Android Open Source - TaskSucker Main Activity

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Back to project page TaskSucker.

License

The source code is released under:

MIT License

Java Source Code

package com.jakkub.tasksucker;
/*  ww w .  j  av  a 2s  .c o m*/
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;

import com.uottawa.notesgo.R;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.format.DateFormat;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.CheckBox;
import android.widget.ListView;

public class MainActivity extends Activity {
  
  public final static String EXTRA_EDIT_ID = "com.example.tasksucker.EDIT_ID";
  public final static String EXTRA_ALARM_ID = "com.example.tasksucker.ALARM_ID";

  // Create list of tasks
    ArrayList<Task> tasks = new ArrayList<Task>();
    TaskAdapter adapter;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

      // Populate tasks list
      DbHelper mDbHelper = DbHelper.getInstance(this);
      tasks = mDbHelper.getAllTasks();

      // Get List View
    ListView lv = (ListView) findViewById(R.id.listView1);

    // Populate List View with tasks
    adapter = new TaskAdapter(this, tasks);
        lv.setAdapter(adapter);
        
        // Set an Item Click Listener
        lv.setOnItemClickListener(new OnItemClickListener(){

      @Override
      public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) {
        openEdit(position);
      }
          });
        
        // Register floating context menu
        registerForContextMenu(lv);
        
        
  }

  @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 presses on the action bar items
      switch (item.getItemId()) {
        case R.id.action_delete_all:
          deleteAll();
          return true;
          case R.id.action_new:
              openNew();
              return true;
          default:
              return super.onOptionsItemSelected(item);
      }
  }
  
  @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.context_menu, menu);
        
        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;

        // Get state of checkbox
        CheckBox done = (CheckBox)info.targetView.findViewById(R.id.cb_done);
        
        // Change the Done/Undone title
        if (done.isChecked()) 
        {
          menu.findItem(R.id.context_set_as_done_undone).setTitle(R.string.context_set_as_undone);
        }
        else
        {
          menu.findItem(R.id.context_set_as_done_undone).setTitle(R.string.context_set_as_done);
        }    
    }
  
  @Override
  public boolean onContextItemSelected(MenuItem item) {
      AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
      long position = info.id;
      View view = info.targetView;
      switch (item.getItemId()) {
        case R.id.context_set_as_done_undone:
          CheckBox done = (CheckBox)view.findViewById(R.id.cb_done);
          done.setChecked(!done.isChecked());
          return true;
          case R.id.context_edit:
            openEdit((int) position);
              return true;
          case R.id.context_delete:
            deleteTask((int) position);
              return true;
          default:
              return super.onContextItemSelected(item);
      }
  }

  private void openNew() {
    Intent intent = new Intent(this, NewTaskActivity.class);
      startActivity(intent);
  }
  
  private void openEdit(int pos) {
    // Get task id
    int id = tasks.get(pos).GetId();
    
    // Create intent
    Intent intent = new Intent(this, EditTaskActivity.class);
    
    // Put id to extra
    intent.putExtra(EXTRA_EDIT_ID, id);
    
    // Start edit activity
      startActivity(intent);
  }
  
  private void deleteTask(int pos) {
    // Remove task from database
    DbHelper mDbHelper = DbHelper.getInstance(this);
      mDbHelper.deleteTask(tasks.get(pos));
      
      // Cancel alarm if any
      if (tasks.get(pos).GetDeadline() != null)
      {
      cancelAlarm(getApplicationContext(), tasks.get(pos).GetId());
      }
      
      // Remove task from list
      tasks.remove(pos);
      
      // Invalidate adapter data set
      adapter.notifyDataSetChanged();
  }
  
  private void deleteAll() {
    // Initialize database helper
    DbHelper mDbHelper = DbHelper.getInstance(this);
    
    // Loop through the list
    for (int i = tasks.size()-1; i >= 0; i--) 
    {
      if(tasks.get(i).GetDone()) 
      {
        // Cancel Alarm if any
        if (tasks.get(i).GetDeadline() != null)
        {
          cancelAlarm(getApplicationContext(), tasks.get(i).GetId());
        }
        
        // Remove task from database
        mDbHelper.deleteTask(tasks.get(i));
        
        // Remove task from list
        tasks.remove(tasks.get(i));
      }
    }

    // Invalidate adapter data set
      adapter.notifyDataSetChanged();
  }
  
  
  public static void setAlarm(Context context, Calendar deadline, long id) 
    {
        Intent notifier = new Intent(context, AlarmReceiver.class);
        notifier.putExtra(EXTRA_ALARM_ID, id);
        PendingIntent throwNotification = PendingIntent.getBroadcast(context,
                (int) id, notifier, PendingIntent.FLAG_CANCEL_CURRENT);
        AlarmManager alarm = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        alarm.set(AlarmManager.RTC_WAKEUP, deadline.getTimeInMillis(), throwNotification);
    }
  
  
  public static void cancelAlarm(Context context, int id) {
    Intent notifier = new Intent(context, AlarmReceiver.class);
        notifier.putExtra(EXTRA_ALARM_ID, id);
    AlarmManager alarm = (AlarmManager) context.getSystemService(ALARM_SERVICE);
    PendingIntent throwNotification = PendingIntent.getBroadcast(context,
                (int) id, notifier, PendingIntent.FLAG_CANCEL_CURRENT);
    alarm.cancel(throwNotification);
  }
  
  public static Calendar parseDateTime(Context context, String date, String time)
  {
    Calendar deadline = new GregorianCalendar();
    
    // If date and time was not set, deadline is null
      if ((date == context.getString(R.string.new_task_set_date)) & (time == context.getString(R.string.new_task_set_time)))
      {
        deadline = null;
      }
      // If date was set and time was not set, deadline is at the noon of that day
      else if ((date != context.getString(R.string.new_task_set_date)) & (time == context.getString(R.string.new_task_set_time)))
      {
        // Try to parse deadline
        try 
      {
        Date d;
        d = new SimpleDateFormat("dd MMM yyyy H:mm", Locale.US).parse(date + " 12:00");
          
          deadline.setTime(d);
      } 
      catch (ParseException e) 
      {
        e.printStackTrace();
      }
      }
      // If the date was not set and time was set, deadline is in the next 24 hours
      else if ((date == context.getString(R.string.new_task_set_date)) & (time != context.getString(R.string.new_task_set_time)))
      {
        // Try to parse deadline
        try 
      {
          // Get current day as a string
          SimpleDateFormat dateFormat = new SimpleDateFormat("dd MMM yyyy", Locale.US);
        String today = dateFormat.format(deadline.getTime());
        
        // Parse and set date with current day
        Date d;
        d = new SimpleDateFormat(DateFormat.is24HourFormat(context) ? "dd MMM yyyy H:mm" : "dd MMM yyyy h:mm a", Locale.US).parse(today + " " + time);
        deadline.setTime(d);
        
        Calendar now = new GregorianCalendar();
        
        // If deadline is in the past, add 1 day
        if (now.after(deadline))
        {
          deadline.add(Calendar.DAY_OF_MONTH, 1);
        }
      } 
      catch (ParseException e) 
      {
        e.printStackTrace();
      }
      }
      else
      {
        // Try to parse deadline
        try 
      {
        Date d;
        d = new SimpleDateFormat(DateFormat.is24HourFormat(context) ? "dd MMM yyyy H:mm" : "dd MMM yyyy h:mm a", Locale.US).parse(date + " " + time);
          
          deadline.setTime(d);
      } 
      catch (ParseException e) 
      {
        e.printStackTrace();
      }
      }
      return deadline;
  }

}

Java Source Code List

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