridge_transfer NSString *)ABRecordCopyValue(contactPerson, kABPersonLastNameProperty);


        NSMutableArray *name = [NSMutableArray array];
        [name addObject:firstName];
        [name addObject:lastName];


        [self displaynames:name];

        //NSLog(@"FirstNAme::::: LastNAME::::MobileNUMb::::EMail:::  %@ %@",firstName,lastName);

        ABMultiValueRef mobile=ABRecordCopyValue(contactPerson, kABPersonPhoneProperty);

        for (int k=0;k<ABMultiValueGetCount(mobile); k++)
        {
            NSString *mobileNo = (__bridge_transfer NSString *)ABMultiValueCopyValueAtIndex(mobile, k);
          //  NSLog(@"mobile number: %@",mobileNo);


        }

}

-(void)displaynames:(NSMutableArray*)names{
for(NSMutableArray* name in names){

    NSLog(@"MyResult:%@ %@",[names objectAtIndex:0],[names objectAtIndex:1]);

    messageToSend = [messageToSend stringByAppendingString:[names objectAtIndex:0]];
    messageToSend = [messageToSend stringByAppendingString:[names objectAtIndex:1]];
}
}

此处messageToSend是一个NSMutableString

因此，在上面的代码中，我收集了所有的firstname和lastname并将其放入数组中。当我在iphone中运行此代码时，会显示错误

[\uu NSArrayM insertObject:atIndex:]：object不能为nil'

在

NSLog（@“Myresult”）之后它显示了两次名字和姓氏。所以，有人能告诉我哪里出了问题，以及我如何收集电话号码。我必须在上面的代码中做哪些更改以避免出现错误，并且只显示几个名字，而不是全部

它显示

2013-06-03 11:40:12.524 GetContacts[1173:1bb03] Succesful.
2013-06-03 11:40:12.539 getlist[1173:1bb03]  Result :2
2013-06-03 11:40:12.567 getlist[1173:1bb03] MyResult:john cena
2013-06-03 11:40:12.568 getlist[1173:1bb03] Successsssss::::::
2013-06-03 11:40:12.569 getlist[1173:1bb03] MyResult:john cena
2013-06-03 11:40:12.571 getlist[1173:1bb03] Successsssss::::::
2013-06-03 11:40:12.734 getlist[1173:1bb03] MyResult:peter john
2013-06-03 11:40:12.735 getlist[1173:1bb03] Successsssss::::::
2013-06-03 11:40:12.736 getlist[1173:1bb03] MyResult:peter john
2013-06-03 11:40:12.737 getlist[1173:1bb03] Successsssss::::::

首先检查放入数组中的数据是否为零，如果为零，则跳过它

大概是这样的：

if(firstName != nil)
    [yourMutableArray addObject:firstname];

您明白了。
要访问大多数内容，请使用下面的代码

            CFStringRef firstName = ABRecordCopyValue(record , kABPersonFirstNameProperty);
            CFStringRef LastName = ABRecordCopyValue(record, kABPersonLastNameProperty);
            CFStringRef companyRef = ABRecordCopyValue(record, kABPersonOrganizationProperty);
            CFDateRef birthDate = ABRecordCopyValue(record, kABPersonBirthdayProperty);


            CFStringRef prefixName = ABRecordCopyValue(record , kABPersonPrefixProperty);
            CFStringRef phoneticFirstName = ABRecordCopyValue(record , kABPersonFirstNamePhoneticProperty);
            CFStringRef phoneticLastName = ABRecordCopyValue(record , kABPersonLastNamePhoneticProperty);
            CFStringRef middleName = ABRecordCopyValue(record , kABPersonMiddleNameProperty);
            CFStringRef suffixName = ABRecordCopyValue(record , kABPersonSuffixProperty);
            CFStringRef nickName = ABRecordCopyValue(record , kABPersonNicknameProperty);
            CFStringRef jobTitle = ABRecordCopyValue(record , kABPersonJobTitleProperty);
            CFStringRef department = ABRecordCopyValue(record , kABPersonDepartmentProperty);
            CFStringRef notes = ABRecordCopyValue(record , kABPersonNoteProperty);



            NSString *LastNameStr = (NSString *)LastName;
            NSString *firstNameStr = (NSString *)firstName;
            NSString *companyStr = (NSString *)companyRef;
            NSDate *birthDateValue = (NSDate *)birthDate;

