From 8e3284f6400841b7f6617460d4f826bda0bfaa67 Mon Sep 17 00:00:00 2001 From: p6zpjanrb <1157949412@qq.com> Date: Wed, 27 Dec 2023 21:14:46 +0800 Subject: [PATCH] Update DateTimePicker.java --- src/net/micode/notes/ui/DateTimePicker.java | 52 +++++++++++---------- 1 file changed, 27 insertions(+), 25 deletions(-) diff --git a/src/net/micode/notes/ui/DateTimePicker.java b/src/net/micode/notes/ui/DateTimePicker.java index 5432596..7cda91e 100644 --- a/src/net/micode/notes/ui/DateTimePicker.java +++ b/src/net/micode/notes/ui/DateTimePicker.java @@ -29,8 +29,8 @@ import android.widget.FrameLayout; import android.widget.NumberPicker; public class DateTimePicker extends FrameLayout { -//FrameLayout是布局模板之一 -//所有的子元素全部在屏幕的右上方 + //FrameLayout是布局模板之一 + //所有的子元素全部在屏幕的右上方 private static final boolean DEFAULT_ENABLE_STATE = true; private static final int HOURS_IN_HALF_DAY = 12; @@ -55,7 +55,6 @@ public class DateTimePicker extends FrameLayout { //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） private Calendar mDate; //定义了Calendar类型的变量mDate，用于操作时间 - private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK]; private boolean mIsAm; @@ -79,8 +78,8 @@ public class DateTimePicker extends FrameLayout { //将现在日期的值传递给mDate；updateDateControl是同步操作 private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { - //这里是对小时（Hour） 的监听 - @Override + //这里是对 小时（Hour） 的监听 + @Override public void onValueChange(NumberPicker picker, int oldVal, int newVal) { boolean isDateChanged = false; Calendar cal = Calendar.getInstance(); @@ -90,13 +89,13 @@ public class DateTimePicker extends FrameLayout { cal.setTimeInMillis(mDate.getTimeInMillis()); cal.add(Calendar.DAY_OF_YEAR, 1); isDateChanged = true; - //这里是对于12小时制时，晚上11点和12点交替时对日期的更改 + //这里是对于12小时制时，晚上11点和12点交替时对日期的更改 } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { cal.setTimeInMillis(mDate.getTimeInMillis()); cal.add(Calendar.DAY_OF_YEAR, -1); isDateChanged = true; } - //这里是对于12小时制时，凌晨11点和12点交替时对日期的更改 + //这里是对于12小时制时，凌晨11点和12点交替时对日期的更改 if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY || oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { mIsAm = !mIsAm; @@ -107,17 +106,17 @@ public class DateTimePicker extends FrameLayout { cal.setTimeInMillis(mDate.getTimeInMillis()); cal.add(Calendar.DAY_OF_YEAR, 1); isDateChanged = true; - //这里是对于24小时制时，晚上11点和12点交替时对日期的更改 + //这里是对于24小时制时，晚上11点和12点交替时对日期的更改 } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) { cal.setTimeInMillis(mDate.getTimeInMillis()); cal.add(Calendar.DAY_OF_YEAR, -1); isDateChanged = true; } - }//这里是对于12小时制时，凌晨11点和12点交替时对日期的更改 + } //这里是对于12小时制时，凌晨11点和12点交替时对日期的更改 int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY); - //通过数字选择器对newHour的赋值 + //通过数字选择器对newHour的赋值 mDate.set(Calendar.HOUR_OF_DAY, newHour); - //通过set函数将新的Hour值传给mDate + //通过set函数将新的Hour值传给mDate onDateTimeChanged(); if (isDateChanged) { setCurrentYear(cal.get(Calendar.YEAR)); @@ -129,7 +128,7 @@ public class DateTimePicker extends FrameLayout { private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { @Override - //对分钟（Minute）改变的监听 + //这里是对 分钟（Minute）改变的监听 public void onValueChange(NumberPicker picker, int oldVal, int newVal) { int minValue = mMinuteSpinner.getMinValue(); int maxValue = mMinuteSpinner.getMaxValue(); @@ -140,7 +139,7 @@ public class DateTimePicker extends FrameLayout { } else if (oldVal == minValue && newVal == maxValue) { offset -= 1; } - //如果原值为59，新值为0，则offset加1 + //如果原值为59，新值为0，则offset加1 //如果原值为0，新值为59，则offset减1 if (offset != 0) { mDate.add(Calendar.HOUR_OF_DAY, offset); @@ -161,7 +160,7 @@ public class DateTimePicker extends FrameLayout { }; private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { - //对AM和PM的监听 + //对AM和PM的监听 @Override public void onValueChange(NumberPicker picker, int oldVal, int newVal) { mIsAm = !mIsAm; @@ -177,7 +176,7 @@ public class DateTimePicker extends FrameLayout { public interface OnDateTimeChangedListener { void onDateTimeChanged(DateTimePicker view, int year, int month, - int dayOfMonth, int hourOfDay, int minute); + int dayOfMonth, int hourOfDay, int minute); } public DateTimePicker(Context context) { @@ -205,7 +204,7 @@ public class DateTimePicker extends FrameLayout { mHourSpinner = (NumberPicker) findViewById(R.id.hour); mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); - mMinuteSpinner = (NumberPicker) findViewById(R.id.minute); + mMinuteSpinner = (NumberPicker) findViewById(R.id.minute); mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL); mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL); mMinuteSpinner.setOnLongPressUpdateInterval(100); @@ -246,7 +245,9 @@ public class DateTimePicker extends FrameLayout { mAmPmSpinner.setEnabled(enabled); mIsEnabled = enabled; } - + //存在疑问！！！！！！！！！！！！！setEnabled的作用 + //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 + //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 @Override public boolean isEnabled() { return mIsEnabled; @@ -259,7 +260,7 @@ public class DateTimePicker extends FrameLayout { */ public long getCurrentDateInTimeMillis() { return mDate.getTimeInMillis(); - } + }//实现函数——得到当前的秒数 /** * Set the current date @@ -271,7 +272,7 @@ public class DateTimePicker extends FrameLayout { cal.setTimeInMillis(date); setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE)); - } + }//实现函数功能——设置当前的时间，参数是date /** * Set the current date @@ -283,7 +284,7 @@ public class DateTimePicker extends FrameLayout { * @param minute The current minute */ public void setCurrentDate(int year, int month, - int dayOfMonth, int hourOfDay, int minute) { + int dayOfMonth, int hourOfDay, int minute) { setCurrentYear(year); setCurrentMonth(month); setCurrentDay(dayOfMonth); @@ -296,6 +297,7 @@ public class DateTimePicker extends FrameLayout { * * @return The current year */ + //下面是得到year、month、day等值 public int getCurrentYear() { return mDate.get(Calendar.YEAR); } @@ -452,7 +454,7 @@ public class DateTimePicker extends FrameLayout { updateHourControl(); setCurrentHour(hour); updateAmPmControl(); - }//对于星期几的算法 + } private void updateDateControl() { Calendar cal = Calendar.getInstance(); @@ -466,7 +468,7 @@ public class DateTimePicker extends FrameLayout { mDateSpinner.setDisplayedValues(mDateDisplayValues); mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); mDateSpinner.invalidate(); - }//对于上下午操作的算法 + }// 对于星期几的算法 private void updateAmPmControl() { if (mIs24HourView) { @@ -475,7 +477,7 @@ public class DateTimePicker extends FrameLayout { int index = mIsAm ? Calendar.AM : Calendar.PM; mAmPmSpinner.setValue(index); mAmPmSpinner.setVisibility(View.VISIBLE); - } + }// 对于上下午操作的算法 } private void updateHourControl() { @@ -485,7 +487,7 @@ public class DateTimePicker extends FrameLayout { } else { mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); - } + }// 对与小时的算法 } /** @@ -502,4 +504,4 @@ public class DateTimePicker extends FrameLayout { getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute()); } } -} +} \ No newline at end of file