diff --git a/uml/UML.puml b/uml/UML.puml
deleted file mode 100644
index c70276d..0000000
--- a/uml/UML.puml
+++ /dev/null
@@ -1,337 +0,0 @@
-@startuml
-class cc.liuyx.note.alarm.PlanDatabase {
-+ {static} String TABLE_NAME
-+ {static} String TITLE
-+ {static} String CONTENT
-+ {static} String ID
-+ {static} String TIME
-+ {static} String MODE
-+ void onCreate(SQLiteDatabase)
-+ void onUpgrade(SQLiteDatabase,int,int)
-}
-abstract class cc.liuyx.note.BaseActivity {
-+ String TAG
-+ String ACTION
-# BroadcastReceiver receiver
-# IntentFilter filter
-# void onCreate(Bundle)
-+ boolean isNightMode()
-+ void setNightMode()
-# {abstract}void needRefresh()
-+ void onDestroy()
-+ long calStrToSec(String)
-}
-class cc.liuyx.note.entity.Note {
-- long id
-- String content
-- String time
-- int tag
-+ long getId()
-+ String getContent()
-+ String getTime()
-+ void setId(long)
-+ void setContent(String)
-+ void setTime(String)
-+ String toString()
-+ int getTag()
-+ void setTag(int)
-}
-class cc.liuyx.note.alarm.PlanAdapter {
-- Context mContext
-- List<Plan> backList
-- List<Plan> planList
-~ PlanAdapter.MyFilter mFilter
-+ int getCount()
-+ Object getItem(int)
-+ long getItemId(int)
-+ View getView(int,View,ViewGroup)
-+ Filter getFilter()
-}
-class cc.liuyx.note.alarm.PlanAdapter$MyFilter {
-# FilterResults performFiltering(CharSequence)
-# void publishResults(CharSequence,FilterResults)
-}
-class cc.liuyx.note.db.CRUD {
-~ SQLiteOpenHelper dbHandler
-~ SQLiteDatabase db
-- {static} String[] columns
-+ void open()
-+ void close()
-+ void addNote(Note)
-+ Note getNote(long)
-+ List<Note> getAllNotes()
-+ void updateNote(Note)
-+ void removeNote(Note)
-}
-class cc.liuyx.note.adapter.NoteAdapter {
-- Context mContext
-- List<Note> backList
-- List<Note> noteList
-- MyFilter mFilter
-+ int getCount()
-+ Object getItem(int)
-+ long getItemId(int)
-+ View getView(int,View,ViewGroup)
-+ Filter getFilter()
-}
-class cc.liuyx.note.adapter.NoteAdapter$MyFilter {
-# FilterResults performFiltering(CharSequence)
-# void publishResults(CharSequence,FilterResults)
-}
-class cc.liuyx.note.FabColorActivity {
-- Toolbar myToolbar
-- int openMode
-- SharedPreferences sharedPreferences
-- ImageView q
-# void onCreate(Bundle)
-- void initImageView()
-- void chooseCurFabColor(int)
-- void setClick()
-+ void onClick(View)
-+ boolean onKeyDown(int,KeyEvent)
-}
-class com.example.atry.ExampleInstrumentedTest {
-+ void useAppContext()
-}
-class cc.liuyx.note.alarm.AlarmReceiver {
-- String channelId
-- String name
-+ void onReceive(Context,Intent)
-}
-class cc.liuyx.note.UserSettingsActivity {
-- Switch nightMode
-- Switch reverseSort
-- LinearLayout fabColor
-- LinearLayout fabPlanColor
-- Switch noteTitle
-- SharedPreferences sharedPreferences
-- {static} boolean night_change
-# void onCreate(Bundle)
-# void needRefresh()
-- void initView()
-# void onActivityResult(int,int,Intent)
-- void setSelfNightMode()
-- void setNightModePref(boolean)
-+ boolean onKeyDown(int,KeyEvent)
-}
-class cc.liuyx.note.alarm.Plan {
