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/*
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* 版权声明:MiCode开源社区版权所有
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* 遵循Apache 2.0开源协议
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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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/**
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* 自定义日期时间选择器控件
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* 功能:提供日期(周视图)、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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// 时间常量
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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; // 全天小时数
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private static final int DAYS_IN_ALL_WEEK = 7; // 一周天数
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// 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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// UI组件
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private final NumberPicker mDateSpinner; // 日期选择器(显示周视图)
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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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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]; // 日期显示文本
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// 状态标志
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private boolean mIsAm; // 是否为上午
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private boolean mIs24HourView; // 是否24小时制
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private boolean mIsEnabled; // 控件是否启用
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private boolean mInitialising; // 是否正在初始化
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private OnDateTimeChangedListener mOnDateTimeChangedListener; // 时间变更监听器
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// 日期变更监听器
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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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// 计算日期偏移量(新位置 - 旧位置)
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mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
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updateDateControl(); // 更新日期控件显示
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onDateTimeChanged(); // 触发变更事件
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}
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};
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// 小时变更监听器(处理12/24小时制转换)
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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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// 12小时制特殊处理
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if (!mIs24HourView) {
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// 处理跨天边界情况(PM 11->12)
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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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// 处理跨天边界情况(AM 12->11)
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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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// 处理AM/PM切换(12<->1)
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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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// 24小时制处理
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else {
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// 处理跨天边界(23->0)
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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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// 处理跨天边界(0->23)
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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(12小时制转换)
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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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// 处理日期变更
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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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// 分钟变更监听器(处理59->00和00->59的边界情况)
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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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// 处理分钟滚动边界(59->00 表示增加1小时)
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if (oldVal == maxValue && newVal == minValue) {
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offset += 1;
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}
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// 处理分钟滚动边界(00->59 表示减少1小时)
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else if (oldVal == minValue && newVal == maxValue) {
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offset -= 1;
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}
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// 处理小时变更
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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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// 更新AM/PM状态
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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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// 设置新分钟值
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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变更监听器
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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(); // 更新AM/PM控件
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onDateTimeChanged(); // 触发变更事件
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}
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};
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/** 日期时间变更监听接口 */
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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; // 标记初始化开始
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// 根据当前时间设置初始AM/PM状态
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mIsAm = (mDate.get(Calendar.HOUR_OF_DAY) < 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); // 长按快速更新间隔
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mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
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// 初始化AM/PM选择器
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String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings(); // 获取本地化AM/PM文本
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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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// 初始化控件状态
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updateDateControl(); // 更新日期显示
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updateHourControl(); // 设置小时范围
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updateAmPmControl(); // 设置AM/PM状态
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// 设置时间显示格式
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set24HourView(is24HourView);
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// 设置初始时间
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setCurrentDate(date);
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// 设置启用状态
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setEnabled(DEFAULT_ENABLE_STATE);
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mInitialising = false; // 标记初始化完成
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}
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/** 设置控件启用状态 */
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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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// 设置子控件状态
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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;
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}
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/** 获取控件启用状态 */
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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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/** 获取当前时间(毫秒时间戳) */
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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(毫秒时间戳) */
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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(各字段参数) */
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public void setCurrentDate(int year, int month, 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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/** 获取当前年份 */
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public int getCurrentYear() {
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return mDate.get(Calendar.YEAR);
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}
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/** 设置当前年份 */
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public void setCurrentYear(int year) {
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// 避免初始化阶段和值未变化时的重复操作
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if (!mInitialising && year == getCurrentYear()) return;
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mDate.set(Calendar.YEAR, year);
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updateDateControl(); // 更新日期显示(年份变化可能影响周视图)
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onDateTimeChanged(); // 触发变更事件
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}
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/** 获取当前月份(0-11) */
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public int getCurrentMonth() {
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return mDate.get(Calendar.MONTH);
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}
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/** 设置当前月份 */
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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(); // 更新日期显示
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onDateTimeChanged();
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}
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/** 获取当前日期(月中的天数) */
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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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/** 设置当前日期 */
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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(); // 更新日期显示
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onDateTimeChanged();
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}
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/** 获取24小时制的小时(0-23) */
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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值(根据12/24小时制转换) */
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private int getCurrentHour() {
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if (mIs24HourView){
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return getCurrentHourOfDay(); // 24小时制直接返回
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} else {
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int hour = getCurrentHourOfDay();
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// 转换为12小时制显示
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if (hour > HOURS_IN_HALF_DAY) {
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return hour - HOURS_IN_HALF_DAY; // PM时间:13-23 -> 1-11
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} else {
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return hour == 0 ? HOURS_IN_HALF_DAY : hour; // 0点显示为12
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}
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}
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}
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/** 设置24小时制的小时 */
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public void setCurrentHour(int hourOfDay) {
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// 避免重复设置
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if (!mInitialising && hourOfDay == getCurrentHourOfDay()) return;
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mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
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// 12小时制需要额外处理AM/PM状态
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if (!mIs24HourView) {
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if (hourOfDay >= HOURS_IN_HALF_DAY) { // PM时间
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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; // 转换为12小时制显示
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}
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} else { // AM时间
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mIsAm = true;
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if (hourOfDay == 0) {
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hourOfDay = HOURS_IN_HALF_DAY; // 0点显示为12
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}
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}
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updateAmPmControl(); // 更新AM/PM控件
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}
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mHourSpinner.setValue(hourOfDay); // 设置选择器值
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onDateTimeChanged();
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}
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/** 获取当前分钟 */
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public int getCurrentMinute() {
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return mDate.get(Calendar.MINUTE);
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}
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/** 设置当前分钟 */
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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); // 设置选择器值
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mDate.set(Calendar.MINUTE, minute);
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onDateTimeChanged();
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}
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/** 是否24小时制 */
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public boolean is24HourView() {
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return mIs24HourView;
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}
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/** 设置12/24小时制显示模式 */
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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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// 显示/隐藏AM/PM选择器
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mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
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int hour = getCurrentHourOfDay();
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updateHourControl(); // 更新小时选择器范围
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setCurrentHour(hour); // 重置小时显示
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updateAmPmControl(); // 更新AM/PM状态
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}
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/** 更新日期控件(周视图) */
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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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// 设置初始日期(当前日期前3天)
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cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1);
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mDateSpinner.setDisplayedValues(null); // 清除旧值
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// 生成未来一周的日期显示文本
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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:"月.日 星期几"
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mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
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}
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mDateSpinner.setDisplayedValues(mDateDisplayValues); // 设置显示文本
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mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); // 设置中间位置为当前日期
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mDateSpinner.invalidate(); // 刷新控件
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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); // 24小时制隐藏
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} else {
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int index = mIsAm ? Calendar.AM : Calendar.PM;
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mAmPmSpinner.setValue(index); // 设置当前值
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mAmPmSpinner.setVisibility(View.VISIBLE); // 显示控件
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}
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}
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/** 更新小时控件范围(根据12/24小时制) */
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private void updateHourControl() {
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if (mIs24HourView) {
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// 24小时制:0-23
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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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// 12小时制:1-12
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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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/** 设置日期时间变更监听器 */
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public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
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mOnDateTimeChangedListener = callback;
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}
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/** 触发日期时间变更事件 */
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private void onDateTimeChanged() {
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if (mOnDateTimeChangedListener != null) {
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mOnDateTimeChangedListener.onDateTimeChanged(
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this,
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getCurrentYear(),
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getCurrentMonth(),
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getCurrentDay(),
|
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getCurrentHourOfDay(),
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getCurrentMinute()
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);
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}
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}
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}
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