Java tutorial
/* Transportr * Copyright (C) 2013 - 2016 Torsten Grote * * This program is Free Software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package de.grobox.liberario.fragments; import android.app.DatePickerDialog; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.DialogFragment; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.DatePicker; import android.widget.ImageButton; import android.widget.TextView; import android.widget.TimePicker; import java.text.DateFormat; import java.util.Calendar; import de.grobox.liberario.settings.Preferences; import de.grobox.liberario.R; import de.grobox.liberario.utils.DateUtils; import static android.text.format.DateFormat.getDateFormat; import static android.text.format.DateUtils.MINUTE_IN_MILLIS; import static java.util.Calendar.DAY_OF_MONTH; import static java.util.Calendar.HOUR_OF_DAY; import static java.util.Calendar.MINUTE; import static java.util.Calendar.MONTH; import static java.util.Calendar.YEAR; public class TimeDateFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener, TimePicker.OnTimeChangedListener { public static final String TAG = TimeDateFragment.class.getName(); private static final String CALENDAR = "calendar"; public static TimeDateFragment newInstance(Calendar calendar) { TimeDateFragment f = new TimeDateFragment(); Bundle args = new Bundle(); args.putSerializable(CALENDAR, calendar); f.setArguments(args); return f; } @Nullable private TimeDateListener listener; private TimePicker timePicker; private TextView dateView; private Calendar calendar; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (Preferences.darkThemeEnabled(getActivity())) { setStyle(DialogFragment.STYLE_NO_TITLE, R.style.SetHomeDialogTheme); } else { setStyle(DialogFragment.STYLE_NO_TITLE, R.style.SetHomeDialogTheme_Light); } if (savedInstanceState == null) { calendar = (Calendar) getArguments().getSerializable(CALENDAR); if (calendar == null) throw new IllegalArgumentException("Calendar missing"); } else { calendar = (Calendar) savedInstanceState.getSerializable(CALENDAR); } } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.fragment_time_date, container); // Time timePicker = (TimePicker) v.findViewById(R.id.timePicker); timePicker.setOnTimeChangedListener(this); showTime(calendar); // Date dateView = (TextView) v.findViewById(R.id.dateView); dateView.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { new DatePickerDialog(getContext(), TimeDateFragment.this, calendar.get(YEAR), calendar.get(MONTH), calendar.get(DAY_OF_MONTH)).show(); } }); showDate(calendar); // Previous and Next Date ImageButton prevDateButton = (ImageButton) v.findViewById(R.id.prevDateButton); prevDateButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { calendar.add(DAY_OF_MONTH, -1); showDate(calendar); } }); ImageButton nextDateButton = (ImageButton) v.findViewById(R.id.nextDateButton); nextDateButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { calendar.add(DAY_OF_MONTH, 1); showDate(calendar); } }); // Buttons Button okButton = (Button) v.findViewById(R.id.okButton); okButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { if (listener != null) { boolean now = DateUtils.isNow(calendar); boolean today = DateUtils.isToday(calendar); listener.onTimeAndDateSet(calendar, now, today); } dismiss(); } }); Button cancelButton = (Button) v.findViewById(R.id.cancelButton); cancelButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { dismiss(); } }); return v; } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putSerializable(CALENDAR, calendar); } @Override public void onTimeChanged(TimePicker timePicker, int hourOfDay, int minute) { calendar.set(HOUR_OF_DAY, hourOfDay); calendar.set(MINUTE, minute); } @Override public void onDateSet(DatePicker datePicker, int year, int month, int day) { calendar.set(YEAR, year); calendar.set(MONTH, month); calendar.set(DAY_OF_MONTH, day); showDate(calendar); } public void setTimeDateListener(TimeDateListener listener) { this.listener = listener; } @SuppressWarnings("deprecation") private void showTime(Calendar c) { timePicker.setCurrentHour(c.get(HOUR_OF_DAY)); timePicker.setCurrentMinute(c.get(MINUTE)); } @SuppressWarnings("WrongConstant") private void showDate(Calendar c) { Calendar now = Calendar.getInstance(); if (isSameMonth(now, c) && c.get(DAY_OF_MONTH) == now.get(DAY_OF_MONTH) - 1) { dateView.setText(getString(R.string.yesterday)); } else if (isSameMonth(now, c) && c.get(DAY_OF_MONTH) == now.get(DAY_OF_MONTH)) { dateView.setText(getString(R.string.today)); } else if (isSameMonth(now, c) && c.get(DAY_OF_MONTH) == now.get(DAY_OF_MONTH) + 1) { dateView.setText(getString(R.string.tomorrow)); } else { DateFormat tf = getDateFormat(getContext().getApplicationContext()); dateView.setText(tf.format(calendar.getTime())); } } private boolean isSameMonth(Calendar now, Calendar c) { return c.get(YEAR) == now.get(YEAR) && c.get(MONTH) == now.get(MONTH); } public interface TimeDateListener { void onTimeAndDateSet(Calendar calendar, boolean isNow, boolean isToday); } }