diff --git a/doc/1 b/doc/1
deleted file mode 100644
index e69de29..0000000
diff --git a/doc/ui设计类图.png b/doc/ui设计类图.png
new file mode 100644
index 0000000..05b5d84
Binary files /dev/null and b/doc/ui设计类图.png differ
diff --git a/doc/分析类图.png b/doc/分析类图.png
new file mode 100644
index 0000000..ad7a782
Binary files /dev/null and b/doc/分析类图.png differ
diff --git a/doc/小米便签维护-需求与设计方案_崔凌宵.docx b/doc/小米便签维护-需求与设计方案_崔凌宵.docx
index c45cdc5..6fe6c2d 100644
Binary files a/doc/小米便签维护-需求与设计方案_崔凌宵.docx and b/doc/小米便签维护-需求与设计方案_崔凌宵.docx differ
diff --git a/doc/展示ppt.pptx b/doc/展示ppt.pptx
new file mode 100644
index 0000000..5cdf80f
Binary files /dev/null and b/doc/展示ppt.pptx differ
diff --git a/doc/插入图片用例顺序图.png b/doc/插入图片用例顺序图.png
new file mode 100644
index 0000000..c779ec9
Binary files /dev/null and b/doc/插入图片用例顺序图.png differ
diff --git a/doc/插入声音用例顺序图.png b/doc/插入声音用例顺序图.png
new file mode 100644
index 0000000..f889458
Binary files /dev/null and b/doc/插入声音用例顺序图.png differ
diff --git a/doc/注释代码1089行与新功能代码364行.md b/doc/注释代码1089行与新功能代码364行.md
new file mode 100644
index 0000000..d9be11e
--- /dev/null
+++ b/doc/注释代码1089行与新功能代码364行.md
@@ -0,0 +1,2 @@
+注释代码 506+344+239 = 1089
+新功能代码 364
\ No newline at end of file
diff --git a/doc/类设计图.png b/doc/类设计图.png
new file mode 100644
index 0000000..fa8c284
Binary files /dev/null and b/doc/类设计图.png differ
diff --git a/doc/软件体系结构图.png b/doc/软件体系结构图.png
new file mode 100644
index 0000000..c740853
Binary files /dev/null and b/doc/软件体系结构图.png differ
diff --git a/src/Notes/res/layout/activity_main.xml b/src/Notes/res/layout/activity_main.xml
new file mode 100644
index 0000000..86a5d97
--- /dev/null
+++ b/src/Notes/res/layout/activity_main.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/src/Notes/res/layout/note_edit.xml b/src/Notes/res/layout/note_edit.xml
index 10b2aa7..3e5ba0c 100644
--- a/src/Notes/res/layout/note_edit.xml
+++ b/src/Notes/res/layout/note_edit.xml
@@ -74,6 +74,13 @@
                 android:layout_height="7dip"
                 android:background="@drawable/bg_color_btn_mask" />
 
+            <LinearLayout
+        android:id="@+id/audioContainer"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingTop="16dp"/>
+
             <ScrollView
                 android:layout_width="fill_parent"
                 android:layout_height="0dip"
@@ -123,6 +130,8 @@
         android:background="@drawable/bg_color_btn_mask"
         android:layout_gravity="top|right" />
 
+
+
     <LinearLayout
         android:id="@+id/note_bg_color_selector"
         android:layout_width="wrap_content"
diff --git a/src/Notes/res/menu/note_edit.xml b/src/Notes/res/menu/note_edit.xml
index 35cacd1..8c40cbb 100644
--- a/src/Notes/res/menu/note_edit.xml
+++ b/src/Notes/res/menu/note_edit.xml
@@ -49,4 +49,10 @@
     <item
         android:id="@+id/menu_delete_remind"
         android:title="@string/menu_remove_remind" />
+    <item
+        android:id="@+id/menu_insert_image"
+        android:title="@string/menu_insert_image" />
+    <item
+        android:id="@+id/menu_insert_audio"
+        android:title="@string/menu_insert_audio" />
 </menu>
\ No newline at end of file
diff --git a/src/Notes/res/values-night/themes.xml b/src/Notes/res/values-night/themes.xml
new file mode 100644
index 0000000..ad0fd96
--- /dev/null
+++ b/src/Notes/res/values-night/themes.xml
@@ -0,0 +1,7 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.Notes" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your dark theme here. -->
+        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/src/Notes/res/values/strings.xml b/src/Notes/res/values/strings.xml
index 55df868..1771bc6 100644
--- a/src/Notes/res/values/strings.xml
+++ b/src/Notes/res/values/strings.xml
@@ -39,6 +39,8 @@
     <string name="file_path">/MIUI/notes/</string>
     <string name="file_name_txt_format">notes_%s.txt</string>
     <!-- notes list string -->
+    <string name="menu_insert_image">Insert image</string>
+    <string name="menu_insert_audio">Insert audio</string>
     <string name="format_folder_files_count">(%d)</string>
     <string name="menu_create_folder">New Folder</string>
     <string name="menu_export_text">Export text</string>
diff --git a/src/Notes/res/values/styles.xml b/src/Notes/res/values/styles.xml
index d750e65..ad0d90d 100644
--- a/src/Notes/res/values/styles.xml
+++ b/src/Notes/res/values/styles.xml
@@ -64,6 +64,6 @@
 
