Java tutorial
/* * Copyright (C) 2009 University of Washington * * 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 org.odk.collect.android.widgets; import org.javarosa.core.model.data.DateTimeData; import org.javarosa.core.model.data.IAnswerData; import org.javarosa.form.api.FormEntryPrompt; import org.joda.time.DateTime; import org.odk.collect.android.application.Collect; import android.annotation.SuppressLint; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnCancelListener; import android.os.Build; import android.view.Gravity; import android.view.MotionEvent; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.CalendarView; import android.widget.DatePicker; import android.widget.EditText; import android.widget.HorizontalScrollView; import android.widget.LinearLayout; import android.widget.TimePicker; import java.lang.reflect.Field; import java.util.Calendar; import java.util.Date; /** * Displays a DatePicker widget. DateWidget handles leap years and does not allow dates that do not * exist. * * @author Carl Hartung (carlhartung@gmail.com) * @author Yaw Anokwa (yanokwa@gmail.com) */ public class DateTimeWidgettext extends QuestionWidget { private DatePicker mDatePicker; private TimePicker mTimePicker; private DatePicker.OnDateChangedListener mDateListener; private boolean hideDay = false; private boolean hideMonth = false; private boolean showCalendar = false; private HorizontalScrollView scrollView = null; public EditText textofwidget; public LinearLayout dialoglinear; public Dialog timedialog; public DateTimeWidgettext(Context context, FormEntryPrompt prompt) { super(context, prompt); textofwidget = new EditText(context); dialoglinear = new LinearLayout(context); dialoglinear.setOrientation(LinearLayout.VERTICAL); timedialog = new Dialog(context); mDatePicker = new DatePicker(getContext()); mDatePicker.setId(QuestionWidget.newUniqueId()); mDatePicker.setFocusable(!prompt.isReadOnly()); mDatePicker.setEnabled(!prompt.isReadOnly()); mTimePicker = new TimePicker(getContext()); mTimePicker.setId(QuestionWidget.newUniqueId()); mTimePicker.setFocusable(!prompt.isReadOnly()); mTimePicker.setEnabled(!prompt.isReadOnly()); mTimePicker.setPadding(0, 20, 0, 0); String clockType = android.provider.Settings.System.getString(context.getContentResolver(), android.provider.Settings.System.TIME_12_24); if (clockType == null || clockType.equalsIgnoreCase("24")) { mTimePicker.setIs24HourView(true); } hideDayFieldIfNotInFormat(prompt); mDateListener = new DatePicker.OnDateChangedListener() { @Override public void onDateChanged(DatePicker view, int year, int month, int day) { if (mPrompt.isReadOnly()) { setAnswer(); } else { // handle leap years and number of days in month // TODO // http://code.google.com/p/android/issues/detail?id=2081 // in older versions of android (1.6ish) the datepicker lets you pick bad dates // in newer versions, calling updateDate() calls onDatechangedListener(), causing an // endless loop. Calendar c = Calendar.getInstance(); c.set(year, month, 1); int max = c.getActualMaximum(Calendar.DAY_OF_MONTH); if (day > max) { if (!(mDatePicker.getDayOfMonth() == day && mDatePicker.getMonth() == month && mDatePicker.getYear() == year)) { Collect.getInstance().getActivityLogger().logInstanceAction(DateTimeWidgettext.this, "onDateChanged", String.format("%1$04d-%2$02d-%3$02d", year, month, max), mPrompt.getIndex()); mDatePicker.updateDate(year, month, max); } } else { if (!(mDatePicker.getDayOfMonth() == day && mDatePicker.getMonth() == month && mDatePicker.getYear() == year)) { Collect.getInstance().getActivityLogger().logInstanceAction(DateTimeWidgettext.this, "onDateChanged", String.format("%1$04d-%2$02d-%3$02d", year, month, day), mPrompt.getIndex()); mDatePicker.updateDate(year, month, day); } } } } }; mTimePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() { @Override public void onTimeChanged(TimePicker view, int hourOfDay, int minute) { Collect.getInstance().getActivityLogger().logInstanceAction(DateTimeWidgettext.this, "onTimeChanged", String.format("%1$02d:%2$02d", hourOfDay, minute), mPrompt.getIndex()); } }); setGravity(Gravity.LEFT); if (showCalendar) { scrollView = new HorizontalScrollView(context); LinearLayout ll = new LinearLayout(context); ll.addView(mDatePicker); ll.setPadding(10, 10, 10, 10); scrollView.addView(ll); dialoglinear.addView(scrollView); } else { dialoglinear.addView(mDatePicker); } dialoglinear.addView(mTimePicker); textofwidget.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View arg0, MotionEvent arg1) { // TODO Auto-generated method stub timedialog.setContentView(dialoglinear); timedialog.show(); timedialog.setCanceledOnTouchOutside(true); return false; } }); timedialog.