onResponse

public void onResponse(Call<PhotoItemCollectionDao> call, Response<PhotoItemCollectionDao> response) {
                if(response.isSuccessful()){
                    PhotoItemCollectionDao dao = response.body();
                    secondFragment.setDao(dao.getData());
                    layout = (LinearLayout) rootView.findViewById(R.id.index);
                    int childs = 0;
                    int temp=0;
                    int temp2=0;
                    LinearLayout a = new LinearLayout(getContext());
                    a.setOrientation(LinearLayout.HORIZONTAL);
                    int count=0;
                    for(int i=0; i<dao.getData().size();i++){
                        temp2=i;
                        if(count%2==0) {
                            a = new LinearLayout(getContext());
                            a.setOrientation(LinearLayout.HORIZONTAL);
                        }
                        if(dao.getData().get(i).getParent().equals("")) {
                            childs = 0;
                            while (true) {

                                if ((dao.getData().get(i).getNode() + "").equals(dao.getData().get(childs).getpNode()) || dao.getData().get(i).getStep() != null) {
                                    childs = 1000;
                                    break;
                                }
                                else if(childs == dao.getData().size() - 1) {
                                    childs = -1000;
                                    break;
                                }
                                childs++;
                            }
                                count += 1;
                                if (temp == 0) {
                                    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(300, 100);
                                    lp.weight = 3;
                                    View view = new View(getContext());
                                    a.addView(view, lp);
                                    lp = new LinearLayout.LayoutParams(
                                            LinearLayout.LayoutParams.WRAP_CONTENT,
                                            LinearLayout.LayoutParams.WRAP_CONTENT);
                                    lp.weight = 3;
                                    Button button = new Button(getContext());
                                    if(childs==1000){
                                        button.setTag("normal");
                                    }
                                    else if(childs==-1000){
                                        button.setTag("unNormal");
                                    }
                                    button.setText(dao.getData().get(i).getAlbumnName());
                                    button.setBackgroundResource(R.drawable.button_grid2);
                                    button.setTextColor(Color.BLACK);
                                    button.setTextSize(20);
                                    button.setOnClickListener(clickListener);
                                    a.addView(button, lp);
                                    temp = 1;
                                } else {
                                    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
                                            LinearLayout.LayoutParams.WRAP_CONTENT,
                                            LinearLayout.LayoutParams.WRAP_CONTENT);
                                    lp.weight = 3;

                                    Button button = new Button(getContext());
                                    if(childs==1000){
                                        button.setTag("normal");
                                    }
                                    else if(childs==-1000){
                                        button.setTag("unNormal");
                                    }
                                    button.setText(dao.getData().get(i).getAlbumnName());
                                    button.setBackgroundResource(R.drawable.button_grid2);
                                    button.setTextSize(20);
                                    button.setTextColor(Color.BLACK);
                                    button.setOnClickListener(clickListener);
                                    a.addView(button, lp);
                                    layout.addView(a);
                                    temp = 0;
                                }
                                childs = 0;

                        }
                    }if(temp==1){
                        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
                                LinearLayout.LayoutParams.WRAP_CONTENT,
                                LinearLayout.LayoutParams.WRAP_CONTENT);
                        lp.setMargins(0,0,0,0);
                        lp.weight = 3;
                        Button button = new Button(getContext());
                        button.setText("");
                        button.setBackgroundResource(R.drawable.button_grid2);
                        button.setTextColor(Color.BLACK);
                        button.setTextSize(20);
                        button.setOnClickListener(clickListener);
                        button.setVisibility(View.INVISIBLE);
                        a.addView(button,lp);
                        lp = new LinearLayout.LayoutParams(
                                LinearLayout.LayoutParams.WRAP_CONTENT,
                                LinearLayout.LayoutParams.WRAP_CONTENT);
                        lp.setMargins(0,0,0,0);
                        layout.addView(a, lp);
                    }

                }else{
                    //handle
                    try {
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }