Listview in android did not refresh the view until dragged

Question

I am using the code below:

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



but the weird thing is, after the list populates, the only item available is the first thing on the list the rows directly below would be empty unless I drag down out of view then back again then it'd show. I'm pretty sure the code above is right as I followed a tutorial. But, I cant expect the user to drag down and back again to see the things involved... 

And to add, I just noticed that my datas are not populated properly as this warning would appear 07-19 23:54:49.947: WARN/InputManagerService(58): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44eb97c0
 and I'm quite sure that my codes are correct and the following is where it stops:

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;
}


and from the LogCat trace I would only get to position 3 :( what could be the problem?
someone please help me...

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());

}


this is called from the asyncatask in the function doInBackground()

user_3725501 · Answer

Same as @ac19 's answer, problem was sloved by adding handler-message.

I use custom adapter and typical ListView, will update data if I get bluetooth callback. When I called "Adapter.notifyDataSetChanged()" in callback function, List didn't updated until I touched screen.

I defiend a message and add following code in callback function (replaced Adapter.notifyDataSetChanged())

Message m = new Message();
m.what = MessageYouDefined;
mHandler.sendMessage(m);

And added handler in onCreate

mHandler=new Handler(){
    public void handleMessage(Message msg)
    {
        switch (msg.what){
             case UpdateChargerList:
             chargerAdapter.notifyDataSetChanged();
             break;
         }
         super.handleMessage(msg);
    }
};

Listview in android did not refresh the view until dragged

9 Answers