ios - 分配对象的潜在泄漏

Question

在分析我的 cocos2d 游戏后，我在这段代码中收到警告“第 525 行分配并存储到‘valueString’中的对象的潜在泄漏”

525  NSString * valueString=[[[NSString alloc] initWithString:[NSString stringWithFormat:@"%@: %@",kGameTimeeng,[allFunctions getTimeFormat:(int) _timeLimit]]] retain];

    if([_language isEqualToString:@"rus"]){
        [valueString release];
        valueString=[[[NSString alloc] initWithString:[NSString stringWithFormat:@"%@: %@",kGameTimerus,[allFunctions getTimeFormat:(int) _timeLimit]]] retain];
    }    

    id sequence=[CCSequence actions:
                 [CCCallFuncND actionWithTarget: allFunctions selector: @selector(setLabelColor:withIndex:) data:(void*)color],
                 [CCCallFuncND actionWithTarget: allFunctions selector: @selector(setLabelValue:withValue:) data:(NSString*)valueString],
                // [CCCallFuncND actionWithTarget: self selector: @selector(setLabelStroke:withTag:) data:(void*)TagCurentPointsLabelStroke],
                 [CCBlink actionWithDuration:0.5f blinks:2],
                 [CCShow action], 
                 [CCCallFuncND actionWithTarget: allFunctions selector: @selector(setLabelColor:withIndex:) data:(void*)colorAfter],

                 nil];

    [_timeLimitLabel runAction:sequence];
    [valueString release];

allFunctions.m

-(void) setLabelValue:(id) sender withValue:(NSString*) value
{   
    CCLabelTTF *label=(CCLabelTTF *)sender;
    NSString * valueString=[[[NSString alloc] initWithString:[NSString stringWithFormat:@"%@",value]] autorelease];
    [label setString:[NSString stringWithFormat:@"%@",valueString]];
   //[valueString release];
}

你能解释一下为什么吗？

Answer 1

525 if([_language isEqualToString:@"rus"]){
        [valueString release];
        valueString=[[[NSString alloc] initWithString:[NSString stringWithFormat:@"%@: %@",kGameTimerus,[allFunctions getTimeFormat:(int) _timeLimit]]] autorelease];
    } else {    
        NSString * valueString=[[[NSString alloc] initWithString:[NSString stringWithFormat:@"%@: %@",kGameTimeeng,[allFunctions getTimeFormat:(int) _timeLimit]]] autorelease];
    }


    id sequence=[CCSequence actions:
                 [CCCallFuncND actionWithTarget: allFunctions selector: @selector(setLabelColor:withIndex:) data:(void*)color],
                 [CCCallFuncND actionWithTarget: allFunctions selector: @selector(setLabelValue:withValue:) data:(NSString*)valueString],
                // [CCCallFuncND actionWithTarget: self selector: @selector(setLabelStroke:withTag:) data:(void*)TagCurentPointsLabelStroke],
                 [CCBlink actionWithDuration:0.5f blinks:2],
                 [CCShow action], 
                 [CCCallFuncND actionWithTarget: allFunctions selector: @selector(setLabelColor:withIndex:) data:(void*)colorAfter],

                 nil];

    [_timeLimitLabel runAction:sequence];