TableLayout not being displayed when added dynamically

Question

I'm trying to parse an XML and display its contents in table layout. I'm adding rows and columns dynamically, when execute instead of displaying table, it shows a blank screen.

This is my xml file.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".CaptureActivity" >

<ScrollView
android:id="@+id/ScrollView_maintable"
android:layout_width="match_parent"
android:layout_height="400dp" >

<TableLayout
    android:id="@+id/main_table"
    android:layout_width="match_parent"
    android:layout_height="400dp"
    android:layout_weight="1" >

 </TableLayout>

This is my activity class.

public class CaptureActivity extends Activity {

private String url = "http://192.168.3.140:8080/EmployeeXmlDemo/EmployeeList.xml";
//private String url = "http://192.168.2.166:8780/capture/clientRequest.do?r=employeeList&cid=0";

FetchEmployeeAsyncTask employeeAsyncTask = new FetchEmployeeAsyncTask(this);

private ArrayList<Employee> employees = null;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    employeeAsyncTask.execute(new String[] {url});

    System.out.println("Status "+employeeAsyncTask.getStatus());

    setContentView(R.layout.activity_capture);


}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_capture, menu);
    return true;
}



public void showEmployees(ArrayList<Employee> employees) {
    // TODO Auto-generated method stub
    System.out.println("size is "+employees.size());

    TableLayout employeeTable = (TableLayout) findViewById(R.id.main_table);

    TableRow header = new TableRow(this);
    header.setId(100);
    //header.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

    TextView empCodeHeader = new TextView(this);
    empCodeHeader.setId(200);
    empCodeHeader.setText("Employee Code");
    empCodeHeader.setTextSize(16);
    empCodeHeader.setPadding(2,2,2,2);
    empCodeHeader.setWidth(200);
    header.addView(empCodeHeader);

    TextView empNameHeader = new TextView(this);
    empNameHeader.setId(201);
    empNameHeader.setText("Employee Name");
    empNameHeader.setTextSize(16);
    empNameHeader.setPadding(2,2,2,2);
    empNameHeader.setWidth(300);
    header.addView(empNameHeader);

    employeeTable.addView(header);//, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));



    for(int i=0; i<employees.size();i++){

        Employee employee = (Employee) employees.get(i);

        int count = 0;

        TableRow empData = new TableRow(this);
        empData.setId(300+count);
        /*empData.setLayoutParams(new LayoutParams(
                LayoutParams.MATCH_PARENT,
                LayoutParams.MATCH_PARENT ));*/
        //tr.setClickable(true);

        final TextView empCode = new TextView(this);
        empCode.setId(300+count);
        empCode.setText(employee.getCode());
        empCode.setTextSize(16);
        empCode.setPadding(2,2, 2, 2);
        empData.addView(empCode);

        final TextView empName = new TextView(this);
        empName.setId(300+count);
        empName.setText(employee.getName());
        empName.setTextSize(16);
        empName.setPadding(2, 2, 2, 2);
        empData.addView(empName);

        employeeTable.addView(empData); /*, new TableLayout.LayoutParams(
                LayoutParams.MATCH_PARENT,
                LayoutParams.MATCH_PARENT));*/
       count++;

        System.out.println("Name "+employee.getName());
        System.out.println("Designatio "+employee.getDesignation());


    }
    setContentView(R.layout.activity_capture);

}



/**
 * @return the employees
 */
public ArrayList<Employee> getEmployees() {
    return employees;
}

/**
 * @param employees the employees to set
 */
public void setEmployees(ArrayList<Employee> employees) {
    this.employees = employees;
}

}

This is my AsyncTask class.

public class FetchEmployeeAsyncTask extends AsyncTask<String, Void, ArrayList<Employee> >   {

private CaptureActivity activity;

public FetchEmployeeAsyncTask(CaptureActivity nextActivity) {
    this.activity = nextActivity;
}

@Override
protected ArrayList<Employee> doInBackground(String... url) {
    // TODO Auto-generated methoVoidd stub
    ArrayList<Employee> employees = null;
    for(String employeeUrl : url){
        employees = fetch(employeeUrl);
    }
    return employees;
}

private ArrayList<Employee> fetch(String url) {
    // TODO Auto-generated method stub
    ArrayList<Employee> employees = null;
    String response = null;
    try {
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(url);

        HttpResponse httpResponse = httpClient.execute(httpGet);
        HttpEntity httpEntity = httpResponse.getEntity();
        response = EntityUtils.toString(httpEntity);
        employees = EmployeeXMLParser.XMLfromString(response);
        System.out.println("Size in fetch "+employees.size());

        //System.out.println("Employee Name :: " + employees.get(0).getFirstName() + " " + employees.get(0).getLastName());
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } /*catch (XmlPullParserException e) {
        // TODO Auto-generated catch block
        System.out.println("Error parsing the response :: " + response);
        e.printStackTrace();
    }*/
    return employees;
}

@Override
protected void onPreExecute() {
    // TODO Auto-generated method stub
    super.onPreExecute();
}

@Override
public void onPostExecute(ArrayList<Employee> employees){
    super.onPostExecute(employees);

    System.out.println("in post execxute "+employees.size());
    activity.showEmployees(employees);
    //activity.setContentView(R.layout.activity_capture);

}


}

Answer 1

 setContentView(R.layout.activity_capture)

remove that in showEmployee()