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502 lines
18 KiB
502 lines
18 KiB
/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.ui;
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import java.text.DateFormatSymbols;
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import java.util.Calendar;
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import net.micode.notes.R;
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import android.content.Context;
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import android.text.format.DateFormat;
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import android.view.View;
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import android.widget.FrameLayout;
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import android.widget.NumberPicker;
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public class DateTimePicker extends FrameLayout {
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private static final boolean DEFAULT_ENABLE_STATE = true;//默认是否启用时间选择器
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private static final int HOURS_IN_HALF_DAY = 12;//半天小时数
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private static final int HOURS_IN_ALL_DAY = 24;//一整天小时数
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private static final int DAYS_IN_ALL_WEEK = 7;//一周天数
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private static final int DATE_SPINNER_MIN_VAL = 0;
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private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1;//日期选择器的最小值和最大值；
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private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0;
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private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23;//24 小时制小时选择器的最小值和最大值；
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private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1;
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private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12;//12 小时制小时选择器的最小值和最大值；
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private static final int MINUT_SPINNER_MIN_VAL = 0;
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private static final int MINUT_SPINNER_MAX_VAL = 59;//分钟选择器的最小值和最大值；
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private static final int AMPM_SPINNER_MIN_VAL = 0;
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private static final int AMPM_SPINNER_MAX_VAL = 1;//上午/下午选择器的最小值和最大值。
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private final NumberPicker mDateSpinner;
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private final NumberPicker mHourSpinner;
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private final NumberPicker mMinuteSpinner;
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private final NumberPicker mAmPmSpinner;//日期、小时、分钟和上午/下午的数字选择器控件；
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private Calendar mDate;//当前日历日期
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private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];//日期显示值的数组
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private boolean mIsAm;//当前是否为上午
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private boolean mIs24HourView;//时间选择器是否使用 24 小时制；
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private boolean mIsEnabled = DEFAULT_ENABLE_STATE;//时间选择器是否启用；
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private boolean mInitialising;//时间选择器是否正在初始化
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private OnDateTimeChangedListener mOnDateTimeChangedListener;//时间改变监听器。
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private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
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@Override
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public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
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mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);// 数值从 0 开始，需要减 1
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updateDateControl();// 更新当前月份
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onDateTimeChanged();// 更新当前年份
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}
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};
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// 获取日历日期对应的年月日
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private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
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@Override
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public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
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boolean isDateChanged = false;
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Calendar cal = Calendar.getInstance();
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if (!mIs24HourView) {
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if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
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cal.setTimeInMillis(mDate.getTimeInMillis());
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cal.add(Calendar.DAY_OF_YEAR, 1);
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isDateChanged = true;
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} else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
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cal.setTimeInMillis(mDate.getTimeInMillis());
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cal.add(Calendar.DAY_OF_YEAR, -1);
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isDateChanged = true;
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}
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if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
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oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
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mIsAm = !mIsAm;
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updateAmPmControl();
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}
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} else {
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if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
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cal.setTimeInMillis(mDate.getTimeInMillis());
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cal.add(Calendar.DAY_OF_YEAR, 1);
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isDateChanged = true;
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} else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
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cal.setTimeInMillis(mDate.getTimeInMillis());
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cal.add(Calendar.DAY_OF_YEAR, -1);
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isDateChanged = true;
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}
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}
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int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
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mDate.set(Calendar.HOUR_OF_DAY, newHour);
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onDateTimeChanged();
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if (isDateChanged) {
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setCurrentYear(cal.get(Calendar.YEAR)); // 数值从 0 开始，需要减 1
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setCurrentMonth(cal.get(Calendar.MONTH)); // 更新当前月份
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setCurrentDay(cal.get(Calendar.DAY_OF_MONTH));// 更新当前年份
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}
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}
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};
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private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
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@Override
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public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
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int minValue = mMinuteSpinner.getMinValue();
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int maxValue = mMinuteSpinner.getMaxValue();
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int offset = 0;
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// 上一分钟为最大值且当前分钟为最小值
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if (oldVal == maxValue && newVal == minValue) {
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offset += 1;
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} else if (oldVal == minValue && newVal == maxValue) {
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offset -= 1; // 减少一小时
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}// 上一分钟为最小值且当前分钟为最大值
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if (offset != 0) {// 更新日历时间和日期控件
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mDate.add(Calendar.HOUR_OF_DAY, offset);
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mHourSpinner.setValue(getCurrentHour());
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updateDateControl();
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// 更新上午/下午选择器
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int newHour = getCurrentHourOfDay();
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if (newHour >= HOURS_IN_HALF_DAY) {
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mIsAm = false;
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updateAmPmControl();
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} else {
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mIsAm = true;
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updateAmPmControl();
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}
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}// 根据新的数值更新日历分钟，并发送时间改变事件
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mDate.set(Calendar.MINUTE, newVal);
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onDateTimeChanged();
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}
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};// 监听分钟选择器数值变化事件的回调函数
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private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
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@Override
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public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
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mIsAm = !mIsAm;// 切换上下午标识
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if (mIsAm) {
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mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
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} else {
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mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY);
