地址簿中的内存泄漏问题iOS

Question

从通讯簿获取联系人详细信息时，我遇到内存泄漏问题。以下是我提取细节的代码。谁能帮我？

NSMutableDictionary *mycontacts = [[NSMutableDictionary alloc] init]; 
ABAddressBookRef addressBookRef =ABAddressBookCreateWithOptions(NULL, NULL); 

    if (ABAddressBookGetAuthorizationStatus() ==kABAuthorizationStatusNotDetermined) 
    { 
     ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error) 
     { 
      if (granted) 
       { 
        ABAddressBookRef addressBook =ABAddressBookCreateWithOptions(NULL, NULL); 
      //###MEMORY LEAK LINE 
        NSArray * allPeople = (__bridge NSArray*) ABAddressBookCopyArrayOfAllPeople(addressBook); 
        CFIndex numberOfPeople =ABAddressBookGetPersonCount(addressBook); 
        for(NSUInteger i = 0; i < numberOfPeople; i++) 
        { 
         ABRecordRef person =CFArrayGetValueAtIndex((__bridge CFArrayRef)(allPeople), i); 
         NSString *mobileNumber =[[NSString alloc]init]; 
         NSString *firstName = (__bridge NSString *)(ABRecordCopyValue(person,kABPersonFirstNameProperty)); 
         ABMultiValueRef phoneNumbers = ABRecordCopyValue(person,kABPersonPhoneProperty); 
         for (CFIndex i = 0; i <ABMultiValueGetCount(phoneNumbers); i++) 
         { 
          NSString *phoneNumber = (__bridge_transfer NSString *)ABMultiValueCopyValueAtIndex(phoneNumbers, i); 
          if(phoneNumber.length>0) 
          { 
           mobileNumber=phoneNumber; 
           mobileNumber= [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""]; 
           mobileNumber= [mobileNumber stringByReplacingOccurrencesOfString:@"." withString:@""]; 
           mobileNumber= [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""]; 
           mobileNumber= [mobileNumber stringByReplacingOccurrencesOfString:@"+" withString:@""]; 
           NSString *unfilteredString = mobileNumber; 
           NSCharacterSet *notAllowedChars = [[NSCharacterSet characterSetWithCharactersInString:@"1234567890"] invertedSet]; 
           NSString*updatedmobileNumber = [[unfilteredString componentsSeparatedByCharactersInSet:notAllowedChars]componentsJoinedByString:@""]; 

           [mycontacts setObject:updatedmobileNumber forKey:firstName]; 
           break; 
          } 
          if(phoneNumber !=nil) 
          { 
           CFRelease((__bridge CFTypeRef)(phoneNumber)); 
          } 

         } 
         if(phoneNumbers !=nil) 
         { 
          CFRelease(phoneNumbers); 
         } 

         if(person !=nil) 
         { 
          CFRelease(person); 
         } 

         if(firstName !=nil) 
         { 
          CFRelease((__bridge CFTypeRef)(firstName)); 
         } 
        } 
        if(allPeople !=nil) 
        { 
         CFRelease((__bridge CFTypeRef)(allPeople)); 
        } 
       } 
       else 
       { 
         // User denied access 
         // Display an alert telling user the contact could not be added 
       } 
      }); 
    } 

Answer 1

我可以看到这一行。

ABAddressBookRef addressBook =ABAddressBookCreateWithOptions(NULL, NULL);

所以，你应该如下使用此之后释放，

CFRelease(addressBook);