/*
 * 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.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.ActivityNotFoundException;
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.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Paint;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.preference.PreferenceManager;
import android.provider.MediaStore;
import android.text.Editable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextUtils;
import android.text.format.DateUtils;
import android.text.style.BackgroundColorSpan;
import android.text.style.ImageSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.TextNote;
import net.micode.notes.model.WorkingNote;
import net.micode.notes.model.WorkingNote.NoteSettingChangedListener;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser;
import net.micode.notes.tool.ResourceParser.TextAppearanceResources;
import net.micode.notes.tool.ImageTool;
import net.micode.notes.tool.AudioTool;
import net.micode.notes.ui.DateTimePickerDialog.OnDateTimeSetListener;
import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener;
import net.micode.notes.widget.NoteWidgetProvider_2x;
import net.micode.notes.widget.NoteWidgetProvider_4x;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class NoteEditActivity extends Activity implements OnClickListener,
        NoteSettingChangedListener, OnTextViewChangeListener {
    private class HeadViewHolder {
        public TextView tvModified;

        public ImageView ivAlertIcon;

        public TextView tvAlertDate;

        public ImageView ibSetBgColor;
    }

    private static final Map<Integer, Integer> sBgSelectorBtnsMap = new HashMap<Integer, Integer>();
    static {
        sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW);
        sBgSelectorBtnsMap.put(R.id.iv_bg_red, ResourceParser.RED);
        sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE);
        sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN);
        sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE);
    }

    private static final Map<Integer, Integer> sBgSelectorSelectionMap = new HashMap<Integer, Integer>();
    static {
        sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select);
        sBgSelectorSelectionMap.put(ResourceParser.RED, R.id.iv_bg_red_select);
        sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select);
        sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select);
        sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select);
    }

    private static final Map<Integer, Integer> sFontSizeBtnsMap = new HashMap<Integer, Integer>();
    static {
        sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE);
        sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL);
        sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM);
        sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER);
    }

    private static final Map<Integer, Integer> sFontSelectorSelectionMap = new HashMap<Integer, Integer>();
    static {
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select);
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select);
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select);
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select);
    }

    private static final String TAG = "NoteEditActivity";

    private HeadViewHolder mNoteHeaderHolder;

    private View mHeadViewPanel;

    private View mNoteBgColorSelector;

    private View mFontSizeSelector;

    private NoteEditText mNoteEditor;

    private View mNoteEditorPanel;

    private WorkingNote mWorkingNote;

    private SharedPreferences mSharedPrefs;
    private int mFontSizeId;

    private static final String PREFERENCE_FONT_SIZE = "pref_font_size";

    private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10;

    public static final String TAG_CHECKED = String.valueOf('\u221A');
    public static final String TAG_UNCHECKED = String.valueOf('\u25A1');

    private LinearLayout mEditTextList;

    private String mUserQuery;
    private Pattern mPattern;

    // 添加图片选择相关常量
    private static final int REQUEST_CODE_SELECT_IMAGE = 1001;
    private static final int REQUEST_CODE_PERMISSION = 1002;
    private static final String PERMISSION_READ_EXTERNAL_STORAGE = android.Manifest.permission.READ_EXTERNAL_STORAGE;

    // 添加音频选择和权限相关常量
    private static final int REQUEST_CODE_SELECT_AUDIO = 1003;
    private static final int REQUEST_CODE_PERMISSION_RECORD = 1004;
    private static final int REQUEST_CODE_PERMISSION_STORAGE = 1005;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.note_edit);

        initResources();

        Intent intent = getIntent();
        mUserQuery = "";
        if (intent.hasExtra(Intent.EXTRA_TEXT)) {
            mUserQuery = intent.getStringExtra(Intent.EXTRA_TEXT);
        }

            if (!initActivityState(intent)) {
                finish();
                return;
            }
        
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            switchToListMode(mWorkingNote.getContent());
        }

        mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
        mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.TEXT_MEDIUM);

        initNoteScreen();
    }

    @Override
    protected void onResume() {
        super.onResume();
        initNoteScreen();
    }

    private boolean initActivityState(Intent intent) {
        /**
         * If the user specified the {@link Intent#ACTION_VIEW} but not provided with id,
         * then jump to the NotesListActivity
         */
        mWorkingNote = null;
        if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) {
            long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0);
            mUserQuery = "";

