add

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java

@@ -1,21 +1,5 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
-
+ 
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.Context;
@@ -32,68 +16,91 @@ import android.os.PowerManager;
 import android.provider.Settings;
 import android.view.Window;
 import android.view.WindowManager;
-
+ 
 import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.tool.DataUtils;
-
+ 
 import java.io.IOException;
-
+ 
-
 public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
-    private long mNoteId;
+    private long mNoteId;      //文本在数据库存储中的ID号 
-    private String mSnippet;
+    private String mSnippet;   //闹钟提示时出现的文本片段
     private static final int SNIPPET_PREW_MAX_LEN = 60;
     MediaPlayer mPlayer;
-
+ 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    protected void onCreate(Bundle savedInstanceState) {    
         super.onCreate(savedInstanceState);
+        //Bundle类型的数据与Map类型的数据相似，都是以key-value的形式存储数据的
+        //onsaveInstanceState方法是用来保存Activity的状态的
+        //能从onCreate的参数savedInsanceState中获得状态数据
         requestWindowFeature(Window.FEATURE_NO_TITLE);
-
+        //界面显示——无标题
+ 
         final Window win = getWindow();
         win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
-
+ 
         if (!isScreenOn()) {
             win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
+            		//保持窗体点亮
                     | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
+                    //将窗体点亮
                     | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
+                    //允许窗体点亮时锁屏
                     | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
-        }
+        }//在手机锁屏后如果到了闹钟提示时间，点亮屏幕
-
+ 
         Intent intent = getIntent();
-
+ 
         try {
             mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
             mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
+            //根据ID从数据库中获取标签的内容；
+            //getContentResolver（）是实现数据共享，实例存储。
             mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
                     SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
                     : mSnippet;
+            //判断标签片段是否达到符合长度
         } catch (IllegalArgumentException e) {
             e.printStackTrace();
             return;
         }
-
+        /*
+        try
+        {
+        	// 代码区
+        }
+        catch(Exception e)
+        {
+        	// 异常处理
+        }
+                     代码区如果有错误，就会返回所写异常的处理。*/
         mPlayer = new MediaPlayer();
         if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
             showActionDialog();
+            //弹出对话框
             playAlarmSound();
+            //闹钟提示音激发
         } else {
             finish();
+            //完成闹钟动作
         }
     }
-
+ 
     private boolean isScreenOn() {
+    	//判断屏幕是否锁屏，调用系统函数判断，最后返回值是布尔类型
         PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
         return pm.isScreenOn();
     }
-
+ 
     private void playAlarmSound() {
+    	//闹钟提示音激发
         Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
-
+        //调用系统的铃声管理URI，得到闹钟提示音
         int silentModeStreams = Settings.System.getInt(getContentResolver(),
                 Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
-
+ 
         if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
             mPlayer.setAudioStreamType(silentModeStreams);
         } else {
@@ -101,12 +108,19 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
         }
         try {
             mPlayer.setDataSource(this, url);
+            //方法：setDataSource(Context context, Uri uri) 
+            //解释：无返回值，设置多媒体数据来源【根据 Uri】
             mPlayer.prepare();
+            //准备同步
             mPlayer.setLooping(true);
+            //设置是否循环播放
             mPlayer.start();
+            //开始播放
         } catch (IllegalArgumentException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
+            //e.printStackTrace()函数功能是抛出异常， 还将显示出更深的调用信息
+            //System.out.println(e)，这个方法打印出异常，并且输出在哪里出现的异常
         } catch (SecurityException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
@@ -118,41 +132,61 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
             e.printStackTrace();
         }
     }
-
+ 
     private void showActionDialog() {
         AlertDialog.Builder dialog = new AlertDialog.Builder(this);
+        //AlertDialog的构造方法全部是Protected的
+        //所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。
+        //要创建一个AlertDialog，就要用到AlertDialog.Builder中的create()方法
+        //如这里的dialog就是新建了一个AlertDialog
         dialog.setTitle(R.string.app_name);
+        //为对话框设置标题
         dialog.setMessage(mSnippet);
+        //为对话框设置内容
         dialog.setPositiveButton(R.string.notealert_ok, this);
+        //给对话框添加"Yes"按钮
         if (isScreenOn()) {
             dialog.setNegativeButton(R.string.notealert_enter, this);
-        }
+        }//对话框添加"No"按钮
         dialog.show().setOnDismissListener(this);
     }
-
+ 
     public void onClick(DialogInterface dialog, int which) {
         switch (which) {
+        //用which来选择click后下一步的操作
             case DialogInterface.BUTTON_NEGATIVE:
+            	//这是取消操作
                 Intent intent = new Intent(this, NoteEditActivity.class);
+                //实现两个类间的数据传输
                 intent.setAction(Intent.ACTION_VIEW);
+                //设置动作属性
                 intent.putExtra(Intent.EXTRA_UID, mNoteId);
+                //实现key-value对
+                //EXTRA_UID为key；mNoteId为键
                 startActivity(intent);
+                //开始动作
                 break;
             default:
+            	//这是确定操作
                 break;
         }
     }
-
+ 
     public void onDismiss(DialogInterface dialog) {
+    	//忽略
         stopAlarmSound();
+        //停止闹钟声音
         finish();
+        //完成该动作
     }
-
+ 
     private void stopAlarmSound() {
         if (mPlayer != null) {
             mPlayer.stop();
+            //停止播放
             mPlayer.release();
+            //释放MediaPlayer对象
             mPlayer = null;
         }
     }
-}
+}

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/AlarmInitReceiver.java

@@ -1,21 +1,5 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
-
+ 
 import android.app.AlarmManager;
 import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
@@ -23,30 +7,34 @@ import android.content.ContentUris;
 import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
-
+ 
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
-
+ 
-
+ 
 public class AlarmInitReceiver extends BroadcastReceiver {
-
+ 
     private static final String [] PROJECTION = new String [] {
         NoteColumns.ID,
         NoteColumns.ALERTED_DATE
     };
-
+    //对数据库的操作，调用标签ID和闹钟时间
     private static final int COLUMN_ID                = 0;
     private static final int COLUMN_ALERTED_DATE      = 1;
-
+ 
     @Override
     public void onReceive(Context context, Intent intent) {
         long currentDate = System.currentTimeMillis();
+        //System.currentTimeMillis()产生一个当前的毫秒
+        //这个毫秒其实就是自1970年1月1日0时起的毫秒数
         Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
                 PROJECTION,
                 NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
                 new String[] { String.valueOf(currentDate) },
+                //将long变量currentDate转化为字符串
                 null);
-
+        //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签
+ 
         if (c != null) {
             if (c.moveToFirst()) {
                 do {
@@ -61,5 +49,8 @@ public class AlarmInitReceiver extends BroadcastReceiver {
             }
             c.close();
         }
+        //然而通过网上查找资料发现，对于闹钟机制的启动，通常需要上面的几个步骤
+        //如新建Intent、PendingIntent以及AlarmManager等
+        //这里就是根据数据库里的闹钟时间创建一个闹钟机制
     }
-}
+}

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/AlarmReceiver.java

@@ -1,30 +1,20 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
-
+ 
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
-
+ 
 public class AlarmReceiver extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
-        intent.setClass(context, AlarmAlertActivity.class);
+        intent.setClass(context, AlarmAlertActivity.class);  
+        //启动AlarmAlertActivity
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        //activity要存在于activity的栈中，而非activity的途径启动activity时必然不存在一个activity的栈
+        //所以要新起一个栈装入启动的activity
         context.startActivity(intent);
     }
 }
+//这是实现alarm这个功能最接近用户层的包，基于上面的两个包，
+//作用还需要深究但是对于setClass和addFlags的
+ 