     <style name="NoteActionBarStyle" parent="@android:style/Widget.Holo.Light.ActionBar.Solid">
         <item name="android:displayOptions" />
-        <item name="android:visibility">gone</item>
+        <item name="android:visibility">visible</item>
     </style>
 </resources>
\ No newline at end of file
diff --git a/src/Notes/res/values/themes.xml b/src/Notes/res/values/themes.xml
new file mode 100644
index 0000000..aa02b68
--- /dev/null
+++ b/src/Notes/res/values/themes.xml
@@ -0,0 +1,9 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.Notes" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your light theme here. -->
+        <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
+    </style>
+
+    <style name="Theme.Notes" parent="Base.Theme.Notes" />
+</resources>
\ No newline at end of file
diff --git a/src/Notes/src/net/micode/notes/ui/NoteEditActivity.java b/src/Notes/src/net/micode/notes/ui/NoteEditActivity.java
index 96a9ff8..20f2435 100644
--- a/src/Notes/src/net/micode/notes/ui/NoteEditActivity.java
+++ b/src/Notes/src/net/micode/notes/ui/NoteEditActivity.java
@@ -16,25 +16,45 @@
 
 package net.micode.notes.ui;
 
+import android.Manifest;
 import android.app.Activity;
 import android.app.AlarmManager;
 import android.app.AlertDialog;
 import android.app.PendingIntent;
 import android.app.SearchManager;
 import android.appwidget.AppWidgetManager;
+import android.content.ContentResolver;
 import android.content.ContentUris;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.graphics.Paint;
+import android.media.MediaPlayer;
+import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
+import android.os.Environment;
 import android.preference.PreferenceManager;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+import android.provider.OpenableColumns;
+import android.text.Editable;
+import android.text.Layout;
 import android.text.Spannable;
 import android.text.SpannableString;
+import android.text.SpannableStringBuilder;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
+import android.text.style.AlignmentSpan;
 import android.text.style.BackgroundColorSpan;
+import android.text.style.ClickableSpan;
+import android.text.style.ImageSpan;
+import android.text.style.URLSpan;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -42,11 +62,14 @@ import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
+import android.view.ViewGroup;
 import android.view.WindowManager;
+import android.widget.Button;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
 import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.EditText;
+import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
@@ -65,6 +88,8 @@ import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener;
 import net.micode.notes.widget.NoteWidgetProvider_2x;
 import net.micode.notes.widget.NoteWidgetProvider_4x;
 
+import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -74,6 +99,8 @@ import java.util.regex.Pattern;
 
 public class NoteEditActivity extends Activity implements OnClickListener,
         NoteSettingChangedListener, OnTextViewChangeListener {
+    private static final int PHOTO_REQUEST = 1;
+
     private class HeadViewHolder {
         public TextView tvModified;
 
@@ -119,7 +146,10 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     }
 
     private static final String TAG = "NoteEditActivity";
+    private static final int REQUEST_IMAGE_SELECT = 1;
+    private static final int RECORD_REQUEST = 1987;
 
+    private Uri selectedAudioUri;
     private HeadViewHolder mNoteHeaderHolder;
 
     private View mHeadViewPanel;
@@ -140,12 +170,16 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     private static final String PREFERENCE_FONT_SIZE = "pref_font_size";
 
     private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10;
-
+    private static final int REQUEST_AUDIO_SELECT = 2;
     public static final String TAG_CHECKED = String.valueOf('\u221A');
     public static final String TAG_UNCHECKED = String.valueOf('\u25A1');
 
     private LinearLayout mEditTextList;
 