            /**
             * Starting from the searched result
             */
            if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) {
                noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));
                mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY);
            }

            if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) {
                Intent jump = new Intent(this, NotesListActivity.class);
                startActivity(jump);
                showToast(R.string.error_note_not_exist);
                finish();
                return false;
            } else {
                mWorkingNote = WorkingNote.load(this, noteId);
                if (mWorkingNote == null) {
                    Log.e(TAG, "load note failed with note id" + noteId);
                    finish();
                    return false;
                }
            }
            getWindow().setSoftInputMode(
                    WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
                            | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
        } else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) {
            // New note
            long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0);
            int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID);
            int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE,
                    Notes.TYPE_WIDGET_INVALIDE);
            int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID,
                    ResourceParser.getDefaultBgId(this));

            // Parse call-record note
            String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
            long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0);
            if (callDate != 0 && phoneNumber != null) {
                if (TextUtils.isEmpty(phoneNumber)) {
                    Log.w(TAG, "The call record number is null");
                }
                long noteId = 0;
                if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(),
                        phoneNumber, callDate)) > 0) {
                    mWorkingNote = WorkingNote.load(this, noteId);
                    if (mWorkingNote == null) {
                        Log.e(TAG, "load call note failed with note id" + noteId);
                        finish();
                        return false;
                    }
                } else {
                    mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId,
                            widgetType, bgResId);
                    mWorkingNote.convertToCallNote(phoneNumber, callDate);
                }
            } else {
                mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType,
                        bgResId);
            }

            getWindow().setSoftInputMode(
                    WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE
                            | WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
        } else {
            Log.e(TAG, "Intent not specified action, should not support");
            finish();
            return false;
        }
        mWorkingNote.setOnSettingStatusChangedListener(this);
        return true;
    }

    private void initNoteScreen() {
        mNoteEditor.setOnTextViewChangeListener(this);
        mNoteEditor.setOnClickListener(this);
        mNoteEditor.setTextAppearance(this, TextAppearanceResources
                .getTexAppearanceResource(mFontSizeId));
                
        // 确保编辑框正确设置
        mNoteEditor.setSingleLine(false);
        mNoteEditor.setHorizontallyScrolling(false);
        
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            switchToListMode(mWorkingNote.getContent());
        } else {
            // 保存原始内容
            String originalContent = mWorkingNote.getContent();
            
            // 先处理图片标记
            Spannable content = ImageTool.processPossibleImagesInText(this, originalContent);
            
            // 再处理音频标记，注意传入的是Spannable而非String，避免丢失已处理的图片Span
            content = AudioTool.processAudioMarkers(this, content);
            
            mNoteEditor.setText(content);
        }
        mNoteEditor.setSelection(mNoteEditor.length());
        
        for (Integer id : sBgSelectorSelectionMap.keySet()) {
            findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE);
        }
        mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
        mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
        mNoteEditorPanel.setFocusable(true);
        mNoteEditorPanel.setFocusableInTouchMode(true);
        mNoteEditorPanel.requestFocus();

        mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this,
                mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE
                        | DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME
                        | DateUtils.FORMAT_SHOW_YEAR));

        /**
         * TODO: Add the menu for setting alert. Currently disable it because the DateTimePicker
         * is not ready
         */
        showAlertHeader();
    }

    private void showAlertHeader() {
        if (mWorkingNote.hasClockAlert()) {
            long time = System.currentTimeMillis();
            if (time > mWorkingNote.getAlertDate()) {
                mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired);
            } else {
                mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString(
                        mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS));
            }
            mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE);
            mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE);
        } else {
            mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE);
            mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE);
        };
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        initActivityState(intent);
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        /**
         * For new note without note id, we should firstly save it to
         * generate a id. If the editing note is not worth saving, there
         * is no id which is equivalent to create new note
         */
        if (!mWorkingNote.existInDatabase()) {
            saveNote();
        }
        outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId());
        Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState");
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        if (mNoteBgColorSelector.getVisibility() == View.VISIBLE
                && !inRangeOfView(mNoteBgColorSelector, ev)) {
            mNoteBgColorSelector.setVisibility(View.GONE);
            return true;
        }