-- long id
-- String title
-- String content
-- Calendar planTime
-+ int getYear()
-+ int getMonth()
-+ int getDay()
-+ int getHour()
-+ int getMinute()
-+ long getId()
-+ void setId(long)
-+ String getTitle()
-+ void setTitle(String)
-+ String getContent()
-+ void setContent(String)
-+ Calendar getPlanTime()
-+ String getTime()
-+ void setTime(String)
-}
-class cc.liuyx.note.adapter.TagAdapter {
-- Context context
-- List<String> tagList
-- List<Integer> numList
-+ int getCount()
-+ Object getItem(int)
-+ long getItemId(int)
-+ View getView(int,View,ViewGroup)
-}
-class cc.liuyx.note.alarm.CRUD {
-~ SQLiteOpenHelper dbHandler
-~ SQLiteDatabase db
-- {static} String[] columns
-+ void open()
-+ void close()
-+ Plan addPlan(Plan)
-+ Plan getPlan(long)
-+ List<Plan> getAllPlans()
-+ int updatePlan(Plan)
-+ void removePlan(Plan)
-}
-class cc.liuyx.note.alarm.EditAlarmActivity {
-- DatePickerDialog.OnDateSetListener dateSetListener
-- TimePickerDialog.OnTimeSetListener timeSetListener
-- EditText et_title
-- EditText et
-- Button set_date
-- Button set_time
-- TextView date
-- TextView time
-- Plan plan
-- int[] dateArray
-- int[] timeArray
-- int openMode
-- String old_title
-- String old_content
-- String old_time
-- long id
-- boolean timeChange
-# void onCreate(Bundle)
-+ boolean onKeyDown(int,KeyEvent)
-+ boolean onCreateOptionsMenu(Menu)
-+ boolean onOptionsItemSelected(MenuItem)
-# void needRefresh()
-- void init()
-- void setDateTV(int,int,int)
-- void setTimeTV(int,int)
-+ void onClick(View)
-- void isTimeChange()
-- boolean canBeSet()
-}
-class cc.liuyx.note.MainActivity {
-- NoteDatabase dbHelper
-- PlanDatabase planDbHelper
-- FloatingActionButton fab
-- FloatingActionButton fab_alarm
-- ListView lv
-- ListView lv_plan
-- LinearLayout lv_layout
-- LinearLayout lv_plan_layout
-- Context context
-- NoteAdapter adapter
-- PlanAdapter planAdapter
-- List<Note> noteList
-- List<Plan> planList
-- TextView mEmptyView
-- Toolbar myToolbar
-- PopupWindow popupWindow
-- PopupWindow popupCover
-- LayoutInflater layoutInflater
-- RelativeLayout main
-- ViewGroup customView
-- ViewGroup coverView
-- WindowManager wm
-- DisplayMetrics metrics
-- TagAdapter tagAdapter
-- TextView setting_text
-- ImageView setting_image
-- ListView lv_tag
-- TextView add_tag
-- BroadcastReceiver myReceiver
-- Achievement achievement
-- SharedPreferences sharedPreferences
-- Switch content_switch
-- AlarmManager alarmManager
-~ String[] list_String
-# void onCreate(Bundle)
-- void showPopUpWindow()
-- void refreshTagList()
-- void resetTagsX(AdapterView<?>)
-# void needRefresh()
-+ void initView()
-- void refreshLvVisibility()
-+ void initPopupView()
-- void initPrefs()
-+ boolean onCreateOptionsMenu(Menu)
-+ boolean onOptionsItemSelected(MenuItem)
-+ void refreshListView()
-- void chooseFabColor(int)
-- void chooseFabPlanColor(int)
-+ void onItemClick(AdapterView<?>,View,int,long)
-# void onActivityResult(int,int,Intent)
-+ boolean onItemLongClick(AdapterView<?>,View,int,long)
-+ void sortNotes(List<Note>,int)