+    private LinearLayout audioContainer;
+
+    private MediaPlayer mediaPlayer;
+
     private String mUserQuery;
     private Pattern mPattern;
 
@@ -158,6 +192,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             finish();
             return;
         }
+
+        audioContainer = findViewById(R.id.audioContainer);
+
         initResources();
     }
 
@@ -293,8 +330,11 @@ public class NoteEditActivity extends Activity implements OnClickListener,
          * is not ready
          */
         showAlertHeader();
+
+        convertToImage();
     }
 
+
     private void showAlertHeader() {
         if (mWorkingNote.hasClockAlert()) {
             long time = System.currentTimeMillis();
@@ -312,6 +352,97 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         };
     }
 
+    private void convertToImage() {
+        NoteEditText noteEditText = findViewById(R.id.note_edit_view);
+        Editable editable = noteEditText.getEditableText();
+
+        String noteText = editable.toString();
+        int length = editable.length();
+
+        int cursorPositionBeforeInsert = noteEditText.getSelectionStart();
+        // 在光标位置插入换行符
+
+        noteEditText.setSelection(length);
+
+        boolean inserted = false;
+        for (int i = 0; i < length; i++) {
+            for (int j = i; j < length; j++) {
+                String img_fragment = noteText.substring(i, j + 1);
+                if (img_fragment.length() > 15 && img_fragment.endsWith("[/local]") && img_fragment.startsWith("[local]")) {
+                    int limit = 7;
+                    int len = img_fragment.length() - 15;
+                    String path = img_fragment.substring(limit, limit + len);
+                    Bitmap bitmap = BitmapFactory.decodeFile(path);
+                    if (bitmap != null) {
+                        int desiredHeight = 2000;
+                        int originalWidth = bitmap.getWidth();
+                        int originalHeight = bitmap.getHeight();
+                        int desiredWidth = (originalWidth * desiredHeight) / originalHeight;
+
+                        Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, desiredWidth, desiredHeight, false);
+
+                        ImageSpan imageSpan = new ImageSpan(this, scaledBitmap);
+                        String ss = "[local]" + path + "[/local]";
+                        SpannableString spannableString = new SpannableString(ss);
+                        spannableString.setSpan(new AlignmentSpan.Standard(Layout.Alignment.ALIGN_CENTER), 0, ss.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); // 设置居中对齐
+                        spannableString.setSpan(imageSpan, 0, ss.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+
+                        // 添加ClickableSpan，使得点击图片末尾的光标可以和图片对齐
+                        ClickableSpan clickableSpan = new ClickableSpan() {
+                            @Override
+                            public void onClick(View view) {
+                                int selectionEnd = noteEditText.getSelectionEnd();
+                                if (selectionEnd == cursorPositionBeforeInsert) {
+                                    noteEditText.setSelection(cursorPositionBeforeInsert + 1);
+                                }
+                            }
+                        };
+                        spannableString.setSpan(clickableSpan, ss.length(), ss.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+
+                        editable.replace(i, i + len + 15, spannableString);
+
+                        inserted = true;
+                        noteEditText.setSelection(cursorPositionBeforeInsert);
+
+                        ClickableSpan[] spans = editable.getSpans(cursorPositionBeforeInsert, cursorPositionBeforeInsert, ClickableSpan.class);
+                        if (spans != null && spans.length > 0) {
+                            for (ClickableSpan span : spans) {
+                                editable.removeSpan(span);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if (inserted) {
+            editable.append("\n");
+            // 在插入图片后为NoteEditText设置触摸事件监听器
+            noteEditText.setOnTouchListener(new View.OnTouchListener() {
+                @Override
+                public boolean onTouch(View v, MotionEvent event) {
+                    int action = event.getAction();
+                    if (action == MotionEvent.ACTION_DOWN) {
+                        int offset = noteEditText.getOffsetForPosition(event.getX(), event.getY());
+                        ImageSpan[] imageSpans = editable.getSpans(0, editable.length(), ImageSpan.class);
+                        for (ImageSpan span : imageSpans) {
+                            int start = editable.getSpanStart(span);
+                            int end = editable.getSpanEnd(span);
+                            if (offset >= start && offset <= end) {
+                                // 如果光标位于图片所在行，返回true，表示消费了该事件
+                                return true;
+                            }
+                        }
+                    }
+                    return false;
+                }
+            });
+
+        }
+    }
+
+
+
     @Override
     protected void onNewIntent(Intent intent) {
         super.onNewIntent(intent);
@@ -547,12 +678,257 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             case R.id.menu_delete_remind:
                 mWorkingNote.setAlertDate(0, false);
                 break;
+            case R.id.menu_insert_image:
+                Intent loadImage = new Intent(Intent.ACTION_GET_CONTENT);
+                loadImage.addCategory(Intent.CATEGORY_OPENABLE);
+                loadImage.setType("image/*");
+                startActivityForResult(loadImage, PHOTO_REQUEST);
+                break;
+//                Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
+//                startActivityForResult(intent, REQUEST_IMAGE_SELECT);
+            case R.id.menu_insert_audio:
+                Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+                intent.setType("audio/*");
+                startActivityForResult(intent, REQUEST_AUDIO_SELECT);
+//                openAudioSelector();
+                break;
             default:
                 break;
         }
         return true;
     }
 
