diff --git a/src/Notes-master/src/net/micode/notes/ui/DateTimePicker.java b/src/Notes-master/src/net/micode/notes/ui/DateTimePicker.java
index 496b0cd..e808632 100644
--- a/src/Notes-master/src/net/micode/notes/ui/DateTimePicker.java
+++ b/src/Notes-master/src/net/micode/notes/ui/DateTimePicker.java
@@ -30,22 +30,35 @@ import android.widget.NumberPicker;
 
 public class DateTimePicker extends FrameLayout {
 
+    // 默认启用状态
     private static final boolean DEFAULT_ENABLE_STATE = true;
 
+    // 一半天的小时数
     private static final int HOURS_IN_HALF_DAY = 12;
+    // 一天的小时数
     private static final int HOURS_IN_ALL_DAY = 24;
+    // 一周的天数
     private static final int DAYS_IN_ALL_WEEK = 7;
+    // 日期选择器的最小值
     private static final int DATE_SPINNER_MIN_VAL = 0;
+    // 日期选择器的最大值
     private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1;
+    // 24小时制时钟的小时选择器的最小值
     private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0;
+    // 24小时制时钟的小时选择器的最大值
     private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23;
+    // 12小时制时钟的小时选择器的最小值
     private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1;
+    // 12小时制时钟的小时选择器的最大值
     private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12;
+    // 分钟选择器的最小值
     private static final int MINUT_SPINNER_MIN_VAL = 0;
+    // 分钟选择器的最大值
     private static final int MINUT_SPINNER_MAX_VAL = 59;
+    // 上午/下午选择器的最小值
     private static final int AMPM_SPINNER_MIN_VAL = 0;
+    // 上午/下午选择器的最大值
     private static final int AMPM_SPINNER_MAX_VAL = 1;
-
     private final NumberPicker mDateSpinner;
     private final NumberPicker mHourSpinner;
     private final NumberPicker mMinuteSpinner;