-+ void sortPlans(List<Plan>,int)
-+ long dateStrToSec(String)
-+ List<Integer> numOfTagNotes(List<String>)
-+ int npLong(Long)
-+ void onDestroy()
-- void startAlarm(Plan)
-- void startAlarms(List<Plan>)
-- void cancelAlarm(Plan)
-- void cancelAlarms(List<Plan>)
-+ void onResume()
-}
-class cc.liuyx.note.MainActivity$Achievement {
-- SharedPreferences sharedPreferences
-- int noteNumber
-- int wordNumber
-- int noteLevel
-- int wordLevel
-- void getPref()
-- void initPref()
-- void addCurrent(List<Note>)
-+ void addNote(String)
-+ void deleteNote()
-+ void editNote(String,String)
-+ void noteNumberAchievement(int)
-+ void wordNumberAchievement(int)
-+ void announcement(String,int,int)
-+ String annoucementTitle(int,int)
-+ void setState(int)
-+ void listen()
-+ void resetAll()
-}
-class cc.liuyx.note.EditActivity {
-- NoteDatabase dbHelper
-- Context context
-- EditText et
-- String old_content
-- String old_time
-- int old_Tag
-- long id
-- int openMode
-- int tag
-- boolean tagChange
-# void onCreate(Bundle)
-# void needRefresh()
-+ boolean onCreateOptionsMenu(Menu)
-+ boolean onKeyDown(int,KeyEvent)
-+ boolean onOptionsItemSelected(MenuItem)
-+ String dateToStr()
-- void deleteNote(Intent)
-}
-class cc.liuyx.note.entity.SpinnerItem {
-- String tagName
-- int tagId
-+ String getTagName()
-+ void setTagName(String)
-+ int getTagId()
-+ void setTagId(int)
-}
-class cc.liuyx.note.db.NoteDatabase {
-+ {static} String TABLE_NAME
-+ {static} String CONTENT
-+ {static} String ID
-+ {static} String TIME
-+ {static} String MODE
-+ void onCreate(SQLiteDatabase)
-+ void onUpgrade(SQLiteDatabase,int,int)
-- void updateMode(SQLiteDatabase)
-}
-class com.example.atry.ExampleUnitTest {
-+ void addition_isCorrect()
-}
-
-
-android.database.sqlite.SQLiteOpenHelper <|-- cc.liuyx.note.alarm.PlanDatabase
-android.support.v7.app.AppCompatActivity <|-- cc.liuyx.note.BaseActivity
-android.widget.Filterable <|.. cc.liuyx.note.alarm.PlanAdapter
-android.widget.BaseAdapter <|-- cc.liuyx.note.alarm.PlanAdapter
-cc.liuyx.note.alarm.PlanAdapter +.. cc.liuyx.note.alarm.PlanAdapter$MyFilter
-cc.liuyx.note.alarm.Filter <|-- cc.liuyx.note.alarm.PlanAdapter$MyFilter
-android.widget.Filterable <|.. cc.liuyx.note.adapter.NoteAdapter
-android.widget.BaseAdapter <|-- cc.liuyx.note.adapter.NoteAdapter
-cc.liuyx.note.adapter.NoteAdapter +.. cc.liuyx.note.adapter.NoteAdapter$MyFilter
-cc.liuyx.note.adapter.Filter <|-- cc.liuyx.note.adapter.NoteAdapter$MyFilter
-cc.liuyx.note.OnClickListener <|.. cc.liuyx.note.FabColorActivity
-android.support.v7.app.AppCompatActivity <|-- cc.liuyx.note.FabColorActivity
-android.content.BroadcastReceiver <|-- cc.liuyx.note.alarm.AlarmReceiver
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.UserSettingsActivity
-android.widget.BaseAdapter <|-- cc.liuyx.note.adapter.TagAdapter
-cc.liuyx.note.alarm.OnClickListener <|.. cc.liuyx.note.alarm.EditAlarmActivity
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.alarm.EditAlarmActivity
-android.widget.AdapterView.OnItemClickListener <|.. cc.liuyx.note.MainActivity
-android.widget.AdapterView.OnItemLongClickListener <|.. cc.liuyx.note.MainActivity
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.MainActivity
-cc.liuyx.note.MainActivity +.. cc.liuyx.note.MainActivity$Achievement
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.EditActivity
-android.database.sqlite.SQLiteOpenHelper <|-- cc.liuyx.note.db.NoteDatabase
-@enduml
\ No newline at end of file
diff --git a/uml/activity.puml b/uml/activity.puml
index 639f824..2ca3560 100644
--- a/uml/activity.puml
+++ b/uml/activity.puml
@@ -1,5 +1,5 @@
 @startuml
-class cc.liuyx.note.UserSettingsActivity {
+class cc.liuyx.note.activity.UserSettingsActivity {
 - Switch nightMode
 - Switch reverseSort
 - LinearLayout fabColor
@@ -15,7 +15,37 @@ class cc.liuyx.note.UserSettingsActivity {
 - void setNightModePref(boolean)
 + boolean onKeyDown(int,KeyEvent)
 }
-class cc.liuyx.note.FabColorActivity {
+class cc.liuyx.note.activity.UserSettingsActivity$EditAlarmActivity {
+- DatePickerDialog.OnDateSetListener dateSetListener
+- TimePickerDialog.OnTimeSetListener timeSetListener
+- EditText et_title
+- EditText et
+- Button set_date
+- Button set_time
+- TextView date
+- TextView time
+- Plan plan
+- int[] dateArray
+- int[] timeArray
+- int openMode
+- String old_title
+- String old_content
+- String old_time
+- long id
+- boolean timeChange
+# void onCreate(Bundle)
++ boolean onKeyDown(int,KeyEvent)
++ boolean onCreateOptionsMenu(Menu)
++ boolean onOptionsItemSelected(MenuItem)
+# void needRefresh()
+- void init()
+- void setDateTV(int,int,int)
+- void setTimeTV(int,int)
++ void onClick(View)
+- void isTimeChange()
+- boolean canBeSet()
+}
+class cc.liuyx.note.activity.FabColorActivity {
 - Toolbar myToolbar
 - int openMode
 - SharedPreferences sharedPreferences
@@ -27,7 +57,7 @@ class cc.liuyx.note.FabColorActivity {
 + void onClick(View)
 + boolean onKeyDown(int,KeyEvent)
 }
-class cc.liuyx.note.EditActivity {
+class cc.liuyx.note.activity.EditActivity {
 - NoteDatabase dbHelper
 - Context context
 - EditText et
@@ -46,7 +76,11 @@ class cc.liuyx.note.EditActivity {
 + String dateToStr()
 - void deleteNote(Intent)
 }
-class cc.liuyx.note.MainActivity {
+class cc.liuyx.note.activity.AboutActivity {
+# void onCreate(Bundle)
+# void needRefresh()
+}
+class cc.liuyx.note.activity.MainActivity {
 - NoteDatabase dbHelper
 - PlanDatabase planDbHelper
 - FloatingActionButton fab
@@ -73,6 +107,8 @@ class cc.liuyx.note.MainActivity {
 - TagAdapter tagAdapter
 - TextView setting_text
 - ImageView setting_image
+- TextView about_text
+- ImageView about_image
 - ListView lv_tag
 - TextView add_tag
 - BroadcastReceiver myReceiver
@@ -110,7 +146,7 @@ class cc.liuyx.note.MainActivity {
 - void cancelAlarms(List<Plan>)
 + void onResume()
 }
-class cc.liuyx.note.MainActivity$Achievement {
+class cc.liuyx.note.activity.MainActivity$Achievement {
 - SharedPreferences sharedPreferences
 - int noteNumber
 - int wordNumber
@@ -130,7 +166,7 @@ class cc.liuyx.note.MainActivity$Achievement {
