Android Open Source - AndroidToDoList Main Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.example.todolist;
/*  w  w w  .  j  a  v a  2  s.  c  om*/
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.lang.reflect.Type;
import java.util.ArrayList;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Paint;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends Activity {
  
  static public ArrayList<todoItem> todoArray = new ArrayList<todoItem>();
  public ArrayList<todoItem> ArchiveList = new ArrayList<todoItem>();
  private ArrayAdapter<todoItem> todoAdapter;
    private ListView listview;
    public ArrayList<todoItem> archiveArray = new ArrayList<todoItem>();
    private static final String MAINFILENAME = "mainfile.sav";
    private static final String ARCHIVEFILENAME = "archivefile.sav";
    
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
    loadFromFile(MAINFILENAME, todoArray);
    loadFromFile(ARCHIVEFILENAME, archiveArray);
      
    
        //initialize ArrayAdapter
        todoAdapter = new ArrayAdapter<todoItem>(getBaseContext(), android.R.layout.simple_list_item_1, todoArray);
        todoAdapter.notifyDataSetChanged();
        
        listview = (ListView) findViewById(R.id.addTodoListView);
        listview.setAdapter(todoAdapter);        
        listview.setOnItemClickListener(new OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> adapterView, View view,
          int position, long id) {
//        // TODO Auto-generated method stub
        todoItem todo = todoAdapter.getItem(position);
        TextView textTodo = (TextView) view.findViewById(view.getId());
        todo.setStatus(!todo.isDone());
        
        if(todo.isDone()){
              textTodo.setPaintFlags(textTodo.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
             
        }
        else{
              textTodo.setPaintFlags(textTodo.getPaintFlags() & (~Paint.STRIKE_THRU_TEXT_FLAG));
        }
        int i, d, u = 0;
        for(i = u = d = 0; i < todoArray.size(); i++) {
          if(todoArray.get(i).isDone()) {
            d++;
          }
          else {
            u++;
          }
            }
        Toast.makeText(getBaseContext(), d+" done "+ u + " undone", Toast.LENGTH_SHORT).show();

        saveInFile(MAINFILENAME, todoArray);
      }
    });
        listview.setOnItemLongClickListener(new OnItemLongClickListener() {

      @Override
      public boolean onItemLongClick(AdapterView<?> parent, View view,
          int position, long id) {
        // TODO Auto-generated method stub
//        AlertDialog.Builder adb = new AlertDialog.Builder(getBaseContext());
//        adb.setMessage("");
        dialogBox(position);
        return false;
      }
    });    
        
    }
    
    public void dialogBox(int position) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        final int finalPosition = position;
        builder.setTitle("What would you like to do?")
               .setItems(R.array.dialog_box_string, new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int which) {
                   // The 'which' argument contains the index position
                   // of the selected item
                     if(which == 0){
                       //Toast.makeText(getBaseContext(), "Archive", Toast.LENGTH_SHORT).show();
                       archiveArray.add(todoAdapter.getItem(finalPosition));
                       saveInFile(ARCHIVEFILENAME, archiveArray);
                       todoArray.remove(finalPosition);
                       todoAdapter.notifyDataSetChanged();

                     }
                     else if(which == 1){
                       Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts(
                          "mailto","", null));
                    emailIntent.putExtra(Intent.EXTRA_SUBJECT, todoAdapter.getItem(finalPosition).toString());
                    startActivity(Intent.createChooser(emailIntent, "Send email..."));
                       
                     }
                     else if(which == 2){
                       todoArray.remove(finalPosition);
                       todoAdapter.notifyDataSetChanged();
                       updateCrossOuts();
                       saveInFile(MAINFILENAME, todoArray);
            }
                     
               }
        });
        builder.show();
    }
    
    public void updateCrossOuts() {
      //View view;
      TextView textView;
      if(listview.getCount() == 1) {
        return;
      }
      
      for(int i = 0; i < listview.getCount(); i++) {
        textView = (TextView) listview.getChildAt(i);
        todoItem todo = todoAdapter.getItem(i);
        
        if(textView == null) {
          return;
        }
        
        if(todo.isDone()) {
            textView.setPaintFlags(textView.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
            //textView.setText("Update!");
            //Toast.makeText(getBaseContext(), todo.toString()+" is done!", Toast.LENGTH_SHORT).show();
      }
      else {
            textView.setPaintFlags(textView.getPaintFlags() & (~Paint.STRIKE_THRU_TEXT_FLAG));
            //textView.setText("Updated");
            //Toast.makeText(getBaseContext(),  todo.toString()+" not done", Toast.LENGTH_SHORT).show();

        }
      }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.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();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    
    public void todoArchive(MenuItem menu) {
    Intent intent = new Intent(MainActivity.this, ToDoArchive.class);
    startActivity(intent);
  }
    
    public void addToDo(View view) throws IOException {
      TextView textview = (TextView) findViewById(R.id.addTodoText);
      String TodoText = textview.getText().toString();
      if(TodoText.equals("")) {
        Toast.makeText(getBaseContext(), "Can't add empty to do item.", Toast.LENGTH_SHORT).show();
        return;
      }
      //Toast.makeText(getBaseContext(), TodoText, Toast.LENGTH_SHORT).show();
      todoItem todo = new todoItem(TodoText);
      textview.setText("");
      todoArray.add(todo);
      todoAdapter.notifyDataSetChanged();
      updateCrossOuts();
      saveInFile(MAINFILENAME, todoArray);
    }


    public void loadFromFile(String FILENAME, ArrayList<todoItem> todoArray) {
      if(todoArray == null) {
        todoArray = new ArrayList<todoItem>();
      }
      try {
        FileInputStream fis = openFileInput(FILENAME);
        BufferedReader in = new BufferedReader(new InputStreamReader(fis));      
        //From http://www.javacreed.com/simple-gson-example/
        Gson gson = new Gson();
        
        Type ListType = new TypeToken<ArrayList<todoItem>>() {}.getType();
        todoArray = gson.fromJson(in, ListType);
      } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }

    public void saveInFile(String FILENAME, ArrayList<todoItem> todoArray) {
      try {
        FileOutputStream fos = openFileOutput(FILENAME,0);
        Gson gson = new Gson();
        OutputStreamWriter osw = new OutputStreamWriter(fos);
        gson.toJson(todoArray, osw);
        osw.flush();
      osw.close();
      } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
}

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