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}// 根据新的标识增加或减少 12 小时
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updateAmPmControl();// 更新上午/下午选择器和时间改变事件
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onDateTimeChanged();
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}
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};// 监听上午/下午选择器数值变化事件的回调函数
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public interface OnDateTimeChangedListener {
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void onDateTimeChanged(DateTimePicker view, int year, int month,
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int dayOfMonth, int hourOfDay, int minute);
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}
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//日期时间改变监听器接口
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public DateTimePicker(Context context) {
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this(context, System.currentTimeMillis());
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}
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//调用带时间戳参数的构造函数
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public DateTimePicker(Context context, long date) {
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this(context, date, DateFormat.is24HourFormat(context));
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}//构造函数
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public DateTimePicker(Context context, long date, boolean is24HourView) {
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super(context);
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mDate = Calendar.getInstance(); // mDate = Calendar.getInstance();
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mInitialising = true; // 标识正在初始化
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mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
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inflate(context, R.layout.datetime_picker, this);// 加载布局文件
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// 查找并设置日期、小时、分钟及上午/下午选择器控件的监听器
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mDateSpinner = (NumberPicker) findViewById(R.id.date);
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mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
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mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
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mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
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mHourSpinner = (NumberPicker) findViewById(R.id.hour);
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mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
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mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
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mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
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mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
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mMinuteSpinner.setOnLongPressUpdateInterval(100); // 设置长按修改间隔时间
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mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
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String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
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mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
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mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
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mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
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mAmPmSpinner.setDisplayedValues(stringsForAmPm);
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mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
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// 更新日期、小时、上午/下午选择器控件的显示值
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updateDateControl();
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updateHourControl();
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updateAmPmControl();
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set24HourView(is24HourView);// 设置是否启用 24 小时制
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setCurrentDate(date);// 设置默认时间
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setEnabled(isEnabled());// 设置是否启用视图
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// 设置内容描述信息
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mInitialising = false;
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}
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@Override
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public void setEnabled(boolean enabled) {
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if (mIsEnabled == enabled) {
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return;
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}// 如果当前状态与要设置的状态相同，则不进行任何操作
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super.setEnabled(enabled);// 调用父类的方法设置启用状态
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// 设置各个子控件的启用状态
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mDateSpinner.setEnabled(enabled);
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mMinuteSpinner.setEnabled(enabled);
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mHourSpinner.setEnabled(enabled);
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mAmPmSpinner.setEnabled(enabled);
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mIsEnabled = enabled;// 记录当前状态
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}
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@Override
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public boolean isEnabled() {
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return mIsEnabled;
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}
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/**
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*获取当前日期的时间戳
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*@return 当前日期的时间戳
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*/
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public long getCurrentDateInTimeMillis() {
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return mDate.getTimeInMillis();
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}
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/**
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* 设置当前日期
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*
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* @param date 当前日期的时间戳
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*/
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public void setCurrentDate(long date) {
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Calendar cal = Calendar.getInstance();
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cal.setTimeInMillis(date);
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setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
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cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
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}
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/**
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* 设置当前日期
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*
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* @param year 当前年份
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* @param month 当前月份
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* @param dayOfMonth 当前日
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* @param hourOfDay 当前小时
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* @param minute 当前分钟
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*/
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public void setCurrentDate(int year, int month,
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int dayOfMonth, int hourOfDay, int minute) {
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setCurrentYear(year);
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setCurrentMonth(month);
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setCurrentDay(dayOfMonth);
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setCurrentHour(hourOfDay);
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setCurrentMinute(minute);
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}
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/**
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* 获取当前年份
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*
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* @return 当前年份
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*/
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public int getCurrentYear() {
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return mDate.get(Calendar.YEAR);
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}
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/**
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* 设置当前年份
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*
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* @param year 当前年份
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*/
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public void setCurrentYear(int year) {
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if (!mInitialising && year == getCurrentYear()) {
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return;
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}
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mDate.set(Calendar.YEAR, year);
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updateDateControl();
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onDateTimeChanged();
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}
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/**
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* 获取当前月份
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*
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* @return 当前月份
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*/
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public int getCurrentMonth() {
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return mDate.get(Calendar.MONTH);
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}
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/**
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* 设置当前月份
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*
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* @param month 当前月份
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*/
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public void setCurrentMonth(int month) {
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if (!mInitialising && month == getCurrentMonth()) {
