Android Open Source - simple-todo Todo Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.fcduarte.todoapp.activity;
/*from   w  ww  . j a v a  2  s . c om*/
import android.app.Activity;
import android.app.Fragment;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.widget.CursorAdapter;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;

import com.fcduarte.todoapp.R;
import com.fcduarte.todoapp.database.TodoContract.TodoItem;
import com.fcduarte.todoapp.database.TodoItemDataSource;
import com.fcduarte.todoapp.util.SwipeDismissListViewTouchListener;

public class TodoActivity extends Activity {

  public static int RESULT_OK = 200;
  public static int RESULT_NOT_MODIFIED = 304;
  private static int REQUEST_EDIT_ITEM = 0;

  private static TodoItemDataSource datasource;
  private static SimpleCursorAdapter itemsAdapter;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_todo);

    if (savedInstanceState == null) {
      getFragmentManager().beginTransaction().add(R.id.container, new MainFragment()).commit();
    }
    
    datasource = new TodoItemDataSource(this);
    datasource.open();
    
    itemsAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, 
        datasource.getAll(), new String[] { TodoItem.COLUMN_NAME_ITEM_DESCRIPTION }, 
        new int[] { android.R.id.text1 }, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.todo, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.action_settings) {
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK && requestCode == REQUEST_EDIT_ITEM) {
      Long itemId = data.getLongExtra(EditItemActivity.ITEM_ID, -1);
      String newItemDescription = data.getStringExtra(EditItemActivity.ITEM_DESCRIPTION);
      updateItem(itemId, newItemDescription);
    }
  }

  public static class MainFragment extends Fragment {

    private ListView lvItems;
    private View rootView;
    private Button btnAddItem;
    private EditText etNewItem;


    public MainFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
      rootView = inflater.inflate(R.layout.fragment_todo, container, false);
      etNewItem = (EditText) rootView.findViewById(R.id.etNewItem);

      lvItems = (ListView) rootView.findViewById(R.id.lvItems);
      lvItems.setAdapter(itemsAdapter);
      
      SwipeDismissListViewTouchListener touchListener = new SwipeDismissListViewTouchListener(
          lvItems,
          new SwipeDismissListViewTouchListener.DismissCallbacks() {
            @Override
            public boolean canDismiss(int position) {
              return true;
            }

            @Override
            public void onDismiss(ListView listView, int[] reverseSortedPositions) {
              for (int position : reverseSortedPositions) {
                removeTodoItem(position);
              }
            }
          });
      
          lvItems.setOnTouchListener(touchListener);
          lvItems.setOnScrollListener(touchListener.makeScrollListener());

      lvItems.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
          Cursor cursor = itemsAdapter.getCursor();
          
          Intent intent = new Intent(getActivity(), EditItemActivity.class);
          intent.putExtra(EditItemActivity.ITEM_ID, 
              cursor.getLong(TodoItem.COLUMN_NAME_ID_POSITION));
          intent.putExtra(EditItemActivity.ITEM_DESCRIPTION, 
              cursor.getString(TodoItem.COLUMN_NAME_ITEM_DESCRIPTION_POSITION));
          
          getActivity().startActivityForResult(intent, TodoActivity.REQUEST_EDIT_ITEM);          
        }
      });

      btnAddItem = (Button) rootView.findViewById(R.id.btnAddItem);
      btnAddItem.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
          addTodoItem();
          
          etNewItem.setText("");
          lvItems.smoothScrollToPosition(itemsAdapter.getCount());
        }
      });

      return rootView;
    }

    private void addTodoItem() {
      datasource.create(etNewItem.getText().toString());
      itemsAdapter.changeCursor(datasource.getAll());
    }

    private void removeTodoItem(int position) {
      Cursor cursor = itemsAdapter.getCursor();
      cursor.moveToPosition(position);
      
      datasource.delete(cursor.getLong(TodoItem.COLUMN_NAME_ID_POSITION));
      itemsAdapter.changeCursor(datasource.getAll());
    }

  }
  
  private void updateItem(Long itemId, String newItemDescription) {
    datasource.update(itemId, newItemDescription);
    itemsAdapter.changeCursor(datasource.getAll());
  }

}

Java Source Code List

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