android中的Listview直到拖动才刷新视图

Question

我使用下面的代码:

private Runnable returnRes = new Runnable() {

        @Override
        public void run() {
            if(m_orders != null && m_orders.size() > 0){
                m_adapter.notifyDataSetChanged();
                for(int i=0;i<m_orders.size();i++)
                m_adapter.add(m_orders.get(i));
            }
            m_ProgressDialog.dismiss();
            m_adapter.notifyDataSetChanged();
        }
      };

但奇怪的是,在列表填充之后,唯一可用的项目是列表中的第一件事,直接在下面的行将是空的,除非我向下拖出视图然后再返回然后它显示.我非常确定上面的代码是正确的,因为我遵循了一个教程.但是,我不能指望用户再次向下拖动以查看所涉及的内容......

另外,我只是注意到我的数据没有正确填充,因为这个警告会出现07-19 23:54:49.947: WARN/InputManagerService(58): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44eb97c0 ,我很确定我的代码是正确的,以下是它停止的地方:

public View getView(int position, View convertView, ViewGroup parent){
    View v = convertView;
    if(v != null){
        return v;
    }
    LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    v = vi.inflate(R.layout.row, null);

    Log.d("added", "g" + position);
    Grade g = grades.get(position);
    if(g != null){
        TextView name = (TextView) findViewById(R.id.bottomtext);
        TextView id = (TextView) findViewById(R.id.toptext);
        if(name != null)
            name.setText(g.getName());
        if(id != null)
            id.setText(g.getId());
        Log.d("grade", "grade " + g.toString());

    }

    return v;
}

从LogCat跟踪我只能到达位置3 :(可能是什么问题？有人请帮帮我...

LoginByHttpPost gradeIndex = new LoginByHttpPost();
    HttpURLConnection gradePage = gradeIndex.doHttpGet(TARGETURL);
    String gradeInd = gradeIndex.readResponse(gradePage);

    Document doc = Jsoup.parse(gradeInd);
    // do more things here


    Log.d("grade now ", grades.get(0).text());
    Log.d("gradef now ", gradesF.text());

    for(int i = 0; i < grades.size(); i += 5){
        Grade grade = new Grade();
        grade.setId(grades.get(i).text());
        grade.setName(grades.get(i + 1).text());
        //gradeList.add(grade);
        ga.add(grade);    //this is my arrayadapter not sure where to add my object to through :(

    }

    for(int i = 0; i < gradesF.size(); i++){
        gradeList.get(i).setGrade(gradesF.get(i).text());
    }



} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    Log.d("prob", e.getMessage());

}

这是从函数doInBackground()中的asyncatask调用的

Answer 1

尝试在列表视图上调用ListView.invalidateViews().为我工作.

即使从适配器上的UI线程调用notifyDataSetChanged()和/或notifyDataSetInvalidated(),这些也只会使数据无效,而不会使视图无效.因此.

Answer 2

你应该notifyDataSetChanged()在UI线程中调用try尝试runOnUiThread().第二件事是notifyDataSetChanged()应该在添加,删除和清除功能之后调用.