/*  TimePickerDemoActivity.java 

    2012-09-18 File created by Kari Laitinen
    2016-03-31 Last modification.

    This is an example of how the user can set a time by using the
    standard TimePickerDialog.

    This program needs the following layout file:
       activity_time_picker_demo.xml

    This program does not work in prior 3.0 Android versions.

    A DatePickerDialog can be used in the same way as TimePickerDialog. See
    http://developer.android.com/guide/topics/ui/controls/pickers.html
 
 */

package time.picker.demo ;

import android.app.Activity ;
import android.app.TimePickerDialog ;
import android.app.Dialog ;
import android.app.DialogFragment ;

import android.os.Bundle ;
import android.widget.TextView ;
import android.widget.TimePicker ;
import android.view.View ;
import java.util.Calendar ;

public class TimePickerDemoActivity extends Activity
{
   private TextView text_view_for_time ;

   private int current_selected_hour ;
   private int current_selected_minute ;


   class TimePickerFragment extends DialogFragment
                            implements TimePickerDialog.OnTimeSetListener
   {
      @Override
      public Dialog onCreateDialog( Bundle savedInstanceState )
      {   
         // Create a new instance of TimePickerDialog and return it
         // 'true' as the last parameter means that the time
         // will be shown in 24-hour format. 
         return new TimePickerDialog( getActivity(),
                                      this, current_selected_hour,
                                      current_selected_minute, true ) ;

      }

      //  The following method will be called automatically
      //  after the user has made a selection with the TimePicker

      public void onTimeSet( TimePicker view,
                             int new_selected_hour_of_day,
                             int new_selected_minute )
      {
         current_selected_hour   = new_selected_hour_of_day ;
         current_selected_minute = new_selected_minute ;
         update_text_view() ;
      }
   }


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

      setContentView( R.layout.activity_time_picker_demo ) ;

      text_view_for_time = (TextView) findViewById( R.id.text_view_for_time );

      // We'll use the current system time as the time that will
      // be shown to the user in the beginning.

      Calendar current_system_time = Calendar.getInstance();

      current_selected_hour = current_system_time.get( Calendar.HOUR_OF_DAY ) ;
      current_selected_minute = current_system_time.get( Calendar.MINUTE ) ;

      update_text_view() ;
   }

   //  The following method will be called after the user presses
   //  a button on the screen.

   public void show_time_picker_dialog( View clicked_button )
   {
      DialogFragment time_picker_fragment = new TimePickerFragment() ;

      time_picker_fragment.show( getFragmentManager(), "timePicker" ) ;
   }

   private void update_text_view()
   {
      text_view_for_time.setText( 

         String.format( "%02d:%02d", current_selected_hour,
                                     current_selected_minute ) ) ;
   }
}



/*  NOTES

    This program is a simplified verions of standard
    Android example DateWidgets1.java.

    Here is an almost original version of the program:



public class TimePickerDemoActivity extends Activity
{
    // where we display the selected date and time
    private TextView text_view_for_time;

    // date and time
    private int mYear;
    private int mMonth;
    private int mDay;
    private int mHour;
    private int mMinute;

    static final int TIME_DIALOG_ID = 0;
    static final int DATE_DIALOG_ID = 1;

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

        setContentView( R.layout.time_picker_demo_activity ) ;

        text_view_for_time = (TextView) findViewById(R.id.dateDisplay);

        Button pickDate = (Button) findViewById(R.id.pickDate);
        pickDate.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                showDialog(DATE_DIALOG_ID);
            }
        });

        Button pickTime = (Button) findViewById(R.id.pickTime);
        pickTime.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                showDialog(TIME_DIALOG_ID);
            }
        });

        final Calendar c = Calendar.getInstance();
        mYear = c.get(Calendar.YEAR);
        mMonth = c.get(Calendar.MONTH);
        mDay = c.get(Calendar.DAY_OF_MONTH);
        mHour = c.get(Calendar.HOUR_OF_DAY);
        mMinute = c.get(Calendar.MINUTE);

        update_text_view();
    }

    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
            case TIME_DIALOG_ID:
                return new TimePickerDialog(this,
                        mTimeSetListener, mHour, mMinute, false);
            case DATE_DIALOG_ID:
                return new DatePickerDialog(this,
                            mDateSetListener,
                            mYear, mMonth, mDay);
        }
        return null;
    }

    @Override
    protected void onPrepareDialog(int id, Dialog dialog) {
        switch (id) {
            case TIME_DIALOG_ID:
                ((TimePickerDialog) dialog).updateTime(mHour, mMinute);
                break;
            case DATE_DIALOG_ID:
                ((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);
                break;
        }
    }    

    private void update_text_view() {
        text_view_for_time.setText(
            new StringBuilder()
                    // Month is 0 based so add 1
                    .append(mMonth + 1).append("-")
                    .append(mDay).append("-")
                    .append(mYear).append(" ")
                    .append(pad(mHour)).append(":")
                    .append(pad(mMinute)));
    }

    private DatePickerDialog.OnDateSetListener mDateSetListener =
            new DatePickerDialog.OnDateSetListener() {

                public void onDateSet(DatePicker view, int year, int monthOfYear,
                        int dayOfMonth) {
                    mYear = year;
                    mMonth = monthOfYear;
                    mDay = dayOfMonth;
                    update_text_view();
                }
            };

    private TimePickerDialog.OnTimeSetListener mTimeSetListener =
            new TimePickerDialog.OnTimeSetListener() {

                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    mHour = hourOfDay;
                    mMinute = minute;
                    update_text_view();
                }
            };

    private static String pad(int c) {
        if (c >= 10)
            return String.valueOf(c);
        else
            return "0" + String.valueOf(c);
    }
}


***/