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@ -21,20 +21,28 @@ 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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* DateTimePicker 类用于创建日期和时间选择器。
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*/
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public class DateTimePicker extends FrameLayout {
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// 默认使能状态
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private static final boolean DEFAULT_ENABLE_STATE = true;
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// 12小时制和24小时制的小时数
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private static final int HOURS_IN_HALF_DAY = 12;
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private static final int HOURS_IN_ALL_DAY = 24;
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// 一周的天数
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private static final int DAYS_IN_ALL_WEEK = 7;
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// 日期和时间选择器的最小和最大值
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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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@ -46,36 +54,51 @@ public class DateTimePicker extends FrameLayout {
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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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// 日期选择器
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private final NumberPicker mDateSpinner;
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// 小时选择器
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private final NumberPicker mHourSpinner;
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// 分钟选择器
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private final NumberPicker mMinuteSpinner;
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// AM/PM选择器
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private final NumberPicker mAmPmSpinner;
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// 当前日期
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private Calendar mDate;
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// 日期显示值
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private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
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// 是否为上午
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private boolean mIsAm;
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// 是否为24小时制
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private boolean mIs24HourView;
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// 是否使能
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private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
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// 初始化标志
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private boolean mInitialising;
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// 日期时间改变监听器
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private OnDateTimeChangedListener mOnDateTimeChangedListener;
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// 日期改变监听器
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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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// 更新日期
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mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
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updateDateControl();
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onDateTimeChanged();
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}
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};
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// 小时改变监听器
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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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// 更新小时
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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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@ -115,9 +138,11 @@ public class DateTimePicker extends FrameLayout {
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}
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};
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// 分钟改变监听器
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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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// 更新分钟
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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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@ -144,9 +169,11 @@ public class DateTimePicker extends FrameLayout {
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}
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};
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// AM/PM改变监听器
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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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// 更新AM/PM
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mIsAm = !mIsAm;
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if (mIsAm) {
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mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
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@ -158,19 +185,37 @@ public class DateTimePicker extends FrameLayout {
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}
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};
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/**
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* 日期时间改变监听器接口。
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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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/**
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* 构造函数。
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* @param context 上下文
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*/
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public DateTimePicker(Context context) {
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this(context, System.currentTimeMillis());
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}
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/**
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* 构造函数。
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* @param context 上下文
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* @param date 当前日期
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*/
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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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/**
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* 构造函数。
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* @param context 上下文
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* @param date 当前日期
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* @param is24HourView 是否为24小时制
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*/
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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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@ -191,6 +236,7 @@ public class DateTimePicker extends FrameLayout {
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mMinuteSpinner.setOnLongPressUpdateInterval(100);
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mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
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// AM/PM选择器的字符串数组
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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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@ -198,22 +244,28 @@ public class DateTimePicker extends FrameLayout {
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mAmPmSpinner.setDisplayedValues(stringsForAmPm);
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mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
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// update controls to initial state
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// 更新控件到初始状态
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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
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set24HourView(is24HourView);
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// set to current time
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// 设置当前日期
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setCurrentDate(date);
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// 设置使能状态
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setEnabled(isEnabled());
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// set the content descriptions
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// 设置内容描述
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mInitialising = false;
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}
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/**
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* 设置使能状态。
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* @param enabled 是否使能
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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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@ -227,24 +279,26 @@ public class DateTimePicker extends FrameLayout {
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mIsEnabled = enabled;
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}
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/**
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* 获取使能状态。
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* @return 是否使能
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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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* Get the current date in millis
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*
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* @return the current date in millis
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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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* Set the current date
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*
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* @param date The current date in millis
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* 设置当前日期。
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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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@ -254,13 +308,12 @@ public class DateTimePicker extends FrameLayout {
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}
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/**
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* Set the current date
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*
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* @param year The current year
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* @param month The current month
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* @param dayOfMonth The current dayOfMonth
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* @param hourOfDay The current hourOfDay
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* @param minute The current minute
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* 设置当前日期。
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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 当前日期
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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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@ -272,18 +325,16 @@ public class DateTimePicker extends FrameLayout {
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}
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/**
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* Get current year
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*
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* @return The current year
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* 获取当前年份。
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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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* Set current year
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*
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* @param year The current year
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* 设置当前年份。
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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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@ -295,18 +346,16 @@ public class DateTimePicker extends FrameLayout {
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}
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/**
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* Get current month in the year
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*
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* @return The current month in the year
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* 获取当前月份。
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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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* Set current month in the year
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*
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* @param month The month in the year
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* 设置当前月份。
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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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@ -318,18 +367,16 @@ public class DateTimePicker extends FrameLayout {
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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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* 获取当前日期。
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* @return 当前日期
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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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* 设置当前日期。
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* @param dayOfMonth 当前日期
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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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@ -341,15 +388,19 @@ public class DateTimePicker extends FrameLayout {
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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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* 获取当前小时（24小时制）。
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* @return 当前小时（24小时制）
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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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/**
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* 获取当前小时（12小时制或24小时制）。
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* @return 当前小时
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*/
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private int getCurrentHour() {
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if (mIs24HourView){
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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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@ -362,9 +413,8 @@ public class DateTimePicker extends FrameLayout {
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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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* 设置当前小时（24小时制）。
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* @param hourOfDay 当前小时（24小时制）
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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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@ -390,16 +440,16 @@ public class DateTimePicker extends FrameLayout {
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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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* 获取当前分钟。
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* @return 当前分钟
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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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* 设置当前分钟。
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* @param minute 当前分钟
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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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@ -411,16 +461,16 @@ public class DateTimePicker extends FrameLayout {
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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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* 获取是否为24小时制。
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* @return 是否为24小时制
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*/
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public boolean is24HourView () {
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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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* 设置是否为24小时制。
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* @param is24HourView 是否为24小时制
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*/
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public void set24HourView(boolean is24HourView) {
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if (mIs24HourView == is24HourView) {
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@ -434,6 +484,9 @@ public class DateTimePicker extends FrameLayout {
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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();
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cal.setTimeInMillis(mDate.getTimeInMillis());
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@ -448,6 +501,9 @@ public class DateTimePicker extends FrameLayout {
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mDateSpinner.invalidate();
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}
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/**
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* 更新AM/PM控件。
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*/
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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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@ -458,6 +514,9 @@ public class DateTimePicker extends FrameLayout {
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}
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}
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/**
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* 更新小时控件。
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*/
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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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@ -469,13 +528,16 @@ public class DateTimePicker extends FrameLayout {
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}
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/**
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* Set the callback that indicates the 'Set' button has been pressed.
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* @param callback the callback, if null will do nothing
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* 设置日期时间改变监听器。
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* @param callback 日期时间改变监听器
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*/
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public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
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mOnDateTimeChangedListener = callback;
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}
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/**
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* 通知日期时间改变。
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*/
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private void onDateTimeChanged() {
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if (mOnDateTimeChangedListener != null) {
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mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
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