android ListView 报错 The specified child already has a parent

最新推荐文章于 2024-03-17 14:01:35 发布

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#android #listview #The specified child

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本文解决了在ListView中因重复添加视图导致的'Thespecifiedchildalreadyhasaparent'错误。通过改进convertView的管理和利用，确保了每个子项只被添加一次。

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今天遇到一个问题，在listviev中加入传进来的布局，上下滑动时，报错The specified child already has a parent。

先贴原始代码：

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {

			convertView = layoutInflater.inflate(R.layout.check_laizi_item_ll, null);
			RelativeLayout mRelativeLayout = (RelativeLayout) convertView.findViewById(R.id.clil_rl);
			List<Poker> poker = mPokers.get(position);
			for (int j = 0; j < poker.size(); j++) {
				Poker card = poker.get(j);
				if (card.isLaiZi()) {
					card.getPokeImage().setImageDrawable(ImageUtil.getResDrawable(card.getBitpamResLaiZiID(), true));
				} else {
					card.getPokeImage().setImageDrawable(ImageUtil.getResDrawable(card.getBitpamResID(), true));
				}
				card.setId(position + 100);
				RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(mst.adjustXIgnoreDensity(45), mst.adjustYIgnoreDensity(61));
				params.topMargin = mst.adjustYIgnoreDensity(card_jiange);
				params.leftMargin = mst.adjustXIgnoreDensity(card_jiange * j);
				card.getInnerLayout().setBackgroundDrawable(ImageUtil.getResDrawable(R.drawable.poker_div, true));
				card.getInnerLayout().setVisibility(View.GONE);
				card.setClickable(false);
				card.setLayoutParams(params);
				mRelativeLayout.addView(card);
			}

			return convertView;
		}

再贴图片：

原因是listview中我的Poker控件被多个convertView引用。

之前以为是我的convertView框架被复用的原因，因此我不对convertView进行服用，每次都创建一个convertView,可是也会报这个错误。

我想问题应该在position上，具体神马情况不是我也不好解释，只是感觉position与convertView的变动没有及时同步吧

那我就把convertView用数组保存起来，然后根据position去取，这样是他们同步

再贴修改后代码：

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {

			if(null==convertViews[position]){
				convertView = layoutInflater.inflate(R.layout.check_laizi_item_ll, null);
				RelativeLayout mRelativeLayout = (RelativeLayout) convertView.findViewById(R.id.clil_rl);
				List<Poker> poker = mPokers.get(position);
				for (int j = 0; j < poker.size(); j++) {
					Poker card = poker.get(j);
					if (card.isLaiZi()) {
						card.getPokeImage().setImageDrawable(ImageUtil.getResDrawable(card.getBitpamResLaiZiID(), true));
					} else {
						card.getPokeImage().setImageDrawable(ImageUtil.getResDrawable(card.getBitpamResID(), true));
					}
					card.setId(position + 100);
					RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(mst.adjustXIgnoreDensity(45), mst.adjustYIgnoreDensity(61));
					params.topMargin = mst.adjustYIgnoreDensity(card_jiange);
					params.leftMargin = mst.adjustXIgnoreDensity(card_jiange * j);
					card.getInnerLayout().setBackgroundDrawable(ImageUtil.getResDrawable(R.drawable.poker_div, true));
					card.getInnerLayout().setVisibility(View.GONE);
					card.setClickable(false);
					card.setLayoutParams(params);
					mRelativeLayout.addView(card);
					convertViews[position]=convertView;
				}
			}else{
				convertView=convertViews[position];
			}
			Log.i("positionss", "position:"+position+"       mPokers.size:"+mPokers.size()+"      convertViews[position]:"+convertViews[position]);
			return convertView;
		}