NsMutable阵列不添加对象iOS

问题描述：

我正在从用户手机访问联系人。一切都很完美，但是当我将它添加到NSMutableArray中时，则不会输入任何内容。在我点击阵列时显示0X16bed870的断点。我的代码如下。NsMutable阵列不添加对象iOS

-(void)mycontact 
{ 
    NSMutableArray * contactNumbersArray = [[NSMutableArray alloc] init]; 

    CNAuthorizationStatus status = [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts]; 

    if (status == CNAuthorizationStatusDenied || status == CNAuthorizationStatusRestricted) 
    { 
     UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil message:@"This app previously was refused permissions to contacts; Please go to settings and grant permission to this app so it can use contacts" preferredStyle:UIAlertControllerStyleAlert]; 
     [alert addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil]]; 
     [self presentViewController:alert animated:TRUE completion:nil]; 
     return; 
    } 

    CNContactStore *store = [[CNContactStore alloc] init]; 

    [store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) { 

     if (granted == YES) { 

      //keys with fetching properties 

      NSArray *keys = @[CNContactFamilyNameKey, CNContactGivenNameKey, CNContactPhoneNumbersKey, CNContactImageDataKey]; 

      NSString *containerId = store.defaultContainerIdentifier; 

      NSPredicate *predicate = [CNContact predicateForContactsInContainerWithIdentifier:containerId]; 

      NSError *error; 

      NSArray *cnContacts = [store unifiedContactsMatchingPredicate:predicate keysToFetch:keys error:&error]; 

      if (error) { 

       NSLog(@"error fetching contacts %@", error); 

      } else { 

       NSString *phone; 
       NSString *fullName; 
       NSString *firstName; 
       NSString *lastName; 
       UIImage *profileImage; 

       for (CNContact *contact in cnContacts) { 

        // copy data to my custom Contacts class. 
        firstName = contact.givenName; 
        lastName = contact.familyName; 

        if (lastName == nil) { 
         fullName=[NSString stringWithFormat:@"%@",firstName]; 
        } else if (firstName == nil) { 
         fullName=[NSString stringWithFormat:@"%@",lastName]; 
        } else { 
         fullName=[NSString stringWithFormat:@"%@ %@",firstName,lastName]; 
        } 

        UIImage *image = [UIImage imageWithData:contact.imageData]; 
        if (image != nil) { 
         profileImage = image; 
        }else{ 
         profileImage = [UIImage imageNamed:@"person-icon.png"]; 
        } 

        for (CNLabeledValue *label in contact.phoneNumbers) { 

         phone = [label.value stringValue]; 

         if ([phone length] > 0) { 
          [contactNumbersArray addObject:phone]; 
         } 
        } 

        NSDictionary* personDict = [[NSDictionary alloc] initWithObjectsAndKeys: fullName,@"fullName",profileImage,@"userImage",phone,@"PhoneNumbers", nil]; 
       } 

       dispatch_async(dispatch_get_main_queue(), ^{ 
        for(int j=0;j<[contactNumbersArray count];j++) 
        { 
         NSString *newString = [[contactNumbersArray[j] componentsSeparatedByCharactersInSet: 
               [[NSCharacterSet decimalDigitCharacterSet] invertedSet]] 
               componentsJoinedByString:@""]; 

         contactNumbersArray[j]=newString; 
        } 
       }); 
      } 
     } 

    }]; 
}

'NSMutableArray'不会是'nil'会吗（常见错误）？你指的是哪一个数组？此外，为什么你使用'dispatch_async（dispatch_get_main_queue（）'？你似乎没有访问UI ... – Droppy

对我来说，这是不清楚的问题：你在谈论哪个数组？contactNumbersArray？你在哪里放置断点来检查其内容 – ddb

@ddb 是的，我在谈论contactNumbersArray我已经把破发点上电话= [label.value stringValue的];。手机其示值但不执行后增加的contactNumbersArray阵列 –

答

您是通过同一阵列contactNumbersArray循环中，你要更新的值。

他不需要再添加它，他正在编辑它 – ddb

@ddb执行。我想删除 - ，（，）符号，所以我正在编辑它。 –

NsMutable阵列不添加对象iOS

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