How to transfer a CCSprite from one parent to another?

I have a CCSprite called sprite that is a child of a CCLayer called movingLayer that is itself a child of the current CCLayer running my game logic, so it is self in this case. movingLayer is moving back and forth across the screen in a repeat forever action and sprite is riding along on it. I want to get sprite to "get off" of movingLayer and "get on" to self where it can do some actions of its own.

When I try to do this, I need to tell movingLayer to remove sprite and self to add sprite. This is what I did...

- (void)attack:(id)sender
{
    [sprite stopAllActions];
    [movingLayer removeChild:sprite cleanup:YES];
    [self addChild:sprite z:1];
    CGFloat distance = ccpDistance(sprite.position, ccp(sprite.position.x, -sprite.contentSize.height/2)开发者_JAVA技巧);
    id goDown = [CCMoveTo actionWithDuration:distance/moveDuration position:ccp(sprite.position.x, -sprite.contentSize.height/2)];
    id repeatDown = [CCRepeatForever actionWithAction:[CCSequence actions:[CCMoveTo actionWithDuration:0 position:ccp(sprite.position.x, sprite.contentSize.height/2+self.contentSize.height)], [CCMoveTo actionWithDuration:moveDuration position:ccp(sprite.position.x, -sprite.contentSize.height/2)], nil]];
    id attackAction = [CCSequence actions:goDown, repeatDown, nil];
    [sprite runAction:attackAction];
}

I think stopAllActions is redundant, but that's not the problem. If I remove sprite from movingLayer before adding it to self I crash for accessing a zombie, and if I try to add it to self first, I crash for trying to add something already added.

Have you tried setting cleanup to NO?

Alternatively, try to retain sprite before you remove it from movingLayer, then release it when you're done with it:

[sprite retain];
[movingLayer removeChild:sprite cleanup:YES];
[self addChild:sprite z:1];
[sprite release];