メソッドがオブジェクトに渡された後に、オブジェクトが割り当て解除される

Question

オブジェクトをメソッドに渡すときに、オブジェクトの値がnullに変更されるアプリケーションがあります。私はブログでこれを見つけることができませんでした。私が何をすべきかを提案してください。私はそれが参照や価値によるもののようなものだとは思っていますが、あまり知らないのです。

 NSNumber* resultSelectedWeekValue; 

と財産

 @property (nonatomic, retain) NSNumber* resultSelectedWeekValue; 

などの* .hファイル内の変数宣言とimplimentaion

@synthesize resultSelectedWeekValue =  _resultSelectedWeekValue; 

にこれは、1つのポップオーバーから値を取得する方法を委任しています

// Show discription of Selected week 
     -(void) getSelectedWeekDelegateMethod:(NSString*) getSelectedWeek { 

     _resultSelectedWeekValue = [_dbObject getSelectedWeekValue:getSelectedWeek]; 

     NSLog(@"This is _tempOzs %@ ", _resultSelectedWeekValue); 

     if ([_productAttributePopover isPopoverVisible]) { 

      [_productAttributePopover dismissPopoverAnimated:YES]; 
     } 
    } 

     NSLog(@"This is _resultSelectedWeekValue %@ and class %@", _resultSelectedWeekValue, [_resultSelectedWeekValue class]); // This say the object is deallocate? this is the code below 

if ((_resultSelectedWeekValue != nil) && (_tempGranularProduct != nil || _tempLiquidProduct != nil) && (_tempLbs != nil || _tempOzs != nil)) { 

    if ([_tempLbs intValue] != 0) { 

     NSDate* _createdDate = [NSDate date]; 
     //Create the dateformatter object 
     NSDateFormatter* _formatter = [[[NSDateFormatter alloc] init] autorelease]; 
     //Set the required date format 
     [_formatter setDateFormat:@"yyyy-MM-dd"]; 
     //Get the string date 
     NSString* _formatDate = [_formatter stringFromDate:_createdDate]; 
     NSNumber* _getNumBags = [self calculateGranularBags]; 
     NSNumber* _getProductID = [[_dbObject getAppliedProductWeightAttribute:_tempGranularProduct] objectForKey:@"productid"]; 
     NSNumber* _totalInvestment = [[NSNumber alloc] initWithInt:0]; 


     NSLog(@"This is _tempScenarioId %@ and class %@", _tempScenarioId, [_tempScenarioId class]); 
     NSLog(@"This is _resultSelectedWeekValue %@ and class %@", _resultSelectedWeekValue, [_resultSelectedWeekValue class]); 
     NSLog(@"This is _getProductID %@ and class %@", _getProductID, [_getProductID class]); 
     NSLog(@"This is _tempLbs %@ and class %@", _tempLbs, [_tempLbs class]); 
     NSLog(@"This is _getNumBags %@ and class %@", _getNumBags, [_getNumBags class]); 
     NSLog(@"This is _totalInvestment %@ and class %@", _totalInvestment, [_totalInvestment class]); 
     NSLog(@"This is _tempCarryover %@ and class %@", _tempCarryover, [_tempCarryover class]); 



     NSMutableDictionary* _scenarioProductAttribute = [NSMutableDictionary dictionaryWithObjectsAndKeys: 
                _tempScenarioId, @"scenarioid", 
                _resultSelectedWeekValue, @"weekvalue", 
                _getProductID, @"productid", 
                _tempLbs, @"lbper1000ft", 
                _getNumBags, @"numberofbags", 
                _totalInvestment, @"totalinvestment", 
                _tempCarryover, @"carry_n", 
                _formatDate, @"date", 
                nil]; 
     [_totalInvestment release]; 

     _tempScenarioId = [_dbObject insertScenarioProductAttribute:_scenarioProductAttribute andScenarioId:_tempScenarioId andProductId:_getProductID andSelectedWeekValue:_resultSelectedWeekValue]; 

     // Check Point 
     [TestFlight passCheckpoint:@"INSERT_GRANULAR_RECORD"]; 
    } 

    if ([_tempOzs intValue] != 0) { 

     NSDate* _createdDate = [NSDate date]; 
     //Create the dateformatter object 
     NSDateFormatter* _formatter = [[[NSDateFormatter alloc] init] autorelease]; 
     //Set the required date format 
     [_formatter setDateFormat:@"yyyy-MM-dd"]; 
     //Get the string date 
     NSString* _formatDate = [_formatter stringFromDate:_createdDate]; 
     NSNumber* _getGallons = [self calculateLiquidGallons]; 
     NSNumber* _getProductID = [[_dbObject getAppliedProductWeightAttribute:_tempLiquidProduct] objectForKey:@"productid"]; 
     NSNumber* _totalInvestment = [[NSNumber alloc] initWithInt:0]; 


     NSLog(@"This is _tempScenarioId %@ and class %@", _tempScenarioId, [_tempScenarioId class]); 
     NSLog(@"This is _resultSelectedWeekValue %@ and class %@", _resultSelectedWeekValue, [_resultSelectedWeekValue class]); // This say the object is deallocate? 
     NSLog(@"This is _getProductID %@ and class %@", _getProductID, [_getProductID class]); 
     NSLog(@"This is _tempOzs %@ and class %@", _tempOzs, [_tempOzs class]); 
     NSLog(@"This is _getGallons %@ and class %@", _getGallons, [_getGallons class]); 
     NSLog(@"This is _totalInvestment %@ and class %@", _totalInvestment, [_totalInvestment class]); 
     NSLog(@"This is _tempCarryover %@ and class %@", _tempCarryover, [_tempCarryover class]); 



     NSMutableDictionary* _scenarioProductAttribute = [NSMutableDictionary dictionaryWithObjectsAndKeys: 
                  _tempScenarioId, @"scenarioid", 
                  _resultSelectedWeekValue, @"weekvalue", 
                  _getProductID, @"productid", 
                  _tempOzs, @"ounces", 
                  _getGallons, @"gallons", 
                  _totalInvestment, @"totalinvestment", 
                  _tempCarryover, @"carry_n", 
                  _formatDate, @"date", 
                  nil]; 
     [_totalInvestment release]; 
     _tempScenarioId = [_dbObject insertScenarioProductAttribute:_scenarioProductAttribute andScenarioId:_tempScenarioId  andProductId:_getProductID andSelectedWeekValue:_resultSelectedWeekValue]; 

Answer 1

への変更行を：

self._resultSelectedWeekValue = [_dbObject getSelectedWeekValue:getSelectedWeek]; 

あなたが "_resultSelectedWeekValue" 変数値の問題に直面していた場合。