How to use addView in loop to make a rows in table layout

Question

I want to make a table that have to call my data from my database using JSON and volley, so i need to loop it. In my loop i have a few textview and i use addView to add it to the row.The addView was works well if i only have one row data in my database but it will get an error if i have more then one. The error is

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

So, i think its get an error because the loop was call a same addView.

Sorry, I'm not too fluent in English :)

Here is my code:

public class DaftarNilaiUtama3 extends AppCompatActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_daftar_nilai_utama3);

        final  TableLayout tableview = (TableLayout) findViewById(R.id.tableview);

        final TableRow row = new TableRow(this);

        final TextView tvModul = new TextView(this);
        final TextView tvRes = new TextView(this);
        final TextView tvPost = new TextView(this);


        TableLayout.LayoutParams lp = new TableLayout.LayoutParams(
                TableLayout.LayoutParams.MATCH_PARENT,
                TableLayout.LayoutParams.WRAP_CONTENT);
        lp.setMargins(5,5,0,5);


        row.setLayoutParams(lp);

        Response.Listener responseListener= new Response.Listener<String>() {

            @Override
            public void onResponse(String response) {

                try {
                    List<String> item = new ArrayList<String>();
                    JSONArray jsonMainNode = new JSONArray(response);
                    JSONObject jsonResponse = new JSONObject();

                    for (int i = 0; i < jsonMainNode.length(); i++) {

                        jsonResponse = jsonMainNode.getJSONObject(i);

                        String nama_modul = jsonResponse.optString("nama_modul");
                        String responsi_nilai = jsonResponse.optString("responsi_nilai");
                        String posttest_nilai = jsonResponse.optString("posttest_nilai");


                        tvModul.setGravity(Gravity.CENTER);
                        tvModul.setTextSize(12.0f);
                        tvModul.setBackgroundColor(Color.parseColor("#eeeeee"));
                        tvModul.setTypeface(null, Typeface.BOLD);
                        tvModul.setText(nama_modul);
                        row.addView(tvModul);


                        tvRes.setGravity(Gravity.CENTER);
                        tvRes.setTextSize(12.0f);
                        tvRes.setBackgroundColor(Color.parseColor("#eeeeee"));
                        tvRes.setTypeface(null, Typeface.BOLD);
                        tvRes.setText(responsi_nilai);
                        row.addView(tvRes);

                        tvPost.setGravity(Gravity.CENTER);
                        tvPost.setTextSize(12.0f);
                        tvPost.setBackgroundColor(Color.parseColor("#eeeeee"));
                        tvPost.setTypeface(null, Typeface.BOLD);
                        tvPost.setText(posttest_nilai);
                        row.addView(tvPost);


                        tableview.addView(row);
                    }




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

        RequestTableDNU3 lvReq = new RequestTableDNU3(nama_klp,nama_mhs, responseListener);
        RequestQueue queue = Volley.newRequestQueue(DaftarNilaiUtama3.this);
        queue.add(lvReq);




    }



}

Answer 1

Try this..You have to create table row for each iteration in loop and then have to add to table layout. add context as DaftarNilaiUtama3.this

for (int i = 0; i < jsonMainNode.length(); i++) {
                    final TableRow row = new TableRow(DaftarNilaiUtama3 .this);
                    jsonResponse = jsonMainNode.getJSONObject(i);

                    String nama_modul = jsonResponse.optString("nama_modul");
                    String responsi_nilai = jsonResponse.optString("responsi_nilai");
                    String posttest_nilai = jsonResponse.optString("posttest_nilai");


                    tvModul.setGravity(Gravity.CENTER);
                    tvModul.setTextSize(12.0f);
                    tvModul.setBackgroundColor(Color.parseColor("#eeeeee"));
                    tvModul.setTypeface(null, Typeface.BOLD);
                    tvModul.setText(nama_modul);
                    row.addView(tvModul);


                    tvRes.setGravity(Gravity.CENTER);
                    tvRes.setTextSize(12.0f);
                    tvRes.setBackgroundColor(Color.parseColor("#eeeeee"));
                    tvRes.setTypeface(null, Typeface.BOLD);
                    tvRes.setText(responsi_nilai);
                    row.addView(tvRes);

                    tvPost.setGravity(Gravity.CENTER);
                    tvPost.setTextSize(12.0f);
                    tvPost.setBackgroundColor(Color.parseColor("#eeeeee"));
                    tvPost.setTypeface(null, Typeface.BOLD);
                    tvPost.setText(posttest_nilai);
                    row.addView(tvPost);


                    tableview.addView(row);
                }