        if (mFontSizeSelector.getVisibility() == View.VISIBLE
                && !inRangeOfView(mFontSizeSelector, ev)) {
            mFontSizeSelector.setVisibility(View.GONE);
            return true;
        }
        return super.dispatchTouchEvent(ev);
    }

    private boolean inRangeOfView(View view, MotionEvent ev) {
        int []location = new int[2];
        view.getLocationOnScreen(location);
        int x = location[0];
        int y = location[1];
        if (ev.getX() < x
                || ev.getX() > (x + view.getWidth())
                || ev.getY() < y
                || ev.getY() > (y + view.getHeight())) {
                    return false;
                }
        return true;
    }

    private void initResources() {
        mHeadViewPanel = findViewById(R.id.note_title);
        mNoteHeaderHolder = new HeadViewHolder();
        mNoteHeaderHolder.tvModified = (TextView) findViewById(R.id.tv_modified_date);
        mNoteHeaderHolder.ivAlertIcon = (ImageView) findViewById(R.id.iv_alert_icon);
        mNoteHeaderHolder.tvAlertDate = (TextView) findViewById(R.id.tv_alert_date);
        mNoteHeaderHolder.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color);
        mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this);
        mNoteEditor = (NoteEditText) findViewById(R.id.note_edit_view);
        mNoteEditorPanel = findViewById(R.id.sv_note_edit);
        mNoteBgColorSelector = findViewById(R.id.note_bg_color_selector);
        for (int id : sBgSelectorBtnsMap.keySet()) {
            ImageView iv = (ImageView) findViewById(id);
            iv.setOnClickListener(this);
        }

        mFontSizeSelector = findViewById(R.id.font_size_selector);
        for (int id : sFontSizeBtnsMap.keySet()) {
            View view = findViewById(id);
            view.setOnClickListener(this);
        };
        mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
        mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE);
        /**
         * HACKME: Fix bug of store the resource id in shared preference.
         * The id may larger than the length of resources, in this case,
         * return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE}
         */
        if(mFontSizeId >= TextAppearanceResources.getResourcesSize()) {
            mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE;
        }
        mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list);
    }

    @Override
    protected void onPause() {
        super.onPause();
        if(saveNote()) {
            Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length());
        }
        clearSettingState();
    }

    private void updateWidget() {
        Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
        if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) {
            intent.setClass(this, NoteWidgetProvider_2x.class);
        } else if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_4X) {
            intent.setClass(this, NoteWidgetProvider_4x.class);
        } else {
            Log.e(TAG, "Unspported widget type");
            return;
        }

        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
            mWorkingNote.getWidgetId()
        });

        sendBroadcast(intent);
        setResult(RESULT_OK, intent);
    }

    public void onClick(View v) {
        int id = v.getId();
        if (id == R.id.btn_set_bg_color) {
            mNoteBgColorSelector.setVisibility(View.VISIBLE);
            findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
                    -                    View.VISIBLE);
        } else if (sBgSelectorBtnsMap.containsKey(id)) {
            findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
                    View.GONE);
            mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id));
            mNoteBgColorSelector.setVisibility(View.GONE);
        } else if (sFontSizeBtnsMap.containsKey(id)) {
            findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.GONE);
            mFontSizeId = sFontSizeBtnsMap.get(id);
            mSharedPrefs.edit().putInt(PREFERENCE_FONT_SIZE, mFontSizeId).commit();
            findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
            if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
                getWorkingText();
                switchToListMode(mWorkingNote.getContent());
            } else {
                mNoteEditor.setTextAppearance(this,
                        TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
            }
            mFontSizeSelector.setVisibility(View.GONE);
        }
    }