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/DateTimePicker.java

@@ -1,37 +1,22 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
-
+ 
 import java.text.DateFormatSymbols;
 import java.util.Calendar;
-
+ 
 import net.micode.notes.R;
-
+ 
-
+ 
 import android.content.Context;
 import android.text.format.DateFormat;
 import android.view.View;
 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
     private static final boolean DEFAULT_ENABLE_STATE = true;
-
+ 
     private static final int HOURS_IN_HALF_DAY = 12;
     private static final int HOURS_IN_ALL_DAY = 24;
     private static final int DAYS_IN_ALL_WEEK = 7;
@@ -45,25 +30,27 @@ public class DateTimePicker extends FrameLayout {
     private static final int MINUT_SPINNER_MAX_VAL = 59;
     private static final int AMPM_SPINNER_MIN_VAL = 0;
     private static final int AMPM_SPINNER_MAX_VAL = 1;
-
+    //初始化控件
     private final NumberPicker mDateSpinner;
     private final NumberPicker mHourSpinner;
     private final NumberPicker mMinuteSpinner;
     private final NumberPicker mAmPmSpinner;
+    //NumberPicker是数字选择器
+    //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;
-
+ 
     private boolean mIs24HourView;
-
+ 
     private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
-
+ 
     private boolean mInitialising;
-
+ 
     private OnDateTimeChangedListener mOnDateTimeChangedListener;
-
+ 
     private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
@@ -71,41 +58,49 @@ public class DateTimePicker extends FrameLayout {
             updateDateControl();
             onDateTimeChanged();
         }
-    };
+    };//OnValueChangeListener，这是时间改变监听器，这里主要是对日期的监听
-
+    //将现在日期的值传递给mDate；updateDateControl是同步操作
+ 
     private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
-        @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();
+            //声明一个Calendar的变量cal，便于后续的操作
             if (!mIs24HourView) {
                 if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
                     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
                 } 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
                 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;
                     updateAmPmControl();
-                }
+                }//这里是对于12小时制时，中午11点和12点交替时对AM和PM的更改
             } else {
                 if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
                     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
                 } 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
             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
             mDate.set(Calendar.HOUR_OF_DAY, newHour);
+            //通过set函数将新的Hour值传给mDate
             onDateTimeChanged();
             if (isDateChanged) {
                 setCurrentYear(cal.get(Calendar.YEAR));
@@ -114,18 +109,22 @@ public class DateTimePicker extends FrameLayout {
             }
         }
     };
-
+ 
     private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
+        //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();
             int offset = 0;
+            //设置offset，作为小时改变的一个记录数据
             if (oldVal == maxValue && newVal == minValue) {
                 offset += 1;
             } 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0，新值为59，则offset减1
             if (offset != 0) {
                 mDate.add(Calendar.HOUR_OF_DAY, offset);
                 mHourSpinner.setValue(getCurrentHour());
@@ -143,9 +142,10 @@ public class DateTimePicker extends FrameLayout {
             onDateTimeChanged();
         }
     };
-
+ 
     private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
-        @Override
+        //对AM和PM的监听
+    	@Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
             mIsAm = !mIsAm;
             if (mIsAm) {
@@ -157,63 +157,66 @@ public class DateTimePicker extends FrameLayout {
             onDateTimeChanged();
         }
     };
-
+ 
     public interface OnDateTimeChangedListener {
         void onDateTimeChanged(DateTimePicker view, int year, int month,
                 int dayOfMonth, int hourOfDay, int minute);
     }
-
+ 
     public DateTimePicker(Context context) {
         this(context, System.currentTimeMillis());
-    }
+    }//通过对数据库的访问，获取当前的系统时间
-
+ 
     public DateTimePicker(Context context, long date) {
         this(context, date, DateFormat.is24HourFormat(context));
-    }
+    }//上面函数的得到的是一个天文数字（1970至今的秒数），需要DateFormat将其变得有意义
-
+ 
     public DateTimePicker(Context context, long date, boolean is24HourView) {
         super(context);
+        //获取系统时间
         mDate = Calendar.getInstance();
         mInitialising = true;
         mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
         inflate(context, R.layout.datetime_picker, this);
-
+        //如果当前Activity里用到别的layout，比如对话框layout
+        //还要设置这个layout上的其他组件的内容，就必须用inflate()方法先将对话框的layout找出来
+        //然后再用findViewById()找到它上面的其它组件
         mDateSpinner = (NumberPicker) findViewById(R.id.date);
         mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
         mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
         mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
-
+ 
         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.setMinValue(MINUT_SPINNER_MIN_VAL);  
         mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
         mMinuteSpinner.setOnLongPressUpdateInterval(100);
         mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
-
