package com.example.jbt.listviewexample;

import android.content.Intent;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    private  ArrayList<String> list;
    private ListView lv;
    private ArrayAdapter<String> adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        list = new ArrayList<>();
        list.add("ABC1");
        list.add("ABC2");
        list.add("ABC3");
        list.add("ABC4");
        list.add("ABC4");

        lv = (ListView)findViewById(R.id.listView);

        adapter = new ArrayAdapter<String>(this,R.layout.row,list);

        lv.setAdapter(adapter);

        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(MainActivity.this, list.get(position) + " " + position, Toast.LENGTH_SHORT).show();
                if (position == 1) {
                    TextView tv = (TextView)view;
                    tv.setBackgroundColor(Color.GREEN);
                }
            }
        });

        Button go = (Button)findViewById(R.id.button);
        go.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                list.add("new ABC");
                adapter.notifyDataSetChanged();

            }
        });
    }


}