 + void listen()
 + void resetAll()
 }
-abstract class cc.liuyx.note.BaseActivity {
+abstract class cc.liuyx.note.activity.BaseActivity {
 + String TAG
 + String ACTION
 # BroadcastReceiver receiver
@@ -144,13 +180,17 @@ abstract class cc.liuyx.note.BaseActivity {
 }
 
 
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.UserSettingsActivity
-cc.liuyx.note.OnClickListener <|.. cc.liuyx.note.FabColorActivity
-android.support.v7.app.AppCompatActivity <|-- cc.liuyx.note.FabColorActivity
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.EditActivity
-android.widget.AdapterView.OnItemClickListener <|.. cc.liuyx.note.MainActivity
-android.widget.AdapterView.OnItemLongClickListener <|.. cc.liuyx.note.MainActivity
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.MainActivity
-cc.liuyx.note.MainActivity +.. cc.liuyx.note.MainActivity$Achievement
-android.support.v7.app.AppCompatActivity <|-- cc.liuyx.note.BaseActivity
+cc.liuyx.note.activity.BaseActivity <|-- cc.liuyx.note.activity.UserSettingsActivity
+cc.liuyx.note.activity.UserSettingsActivity +.. cc.liuyx.note.activity.UserSettingsActivity$EditAlarmActivity
+cc.liuyx.note.activity.OnClickListener <|.. cc.liuyx.note.activity.UserSettingsActivity$EditAlarmActivity
+cc.liuyx.note.activity.BaseActivity <|-- cc.liuyx.note.activity.UserSettingsActivity$EditAlarmActivity
+cc.liuyx.note.activity.OnClickListener <|.. cc.liuyx.note.activity.FabColorActivity
+android.support.v7.app.AppCompatActivity <|-- cc.liuyx.note.activity.FabColorActivity
+cc.liuyx.note.activity.BaseActivity <|-- cc.liuyx.note.activity.EditActivity
+cc.liuyx.note.activity.BaseActivity <|-- cc.liuyx.note.activity.AboutActivity
+android.widget.AdapterView.OnItemClickListener <|.. cc.liuyx.note.activity.MainActivity
+android.widget.AdapterView.OnItemLongClickListener <|.. cc.liuyx.note.activity.MainActivity
+cc.liuyx.note.activity.BaseActivity <|-- cc.liuyx.note.activity.MainActivity
+cc.liuyx.note.activity.MainActivity +.. cc.liuyx.note.activity.MainActivity$Achievement
+android.support.v7.app.AppCompatActivity <|-- cc.liuyx.note.activity.BaseActivity
 @enduml
\ No newline at end of file
diff --git a/uml/adapter.puml b/uml/adapter.puml
index a0b8ea6..8de52f9 100644
--- a/uml/adapter.puml
+++ b/uml/adapter.puml
@@ -23,6 +23,21 @@ class cc.liuyx.note.adapter.NoteAdapter$MyFilter {
 # FilterResults performFiltering(CharSequence)
 # void publishResults(CharSequence,FilterResults)
 }
+class cc.liuyx.note.adapter.PlanAdapter {
+- Context mContext
+- List<Plan> backList
+- List<Plan> planList
+~ PlanAdapter.MyFilter mFilter
++ int getCount()
++ Object getItem(int)
++ long getItemId(int)
++ View getView(int,View,ViewGroup)
++ Filter getFilter()
+}
+class cc.liuyx.note.adapter.PlanAdapter$MyFilter {
+# FilterResults performFiltering(CharSequence)
+# void publishResults(CharSequence,FilterResults)
+}
 
 
 android.widget.BaseAdapter <|-- cc.liuyx.note.adapter.TagAdapter
@@ -30,4 +45,8 @@ android.widget.Filterable <|.. cc.liuyx.note.adapter.NoteAdapter
