scheduleOnce在cocos2d-iphone崩溃

Question

我尝试删除具有延迟时间的目标，我这样编码

-(void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
  UITouch *touch = [touches anyObject];
  CGPoint location = [self convertTouchToNodeSpace: touch];

  targetsToRemove = [[NSMutableArray array] init]; 
  for (CCSprite *target in _targets) {// here _targets is NSMutableArray
    if (CGRectContainsPoint(target.boundingBox, location)) {
        [targetsToRemove addObject:target];
    }
  }
  [self scheduleOnce:@selector(delayToDelete) delay:0.3];
}

延迟删除代码是

-(void)delayToDelete
{
 for (CCSprite *target in targetsToRemove) { //it will crash at this line, when I run
    if (target.tag == 1) {
        CCLOG(@"do something");

    }
    else {
        CCLOG(@"do nothing");
    }
 }
}

如果我不使用'[self scheduleOnce：@selector（delayToDelete）delay：0.3];'，只需使用[self delayToDelete]，它会运行良好，那么这段代码有什么问题？感谢

Answer 1

将target添加到targetsToRemove后，_target中对象的引用将添加到targetsToRemove。因此，当_target被解除分配时，您添加的对象targetsToRemove

尝试[targetsToRemove addObject:[target Copy]];

如果有效，那么_target将被取消分配。