public class Tab_1 extends Activity {

    private TextView displayTime;
    private Button pickTime;

    private int pHour;
    private int pMinute;

    static final int TIME_DIALOG_ID = 0;

    /** Callback received when the user "picks" a time in the dialog */
    private TimePickerDialog.OnTimeSetListener mTimeSetListener =
        new TimePickerDialog.OnTimeSetListener() {
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                pHour = hourOfDay;
                pMinute = minute;
                updateDisplay();
                displayToast();
            }
        };

    /** Updates the time in the TextView */
    private void updateDisplay() {
        displayTime.setText(
            new StringBuilder()
                    .append(pad(pHour)).append(":")
                    .append(pad(pMinute)));
    }

    /** Displays a notification when the time is updated */
    private void displayToast() {
        Toast.makeText(this, new StringBuilder().append("Time choosen is ").append(displayTime.getText()),   Toast.LENGTH_SHORT).show();

    }

    /** Add padding to numbers less than ten */
    private static String pad(int c) {
        if (c >= 10)
            return String.valueOf(c);
        else
            return "0" + String.valueOf(c);
    }

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tab_1);




        /** Capture our View elements */
        displayTime = (TextView) findViewById(R.id.timeDisplay);
        pickTime = (Button) findViewById(R.id.pickTime);

        /** Listener for click event of the button */
        pickTime.setOnClickListener(new View.OnClickListener() {


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

        /** Get the current time */
        final Calendar cal = Calendar.getInstance();
        pHour = cal.get(Calendar.HOUR_OF_DAY);
        pMinute = cal.get(Calendar.MINUTE);

        /** Display the current time in the TextView */
        updateDisplay();
    }

    /** Create a new dialog for time picker */

    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
        case TIME_DIALOG_ID:
            return new TimePickerDialog(this,
                    mTimeSetListener, pHour, pMinute, false);
        }
        return null;
    }



}