查看越来越膨胀每次在getView。 findViewById（...）做了很多次。我已经使用视图持有人 [英] View is getting inflated everytime in getView. findViewById(...) is done many times. I have used View Holder

问题描述

public View getView(final int pos, View arg1, ViewGroup arg2) {

    ViewHolder holder;
    View view = arg1;

    if (arg1 == null) {
        holder = new ViewHolder();
        System.out.println("Inflating view");
        arg1 = mInflater.inflate(R.layout.inflatefreedownlod, arg2, false);
        holder.im = (ImageView) arg1.findViewById(R.id.imf1);
        holder.tv1 = (TextView) arg1.findViewById(R.id.tvf1);
        holder.tv2 = (TextView) arg1.findViewById(R.id.mini1);
        holder.tv3 = (TextView) arg1.findViewById(R.id.m1);
        arg1.setTag(holder);

    } else {

        holder = (ViewHolder) arg1.getTag();
    }

    holder.tv1.setText(NAME.get(pos).toString());
    holder.tv2.setText(contentName.get(pos).toString());
    holder.tv3.setText(minidescp.get(pos).toString());
    URL url1;

    try {

        url1 = new URL(imurl.get(pos).toString());
        bmp = BitmapFactory.decodeStream(url1.openConnection().getInputStream());
        holder.im.setImageBitmap(bmp);
        //bmp.recycle();

    } catch (Exception e) {
        e.printStackTrace();
    }

    arg1.setOnClickListener(new OnClickListener() {

                            @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            for (int i = 0; i < NAME.size(); i++)
                if (pos == i) {
                    getFreeContent(Cid.get(pos).toString(), Vid.get(pos).toString(), contentName.get(pos).toString());
                }

        }

    });

    return arg1;
}

我看这显示了充气查看3次logcat的。我有3个的LinearLayout显示在列表视图，当我进行测试的模拟器。为什么我认为空每次？查看也在每一次膨胀。什么毛病我的code

I see the logcat which shows Inflating View 3 times. I have 3 LinearLayout displayed in listview when i test it on emulator. Why is my view null everytime?. View also is inflated every time. Anything wrong with my code

推荐答案

如果您有三个项目在列表中，并且有空间在屏幕上三行的的ListView ， getView（）将被调用三次以空 查看来创建这些三行。你不能再利用的行为presently使用。

If you have three items in your list, and there is space on the screen for three rows in your ListView, getView() will be called three times with a null View to create those three rows. You cannot recycle a row that is presently in use.

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