package com.travis.q4dynamiclistview;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private ArrayList<String> nameList;
private ArrayAdapter<String> adapter;
private TextView textView;
private ListView listView;
private EditText editText;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
textView = (TextView) findViewById(R.id.sign_text);
editText = (EditText) findViewById(R.id.input_place);
button = (Button) findViewById(R.id.update_button);
button.setOnClickListener(this);
listView = (ListView) findViewById(R.id.people_list);
nameList = new ArrayList<>();
adapter = new ArrayAdapter<>(this, android.R.layout.simple_expandable_list_item_1, nameList);
listView.setAdapter(adapter);
}
@Override
public void onClick(View v) {
String name = editText.getText().toString();
if (name == "") return;
String text = name + " is learning Android development!";
textView.setText(text);
editText.setText(null);
//adapter.add(name);
nameList.add(name);
adapter.notifyDataSetChanged();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}