 android.widget.BaseAdapter <|-- cc.liuyx.note.adapter.NoteAdapter
 cc.liuyx.note.adapter.NoteAdapter +.. cc.liuyx.note.adapter.NoteAdapter$MyFilter
 cc.liuyx.note.adapter.Filter <|-- cc.liuyx.note.adapter.NoteAdapter$MyFilter
+android.widget.Filterable <|.. cc.liuyx.note.adapter.PlanAdapter
+android.widget.BaseAdapter <|-- cc.liuyx.note.adapter.PlanAdapter
+cc.liuyx.note.adapter.PlanAdapter +.. cc.liuyx.note.adapter.PlanAdapter$MyFilter
+cc.liuyx.note.adapter.Filter <|-- cc.liuyx.note.adapter.PlanAdapter$MyFilter
 @enduml
\ No newline at end of file
diff --git a/uml/alarm.puml b/uml/alarm.puml
index 0b50581..a94a2c0 100644
--- a/uml/alarm.puml
+++ b/uml/alarm.puml
@@ -1,91 +1,4 @@
 @startuml
-class cc.liuyx.note.alarm.PlanDatabase {
-+ {static} String TABLE_NAME
-+ {static} String TITLE
-+ {static} String CONTENT
-+ {static} String ID
-+ {static} String TIME
-+ {static} String MODE
-+ void onCreate(SQLiteDatabase)
-+ void onUpgrade(SQLiteDatabase,int,int)
-}
-class cc.liuyx.note.alarm.Plan {
-- long id
-- String title
-- String content
-- Calendar planTime
-+ int getYear()
-+ int getMonth()
-+ int getDay()
-+ int getHour()
-+ int getMinute()
-+ long getId()
-+ void setId(long)
-+ String getTitle()
-+ void setTitle(String)
-+ String getContent()
-+ void setContent(String)
-+ Calendar getPlanTime()
-+ String getTime()
-+ void setTime(String)
-}
-class cc.liuyx.note.alarm.PlanAdapter {
-- Context mContext
-- List<Plan> backList
-- List<Plan> planList
-~ PlanAdapter.MyFilter mFilter
-+ int getCount()
-+ Object getItem(int)
-+ long getItemId(int)
-+ View getView(int,View,ViewGroup)
-+ Filter getFilter()
-}
-class cc.liuyx.note.alarm.PlanAdapter$MyFilter {
-# FilterResults performFiltering(CharSequence)
-# void publishResults(CharSequence,FilterResults)
-}
-class cc.liuyx.note.alarm.CRUD {
-~ SQLiteOpenHelper dbHandler
-~ SQLiteDatabase db
-- {static} String[] columns
-+ void open()
-+ void close()
-+ Plan addPlan(Plan)
-+ Plan getPlan(long)
-+ List<Plan> getAllPlans()
-+ int updatePlan(Plan)
-+ void removePlan(Plan)
-}
-class cc.liuyx.note.alarm.EditAlarmActivity {
-- DatePickerDialog.OnDateSetListener dateSetListener
-- TimePickerDialog.OnTimeSetListener timeSetListener
-- EditText et_title
-- EditText et
-- Button set_date
-- Button set_time
-- TextView date
-- TextView time
-- Plan plan
-- int[] dateArray
-- int[] timeArray
-- int openMode
-- String old_title
-- String old_content
-- String old_time
-- long id
-- boolean timeChange
-# void onCreate(Bundle)
-+ boolean onKeyDown(int,KeyEvent)
-+ boolean onCreateOptionsMenu(Menu)
-+ boolean onOptionsItemSelected(MenuItem)
-# void needRefresh()
-- void init()
-- void setDateTV(int,int,int)
-- void setTimeTV(int,int)
-+ void onClick(View)
-- void isTimeChange()
-- boolean canBeSet()
-}
 class cc.liuyx.note.alarm.AlarmReceiver {
 - String channelId
 - String name
@@ -93,12 +6,5 @@ class cc.liuyx.note.alarm.AlarmReceiver {
 }
 
 
-android.database.sqlite.SQLiteOpenHelper <|-- cc.liuyx.note.alarm.PlanDatabase
-android.widget.Filterable <|.. cc.liuyx.note.alarm.PlanAdapter
