Android ListView not updating and force closing

Question

I'm trying just to get a simple ListView to update when clicking an add button on my UI and taking the edittext and putting in the listview. Can someone look at this and tell me what I'm doing wrong. I've searched here and the developer site and can't figure it out. Thanks

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;

public class TaskTracker extends Activity {

private Button addButton;
int count = 0;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    addButton=(Button)findViewById(R.id.button1);
    ListView myListView= (ListView)findViewById(R.id.myListView);
    final EditText myEditText= (EditText)findViewById(R.id.editText1) ;

    final ArrayList<String> taskitems = new ArrayList<String>();
    final ArrayAdapter<String> aa;
    aa = new ArrayAdapter<String>(this, 0);
    myListView.setAdapter(aa);


    addButton.setOnClickListener(new OnClickListener(){
        public void onClick(View v){
            taskitems.add(count, myEditText.getText().toString());
            aa.notifyDataSetChanged();
            myEditText.setText("");
            count++;
            finish();
        }
    });




}
}

score 0 · Answer 1 · edited May 23 '17 at 12:34

0

You need to override the base adapter in order to have button clicks on list items.

Check out this link and follow one of the answers to his blog...

Android: ListView elements with multiple clickable buttons

edited May 23 '17 at 12:34

Community

1
1

answered Apr 06 '11 at 15:53

Anthony Graglia

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score 0 · Accepted Answer · answered Apr 06 '11 at 15:53

what about this taskitems? I would suggest to do it like that:

addButton.setOnClickListener(new OnClickListener(){
    public void onClick(View v){
        //taskitems.add(count, myEditText.getText().toString());
        aa.add(myEditText.getText().toString());
        aa.notifyDataSetChanged();
        myEditText.setText("");
        count++;
        finish();
    }
});

Android ListView not updating and force closing

2 Answers2