    @Override
    public void onBackPressed() {
        if(clearSettingState()) {
            return;
        }

        saveNote();
        super.onBackPressed();
    }

    private boolean clearSettingState() {
        if (mNoteBgColorSelector.getVisibility() == View.VISIBLE) {
            mNoteBgColorSelector.setVisibility(View.GONE);
            return true;
        } else if (mFontSizeSelector.getVisibility() == View.VISIBLE) {
            mFontSizeSelector.setVisibility(View.GONE);
            return true;
        }
        return false;
    }

    public void onBackgroundColorChanged() {
        findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
                View.VISIBLE);
        mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
        mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        if (isFinishing()) {
            return true;
        }
        clearSettingState();
        menu.clear();
        if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) {
            getMenuInflater().inflate(R.menu.call_note_edit, menu);
        } else {
            getMenuInflater().inflate(R.menu.note_edit, menu);
        }
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_normal_mode);
        } else {
            menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_list_mode);
        }
        if (mWorkingNote.hasClockAlert()) {
            menu.findItem(R.id.menu_alert).setVisible(false);
        } else {
            menu.findItem(R.id.menu_delete_remind).setVisible(false);
        }
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (mWorkingNote == null) {
            finish();
            return true;
        }

        switch (item.getItemId()) {
            case R.id.menu_new_note:
                createNewNote();
                break;
            case R.id.menu_delete:
                                deleteCurrentNote();
                break;
            case R.id.menu_font_size:
                showFontSizePickerDialog();
                break;
            case R.id.menu_list_mode:
                mWorkingNote.setCheckListMode(
                    mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST ? 0 : TextNote.MODE_CHECK_LIST
                );
                break;
            case R.id.menu_share:
                getWorkingText();
                sendTo(this, mWorkingNote.getContent());
                break;
            case R.id.menu_send_to_desktop:
                sendToDesktop();
                break;
            case R.id.menu_alert:
                setReminder();
                break;
            case R.id.menu_delete_remind:
                mWorkingNote.setAlertDate(0, false);
                break;
            case R.id.menu_insert_image:
                selectImage();
                break;
            case R.id.menu_insert_audio:
                showAudioInsertOptions();
                break;
            default:
                break;
        }
        return true;
    }

    /**
     * 显示字体大小选择对话框
     */
    private void showFontSizePickerDialog() {
        mFontSizeSelector.setVisibility(View.VISIBLE);
        findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
    }

    /**
     * 显示音频插入选项对话框
     */
    private void showAudioInsertOptions() {
        // 直接调用选择音频文件，不再显示选项对话框
        selectAudioFile();
    }

    /**
     * 检查录音权限并开始录音
     */
    private void checkRecordPermissionAndRecord() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (checkSelfPermission(android.Manifest.permission.RECORD_AUDIO) != android.content.pm.PackageManager.PERMISSION_GRANTED) {
                requestPermissions(new String[]{android.Manifest.permission.RECORD_AUDIO}, REQUEST_CODE_PERMISSION_RECORD);
                return;
            }
        }
        showRecordAudioDialog();
    }

    /**
     * 显示录音对话框
     */
    private void showRecordAudioDialog() {
        AudioRecorderDialog dialog = new AudioRecorderDialog(this, new AudioRecorderDialog.OnAudioRecordListener() {
            @Override
            public void onAudioRecorded(String audioFileName) {
                if (audioFileName != null) {
                    insertAudioTag(audioFileName);
                    Toast.makeText(NoteEditActivity.this, R.string.audio_record_saved, Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(NoteEditActivity.this, R.string.audio_record_failed, Toast.LENGTH_SHORT).show();
                }
            }
        });
        dialog.show();
    }

    /**
     * 选择音频文件
     */
    private void selectAudioFile() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (checkSelfPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE) != android.content.pm.PackageManager.PERMISSION_GRANTED) {
                requestPermissions(new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE}, REQUEST_CODE_PERMISSION_STORAGE);
                return;
            }
        }

        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("audio/*");
        try {
            startActivityForResult(Intent.createChooser(intent, getString(R.string.audio_select_title)), REQUEST_CODE_SELECT_AUDIO);
        } catch (android.content.ActivityNotFoundException e) {
            Toast.makeText(this, R.string.audio_select_failed, Toast.LENGTH_SHORT).show();
        }
    }

    /**
     * 在笔记中插入音频标记
     */
    private void insertAudioTag(String audioFileName) {
        try {
            if (TextUtils.isEmpty(audioFileName)) {
                return;
            }

            // 如果是在列表模式，需要先获取内容
            if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
                getWorkingText();
            }

            // 创建音频引用标记
            String audioTag = "[音频:" + audioFileName + "]";
            
            // 创建音频图标Span
            ImageSpan audioSpan = new ImageSpan(this, R.drawable.ic_audio_file);
            SpannableString spannableString = new SpannableString(audioTag);
            spannableString.setSpan(audioSpan, 0, audioTag.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            
            // 获取光标位置，插入音频标记
            EditText editor = (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) ? null : mNoteEditor;
            if (editor != null) {
                int selectionStart = editor.getSelectionStart();
                Editable editable = editor.getText();
                
                // 在光标位置插入换行和音频标记
                editable.insert(selectionStart, "\n");
                editable.insert(selectionStart + 1, spannableString);
                editable.insert(selectionStart + 1 + audioTag.length(), "\n");
            } else {
                // 在列表模式下，直接添加到内容末尾
                String content = mWorkingNote.getContent();
                if (!TextUtils.isEmpty(content) && !content.endsWith("\n")) {
                    content += "\n";
                }
                content += audioTag + "\n";
                mWorkingNote.setWorkingText(content);
                switchToListMode(content);
            }

            // 保存笔记
            saveNote();
            
        } catch (Exception e) {
            Log.e(TAG, "Failed to insert audio", e);
            Toast.makeText(this, R.string.audio_insert_failed, Toast.LENGTH_SHORT).show();
        }
    }

    private void setReminder() {
        DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());
        d.setOnDateTimeSetListener(new OnDateTimeSetListener() {
            public void OnDateTimeSet(AlertDialog dialog, long date) {
                mWorkingNote.setAlertDate(date	, true);
            }
        });
        d.show();
    }

    /**
     * Share note to apps that support {@link Intent#ACTION_SEND} action
     * and {@text/plain} type
     */
    private void sendTo(Context context, String info) {
        Intent intent = new Intent(Intent.ACTION_SEND);
        intent.putExtra(Intent.EXTRA_TEXT, info);
        intent.setType("text/plain");
        context.startActivity(intent);
    }

    private void createNewNote() {
        // Firstly, save current editing notes
        saveNote();

        // For safety, start a new NoteEditActivity
        finish();
        Intent intent = new Intent(this, NoteEditActivity.class);
        intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
        intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());
        startActivity(intent);
    }

    private void deleteCurrentNote() {
        if (mWorkingNote.existInDatabase()) {
            HashSet<Long> ids = new HashSet<Long>();
            long id = mWorkingNote.getNoteId();
            if (id != Notes.ID_ROOT_FOLDER) {
                ids.add(id);
                
                // 直接删除笔记，不移动到回收站
                if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) {
                    Log.e(TAG, "Delete note error");
                }
            } else {
                Log.d(TAG, "Wrong note id, should not happen");
                }
            }
        finish();
    }

    private boolean isSyncMode() {
        return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
    }

    public void onClockAlertChanged(long date, boolean set) {
        /**
         * User could set clock to an unsaved note, so before setting the
         * alert clock, we should save the note first
         */
        if (!mWorkingNote.existInDatabase()) {
            saveNote();
        }
        if (mWorkingNote.getNoteId() > 0) {
            Intent intent = new Intent(this, AlarmReceiver.class);
            intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId()));
            PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
            AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE));
            showAlertHeader();
            if(!set) {
                alarmManager.cancel(pendingIntent);
            } else {
                alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent);
            }
        } else {
            /**
             * There is the condition that user has input nothing (the note is
             * not worthy saving), we have no note id, remind the user that he
             * should input something
             */
            Log.e(TAG, "Clock alert setting error");
            showToast(R.string.error_note_empty_for_clock);
        }
    }

    public void onWidgetChanged() {
        updateWidget();
    }

    public void onEditTextDelete(int index, String text) {
        int childCount = mEditTextList.getChildCount();
        if (childCount == 1) {
            return;
        }

        for (int i = index + 1; i < childCount; i++) {
            ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
                    .setIndex(i - 1);
        }

        mEditTextList.removeViewAt(index);
        NoteEditText edit = null;
        if(index == 0) {
            edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById(
                    R.id.et_edit_text);
        } else {
            edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById(
                    R.id.et_edit_text);
        }
        int length = edit.length();
        edit.append(text);
        edit.requestFocus();
        edit.setSelection(length);
    }

    public void onEditTextEnter(int index, String text) {
        try {
            // 获取当前子视图数量
            int childCount = mEditTextList.getChildCount();

