Adding user input from Edit Text into List View

Question

I'm trying to get a user input from Edit Text into List View, I had seen the answer to this similar question but I'm unable to figure it out

I tried this, received no errors from the IDE, but it does not work

public class ListtestActivity extends Activity {
/** Called when the activity is first created. */

Button bt;
EditText et;
TextView tv;
ListView lv;
ArrayAdapter<String> adapter;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    bt = (Button) findViewById(R.id.button1);
    et = (EditText) findViewById(R.id.editText1);
    tv = (TextView) findViewById(R.id.textView1);
    lv = (ListView) findViewById(R.id.listView1);
    String input = et.getText().toString();
    String[] values = new String[] {"", input};

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, values);
    lv.setAdapter(adapter);

Tried the following also

public class ListtestActivity extends Activity {
ArrayAdapter<String> m_adapter;
ArrayList<String> m_listItems = new ArrayList<String>();
/** Called when the activity is first created. */

Button bt;
EditText et;
TextView tv;
ListView lv;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    bt = (Button) findViewById(R.id.button1);
    et = (EditText) findViewById(R.id.editText1);
    tv = (TextView) findViewById(R.id.textView1);
    lv = (ListView) findViewById(R.id.listView1);
    m_adapter = new ArrayAdapter<String>(this, R.layout.main, m_listItems);
    lv.setAdapter(m_adapter);
    final String input = et.getText().toString();

    bt.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub

            m_listItems.add(new String(input));
            m_adapter.notifyDataSetChanged();
        }
    });

Any help would be greatly appreciated

Thank You

*Very new to Android/Java/SO

Answer 1

in Second code snippet, change row of m_adapter

  m_adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, m_listItems);

Then add in String in m_listItems

bt.setOnClickListener(new View.OnClickListener() {

    public void onClick(View v) {

        String input = et.getText().toString();
        if(null!=input&&input.length()>0){     

        m_listItems.add(input);

        m_adapter.notifyDataSetChanged();

      }
    }
});