DatePickerActivity.java :  » UnTagged » stevie » de » unikoblenz » west » csxpoi » Android Open Source

package de.unikoblenz.west.csxpoi;

import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;

import de.unikoblenz.west.csxpoi.R;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;

/**
 * DatePickerActivity shows a separate window, where the user can set a date and
 * send it back to the csxPOI activity.
 * 
 * @author Daniel Schmeiss
 * 
 */
public class DatePickerActivity extends Activity {

  /**
   * the {@link DatePicker}
   */
  private DatePicker mDate;

  /**
   * control buttons at the bottom of this activity
   */
  private Button mCancelButton, mSaveButton, mTodayButton;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.date_picker_activity);

    mDate = (DatePicker) findViewById(R.id.date_picker_picker);
    mCancelButton = (Button) findViewById(R.id.date_picker_cancel_button);
    mSaveButton = (Button) findViewById(R.id.date_picker_save_button);
    mTodayButton = (Button) findViewById(R.id.date_picker_today_button);

    mDate.setVisibility(View.VISIBLE);

    Bundle extras = getIntent().getExtras();

    // update the date, if no date is given, finish
    if (extras != null) {
      mDate.updateDate(extras.getInt("year"), extras.getInt("month"),
          extras.getInt("day"));
    } else {
      finish();
    }

    mCancelButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        finish();
      }
    });

    mSaveButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        returnResult();
      }
    });

    mTodayButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        Calendar cal = new GregorianCalendar(TimeZone.getDefault());
        mDate.updateDate(cal.get(Calendar.YEAR), cal
            .get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH));
      }
    });

  }

  /**
   * returnResult creates and sends an intent to the {@link CsxPoiActivity},
   * that contains the chosen date.
   */
  private void returnResult() {
    Intent resultIntent = new Intent(DatePickerActivity.this,
        CsxPoiActivity.class);
    resultIntent.putExtra("year", mDate.getYear());
    resultIntent.putExtra("month", mDate.getMonth());
    resultIntent.putExtra("day", mDate.getDayOfMonth());
    setResult(RESULT_OK, resultIntent);
    finish();
  }
}