Java tutorial
/* * Copyright 2012 David Cesarino de Sousa * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.itcorea.coreonwallet; import android.annotation.TargetApi; import android.app.Activity; import android.app.DatePickerDialog; import android.app.DatePickerDialog.OnDateSetListener; import android.app.Dialog; import android.content.DialogInterface; import android.os.Build; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.widget.DatePicker; public class DatePickerDialogFragment extends DialogFragment { public static final String YEAR = "Year"; public static final String MONTH = "Month"; public static final String DATE = "Day"; private OnDateSetListener mListener; @Override public void onAttach(Activity activity) { super.onAttach(activity); this.mListener = (OnDateSetListener) activity; } @Override public void onDetach() { this.mListener = null; super.onDetach(); } @TargetApi(11) @Override public Dialog onCreateDialog(Bundle savedInstanceState) { Bundle b = getArguments(); int y = b.getInt(YEAR); int m = b.getInt(MONTH); int d = b.getInt(DATE); final DatePickerDialog picker = new DatePickerDialog(getActivity(), getConstructorListener(), y, m, d); if (hasJellyBeanAndAbove()) { picker.setButton(DialogInterface.BUTTON_POSITIVE, getActivity().getString(android.R.string.ok), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { DatePicker dp = picker.getDatePicker(); mListener.onDateSet(dp, dp.getYear(), dp.getMonth(), dp.getDayOfMonth()); } }); picker.setButton(DialogInterface.BUTTON_NEGATIVE, getActivity().getString(android.R.string.cancel), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }); } return picker; } private static boolean hasJellyBeanAndAbove() { return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN; } private OnDateSetListener getConstructorListener() { return hasJellyBeanAndAbove() ? null : mListener; } }