Android Open Source - todo-android Todo Activity

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License

The source code is released under:

MIT License

Java Source Code

package me.ishan.todo.app;
//from w  w w  .  j  av a  2s .  c o m
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
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.EditText;
import android.widget.ListView;

import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;


public class TodoActivity extends ActionBarActivity {
    private final int REQUEST_CODE = 20;

    private ArrayList<String> todoItems;
    private ArrayAdapter<String> aTodoItems;
    private ListView lvItems;
    private EditText etNewItem;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_todo);
        etNewItem = (EditText) findViewById(R.id.etNewItem);
        lvItems = (ListView) findViewById(R.id.lvItems);
        readItems();
        aTodoItems = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, todoItems);
        lvItems.setAdapter(aTodoItems);
        setupListViewListener();
    }

    private void setupListViewListener() {
        lvItems.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> adapter, View item, int pos, long id) {
                todoItems.remove(pos);
                aTodoItems.notifyDataSetChanged();
                writeItems();
                return true;
            }
        });

        lvItems.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapter, View item, int pos, long id) {
                String todoItemText = todoItems.get(pos).toString();
                launchEditView(todoItemText, pos);
            }
        });
    }

    public void launchEditView(String todoItemText, int pos) {
        Intent i = new Intent(TodoActivity.this, EditItemActivity.class);
        i.putExtra("todoItem", todoItemText);
        i.putExtra("itemIndex", pos);
        startActivityForResult(i, REQUEST_CODE);
    }

    public void onAddedItem(View v) {
        String itemText = etNewItem.getText().toString();
        aTodoItems.add(itemText);
        etNewItem.setText(" ");
        writeItems();
    }

    public void readItems() {
        File filesDir = getFilesDir();
        File todoFile = new File(filesDir, "todo.txt");
        try {
            todoItems = new ArrayList<String>(FileUtils.readLines(todoFile));
        } catch (IOException e) {
            todoItems = new ArrayList<String>();
        }
    }

    public void writeItems() {
        File filesDir = getFilesDir();
        File todoFile = new File(filesDir, "todo.txt");
        try {
            FileUtils.writeLines(todoFile, todoItems);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK && requestCode == REQUEST_CODE) {
            String editedItemText = data.getExtras().getString("editedItemText");
            int editedItemIndex = data.getExtras().getInt("editedItemIndex");
            todoItems.set(editedItemIndex, editedItemText);
            aTodoItems.notifyDataSetChanged();
            writeItems();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.todo, 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();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

Java Source Code List

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