            NSString *prefixNameStr = (NSString *)prefixName;
            NSString *phoneticFirstNameStr = (NSString *)phoneticFirstName;
            NSString *phoneticLastNameStr = (NSString *)phoneticLastName;
            NSString *middleNameStr = (NSString *)middleName;
            NSString *suffixNameStr = (NSString *)suffixName;
            NSString *nickNameStr = (NSString *)nickName;
            NSString *jobTitleStr = (NSString *)jobTitle;
            NSString *departmentStr = (NSString *)department;
            NSString *notesStr = (NSString *)notes;

如果错误地推送某个视图控制器而不是另一个视图控制器，则会出现此错误。对我来说

我的代码是。。MainViewController*mainVC=[[UIStoryboard Storyboard with name:@“Main”bundle:nil]实例化视图控制器的标识符：@“mainView”]

[self.navigationController presentViewController:mainVC动画：是完成：无]

而不是。。。。
SWRevealViewController*mainVC=[[UIStoryboard Storyboard with name:@“Main”bundle:nil]实例化eviewcontroller的标识符：@“revealView”]

[self.navigationController presentViewController:mainVC动画：是完成：无]

因此，请确保您正在按正确的视图控制器。我希望这对某些人有所帮助。
messageToSend在哪里分配？在ViewDidload方法中，请检查您为NSMutableArray分配名字和姓氏的位置是否为零？请将NsLog放在将对象添加到数组之前，或者在将对象插入数组之前使用if（firstname）{[add object]；}if（lastname）{[addobject]}在将对象添加到数组时，请检查它是否为零？如果为nil，则不要将其添加到数组中，否则将其添加到数组中。你清楚吗？[name addObject:firstName]；[name addObject:lastName]；在添加对象之前，请检查名字，lastname不是空的，我知道了，我把它放在上面的代码中，但我会写什么else语句？？如果我跳过else，它工作得很好，rite？？？@user2443391是的，你可以跳过其他语句part@RahulVyas谢谢你它的工作原理是一样的我如何在上面的代码中检索电话号码..我必须做什么更改才能获取电话号码also@RahulVyas谢谢你，也是这样的我该怎么办在上面的代码中检索电话号码..我必须做哪些更改才能同时获取电话号码
            CFStringRef firstName = ABRecordCopyValue(record , kABPersonFirstNameProperty);
            CFStringRef LastName = ABRecordCopyValue(record, kABPersonLastNameProperty);
            CFStringRef companyRef = ABRecordCopyValue(record, kABPersonOrganizationProperty);
            CFDateRef birthDate = ABRecordCopyValue(record, kABPersonBirthdayProperty);


            CFStringRef prefixName = ABRecordCopyValue(record , kABPersonPrefixProperty);
            CFStringRef phoneticFirstName = ABRecordCopyValue(record , kABPersonFirstNamePhoneticProperty);
            CFStringRef phoneticLastName = ABRecordCopyValue(record , kABPersonLastNamePhoneticProperty);
            CFStringRef middleName = ABRecordCopyValue(record , kABPersonMiddleNameProperty);
            CFStringRef suffixName = ABRecordCopyValue(record , kABPersonSuffixProperty);
            CFStringRef nickName = ABRecordCopyValue(record , kABPersonNicknameProperty);
            CFStringRef jobTitle = ABRecordCopyValue(record , kABPersonJobTitleProperty);
            CFStringRef department = ABRecordCopyValue(record , kABPersonDepartmentProperty);
            CFStringRef notes = ABRecordCopyValue(record , kABPersonNoteProperty);



            NSString *LastNameStr = (NSString *)LastName;
            NSString *firstNameStr = (NSString *)firstName;
            NSString *companyStr = (NSString *)companyRef;
            NSDate *birthDateValue = (NSDate *)birthDate;

            NSString *prefixNameStr = (NSString *)prefixName;
            NSString *phoneticFirstNameStr = (NSString *)phoneticFirstName;
            NSString *phoneticLastNameStr = (NSString *)phoneticLastName;
            NSString *middleNameStr = (NSString *)middleName;
            NSString *suffixNameStr = (NSString *)suffixName;
            NSString *nickNameStr = (NSString *)nickName;
            NSString *jobTitleStr = (NSString *)jobTitle;
            NSString *departmentStr = (NSString *)department;
            NSString *notesStr = (NSString *)notes;