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { // TODO Auto-generated method stub textofwidget.setText( mDatePicker.getDayOfMonth() + "/" + mDatePicker.getMonth() + "/" + mDatePicker.getYear() + " " + mTimePicker.getCurrentHour() + ":" + mTimePicker.getCurrentMinute()); // setAnswer(); } }); addView(textofwidget); // If there's an answer, use it. setAnswer(); } /** * Shared between DateWidget and DateTimeWidget. * There are extra appearance settings that do not apply for dateTime... * TODO: move this into utilities or base class? * * @param prompt */ @SuppressLint("NewApi") private void hideDayFieldIfNotInFormat(FormEntryPrompt prompt) { String appearance = prompt.getQuestion().getAppearanceAttr(); if (appearance == null) { if (Build.VERSION.SDK_INT >= 11) { showCalendar = true; this.mDatePicker.setCalendarViewShown(true); if (Build.VERSION.SDK_INT >= 12) { CalendarView cv = this.mDatePicker.getCalendarView(); cv.setShowWeekNumber(false); } this.mDatePicker.setSpinnersShown(true); hideDay = true; hideMonth = false; } else { return; } } else if ("month-year".equals(appearance)) { hideDay = true; if (Build.VERSION.SDK_INT >= 11) { this.mDatePicker.setCalendarViewShown(false); this.mDatePicker.setSpinnersShown(true); } } else if ("year".equals(appearance)) { hideMonth = true; if (Build.VERSION.SDK_INT >= 11) { this.mDatePicker.setCalendarViewShown(false); this.mDatePicker.setSpinnersShown(true); } } else if ("no-calendar".equals(appearance)) { if (Build.VERSION.SDK_INT >= 11) { this.mDatePicker.setCalendarViewShown(false); this.mDatePicker.setSpinnersShown(true); } } else { if (Build.VERSION.SDK_INT >= 11) { showCalendar = true; this.mDatePicker.setCalendarViewShown(true); if (Build.VERSION.SDK_INT >= 12) { CalendarView cv = this.mDatePicker.getCalendarView(); cv.setShowWeekNumber(false); } this.mDatePicker.setSpinnersShown(true); hideDay = true; hideMonth = false; } } if (hideMonth || hideDay) { for (Field datePickerDialogField : this.mDatePicker.getClass().getDeclaredFields()) { if ("mDayPicker".equals(datePickerDialogField.getName()) || "mDaySpinner".equals(datePickerDialogField.getName())) { datePickerDialogField.setAccessible(true); Object dayPicker = new Object(); try { dayPicker = datePickerDialogField.get(this.mDatePicker); } catch (Exception e) { e.printStackTrace(); } ((View) dayPicker).setVisibility(View.GONE); } if (hideMonth) { if ("mMonthPicker".equals(datePickerDialogField.getName()) || "mMonthSpinner".equals(datePickerDialogField.getName())) { datePickerDialogField.setAccessible(true); Object monthPicker = new Object(); try { monthPicker = datePickerDialogField.get(this.mDatePicker); } catch (Exception e) { e.printStackTrace(); } ((View) monthPicker).setVisibility(View.GONE); } } } } } private void setAnswer() { if (mPrompt.getAnswerValue() != null) { DateTime ldt = new DateTime(((Date) ((DateTimeData) mPrompt.getAnswerValue()).getValue()).getTime()); mDatePicker.init(ldt.getYear(), ldt.getMonthOfYear() - 1, ldt.getDayOfMonth(), mDateListener); mTimePicker.setCurrentHour(ldt.getHourOfDay()); mTimePicker.setCurrentMinute(ldt.getMinuteOfHour()); textofwidget.setText(String.valueOf(ldt.getDayOfMonth()) + "/" + String.valueOf(ldt.getMonthOfYear() - 1) + "/" + String.valueOf((ldt.getYear()))); } else { // create time widget with current time as of right now clearAnswer(); } } /** * Resets date to today. */ @Override public void clearAnswer() { DateTime ldt = new DateTime(); mDatePicker.init(ldt.getYear(), ldt.getMonthOfYear() - 1, ldt.getDayOfMonth(), mDateListener); mTimePicker.setCurrentHour(ldt.getHourOfDay()); mTimePicker.setCurrentMinute(ldt.getMinuteOfHour()); } @Override public IAnswerData getAnswer() { if (showCalendar) { scrollView.clearChildFocus(mDatePicker); } clearFocus(); DateTime ldt = new DateTime(mDatePicker.getYear(), mDatePicker.getMonth() + 1, mDatePicker.getDayOfMonth(), mTimePicker.getCurrentHour(), mTimePicker.getCurrentMinute(), 0); //DateTime utc = ldt.withZone(DateTimeZone.forID("UTC")); return new DateTimeData(ldt.toDate()); } @Override public void setFocus(Context context) { // Hide the soft keyboard if it's showing. InputMethodManager inputManager = (InputMethodManager) context .getSystemService(Context.INPUT_METHOD_SERVICE); inputManager.hideSoftInputFromWindow(this.getWindowToken(), 0); } @Override public void setOnLongClickListener(OnLongClickListener l) { mDatePicker.setOnLongClickListener(l); mTimePicker.setOnLongClickListener(l); } @Override public void cancelLongPress() { super.cancelLongPress(); mDatePicker.cancelLongPress(); mTimePicker.cancelLongPress(); } }