+
+//    private void openImageSelector() {
+//        Intent intent = new Intent(Intent.ACTION_PICK);
+//        intent.setType("image/*");
+//        startActivityForResult(intent, REQUEST_IMAGE_SELECT);
+//    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
+        super.onActivityResult(requestCode, resultCode, intent);
+        ContentResolver resolver = getContentResolver();
+        switch (requestCode) {
+            case PHOTO_REQUEST:
+                Uri originalUri = intent.getData(); //1.获得图片的真实路径
+                addImage(resolver,originalUri);
+                break;
+            case REQUEST_AUDIO_SELECT:
+                selectedAudioUri = intent.getData();
+                String fileName = getFileName(selectedAudioUri);
+                addAudioComponent(fileName, selectedAudioUri);
+                break;
+
+            default:
+                break;
+        }
+    }
+
+    private String getFileName(Uri uri) {
+        String result = null;
+        if (uri.getScheme().equals("content")) {
+            try (Cursor cursor = getContentResolver().query(uri, null, null, null, null)) {
+                if (cursor != null && cursor.moveToFirst()) {
+                    result = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
+                }
+            }
+        }
+        if (result == null) {
+            result = uri.getPath();
+            int cut = result.lastIndexOf('/');
+            if (cut != -1) {
+                result = result.substring(cut + 1);
+            }
+        }
+        return result;
+    }
+
+
+    private void addImage(ContentResolver resolver,Uri originalUri) {
+        Bitmap bitmap = null;
+        try {
+            bitmap = BitmapFactory.decodeStream(resolver.openInputStream(originalUri));//2.解码图片
+        } catch (FileNotFoundException e) {
+            Log.d(TAG, "onActivityResult: get file_exception");
+            e.printStackTrace();
+        }
+
+        if (bitmap != null) {
+            //3.根据Bitmap对象创建ImageSpan对象
+            Log.d(TAG, "onActivityResult: bitmap is not null");
+            ImageSpan imageSpan = new ImageSpan(NoteEditActivity.this, bitmap);
+            String path = getPath(this, originalUri);
+            //4.使用[local][/local]将path括起来，用于之后方便识别图片路径在note中的位置
+            String img_fragment = "[local]" + path + "[/local]";
+            //创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
+            SpannableString spannableString = new SpannableString(img_fragment);
+            spannableString.setSpan(imageSpan, 0, img_fragment.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+            //5.将选择的图片追加到EditText中光标所在位置
+            NoteEditText e = (NoteEditText) findViewById(R.id.note_edit_view);
+            int index = e.getSelectionStart(); //获取光标所在位置
+            Log.d(TAG, "Index是: " + index);
+            Editable edit_text = e.getEditableText();
+            edit_text.insert(index, spannableString); //将图片插入到光标所在位置
+
+//
+//                    // 添加以下代码来在图片插入后自动换行
+//                    edit_text.insert(index + spannableString.length(), "\n");// 在图片后添加一个换行符
+//
+//                    // 更新光标
+//                    e.setSelection(index + spannableString.length() + 1); // 将光标移动到换行符后面
+
+            mWorkingNote.mContent = e.getText().toString();
+            mWorkingNote.mContent = mWorkingNote.mContent.replaceAll("(?m)^[ \t]*\r?\n", ""); // 删除空白行
+
+
+//                    //6.把改动提交到数据库中,两个数据库表都要改的
+//                    ContentResolver contentResolver = getContentResolver();
+//                    ContentValues contentValues = new ContentValues();
+//                    final long id = mWorkingNote.getNoteId();
+//                    contentValues.put("snippet",mWorkingNote.mContent);
+//                    contentResolver.update(Uri.parse("content://micode_notes/note"), contentValues,"_id=?",new String[]{""+id});
+//                    ContentValues contentValues1 = new ContentValues();
+//                    contentValues1.put("content",mWorkingNote.mContent);
+//                    contentResolver.update(Uri.parse("content://micode_notes/data"), contentValues1,"mime_type=? and note_id=?", new String[]{"vnd.android.cursor.item/text_note",""+id});
+        } else {
+            Toast.makeText(NoteEditActivity.this, "获取图片失败", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private void addAudioComponent(String fileName, final Uri uri) {
+        LinearLayout audioLayout = new LinearLayout(this);
+        audioLayout.setOrientation(LinearLayout.HORIZONTAL);
+        audioLayout.setLayoutParams(new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
