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@ -55,7 +55,6 @@ public class DateTimePicker extends FrameLayout {
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//这里定义的四个变量全部是在设置闹钟时需要选择的变量(如日期、时、分、上午或者下午)
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//这里定义的四个变量全部是在设置闹钟时需要选择的变量(如日期、时、分、上午或者下午)
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private Calendar mDate;
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private Calendar mDate;
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//定义了Calendar类型的变量mDate,用于操作时间
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//定义了Calendar类型的变量mDate,用于操作时间
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private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
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private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
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private boolean mIsAm;
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private boolean mIsAm;
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@ -129,7 +128,7 @@ public class DateTimePicker extends FrameLayout {
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private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
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private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
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@Override
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@Override
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//对分钟(Minute)改变的监听
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//这里是对 分钟(Minute)改变的监听
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public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
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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 minValue = mMinuteSpinner.getMinValue();
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int maxValue = mMinuteSpinner.getMaxValue();
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int maxValue = mMinuteSpinner.getMaxValue();
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@ -246,7 +245,9 @@ public class DateTimePicker extends FrameLayout {
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mAmPmSpinner.setEnabled(enabled);
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mAmPmSpinner.setEnabled(enabled);
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mIsEnabled = enabled;
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mIsEnabled = enabled;
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}
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}
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//存在疑问!!!!!!!!!!!!!setEnabled的作用
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//下面的代码通过原程序的注释已经比较清晰,另外可以通过函数名来判断
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//下面的各函数主要是对上面代码引用到的各函数功能的实现
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@Override
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@Override
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public boolean isEnabled() {
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public boolean isEnabled() {
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return mIsEnabled;
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return mIsEnabled;
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@ -259,7 +260,7 @@ public class DateTimePicker extends FrameLayout {
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*/
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*/
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public long getCurrentDateInTimeMillis() {
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public long getCurrentDateInTimeMillis() {
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return mDate.getTimeInMillis();
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return mDate.getTimeInMillis();
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}
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}//实现函数——得到当前的秒数
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/**
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/**
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* Set the current date
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* Set the current date
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@ -271,7 +272,7 @@ public class DateTimePicker extends FrameLayout {
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cal.setTimeInMillis(date);
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cal.setTimeInMillis(date);
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setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
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setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
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cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
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cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
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}
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}//实现函数功能——设置当前的时间,参数是date
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/**
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/**
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* Set the current date
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* Set the current date
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@ -296,6 +297,7 @@ public class DateTimePicker extends FrameLayout {
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*
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*
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* @return The current year
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* @return The current year
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*/
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*/
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//下面是得到year、month、day等值
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public int getCurrentYear() {
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public int getCurrentYear() {
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return mDate.get(Calendar.YEAR);
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return mDate.get(Calendar.YEAR);
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}
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}
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@ -452,7 +454,7 @@ public class DateTimePicker extends FrameLayout {
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updateHourControl();
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updateHourControl();
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setCurrentHour(hour);
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setCurrentHour(hour);
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updateAmPmControl();
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updateAmPmControl();
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}//对于星期几的算法
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}
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private void updateDateControl() {
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private void updateDateControl() {
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Calendar cal = Calendar.getInstance();
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Calendar cal = Calendar.getInstance();
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@ -466,7 +468,7 @@ public class DateTimePicker extends FrameLayout {
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mDateSpinner.setDisplayedValues(mDateDisplayValues);
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mDateSpinner.setDisplayedValues(mDateDisplayValues);
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mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
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mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
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mDateSpinner.invalidate();
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mDateSpinner.invalidate();
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}//对于上下午操作的算法
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}// 对于星期几的算法
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private void updateAmPmControl() {
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private void updateAmPmControl() {
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if (mIs24HourView) {
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if (mIs24HourView) {
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@ -475,7 +477,7 @@ public class DateTimePicker extends FrameLayout {
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int index = mIsAm ? Calendar.AM : Calendar.PM;
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int index = mIsAm ? Calendar.AM : Calendar.PM;
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mAmPmSpinner.setValue(index);
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mAmPmSpinner.setValue(index);
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mAmPmSpinner.setVisibility(View.VISIBLE);
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mAmPmSpinner.setVisibility(View.VISIBLE);
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}
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}// 对于上下午操作的算法
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}
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}
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private void updateHourControl() {
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private void updateHourControl() {
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@ -485,7 +487,7 @@ public class DateTimePicker extends FrameLayout {
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} else {
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} else {
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mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
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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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mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
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}
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}// 对与小时的算法
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}
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}
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/**
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/**
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