DatePickerDialogFragment.java

package com.ianhanniballake.contractiontimer.ui;

import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import android.widget.DatePicker;

import com.ianhanniballake.contractiontimer.BuildConfig;

import java.util.Calendar;

/**
 * Provides a DialogFragment for selecting a date
 */
public class DatePickerDialogFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {
    /**
     * Argument key for storing/retrieving the callback action
     */
    public final static String CALLBACK_ACTION = "com.ianhanniballake.contractiontimer.CALLBACK_ACTION_ARGUMENT";
    /**
     * Argument key for storing/retrieving the date associated with this dialog
     */
    public final static String DATE_ARGUMENT = "com.ianhanniballake.contractiontimer.Date";
    /**
     * Extra corresponding with the day of the month that was set
     */
    public final static String DAY_OF_MONTH_EXTRA = "com.ianhanniballake.contractionTimer.DAY_OF_MONTH_EXTRA";
    /**
     * Extra corresponding with the month of the year that was set
     */
    public final static String MONTH_OF_YEAR_EXTRA = "com.ianhanniballake.contractionTimer.MONTH_OF_YEAR_EXTRA";
    /**
     * Extra corresponding with the year that was set
     */
    public final static String YEAR_EXTRA = "com.ianhanniballake.contractionTimer.YEAR_EXTRA";
    private final static String TAG = DatePickerDialogFragment.class.getSimpleName();

    @Override
    @NonNull
    public Dialog onCreateDialog(final Bundle savedInstanceState) {
        final Calendar date = (Calendar) getArguments().getSerializable(DatePickerDialogFragment.DATE_ARGUMENT);
        final DatePickerDialog dialog = new DatePickerDialog(getActivity(), this, date.get(Calendar.YEAR),
                date.get(Calendar.MONTH), date.get(Calendar.DAY_OF_MONTH));
        dialog.setOnDismissListener(this);
        return dialog;
    }

    @Override
    public void onDateSet(final DatePicker view, final int year, final int monthOfYear, final int dayOfMonth) {
        final String action = getArguments().getString(DatePickerDialogFragment.CALLBACK_ACTION);
        if (BuildConfig.DEBUG)
            Log.d(TAG, "onDateSet: " + action);
        final Intent broadcast = new Intent(action);
        broadcast.putExtra(DatePickerDialogFragment.YEAR_EXTRA, year);
        broadcast.putExtra(DatePickerDialogFragment.MONTH_OF_YEAR_EXTRA, monthOfYear);
        broadcast.putExtra(DatePickerDialogFragment.DAY_OF_MONTH_EXTRA, dayOfMonth);
        final LocalBroadcastManager localBroadcastManager = LocalBroadcastManager.getInstance(getActivity());
        localBroadcastManager.sendBroadcast(broadcast);
    }
}