+ 
         String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
         mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
         mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
         mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
         mAmPmSpinner.setDisplayedValues(stringsForAmPm);
         mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
-
+ 
         // update controls to initial state
         updateDateControl();
         updateHourControl();
         updateAmPmControl();
-
+ 
         set24HourView(is24HourView);
-
+ 
         // set to current time
         setCurrentDate(date);
-
+ 
         setEnabled(isEnabled());
-
+ 
         // set the content descriptions
         mInitialising = false;
     }
-
+ 
     @Override
     public void setEnabled(boolean enabled) {
         if (mIsEnabled == enabled) {
@@ -226,12 +229,14 @@ 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;
     }
-
+ 
     /**
      * Get the current date in millis
      *
@@ -239,8 +244,8 @@ 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
      *
@@ -251,8 +256,8 @@ 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
      *
@@ -269,17 +274,18 @@ public class DateTimePicker extends FrameLayout {
         setCurrentDay(dayOfMonth);
         setCurrentHour(hourOfDay);
         setCurrentMinute(minute);
-    }
+    }//实现函数功能——设置当前的时间，参数是各详细的变量
-
+ 
     /**
      * Get current year
      *
      * @return The current year
      */
+    //下面是得到year、month、day等值
     public int getCurrentYear() {
         return mDate.get(Calendar.YEAR);
     }
-
+ 
     /**
      * Set current year
      *
@@ -293,7 +299,7 @@ public class DateTimePicker extends FrameLayout {
         updateDateControl();
         onDateTimeChanged();
     }
-
+ 
     /**
      * Get current month in the year
      *
@@ -302,7 +308,7 @@ public class DateTimePicker extends FrameLayout {
     public int getCurrentMonth() {
         return mDate.get(Calendar.MONTH);
     }
-
+ 
     /**
      * Set current month in the year
      *
@@ -316,7 +322,7 @@ public class DateTimePicker extends FrameLayout {
         updateDateControl();
         onDateTimeChanged();
     }
-
+ 
     /**
      * Get current day of the month
      *
@@ -325,7 +331,7 @@ public class DateTimePicker extends FrameLayout {
     public int getCurrentDay() {
         return mDate.get(Calendar.DAY_OF_MONTH);
     }
-
+ 
     /**
      * Set current day of the month
      *
@@ -339,7 +345,7 @@ public class DateTimePicker extends FrameLayout {
         updateDateControl();
         onDateTimeChanged();
     }
-
+ 
     /**
      * Get current hour in 24 hour mode, in the range (0~23)
      * @return The current hour in 24 hour mode
@@ -347,7 +353,7 @@ public class DateTimePicker extends FrameLayout {
     public int getCurrentHourOfDay() {
         return mDate.get(Calendar.HOUR_OF_DAY);
     }
-
+ 
     private int getCurrentHour() {
         if (mIs24HourView){
             return getCurrentHourOfDay();
@@ -360,7 +366,7 @@ public class DateTimePicker extends FrameLayout {
             }
         }
     }
-
+ 
     /**
      * Set current hour in 24 hour mode, in the range (0~23)
      *
@@ -388,7 +394,7 @@ public class DateTimePicker extends FrameLayout {
         mHourSpinner.setValue(hourOfDay);
         onDateTimeChanged();
     }
-
+ 
     /**
      * Get currentMinute
      *
@@ -397,7 +403,7 @@ public class DateTimePicker extends FrameLayout {
     public int getCurrentMinute() {
         return mDate.get(Calendar.MINUTE);
     }
-
+ 
     /**
      * Set current minute
      */
@@ -409,14 +415,14 @@ public class DateTimePicker extends FrameLayout {
         mDate.set(Calendar.MINUTE, minute);
         onDateTimeChanged();
     }
-
+ 
     /**
      * @return true if this is in 24 hour view else false.
      */
     public boolean is24HourView () {
         return mIs24HourView;
     }
-
+ 
     /**
      * Set whether in 24 hour or AM/PM mode.
      *
@@ -433,7 +439,7 @@ public class DateTimePicker extends FrameLayout {
         setCurrentHour(hour);
         updateAmPmControl();
     }
-
+ 
     private void updateDateControl() {
         Calendar cal = Calendar.getInstance();
         cal.setTimeInMillis(mDate.getTimeInMillis());
@@ -446,8 +452,8 @@ public class DateTimePicker extends FrameLayout {
         mDateSpinner.setDisplayedValues(mDateDisplayValues);
         mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
         mDateSpinner.invalidate();
-    }
+    }// 对于星期几的算法
-
+ 
     private void updateAmPmControl() {
         if (mIs24HourView) {
             mAmPmSpinner.setVisibility(View.GONE);
@@ -455,9 +461,9 @@ 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() {
         if (mIs24HourView) {
             mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
@@ -465,9 +471,9 @@ 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
     }
-
+ 
     /**
      * Set the callback that indicates the 'Set' button has been pressed.
      * @param callback the callback, if null will do nothing
@@ -475,11 +481,11 @@ public class DateTimePicker extends FrameLayout {
     public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
         mOnDateTimeChangedListener = callback;
     }
-
+ 
     private void onDateTimeChanged() {
         if (mOnDateTimeChangedListener != null) {
             mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
                     getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
-        }
+        }  
     }
-}
+}

