Android Open Source - Android-CriminalIntent Date Picker Fragment

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License

The source code is released under:

MIT License

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Java Source Code

package com.bignerdranch.android.criminalintent;
/* www  .  j ava2  s  .  co m*/
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.View;
import android.widget.DatePicker;

import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
 * DatePickerFragment to hold a date picker.
 * Created by mweekes on 12/21/13.
 */
public class DatePickerFragment extends DialogFragment {

    public static final String EXTRA_DATE = "com.bignerdranch.android.criminalintent.date";

    private Date mDate;

    public static DatePickerFragment newInstance(Date date) {
        Bundle args = new Bundle();
        args.putSerializable(EXTRA_DATE, date);

        DatePickerFragment fragment = new DatePickerFragment();
        fragment.setArguments(args);

        return fragment;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        mDate = (Date) getArguments().getSerializable(EXTRA_DATE);

        // Create a calendar to get the integers needed
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(mDate);
        int year = calendar.get(Calendar.YEAR);
        int month = calendar.get(Calendar.MONTH);
        int day = calendar.get(Calendar.DAY_OF_MONTH);

        View v = getActivity().getLayoutInflater().inflate(R.layout.dialog_date, null);

        DatePicker datePicker = (DatePicker) v.findViewById(R.id.dialog_date_datePicker);
        datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {
            @Override
            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                // convert int values to Date object
                mDate = new GregorianCalendar(year, monthOfYear, dayOfMonth).getTime();

                // preserve selected values on rotation
                getArguments().putSerializable(EXTRA_DATE, mDate);
            }
        });

        return new AlertDialog.Builder(getActivity())
                .setView(v) //
                .setTitle(R.string.date_picker_title) //
                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        sendResult(Activity.RESULT_OK);
                    }
                }) //
                .create();
    }

    private void sendResult(int resultCode) {
        if (getTargetFragment() == null) return;

        Intent intent = new Intent();
        intent.putExtra(EXTRA_DATE, mDate);

        getTargetFragment().onActivityResult(getTargetRequestCode(), resultCode, intent);
    }
}

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