Dynamically Add and Remove Views in Android including dialog form and retrieve data

dialogfield.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:fancy="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
    android:orientation="vertical">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorPrimary"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:popupTheme="@style/AppTheme.PopupOverlay">

            <mehdi.sakout.fancybuttons.FancyButton
                android:id="@+id/btn_back"
                android:visibility="gone"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:layout_alignParentLeft="true"
                android:paddingLeft="0dp"
                android:paddingTop="10dp"
                android:paddingRight="10dp"
                android:paddingBottom="10dp"
                fancy:fb_borderColor="@color/transparent"
                fancy:fb_borderWidth="1dp"
                fancy:fb_defaultColor="@color/transparent"
                fancy:fb_focusColor="@color/transparent"
                fancy:fb_fontIconResource="&#xf060;"
                fancy:fb_fontIconSize="18sp"
                fancy:fb_iconPosition="left"
                fancy:fb_text=""
                fancy:fb_textColor="@color/white" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="SURVEY"
                android:textColor="@color/white"
                android:textSize="22sp"
                android:textAlignment="center"
                android:layout_centerHorizontal="true"
                android:layout_gravity="center"
                android:textStyle="normal" />
            <ImageView
                android:visibility="gone"
                android:layout_width="200dp"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_gravity="center"
                android:layout_marginRight="0dp"
                android:paddingTop="10dp"
                android:paddingBottom="10dp"
                android:src="@drawable/logo" />
        </android.support.v7.widget.Toolbar>
    </android.support.design.widget.AppBarLayout>

    <ScrollView
        android:layout_below="@id/appbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="10dp">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="0dp"
                android:layout_marginBottom="5dp"
                android:orientation="vertical">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="10dp"
                    android:text="Identifikasi Responden" />

                <android.support.design.widget.TextInputLayout
                    android:id="@+id/input_layout_responden"
                    style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="5dp"
                    android:layout_marginRight="5dp"
                    android:paddingBottom="5dp"
                    android:visibility="visible"
                    app:hintTextAppearance="@style/TextLabel">

                    <EditText
                        android:id="@+id/et_responden"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:hint="Masukkan Nama Responden"
                        android:inputType="textEmailAddress"
                        android:singleLine="true"
                        android:textColor="@color/textColor" />
                </android.support.design.widget.TextInputLayout>
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="0dp"
                android:layout_marginBottom="5dp"
                android:orientation="vertical">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="10dp"
                    android:text="Identifikasi Usia" />

                <android.support.design.widget.TextInputLayout
                    android:id="@+id/input_layout_usia"
                    style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="5dp"
                    android:layout_marginRight="5dp"
                    android:paddingBottom="5dp"
                    android:visibility="visible"
                    app:hintTextAppearance="@style/TextLabel">

                    <EditText
                        android:id="@+id/et_usia"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:hint="Masukkan Usia"
                        android:inputType="textEmailAddress"
                        android:singleLine="true"
                        android:textColor="@color/textColor" />
                </android.support.design.widget.TextInputLayout>
            </LinearLayout>

        </LinearLayout>
    </ScrollView>
    <mehdi.sakout.fancybuttons.FancyButton
        android:id="@+id/btn_continue"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:paddingLeft="20dp"
        android:paddingTop="10dp"
        android:paddingRight="20dp"
        android:paddingBottom="10dp"
        fancy:fb_borderColor="@color/white"
        fancy:fb_borderWidth="0dp"
        fancy:fb_defaultColor="@color/colorPrimary"
        fancy:fb_focusColor="@color/colorPrimaryDark"
        fancy:fb_iconPosition="left"
        fancy:fb_radius="0dp"
        fancy:fb_text="Selanjutnya"
        fancy:fb_textColor="@color/white" />
</RelativeLayout>

dinamicFieldActivity.java

public class dinamicFieldActivity extends AppCompatActivity {
    Activity activity;
    private LinearLayout parentLinearLayout;
    String res;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.parent_dinamic_field);
        activity = this;
        parentLinearLayout = (LinearLayout) findViewById(R.id.parent_linear_layout);
        Button btnSimpan = findViewById(R.id.btnSimpan);
        btnSimpan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int count = parentLinearLayout.getChildCount() - 1;
                for (int i = 0; i < count; i++) {

                    final View row = parentLinearLayout.getChildAt(i);
                    TextView editTextResult = (TextView) row.findViewById(R.id.strValue);
                    String result = editTextResult.getText().toString();
                    Utilities.ShowLog("result field", result);
                }
            }
        });
    }

    public void onAddField(View v) {
        LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        final View rowView = inflater.inflate(R.layout.field, null);
        // Add the new row before the add field button.
        parentLinearLayout.addView(rowView, parentLinearLayout.getChildCount() - 1);
    }

    public void onDelete(View v) {
        parentLinearLayout.removeView((View) v.getParent());
    }

    public void Popup(View v) {
        Init(activity, (View) v.getParent());