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/DateTimePickerDialog.java

@@ -1,49 +1,40 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
-
+ 
 import java.util.Calendar;
-
+ 
 import net.micode.notes.R;
 import net.micode.notes.ui.DateTimePicker;
 import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
-
+ 
 import android.app.AlertDialog;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.text.format.DateFormat;
 import android.text.format.DateUtils;
-
+ 
 public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
-
+ 
     private Calendar mDate = Calendar.getInstance();
+    //创建一个Calendar类型的变量 mDate，方便时间的操作
     private boolean mIs24HourView;
     private OnDateTimeSetListener mOnDateTimeSetListener;
+    //声明一个时间日期滚动选择控件 mOnDateTimeSetListener
     private DateTimePicker mDateTimePicker;
-
+    //DateTimePicker控件，控件一般用于让用户可以从日期列表中选择单个值。
+    //运行时，单击控件边上的下拉箭头，会显示为两个部分：一个下拉列表，一个用于选择日期的
+ 
     public interface OnDateTimeSetListener {
         void OnDateTimeSet(AlertDialog dialog, long date);
     }
-
+ 
     public DateTimePickerDialog(Context context, long date) {
+    	//对该界面对话框的实例化
         super(context);
+        //对数据库的操作
         mDateTimePicker = new DateTimePicker(context);
         setView(mDateTimePicker);
+        //添加一个子视图
         mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
             public void onDateTimeChanged(DateTimePicker view, int year, int month,
                     int dayOfMonth, int hourOfDay, int minute) {
@@ -52,26 +43,31 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
                 mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
                 mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
                 mDate.set(Calendar.MINUTE, minute);
+                //将视图中的各选项设置为系统当前时间
                 updateTitle(mDate.getTimeInMillis());
             }
         });
         mDate.setTimeInMillis(date);
+        //得到系统时间
         mDate.set(Calendar.SECOND, 0);
+        //将秒数设置为0
         mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
         setButton(context.getString(R.string.datetime_dialog_ok), this);
         setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
+        //设置按钮
         set24HourView(DateFormat.is24HourFormat(this.getContext()));
+        //时间标准化打印
         updateTitle(mDate.getTimeInMillis());
     }
-
+ 
     public void set24HourView(boolean is24HourView) {
         mIs24HourView = is24HourView;
     }
-
+ 
     public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
         mOnDateTimeSetListener = callBack;
-    }
+    }//将时间日期滚动选择控件实例化
-
+ 
     private void updateTitle(long date) {
         int flag =
             DateUtils.FORMAT_SHOW_YEAR |
@@ -79,12 +75,13 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
             DateUtils.FORMAT_SHOW_TIME;
         flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
         setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
-    }
+    }//android开发中常见日期管理工具类（API）——DateUtils：按照上下午显示时间
-
+ 
     public void onClick(DialogInterface arg0, int arg1) {
         if (mOnDateTimeSetListener != null) {
             mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
         }
-    }
+    }//第一个参数arg0是接收到点击事件的对话框
-
+    //第二个参数arg1是该对话框上的按钮
+ 
 }