+        audioLayout.setPadding(0, 16, 0, 16);
+
+        TextView audioFileName = new TextView(this);
+        audioFileName.setText(fileName);
+        audioFileName.setLayoutParams(new LinearLayout.LayoutParams(
+                0, ViewGroup.LayoutParams.WRAP_CONTENT, 1.0f));
+
+        Button playAudioButton = new Button(this);
+        playAudioButton.setText("Play");
+        playAudioButton.setLayoutParams(new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
+
+        playAudioButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                playAudio(uri);
+            }
+        });
+
+        audioLayout.addView(audioFileName);
+        audioLayout.addView(playAudioButton);
+        audioContainer.addView(audioLayout);
+    }
+
+    private void playAudio(Uri uri) {
+        if (mediaPlayer != null) {
+            mediaPlayer.release();
+        }
+        mediaPlayer = MediaPlayer.create(this, uri);
+        mediaPlayer.start();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (mediaPlayer != null) {
+            mediaPlayer.release();
+            mediaPlayer = null;
+        }
+    }
+
+
+    public String getPath(final Context context, final Uri uri) {
+
+        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
+
+        // DocumentProvider
+        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
+            // ExternalStorageProvider
+            if (isExternalStorageDocument(uri)) {
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                if ("primary".equalsIgnoreCase(type)) {
+                    return Environment.getExternalStorageDirectory() + "/" + split[1];
+                }
+            }
+//            // DownloadsProvider
+            else if (isDownloadsDocument(uri)) {
+                final String id = DocumentsContract.getDocumentId(uri);
+                final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
+                return getDataColumn(context, contentUri, null, null);
+            }
+            // MediaProvider
+            else
+            if (isMediaDocument(uri)) {
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                Uri contentUri = null;
+                if ("image".equals(type)) {
+                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+                }
+
+                final String selection = "_id=?";
+                final String[] selectionArgs = new String[]{split[1]};
+
+                return getDataColumn(context, contentUri, selection, selectionArgs);
+            }
+        }
+        // Media
+        else if ("content".equalsIgnoreCase(uri.getScheme())) {
+            return getDataColumn(context, uri, null, null);
+        }
+        // File
+        else if ("file".equalsIgnoreCase(uri.getScheme())) {
+            return uri.getPath();
+        }
+        return null;
+    }
+
+    //获取数据列_获取此 Uri 的数据列的值。这对MediaStore Uris 和其他基于文件的 ContentProvider。
+    public String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
+
+        Cursor cursor = null;
+        final String column = "_data";
+        final String[] projection = {column};
+
+        try {
+            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
+            if (cursor != null && cursor.moveToFirst()) {
+                final int column_index = cursor.getColumnIndexOrThrow(column);
+                return cursor.getString(column_index);
+            }
+        } finally {
+            if (cursor != null)
+                cursor.close();
+        }
+        return null;
+    }
+    //是否为外部存储文件
+    public boolean isExternalStorageDocument(Uri uri) {
+        return "com.android.externalstorage.documents".equals(uri.getAuthority());
+    }
+
+    //是否为下载文件
+    public boolean isDownloadsDocument(Uri uri) {
+        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
+    }
+    //是否为媒体文件
+    public boolean isMediaDocument(Uri uri) {
+        return "com.android.providers.media.documents".equals(uri.getAuthority());
+    }
+
+
+
     private void setReminder() {
         DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());
         d.setOnDateTimeSetListener(new OnDateTimeSetListener() {
@@ -725,6 +1101,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         return spannable;
     }
 
+
     private View getListItem(String item, int index) {
         View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null);
         final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
@@ -870,4 +1247,6 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     private void showToast(int resId, int duration) {
         Toast.makeText(this, resId, duration).show();
     }
+
+
 }