-android.widget.BaseAdapter <|-- cc.liuyx.note.alarm.PlanAdapter
-cc.liuyx.note.alarm.PlanAdapter +.. cc.liuyx.note.alarm.PlanAdapter$MyFilter
-cc.liuyx.note.alarm.Filter <|-- cc.liuyx.note.alarm.PlanAdapter$MyFilter
-cc.liuyx.note.alarm.OnClickListener <|.. cc.liuyx.note.alarm.EditAlarmActivity
-cc.liuyx.note.BaseActivity <|-- cc.liuyx.note.alarm.EditAlarmActivity
 android.content.BroadcastReceiver <|-- cc.liuyx.note.alarm.AlarmReceiver
 @enduml
\ No newline at end of file
diff --git a/uml/db.puml b/uml/db.puml
index 0f72ea8..177f497 100644
--- a/uml/db.puml
+++ b/uml/db.puml
@@ -1,15 +1,25 @@
 @startuml
-class cc.liuyx.note.db.CRUD {
+class cc.liuyx.note.db.PlanCRUD {
 ~ SQLiteOpenHelper dbHandler
 ~ SQLiteDatabase db
 - {static} String[] columns
 + void open()
 + void close()
-+ void addNote(Note)
-+ Note getNote(long)
-+ List<Note> getAllNotes()
-+ void updateNote(Note)
-+ void removeNote(Note)
++ void addPlan(Plan)
++ Plan getPlan(long)
++ List<Plan> getAllPlans()
++ int updatePlan(Plan)
++ void removePlan(Plan)
+}
+class cc.liuyx.note.db.PlanDatabase {
++ {static} String TABLE_NAME
++ {static} String TITLE
++ {static} String CONTENT
++ {static} String ID
++ {static} String TIME
++ {static} String MODE
++ void onCreate(SQLiteDatabase)
++ void onUpgrade(SQLiteDatabase,int,int)
 }
 class cc.liuyx.note.db.NoteDatabase {
 + {static} String TABLE_NAME
@@ -21,7 +31,20 @@ class cc.liuyx.note.db.NoteDatabase {
 + void onUpgrade(SQLiteDatabase,int,int)
 - void updateMode(SQLiteDatabase)
 }
+class cc.liuyx.note.db.NoteCRUD {
+~ SQLiteOpenHelper dbHandler
+~ SQLiteDatabase db
+- {static} String[] columns
++ void open()
++ void close()
++ void addNote(Note)
++ Note getNote(long)
++ List<Note> getAllNotes()
++ void updateNote(Note)
++ void removeNote(Note)
+}
 
 
+android.database.sqlite.SQLiteOpenHelper <|-- cc.liuyx.note.db.PlanDatabase
 android.database.sqlite.SQLiteOpenHelper <|-- cc.liuyx.note.db.NoteDatabase
 @enduml
\ No newline at end of file
diff --git a/uml/entity.puml b/uml/entity.puml
new file mode 100644
index 0000000..0a9a076
--- /dev/null
+++ b/uml/entity.puml
@@ -0,0 +1,45 @@
+@startuml
+class cc.liuyx.note.entity.Note {
+- long id
+- String content
+- String time
+- int tag
++ long getId()
++ String getContent()
++ String getTime()
++ void setId(long)
++ void setContent(String)
++ void setTime(String)
++ String toString()
++ int getTag()
++ void setTag(int)
+}
+class cc.liuyx.note.entity.SpinnerItem {
+- String tagName
+- int tagId
++ String getTagName()
++ void setTagName(String)
++ int getTagId()
++ void setTagId(int)
+}
+class cc.liuyx.note.entity.Plan {
+- long id
+- String title
+- String content
+- Calendar planTime
++ int getYear()
++ int getMonth()
++ int getDay()
++ int getHour()
++ int getMinute()
++ long getId()
++ void setId(long)
++ String getTitle()
++ void setTitle(String)
++ String getContent()
++ void setContent(String)
++ Calendar getPlanTime()
++ String getTime()
++ void setTime(String)
+}
+@enduml
\ No newline at end of file