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/DropdownMenu.java

@@ -1,21 +1,5 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
-
+ 
 import android.content.Context;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -24,38 +8,42 @@ import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.PopupMenu;
 import android.widget.PopupMenu.OnMenuItemClickListener;
-
+ 
 import net.micode.notes.R;
-
+ 
 public class DropdownMenu {
     private Button mButton;
     private PopupMenu mPopupMenu;
+    //声明一个下拉菜单
     private Menu mMenu;
-
+ 
     public DropdownMenu(Context context, Button button, int menuId) {
         mButton = button;
         mButton.setBackgroundResource(R.drawable.dropdown_icon);
+        //设置这个view的背景
         mPopupMenu = new PopupMenu(context, mButton);
         mMenu = mPopupMenu.getMenu();
         mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
+        //MenuInflater是用来实例化Menu目录下的Menu布局文件
+        //根据ID来确认menu的内容选项
         mButton.setOnClickListener(new OnClickListener() {
             public void onClick(View v) {
                 mPopupMenu.show();
             }
         });
     }
-
+ 
     public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
         if (mPopupMenu != null) {
             mPopupMenu.setOnMenuItemClickListener(listener);
-        }
+        }//设置菜单的监听
     }
-
+ 
     public MenuItem findItem(int id) {
         return mMenu.findItem(id);
-    }
+    }//对于菜单选项的初始化，根据索引搜索菜单需要的选项
-
+ 
     public void setTitle(CharSequence title) {
         mButton.setText(title);
-    }
+    }//布局文件，设置标题
-}
+}

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/FoldersListAdapter.java

@@ -68,4 +68,4 @@ public class FoldersListAdapter extends CursorAdapter {
         }
     }
  
-}
+}

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java

@@ -1064,4 +1064,4 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     private void showToast(int resId, int duration) {
         Toast.makeText(this, resId, duration).show();
     }
-}
+}

