如何获取列表行项目（TextView的）身份证件和文字的ListView onScroll在android系统？ [英] How to get list row item(textview) id and text in onScroll of Listview in android?

问题描述

我在使用基本适配器来创建自定义列表视图。有列表视图的每行中一个的ImageView和TextView中。我想要做的是，当我的列表视图滚动我想要得到的TextView的列表视图中的firstvisible行的文本，然后我想使TextView的无形的ListView firstvisible行。我怎样才能得到Id和数据列表视图的onScroll方法的看法。

  @覆盖
        公共查看getView（INT为arg0，查看convertView，ViewGroup中ARG2）{
            // TODO自动生成方法存根            convertView = LayoutInflater.from（MainActivity.this）.inflate（R.layout.list_row，ARG2，FALSE）;
            TextView的电视=（TextView中）convertView.findViewById（R.id.textViewrow）;
            tv.setText（位置+ arg0中）;
            = TV_ITEM电视;
// tv.setTag（位置+ arg0中）;
            返回convertView;
        }@覆盖
            公共无效onScroll（AbsListView观点，诠释firstVisibleItem，诠释visibleItemCount，诠释totalItemCount）{
                // TODO自动生成方法存根
// ViewGroup中的ViewGroup =（ViewGroup中）view.getAdapter（）
// .getView（firstVisibleRow，空，查看）; //
                INT后= lv.getFirstVisiblePosition（）;
                TextView的电视=（TextView中）lv.findViewWithTag（位置+后）;
                的System.out.println（位置+后）;
//视图V = lv.findViewWithTag（位置+后）;
// v.findViewById（R.id.textViewrow）.gett
//的System.out.println（位置文本+ tv.getText（））;                /*tv_item.getHitRect(rect2）;
                如果（Rect.intersects（Rect1的，RECT2））{
                    Toast.makeText（getApplicationContext（），相交，Toast.LENGTH_LONG）.show（）;
                } * /            }
 

解决方案

我想这问题与<一个连接href=\"http://stackoverflow.com/questions/23782773/how-to-add-sticky-header-in-listview-with-background-image-on-list-row-in-androi/24224737#\">this ：）

要解决你的问题我搜索了一点，我发现<一个href=\"http://stackoverflow.com/questions/18463101/get-listview-children-that-are-not-in-view\">this

现在解决您的问题，你必须遵循以下步骤：

您必须让你这样的一个可见行的观点：

  ....
    @覆盖
    公共无效onScroll（AbsListView观点，诠释firstVisibleItem，诠释visibleItemCount，诠释totalItemCount）{        查看查看= mListView.getAdapter（）getView（firstVisibleItem，空，mListView）。
        TextView的mTextView =（TextView中）view.findViewById（R.id.textViewrow）;
        mTextView.setVisbility（View.GONE）;
 

我希望它可以帮助你，

I have used base adapter in to create a custom listview. There is an ImageView and TextView in each row of listview. What I want to do is that when I scroll listview I want to get the text of textview in firstvisible row of listview and then I want to make the textview invisible of firstvisible row of listview. How can I get Id and data of a view in onScroll method of listview.

@Override
        public View getView(int arg0, View convertView, ViewGroup arg2) {
            // TODO Auto-generated method stub

            convertView = LayoutInflater.from(MainActivity.this).inflate(R.layout.list_row, arg2, false);
            TextView tv = (TextView)convertView.findViewById(R.id.textViewrow);
            tv.setText("position " + arg0);
            tv_item = tv;
//          tv.setTag("position " + arg0);




            return convertView;
        }





@Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                // TODO Auto-generated method stub
//              ViewGroup viewGroup = (ViewGroup) view.getAdapter()
//                        .getView(firstVisibleRow, null, view);//
                int post = lv.getFirstVisiblePosition();
                TextView tv = (TextView)lv.findViewWithTag("position " + post);
                System.out.println("position " + post);
//              View v= lv.findViewWithTag("position " + post);
//              v.findViewById(R.id.textViewrow).gett
//              System.out.println("position text" + tv.getText());



                /*tv_item.getHitRect(rect2);
                if (Rect.intersects(rect1, rect2)) {
                    Toast.makeText(getApplicationContext(), "intersected", Toast.LENGTH_LONG).show();
                }*/

            }

解决方案

I guess this problem is connected with this :)

To resolve your problem I searched a little and I found this

Now to fix your problem you have to follow these steps:

You have to get the View of your first visible row like this:

    ....
    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

        View view = mListView.getAdapter().getView(firstVisibleItem, null, mListView);
        TextView mTextView = (TextView) view.findViewById(R.id.textViewrow);
        mTextView.setVisbility(View.GONE);

I hope it helps you,

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