您好，
我发现这个泄漏确实有问题，目前正在花费很多时间。
我有一个名为“AccessQuestionsDB.m”的类。在本课程中，我有以下代码：
- (NSMutableArray *)readQuestion: (int)questionNr {
NSLog(@">>readQuestion<<");
NSMutableArray *read_Question = [[NSMutableArray alloc] initWithCapacity: 0];
NSError *error;
//=========PREPARE CORE DATA DB===========//
if (managedObjectContext == nil) { managedObjectContext = [(FamQuiz_R0_1AppDelegate *)
[[UIApplication sharedApplication] delegate] managedObjectContext]; }
// Define qContext
NSManagedObjectContext *qContext = [self managedObjectContext];
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription
entityForName:@"questions" inManagedObjectContext:qContext];
[fetchRequest setEntity:entity];
NSArray *fetchedObjects = [qContext executeFetchRequest:fetchRequest error:&error];
for (NSManagedObject *info in fetchedObjects) {
if ([[info valueForKey:@"idQ"] intValue] == questionNr) {
[read_Question addObject:[info valueForKey:@"question"]];
[read_Question addObject:[info valueForKey:@"qRightAnswer"]];
[read_Question addObject:[info valueForKey:@"qWrongAnswer1"]];
[read_Question addObject:[info valueForKey:@"qWrongAnswer2"]];
}
}
[read_Question addObject:@"XXXX"]; // Here to test a suggestion from someone to find the leak
[read_Question removeLastObject]; // Here to test a suggestion from someone to find the leak
[fetchRequest release];
return [read_Question autorelease];
}
在上面的代码中，我有以下几行：
//=========PREPARE CORE DATA DB===========//
if (managedObjectContext == nil) { managedObjectContext = [(FamQuiz_R0_1AppDelegate *)
[[UIApplication sharedApplication] delegate] managedObjectContext]; }
managedObjectContext在.h文件中定义：
NSManagedObjectContext *managedObjectContext;
我在这个.m文件中的两个附加模块上有相同的if语句，这没有问题。但是，我永远不会发布。
当我发布时，我当然遇到了麻烦。我确实尝试更改三个名称并发布，所以有唯一的名称，但这不起作用。
这可能是我在这个.m文件中泄漏的原因吗？
当我被困住，成为新人时，我需要任何帮助，因为我真的不知道如何找到除此之外的实际泄漏。
==== UPDATE =====
这让我发疯，尤其是因为它指向不同的地方。但是，我已经取出了readQuestion并将其放在自己的类中。所以现在整个.m看起来像：
//
#import "AccessQuestionsDB.h"
#import "FamQuiz_R0_1AppDelegate.h"
#import "AccessCurrentGameData.h"
@implementation AccessQuestionsDB
//@synthesize fetchedResultsController, managedObjectContext;
@synthesize managedObjectContext;
@synthesize allEasyArrayQ;
@synthesize allMediumArrayQ;
@synthesize allHardArrayQ;
@synthesize allDummyQ;
@synthesize allJointQ;
@synthesize easyQ;
@synthesize mediumQ;
@synthesize hardQ;
@synthesize masterQuestionsArray;
//@synthesize read_Question;
- (NSMutableArray *)getPlayerLevelsAndQuestions {
NSString *filePath2 = [self dataFilePath2];
NSMutableArray *playersAndQuestionsArray = [[NSArray alloc] initWithContentsOfFile:filePath2];
[playersAndQuestionsArray autorelease];
return playersAndQuestionsArray;
}
- (void)createQuestionsList: (NSMutableArray *)diffArray {
NSLog(@">>createQuestionsList<<");
int nrOfQuestions = [[diffArray objectAtIndex:0]intValue];
int nrOfEasyPlayers = [[diffArray objectAtIndex:1]intValue];
int nrOfMediumPlayers = [[diffArray objectAtIndex:2]intValue];
int nrOfHardPlayers = [[diffArray objectAtIndex:3]intValue];
int nrOfPlayers = nrOfEasyPlayers + nrOfMediumPlayers + nrOfHardPlayers;
allHardArrayQ = [[NSMutableArray alloc]init];
allMediumArrayQ = [[NSMutableArray alloc]init];
allEasyArrayQ = [[NSMutableArray alloc]init];
allDummyQ = [[NSMutableArray alloc]init];
allJointQ = [[NSMutableArray alloc]init];
hardQ = [[NSMutableArray alloc]init];
mediumQ = [[NSMutableArray alloc]init];
easyQ = [[NSMutableArray alloc]init];
masterQuestionsArray = [[NSMutableArray alloc] initWithObjects:
[NSNumber numberWithBool:[[diffArray objectAtIndex:4]boolValue]],
[NSNumber numberWithInt:nrOfHardPlayers],
[NSNumber numberWithInt:nrOfMediumPlayers],
[NSNumber numberWithInt:nrOfEasyPlayers],
[NSNumber numberWithInt:nrOfQuestions],
nil];
NSError *error;
//=========PREPARE CORE DATA DB===========//
if (self.managedObjectContext == nil) { self.managedObjectContext = [(FamQuiz_R0_1AppDelegate *)
[[UIApplication sharedApplication] delegate] managedObjectContext]; }
// Define qContext
NSManagedObjectContext *qContext = [self managedObjectContext];
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription
entityForName:@"questions" inManagedObjectContext:qContext];
[fetchRequest setEntity:entity];
NSArray *fetchedObjects = [qContext executeFetchRequest:fetchRequest error:&error];
for (NSManagedObject *info in fetchedObjects) {
if ([[info valueForKey:@"qDiff"] intValue] == 1) {
[allEasyArrayQ addObject:[info valueForKey:@"idQ"]];
} else if ([[info valueForKey:@"qDiff"] intValue] == 2) {
[allMediumArrayQ addObject:[info valueForKey:@"idQ"]];
} else if ([[info valueForKey:@"qDiff"] intValue] == 3) {
[allHardArrayQ addObject:[info valueForKey:@"idQ"]];
}
}
//===SHUFFLE QUESTIONS THREE TIMES===//
[allEasyArrayQ shuffle];
[allMediumArrayQ shuffle];
[allHardArrayQ shuffle];
[allEasyArrayQ shuffle];
[allMediumArrayQ shuffle];
[allHardArrayQ shuffle];
[allEasyArrayQ shuffle];
[allMediumArrayQ shuffle];
[allHardArrayQ shuffle];
if ([[diffArray objectAtIndex:4]boolValue] == NO) {
//=====CHECK WHAT DIFF-LVLs SHOULD PARTICIPATE====//
if ([[diffArray objectAtIndex:5]boolValue] == YES) {
[allDummyQ addObjectsFromArray:allEasyArrayQ];
}
if ([[diffArray objectAtIndex:6]boolValue] == YES) {
[allDummyQ addObjectsFromArray:allMediumArrayQ];
}
if ([[diffArray objectAtIndex:7]boolValue] == YES) {
[allDummyQ addObjectsFromArray:allHardArrayQ];
}
//====SHUFFLE THREE TIMES====//
[allDummyQ shuffle];
[allDummyQ shuffle];
[allDummyQ shuffle];
nrOfQuestions = nrOfQuestions * nrOfPlayers;
//====SELECT THE RIGHT AMOUNT OF QUESTIONS====//
for (int oo = 0; oo < nrOfQuestions; oo++) {
[allJointQ addObject:[allDummyQ objectAtIndex:oo]];
}
[masterQuestionsArray addObjectsFromArray:allJointQ];
}
else { // Use diff
//===SELECT EASY QUESTIONS===//
for (int oo = 0; oo < (nrOfEasyPlayers * nrOfQuestions); oo++) {
[easyQ addObject:[allEasyArrayQ objectAtIndex:oo]];
}
//===SELECT MEDIUM QUESTIONS===//
for (int oo = 0; oo < (nrOfMediumPlayers * nrOfQuestions); oo++) {
[mediumQ addObject:[allMediumArrayQ objectAtIndex:oo]];
}
//===SELECT HARD QUESTIONS===//
for (int oo = 0; oo < (nrOfHardPlayers * nrOfQuestions); oo++) {
[hardQ addObject:[allHardArrayQ objectAtIndex:oo]];
}
[masterQuestionsArray addObjectsFromArray:hardQ];
[masterQuestionsArray addObjectsFromArray:mediumQ];
[masterQuestionsArray addObjectsFromArray:easyQ];
}
//======SAVE TO FILE=======//
//Prepare File Manager
NSString *filePath2 = [self dataFilePath2];
[masterQuestionsArray writeToFile:filePath2 atomically: TRUE];
[allEasyArrayQ release];
[allMediumArrayQ release];
[allHardArrayQ release];
[allDummyQ release];
[allJointQ release];
[easyQ release];
[mediumQ release];
[hardQ release];
[masterQuestionsArray release];
[fetchRequest release];
// [managedObjectContext release];
}
- (NSMutableArray *)askForQuestionNumbers {
//====GET DATA TO BE ABLE TO SELECT QUESTIONS====//
AccessCurrentGameData *askForPlayerInfoFunction = [AccessCurrentGameData new];
// NSMutableArray *playersInGameAndTheirDiff = [askForPlayerInfoFunction askForQuestionNumbers];
[askForPlayerInfoFunction release];
return 0;
}
- (NSMutableArray *)shufflePlayers: (NSMutableArray *)playerList {
[playerList shuffle];
return playerList;
}
//====HERE THE POPULATE DB SHOULD RESIDE=====//
-(NSString *)dataFilePath {
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [path objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:kGameSETUP_PLIST];
//return @"/Users/PeterK/Desktop/gamesetup.plist";
}
-(NSString *)dataFilePath2 {
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [path objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:kMasterQUESTIONS_PLIST];
}
@end
// =========SHUFFLE==========//
@implementation NSMutableArray (Shuffle)
- (void) shuffle {
for (NSInteger i = [self count] - 1; i > 0; --i) {
[self exchangeObjectAtIndex: arc4random() % (i+1) withObjectAtIndex: i];
}
}
@end
@implementation NSArray (Shuffle)
- (NSArray*) shuffledArray {
NSMutableArray* shuffledArray = [NSMutableArray arrayWithArray: self];
[shuffledArray shuffle];
return shuffledArray;
}
@end
Instruments指出泄漏的那条线现在是：
NSArray * fetchedObjects = [qContext executeFetchRequest：fetchRequest error：＆amp; error];
这是第79行，它表示100％。