src/MiNotes-master/app/src/main/java/net/micode/notes/ui/NoteEditText.java

@@ -1,5 +1,5 @@
 package net.micode.notes.ui;
-
+ 
 import android.content.Context;
 import android.graphics.Rect;
 import android.text.Layout;
@@ -15,18 +15,18 @@ import android.view.MenuItem;
 import android.view.MenuItem.OnMenuItemClickListener;
 import android.view.MotionEvent;
 import android.widget.EditText;
-
+ 
 import net.micode.notes.R;
-
+ 
 import java.util.HashMap;
 import java.util.Map;
-
+ 
 //继承edittext，设置便签设置文本框
 public class NoteEditText extends EditText {  
     private static final String TAG = "NoteEditText";
     private int mIndex;
     private int mSelectionStartBeforeDelete;
-
+ 
     private static final String SCHEME_TEL = "tel:" ;
     private static final String SCHEME_HTTP = "http:" ;
     private static final String SCHEME_EMAIL = "mailto:" ;
@@ -38,7 +38,7 @@ public class NoteEditText extends EditText {
         sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web);
         sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email);
     }
-
+ 
     /**
      * Call by the {@link NoteEditActivity} to delete or add edit text
      */
@@ -50,28 +50,28 @@ public class NoteEditText extends EditText {
          */
     	//处理删除按键时的操作
         void onEditTextDelete(int index, String text);
-
+ 
         /**
          * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
          * happen
          */
         //处理进入按键时的操作
         void onEditTextEnter(int index, String text);
-
+ 
         /**
          * Hide or show item option when text change
          */
         void onTextChange(int index, boolean hasText);
     }
-
+ 
     private OnTextViewChangeListener mOnTextViewChangeListener;
-
+ 
     //根据context设置文本
     public NoteEditText(Context context) {
         super(context, null);//用super引用父类变量
         mIndex = 0;
     }
-
+ 
     //设置当前光标
     public void setIndex(int index) {
         mIndex = index;
@@ -81,19 +81,19 @@ public class NoteEditText extends EditText {
     public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
         mOnTextViewChangeListener = listener;
     }
-
+ 
     //AttributeSet 百度了一下是自定义空控件属性，用于维护便签动态变化的属性
     //初始化便签
     public NoteEditText(Context context, AttributeSet    attrs) {
         super(context, attrs, android.R.attr.editTextStyle);
     }
-
+ 
     // 根据defstyle自动初始化
     public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
         // TODO Auto-generated construct or stub
     } 
-
+ 
     @Override
     //view里的函数，处理手机屏幕的所有事件
     /*参数event为手机屏幕触摸事件封装类的对象，其中封装了该事件的所有信息，
@@ -119,10 +119,10 @@ public class NoteEditText extends EditText {
                 Selection.setSelection(getText(), off);
                 break;
         }
-
+ 
         return super.onTouchEvent(event);
     }
-
+ 
     @Override
     /*
      * 函数功能：处理用户按下一个键盘按键时会触发 的事件
@@ -147,7 +147,7 @@ public class NoteEditText extends EditText {
       //继续执行父类的其他点击事件
         return super.onKeyDown(keyCode, event);
     }
-
+ 
     @Override
     /*
      * 函数功能：处理用户松开一个键盘按键时会触发 的事件
@@ -192,7 +192,7 @@ public class NoteEditText extends EditText {
         //继续执行父类的其他按键弹起的事件
         return super.onKeyUp(keyCode, event);
     }
-
+ 
     @Override
     /*
      * 函数功能：当焦点发生变化时，会自动调用该方法来处理焦点改变的事件
@@ -216,7 +216,7 @@ public class NoteEditText extends EditText {
     	//继续执行父类的其他焦点变化的事件
         super.onFocusChanged(focused, direction, previouslyFocusedRect);
     }
-
+ 
     @Override
     /*
      * 函数功能：生成上下文菜单
@@ -228,7 +228,7 @@ public class NoteEditText extends EditText {
             int selStart = getSelectionStart();
             int selEnd = getSelectionEnd();
             //获取文本开始和结尾位置
-
+ 
             int min = Math.min(selStart, selEnd);
             int max = Math.max(selStart, selEnd);
             //获取开始到结尾的最大值和最小值
@@ -245,12 +245,12 @@ public class NoteEditText extends EditText {
                         break;
                     }
                 }
-
+ 
                 if (defaultResId == 0) {
                 	//defaultResId == 0则说明url并没有添加任何东西，所以置为连接其他SchemaActionResMap的值
                     defaultResId = R.string.note_link_other;
                 }
-
+ 
                 //建立菜单
                 menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
                         new OnMenuItemClickListener() {