            // 处理空列表情况（初始状态）
            if (childCount == 0) {
                View newView = getListItem(text, 0);
                mEditTextList.addView(newView);
                NoteEditText newEdit = (NoteEditText) newView.findViewById(R.id.et_edit_text);
                newEdit.requestFocus();
                return;
            }

            // 限制索引不超过最大有效位置
            index = Math.min(index, childCount - 1);

            // 获取当前行视图
            View currentView = mEditTextList.getChildAt(index);
            if (currentView == null) return;

            NoteEditText currentEdit = (NoteEditText) currentView.findViewById(R.id.et_edit_text);
            if (currentEdit == null) return;

            // 分割当前行文本（保留光标位置）
            String currentText = currentEdit.getText().toString();
            int cursorPos = currentEdit.getSelectionStart();
            String prefix = currentText.substring(0, cursorPos);
            String suffix = currentText.substring(cursorPos);

            // 更新当前行内容为光标前部分
            currentEdit.setText(prefix);
            currentEdit.setSelection(prefix.length());

            // 创建新行，内容为光标后部分（支持空内容）
            View newView = getListItem(suffix, index + 1);
            mEditTextList.addView(newView, index + 1);

            // 设置新行焦点
            NoteEditText newEdit = (NoteEditText) newView.findViewById(R.id.et_edit_text);
            newEdit.requestFocus();
            newEdit.setSelection(0);

            // 更新后续行索引（从index+2开始，因为新行在index+1）
            for (int i = index + 2; i < mEditTextList.getChildCount(); i++) {
                NoteEditText childEdit = (NoteEditText) mEditTextList.getChildAt(i)
                        .findViewById(R.id.et_edit_text);
                childEdit.setIndex(i - 1);
            }
        } catch (Exception e) {
            Log.e(TAG, "onEditTextEnter error: " + e.getMessage(), e);
        }
    }

    private void switchToListMode(String text) {
        mEditTextList.removeAllViews();

        // 特殊处理：保留音频和图片标记
        String processedText = text;
        if (!TextUtils.isEmpty(processedText)) {
            // 分割文本但保留特殊标记
            String[] items = processedText.split("\n");
            int index = 0;

            for (String item : items) {
                if (!TextUtils.isEmpty(item.trim())) {
                    View view = getListItem(item, index);
                    mEditTextList.addView(view, index);
                    index++;
                }
            }
        }

        // 确保至少有一个空行可编辑
        if (mEditTextList.getChildCount() == 0) {
            View emptyView = getListItem("", 0);
            mEditTextList.addView(emptyView, 0);
        }

        // 设置焦点到最后一行
        NoteEditText lastEdit = (NoteEditText) mEditTextList.getChildAt(mEditTextList.getChildCount() - 1)
                .findViewById(R.id.et_edit_text);
        lastEdit.requestFocus();

        mNoteEditor.setVisibility(View.GONE);
        mEditTextList.setVisibility(View.VISIBLE);
    }


    private Spannable getHighlightQueryResult(String fullText, String userQuery) {
        SpannableString spannable = new SpannableString(fullText == null ? "" : fullText);
        if (!TextUtils.isEmpty(userQuery)) {
            mPattern = Pattern.compile(userQuery);
            Matcher m = mPattern.matcher(fullText);
            int start = 0;
            while (m.find(start)) {
                spannable.setSpan(
                        new BackgroundColorSpan(this.getResources().getColor(
                                R.color.user_query_highlight)), m.start(), m.end(),
                        Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
                start = m.end();
            }
        }
        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);
        edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
        CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item));

