Question

我用三个标签控制器构建了一个应用程序。在我的“Tab1”里面我有仪表板表。如果我点击其中一个单元格，我会得到一个地址簿表。现在要求是当我点击另一个Tab2或Tab3并返回到Tab1时，我应该得到tab1的第一个视图。我使用以下代码在Appdelegate

中获得此要求

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController{

    if(self.tabbarController.selectedIndex == 0){
        NSArray *viewControllersArray = [self.tabbarController viewControllers];
       [((UINavigationController*)[viewControllersArray objectAtIndex:0]) popToRootViewControllerAnimated:NO];      
    }
}

出现的问题是当我在addressbook table（在tab1中）时，我点击了tab2按钮并返回到tab1。我收到 EXC_BAD_ACCESS 错误。我使用NSZombie来查找错误，并说

"-[AddressBookViewController tableView:cellForRowAtIndexPath:]: message sent to deallocated instance 0x12639ca0"

除了地址簿tableView之外，代码与其他viewController一起正常工作。对于地址簿视图控制器（位于tab1的详细页面中），我已经过滤了包含电子邮件地址的联系人。这就是代码的样子

ABAddressBookRef addressBook = ABAddressBookCreate();
if(addressBook != nil) {

        NSArray *allPeoplearray = (__bridge_transfer NSArray *)ABAddressBookCopyArrayOfAllPeople(addressBook);
        NSUInteger peopleCounter = 0;

        for(peopleCounter = 0;peopleCounter<[allPeoplearray count];peopleCounter++){

            thisPerson = (__bridge ABRecordRef)[allPeoplearray objectAtIndex:peopleCounter];

            NSString *firstName1 = (__bridge_transfer NSString *)ABRecordCopyValue(thisPerson, kABPersonFirstNameProperty);
            firstName1=[[[firstName1 substringToIndex:1] uppercaseString] stringByAppendingString:[firstName1 substringFromIndex:1]];
            NSString *secondName1 = (__bridge_transfer NSString *)ABRecordCopyValue(thisPerson, kABPersonLastNameProperty);
            secondName1=[[[secondName1 substringToIndex:1] uppercaseString] stringByAppendingString:[secondName1 substringFromIndex:1]];
            if(secondName1 == NULL){
                secondName1 = @"";
            }
            if(firstName1 == NULL){
                firstName1 = @"";
            }
            long counter =  [self personRecord:thisPerson];

            if(counter == 0){
                NSLog(@"hello");
            }else {
                NSString *Name = [NSString stringWithFormat:@"%@ %@",firstName1,secondName1];

                // [allListArray addObject:[typeName1 NameOfPerson:Name recordNumber:thisPerson]]; 
                NSMutableDictionary *newDict1 = [[NSMutableDictionary alloc]initWithObjectsAndKeys:firstName1,@"firstName",secondName1,@"secondName",thisPerson,@"id",Name,@"fullName", nil];

                [newArray addObject:newDict1];
            }
        }
        // if([[name objectForKey:@"secondName"]isEqualToString:@""] || [[[name objectForKey:@"secondName"]substringToIndex:1] rangeOfCharacterFromSet:notDigits].location == NSNotFound){

        NSSortDescriptor *sortDescriptor;
        sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name"
                                                     ascending:YES];
        NSArray *sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
        data = [newArray sortedArrayUsingDescriptors:sortDescriptors] ;

        found1 = NO;

        for(NSDictionary *name in data){
            BOOL numberYes = [self NumberExits:[name objectForKey:@"fullName"]];

            if(numberYes){

                if(!found1){
                    [self.sections setValue:[[NSMutableArray alloc] init] forKey:@"#"];
                    found1 = YES;
                }

                NSLog(@" %@",[name objectForKey:@"fullName"]);

            }else {
                 NSLog(@" %@",[name objectForKey:@"fullName"]);
                NSString *chars;
                if([[name objectForKey:@"secondName"]isEqualToString:@""]){
                    chars = [[name objectForKey:@"firstName"]substringToIndex:1];
                }else {
                    chars = [[name objectForKey:@"secondName"]substringToIndex:1];
                }
                found = NO;

                for( NSString *str in [self.sections allKeys]){

                    if([str isEqualToString:chars]){

                        found = YES;
                    }


                }
                if(!found){

                    [self.sections setValue:[[NSMutableArray alloc] init] forKey:chars];

                }
            }
        }

        NSLog(@"%@",[self.sections allKeys]);
        for(NSDictionary *name in data){
             BOOL numberYes = [self NumberExits:[name objectForKey:@"fullName"]];
            if(numberYes){
            [[self.sections objectForKey:@"#"] addObject:name];
            }
            else {
                if([[name objectForKey:@"secondName"]isEqualToString:@""]){
                    [[self.sections objectForKey:[[name objectForKey:@"firstName"] substringToIndex:1]] addObject:name];

                }else {
                    [[self.sections objectForKey:[[name objectForKey:@"secondName"] substringToIndex:1]] addObject:name];
                }

                //[[self.sections objectForKey:[[name objectForKey:@"secondName"] substringToIndex:1]] addObject:name];
            }

            NSLog(@"name = %@",[name objectForKey:@"fullName"]);

        }
        NSLog(@" keys = %@",self.sections );
    }

    NSLog(@"section = %@",self.sections);
}

- (long)personRecord:(ABRecordRef)paramPerson {

    if(paramPerson == nil){

        NSLog(@"The given Person is Null");
    }

    ABMutableMultiValueRef emails = ABRecordCopyValue(paramPerson, kABPersonEmailProperty);
    if(emails == nil){

        return 0;
    }

    NSLog(@"%ld",ABMultiValueGetCount(emails));
    // return (ABMultiValueGetCount(emails));

    return (ABMultiValueGetCount(emails));
}

EXC_BAD_ACCESS切换tabControllers时

0 个答案: