Ytukyg

I have a fragment where I would like to implement a dynamic list such that there is a button that you can press to add fields in the list.

I found some code to do just this (also shown below)

Dynamically add elements to a listView Android

I am trying to implement this inside my fragment but have been unsuccessful. A solution would be highly appreciated.

THE CODE I FOUND TO MAKE A DYNAMIC LIST

import java.util.ArrayList;

import java.util.List;

import android.app.ListActivity;

import android.widget.ArrayAdapter;

import android.os.Bundle;

import android.view.View;



public class OrdersDynamicList extends ListActivity {

    //LIST OF ARRAY STRINGS WHICH WILL SERVE AS LIST ITEMS

    ArrayList<String> listItems=new ArrayList<String>();



    //DEFINING A STRING ADAPTER WHICH WILL HANDLE THE DATA OF THE LISTVIEW

    ArrayAdapter<String> adapter;



    //RECORDING HOW MANY TIMES THE BUTTON HAS BEEN CLICKED

    int clickCounter=0;



    @Override

    public void onCreate(Bundle icicle) {

        super.onCreate(icicle);

        setContentView(R.layout.activity_server);

        adapter=new ArrayAdapter<String>(this,

                android.R.layout.simple_list_item_1,

                listItems);

        setListAdapter(adapter);

    }



    //METHOD WHICH WILL HANDLE DYNAMIC INSERTION

    public void addItems(View v) {

        listItems.add("Clicked : "+clickCounter++);

        adapter.notifyDataSetChanged();

    }

}

MY FRAGMENT

import android.content.Context;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;





public class FragmentNewTable extends Fragment {

    private FragmentNewTableListener listener;

    private OrdersDynamicList ordersDynamicList;



    public interface FragmentNewTableListener {

        void onInputFragmentNewTableSent(CharSequence input);

    }





    @Nullable

    @Override

    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View v = inflater.inflate(R.layout.fragment_new_table, container, false);



        return v;

    }



    public void updateEditText(CharSequence newText) {

        //editText.setText(newText);

    }



    @Override

    public void onAttach(Context context) {

        super.onAttach(context);

        if (context instanceof FragmentNewTableListener) {

            listener = (FragmentNewTableListener) context;

        } else {

            throw new RuntimeException(context.toString()

                    + " must implement FragmentAListener");

        }

    }



    @Override

    public void onDetach() {

        super.onDetach();

        listener = null;

    }

FRAGMENT XML

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent" >

    <Button

        android:id="@+id/addBtn"

        android:text="Add New Order"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:onClick="addItems"/>

    <ListView

        android:id="@android:id/list"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:drawSelectorOnTop="false"

        />

</LinearLayout>

import android.content.Context;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ListView;



import java.util.ArrayList;





public class FragmentNewTable extends Fragment {

    private FragmentNewTableListener listener;

    private Button addToList;

    private ArrayList<String> listItems;

    private ArrayAdapter<String> listViewAdapter;



    public interface FragmentNewTableListener {

        void onInputFragmentNewTableSent(CharSequence input);

    }





    @Nullable

    @Override

    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View v = inflater.inflate(R.layout.fragment_new_table, container, false);



        this.listItems = new ArrayList<String>();



        this.listViewAdapter = new ArrayAdapter<String>(

                getActivity(),

                android.R.layout.simple_list_item_1,

                this.listItems

        );





        ListView listView = (ListView) v.findViewById(R.id.list);

        listView.setAdapter(listViewAdapter);



        this.addToList = v.findViewById(R.id.addBtn);

        this.addToList.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                listItems.add("hi");

                listViewAdapter.notifyDataSetChanged();

            }

        });



        return v;

    }



    public void updateEditText(CharSequence newText) {

        //editText.setText(newText);

    }



    @Override

    public void onAttach(Context context) {

        super.onAttach(context);

        if (context instanceof FragmentNewTableListener) {

            listener = (FragmentNewTableListener) context;

        } else {

            throw new RuntimeException(context.toString()

                    + " must implement FragmentAListener");

        }

    }



    @Override

    public void onDetach() {

        super.onDetach();

        listener = null;

    }

}