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return;
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}
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mDate.set(Calendar.MONTH, month);
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updateDateControl();
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onDateTimeChanged();
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}
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/**
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* Get current day of the month
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*
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* @return The day of the month
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*/
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public int getCurrentDay() {
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return mDate.get(Calendar.DAY_OF_MONTH);
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}
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/**
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* Set current day of the month
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*
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* @param dayOfMonth The day of the month
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*/
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public void setCurrentDay(int dayOfMonth) {
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if (!mInitialising && dayOfMonth == getCurrentDay()) {
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return;
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}
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mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
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updateDateControl();
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onDateTimeChanged();
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}
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/**
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* Get current hour in 24 hour mode, in the range (0~23)
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* @return The current hour in 24 hour mode
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*/
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public int getCurrentHourOfDay() {
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return mDate.get(Calendar.HOUR_OF_DAY);
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}
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private int getCurrentHour() {
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if (mIs24HourView){
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return getCurrentHourOfDay();
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} else {
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int hour = getCurrentHourOfDay();
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if (hour > HOURS_IN_HALF_DAY) {
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return hour - HOURS_IN_HALF_DAY;
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} else {
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return hour == 0 ? HOURS_IN_HALF_DAY : hour;
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}
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}
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}
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/**
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* Set current hour in 24 hour mode, in the range (0~23)
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*
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* @param hourOfDay
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*/
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public void setCurrentHour(int hourOfDay) {
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if (!mInitialising && hourOfDay == getCurrentHourOfDay()) {
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return;
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}
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mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
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if (!mIs24HourView) {
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if (hourOfDay >= HOURS_IN_HALF_DAY) {
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mIsAm = false;
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if (hourOfDay > HOURS_IN_HALF_DAY) {
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hourOfDay -= HOURS_IN_HALF_DAY;
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}
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} else {
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mIsAm = true;
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if (hourOfDay == 0) {
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hourOfDay = HOURS_IN_HALF_DAY;
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}
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}
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updateAmPmControl();
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}
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mHourSpinner.setValue(hourOfDay);
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onDateTimeChanged();
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}
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/**
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* Get currentMinute
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*
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* @return The Current Minute
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*/
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public int getCurrentMinute() {
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return mDate.get(Calendar.MINUTE);
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}
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/**
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* Set current minute
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*/
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public void setCurrentMinute(int minute) {
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if (!mInitialising && minute == getCurrentMinute()) {
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return;
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}
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mMinuteSpinner.setValue(minute);
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mDate.set(Calendar.MINUTE, minute);
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onDateTimeChanged();
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}
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/**
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* @return true if this is in 24 hour view else false.
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*/
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public boolean is24HourView () {
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return mIs24HourView;
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}
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/**
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* Set whether in 24 hour or AM/PM mode.
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*
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* @param is24HourView True for 24 hour mode. False for AM/PM mode.
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*/
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public void set24HourView(boolean is24HourView) {
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if (mIs24HourView == is24HourView) {
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return;
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}
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mIs24HourView = is24HourView;
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mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
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int hour = getCurrentHourOfDay();
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updateHourControl();
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setCurrentHour(hour);
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updateAmPmControl();
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}
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/**
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* 更新日期控件
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*/
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private void updateDateControl() {
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Calendar cal = Calendar.getInstance(); // 创建一个 Calendar 对象
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cal.setTimeInMillis(mDate.getTimeInMillis()); // 将 Calendar 对象设置为指定时间
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cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1); // 将时间减去一周的天数的一半再减一天
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mDateSpinner.setDisplayedValues(null); // 清空日期选择器中的显示值
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for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) {
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cal.add(Calendar.DAY_OF_YEAR, 1);
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mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
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}
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mDateSpinner.setDisplayedValues(mDateDisplayValues); // 设置日期选择器的显示值
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mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); // 将日期选择器设置为一周的中间位置
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mDateSpinner.invalidate(); // 刷新日期选择器
|
|
}
|
|
|
|
private void updateAmPmControl() {
|
|
if (mIs24HourView) {
|
|
mAmPmSpinner.setVisibility(View.GONE);
|
|
} else {
|
|
int index = mIsAm ? Calendar.AM : Calendar.PM;
|
|
mAmPmSpinner.setValue(index);
|
|
mAmPmSpinner.setVisibility(View.VISIBLE);
|
|
}
|
|
}
|
|
/**
|
|
* 更新上下午选择控件的显示
|
|
*/
|
|
|
|
private void updateHourControl() {
|
|
if (mIs24HourView) {
|
|
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
|
|
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW);
|
|
} else {
|
|
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
|
|
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
|
|
}
|
|
}/**
|
|
* 根据是否为24小时制来更新小时选择控件的显示
|
|
*/
|
|
|
|
|
|
/**
|
|
* Set the callback that indicates the 'Set' button has been pressed.
|
|
* @param callback the callback, if null will do nothing
|
|
*/
|
|
public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
|
|
mOnDateTimeChangedListener = callback;
|
|
}
|
|
|
|
private void onDateTimeChanged() {
|
|
if (mOnDateTimeChangedListener != null) {
|
|
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
|
|
getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
|
|
}
|
|
}/**
|
|
* 当日期或时间被更改时，调用此方法以通知所有监听器
|
|
*/
|
|
|
|
}
|