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/*
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* 版权所有 (c) 2010-2011，MiCode 开源社区 (www.micode.net)
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* 根据 Apache 许可证 2.0 版本（"许可证"）授权；
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* 除非符合许可证的规定，否则不得使用本文件。
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* 您可以从以下网址获取许可证副本：
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* http://www.apache.org/licenses/LICENSE-2.0
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* 除非适用法律要求或书面同意，本软件按"原样"分发，
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* 没有任何明示或暗示的保证或条件。
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* 详见许可证中规定的权限和限制。
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* （注：这是一份标准的Apache许可证2.0版本的开源声明）
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*/
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// 定义包路径
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package net.micode.notes.ui;
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// 导入Java工具类
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import java.text.DateFormatSymbols; // 用于获取AM/PM本地化字符串
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import java.util.Calendar; // 日期时间处理类
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// 导入项目资源
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import net.micode.notes.R; // 资源ID引用
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// 导入Android相关类
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import android.content.Context; // 上下文对象
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import android.text.format.DateFormat; // 日期格式化工具
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import android.view.View; // 基础视图类
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import android.widget.FrameLayout; // 帧布局容器
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import android.widget.NumberPicker;// 数字选择器控件
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/**
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* 自定义日期时间选择器组件
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* 包含日期、小时、分钟和AM/PM选择器
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*/
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public class DateTimePicker extends FrameLayout {
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// 默认启用状态
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private static final boolean DEFAULT_ENABLE_STATE = true;
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// 时间相关常量
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private static final int HOURS_IN_HALF_DAY = 12; // 半天的12小时
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private static final int HOURS_IN_ALL_DAY = 24; // 全天24小时
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private static final int DAYS_IN_ALL_WEEK = 7; // 一周7天
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// 数字选择器范围常量
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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;
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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;
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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;
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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;
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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;
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// 控件成员变量
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private final NumberPicker mDateSpinner; // 日期选择器
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private final NumberPicker mHourSpinner; // 小时选择器
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private final NumberPicker mMinuteSpinner;// 分钟选择器
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private final NumberPicker mAmPmSpinner; // AM/PM选择器
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// 状态变量
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private Calendar mDate; // 当前选择的日期时间
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private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK]; // 日期显示值数组
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private boolean mIsAm; // 是否为上午
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private boolean mIs24HourView; // 是否为24小时制
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private boolean mIsEnabled = DEFAULT_ENABLE_STATE; // 是否启用
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private boolean mInitialising; // 是否正在初始化
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// 回调接口
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private OnDateTimeChangedListener mOnDateTimeChangedListener;
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// 日期变化监听器
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private NumberPicker.OnValueChangeListener mOnDateChangedListener =
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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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// 计算日期差值并更新日历
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mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
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updateDateControl(); // 更新日期显示
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onDateTimeChanged(); // 触发回调
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}
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};
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// 小时变化监听器（处理12/24小时制的复杂逻辑）
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private NumberPicker.OnValueChangeListener mOnHourChangedListener =
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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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// 处理12小时制下的日期变更
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if (!mIs24HourView) {
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// 从PM到AM跨日情况
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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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}
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// 从AM到PM跨日情况
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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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// AM/PM切换点检查
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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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}
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// 处理24小时制下的日期变更
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else {
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// 23点转到0点（次日）
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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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}
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// 0点转到23点（前一天）
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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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// 更新实际小时值（考虑AM/PM）
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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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// 处理需要变更日期的情况
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if (isDateChanged) {
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setCurrentYear(cal.get(Calendar.YEAR));
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setCurrentMonth(cal.get(Calendar.MONTH));
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setCurrentDay(cal.get(Calendar.DAY_OF_MONTH));
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}
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}
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};
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// 分钟变化监听器（处理59->00和00->59的边界情况）
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private NumberPicker.OnValueChangeListener mOnMinuteChangedListener =
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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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// 处理分钟循环滚动情况
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if (oldVal == maxValue && newVal == minValue) {
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offset += 1; // 下一小时
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} else if (oldVal == minValue && newVal == maxValue) {
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offset -= 1; // 上一小时
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}
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if (offset != 0) {
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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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// 处理AM/PM切换
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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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}
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mDate.set(Calendar.MINUTE, newVal);
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onDateTimeChanged();
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}
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};
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// AM/PM变化监听器
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private NumberPicker.OnValueChangeListener mOnAmPmChangedListener =
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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AM/PM状态
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// 调整12小时
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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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}
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updateAmPmControl();
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onDateTimeChanged();
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}
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};
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/**
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* 日期时间变化回调接口
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*/
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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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// 构造函数（使用当前时间）
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public DateTimePicker(Context context) {
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this(context, System.currentTimeMillis());
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}
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// 构造函数（指定时间戳）
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public DateTimePicker(Context context, long date) {
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this(context, date, DateFormat.is24HourFormat(context));
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}
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// 主构造函数
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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();
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mInitialising = true;
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mIsAm = (getCurrentHourOfDay() < HOURS_IN_HALF_DAY);
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// 加载布局
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inflate(context, R.layout.datetime_picker, this);
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// 初始化日期选择器