    }


    // TODO: POPUP INPUT
    public void Init(Context context, final View view) {
        Context _context = context;
        final Dialog _dialog = new Dialog(_context);
        _dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        _dialog.setContentView(R.layout.dialogfield);

        FancyButton button = (FancyButton) _dialog.findViewById(R.id.btn_continue);
        final EditText etResponden = (EditText) _dialog.findViewById(R.id.et_responden);
        final EditText etUsia = (EditText) _dialog.findViewById(R.id.et_usia);

        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                try {
                    JSONObject jObj = new JSONObject().put("nama", etResponden.getText().toString()).put("usia", etUsia.getText().toString());
                    String nama = jObj.optString("nama");
                    res = jObj.toString();

                    TextView resultJson = view.findViewById(R.id.strValue);
                    resultJson.setText(jObj.toString());

                    TextView label = view.findViewById(R.id.label);
                    label.setText(etResponden.getText().toString());
                } catch (JSONException e) {
                    e.printStackTrace();
                }

                _dialog.hide();

            }
        });

        _dialog.show();
        _dialog.setCancelable(true);

    }
}

field.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:fancy="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:orientation="horizontal" >
    <TextView
        android:id="@+id/strValue"
        android:visibility="gone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <TextView
        android:id="@+id/label"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="5"
        android:onClick="Popup"
        android:textSize="22sp"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:gravity="center_vertical"
        android:editable="false"
        android:clickable="true"
        android:inputType="text"/>


    <mehdi.sakout.fancybuttons.FancyButton
        android:id="@+id/delete_button"
        android:onClick="onDelete"
        android:layout_width="0dp"
        android:layout_height="40dp"
        android:layout_weight="1"
        android:layout_gravity="center"
        android:paddingLeft="0dp"
        android:paddingTop="0dp"
        android:paddingRight="0dp"
        android:paddingBottom="0dp"
        fancy:fb_borderColor="@color/white"
        fancy:fb_borderWidth="0dp"
        fancy:fb_defaultColor="@color/transparent"
        fancy:fb_focusColor="@color/transparent"
        fancy:fb_fontIconResource="&#xf058;"
        fancy:fb_iconPosition="left"
        fancy:fb_radius="0dp"
        fancy:fb_text=""
        fancy:fb_textColor="@color/delete" />
</LinearLayout>

parent_dinamic_field.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:fancy="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="0dp">

    <Button
        android:id="@+id/btnSimpan"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Simpan"
        android:layout_alignParentBottom="true"/>

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:fancy="http://schemas.android.com/apk/res-auto"
        android:id="@+id/parent_linear_layout"
        android:layout_above="@id/btnSimpan"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="5dp"
        android:orientation="vertical">

        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/strValue"
                android:visibility="gone"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
            <TextView
                android:id="@+id/label"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="5"
                android:onClick="Popup"
                android:textSize="22sp"
                android:paddingLeft="10dp"
                android:paddingRight="10dp"
                android:gravity="center_vertical"
                android:editable="false"
                android:clickable="true"
                android:inputType="text"/>


            <mehdi.sakout.fancybuttons.FancyButton
                android:id="@+id/delete_button"
                android:onClick="onDelete"
                android:layout_width="0dp"
                android:layout_height="40dp"
                android:layout_weight="1"
                android:layout_gravity="center"
                android:paddingLeft="0dp"
                android:paddingTop="0dp"
                android:paddingRight="0dp"
                android:paddingBottom="0dp"
                fancy:fb_borderColor="@color/white"
                fancy:fb_borderWidth="0dp"
                fancy:fb_defaultColor="@color/transparent"
                fancy:fb_focusColor="@color/transparent"
                fancy:fb_fontIconResource="&#xf058;"
                fancy:fb_iconPosition="left"
                fancy:fb_radius="0dp"
                fancy:fb_text=""
                fancy:fb_textColor="@color/delete" />
        </LinearLayout>

        <Button
            android:id="@+id/add_field_button"
            android:layout_width="100dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:layout_marginBottom="5dp"
            android:background="#555"
            android:onClick="onAddField"
            android:paddingLeft="5dp"
            android:text="Add Field"
            android:textColor="#FFF" />
    </LinearLayout>
</RelativeLayout>