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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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// 初始化小时选择器
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mHourSpinner = (NumberPicker) findViewById(R.id.hour);
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mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
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// 初始化分钟选择器
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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); // 长按加速间隔
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mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
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// 初始化AM/PM选择器（使用本地化字符串）
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String[] ampmStrings = 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(ampmStrings);
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mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
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// 初始化控件状态
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updateDateControl();
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updateHourControl();
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updateAmPmControl();
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// 设置24小时制模式
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set24HourView(is24HourView);
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// 设置当前时间
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setCurrentDate(date);
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// 设置初始启用状态
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setEnabled(DEFAULT_ENABLE_STATE);
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// 初始化完成
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mInitialising = false;
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}
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// 启用/禁用控件
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@Override
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public void setEnabled(boolean enabled) {
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if (mIsEnabled == enabled) return;
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super.setEnabled(enabled);
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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;
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}
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// 获取当前时间戳
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public long getCurrentDateInTimeMillis() {
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return mDate.getTimeInMillis();
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}
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// 设置当前时间（时间戳）
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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(
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cal.get(Calendar.YEAR),
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cal.get(Calendar.MONTH),
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cal.get(Calendar.DAY_OF_MONTH),
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cal.get(Calendar.HOUR_OF_DAY),
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cal.get(Calendar.MINUTE)
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);
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}
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// 设置当前时间（各部分）
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public void setCurrentDate(int year, int month, int dayOfMonth,
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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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// 获取/设置年份
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public int getCurrentYear() { return mDate.get(Calendar.YEAR); }
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public void setCurrentYear(int year) {
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if (!mInitialising && year == getCurrentYear()) return;
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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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// 获取/设置月份
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public int getCurrentMonth() { return mDate.get(Calendar.MONTH); }
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public void setCurrentMonth(int month) {
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if (!mInitialising && month == getCurrentMonth()) return;
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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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// 获取/设置日
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public int getCurrentDay() { return mDate.get(Calendar.DAY_OF_MONTH); }
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public void setCurrentDay(int dayOfMonth) {
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if (!mInitialising && dayOfMonth == getCurrentDay()) return;
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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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// 获取24小时制小时
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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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// 获取当前显示的小时（考虑12/24小时制）
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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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// 设置小时
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public void setCurrentHour(int hourOfDay) {
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if (!mInitialising && hourOfDay == getCurrentHourOfDay()) return;
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mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
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if (!mIs24HourView) {
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// 处理12小时制下的AM/PM状态
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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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// 获取/设置分钟
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public int getCurrentMinute() { return mDate.get(Calendar.MINUTE); }
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public void setCurrentMinute(int minute) {
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if (!mInitialising && minute == getCurrentMinute()) return;
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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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// 获取/设置24小时制模式
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public boolean is24HourView() { return mIs24HourView; }
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public void set24HourView(boolean is24HourView) {
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if (mIs24HourView == is24HourView) return;
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mIs24HourView = is24HourView;
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// 更新AM/PM选择器可见性
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mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
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// 更新小时选择器范围
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updateHourControl();
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// 设置当前小时（保持实际时间不变）
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setCurrentHour(getCurrentHourOfDay());
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// 更新AM/PM显示
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updateAmPmControl();
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}
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// 更新日期控件显示值（一周日期范围）
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private void updateDateControl() {
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Calendar cal = Calendar.getInstance();
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cal.setTimeInMillis(mDate.getTimeInMillis());
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cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1);
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mDateSpinner.setDisplayedValues(null);
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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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// 格式化日期为"MM.dd EEEE"格式（如"07.15 星期一"）
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mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
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}
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mDateSpinner.setDisplayedValues(mDateDisplayValues);
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mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); // 中间值（当前日）
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mDateSpinner.invalidate(); // 强制重绘
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}
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// 更新AM/PM控件状态
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private void updateAmPmControl() {
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if (mIs24HourView) {
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mAmPmSpinner.setVisibility(View.GONE);
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} else {
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int index = mIsAm ? Calendar.AM : Calendar.PM;
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mAmPmSpinner.setValue(index);
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mAmPmSpinner.setVisibility(View.VISIBLE);
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}
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}
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// 更新小时控件范围（12/24小时制）
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private void updateHourControl() {
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if (mIs24HourView) {
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mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
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mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW);
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} else {
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mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
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mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
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}
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}
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// 设置日期时间变化监听器
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public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
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mOnDateTimeChangedListener = callback;
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}
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// 触发日期时间变化回调
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private void onDateTimeChanged() {
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if (mOnDateTimeChangedListener != null) {
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mOnDateTimeChangedListener.onDateTimeChanged(this,
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getCurrentYear(), getCurrentMonth(), getCurrentDay(),
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getCurrentHourOfDay(), getCurrentMinute());
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}
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}
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}
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