        if (item.contains("[图片:")) {
            cb.setVisibility(View.GONE);
            // 处理图片标记
            edit.setText(ImageTool.processPossibleImagesInText(this, item));
        } else if (item.contains("[音频:")) {
            cb.setVisibility(View.GONE);
            // 处理音频标记
            edit.setText(AudioTool.processAudioMarkers(this, item));
        } else {
        cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
                } else {
                    edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
                }
            }
        });

        if (item.startsWith(TAG_CHECKED)) {
            cb.setChecked(true);
            edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
            item = item.substring(TAG_CHECKED.length(), item.length()).trim();
        } else if (item.startsWith(TAG_UNCHECKED)) {
            cb.setChecked(false);
            edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
            item = item.substring(TAG_UNCHECKED.length(), item.length()).trim();
            }

            edit.setText(getHighlightQueryResult(item, mUserQuery));
        }

        edit.setOnTextViewChangeListener(this);
        edit.setIndex(index);
        return view;
    }

    public void onTextChange(int index, boolean hasText) {
        try {
            // 安全检查：索引是否有效
            if (index < 0 || index >= mEditTextList.getChildCount()) {
                Log.w(TAG, "Invalid index in onTextChange: " + index);
                return;
            }

            View view = mEditTextList.getChildAt(index);
            if (view == null) return;

            CheckBox cb = (CheckBox) view.findViewById(R.id.cb_edit_item);
            if (cb == null) return;

            // 根据内容显示/隐藏复选框
            cb.setVisibility(hasText ? View.VISIBLE : View.GONE);
        } catch (Exception e) {
            Log.e(TAG, "onTextChange error: " + e.getMessage(), e);
        }
    }

    public void onCheckListModeChanged(int oldMode, int newMode) {
        if (newMode == TextNote.MODE_CHECK_LIST) {
            switchToListMode(mNoteEditor.getText().toString());
        } else {
            if (!getWorkingText()) {
                mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ",
                        ""));
            }
            mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
            mEditTextList.setVisibility(View.GONE);
            mNoteEditor.setVisibility(View.VISIBLE);
        }
    }

    private boolean getWorkingText() {
        boolean hasChecked = false;
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < mEditTextList.getChildCount(); i++) {
                View view = mEditTextList.getChildAt(i);
                NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
                String itemText = edit.getText().toString().trim(); // 去除前后空格
                if (!TextUtils.isEmpty(itemText)) { // 忽略完全空的行
                    CheckBox cb = (CheckBox) view.findViewById(R.id.cb_edit_item);
                    if (cb.isChecked()) {
                        sb.append(TAG_CHECKED).append(" ").append(itemText).append("\n");
                        hasChecked = true;
                    } else {
                        sb.append(TAG_UNCHECKED).append(" ").append(itemText).append("\n");
                    }
                }
            }
            mWorkingNote.setWorkingText(sb.toString());
        } else {
            mWorkingNote.setWorkingText(mNoteEditor.getText().toString());
        }
        return hasChecked;
    }

    private boolean saveNote() {
        getWorkingText();
        boolean saved = mWorkingNote.saveNote();
        if (saved) {
            /**
             * There are two modes from List view to edit view, open one note,
             * create/edit a node. Opening node requires to the original
             * position in the list when back from edit view, while creating a
             * new node requires to the top of the list. This code
             * {@link #RESULT_OK} is used to identify the create/edit state
             */
            setResult(RESULT_OK);
        }
        return saved;
    }

    private void sendToDesktop() {
        /**
         * Before send message to home, we should make sure that current
         * editing note is exists in databases. So, for new note, firstly
         * save it
         */
        if (!mWorkingNote.existInDatabase()) {
            saveNote();
        }

        if (mWorkingNote.getNoteId() > 0) {
            Intent sender = new Intent();
            Intent shortcutIntent = new Intent(this, NoteEditActivity.class);
            shortcutIntent.setAction(Intent.ACTION_VIEW);
            shortcutIntent.putExtra(Intent.EXTRA_UID, mWorkingNote.getNoteId());
            sender.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
            sender.putExtra(Intent.EXTRA_SHORTCUT_NAME,
                    makeShortcutIconTitle(mWorkingNote.getContent()));
            sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
                    Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app));
            sender.putExtra("duplicate", true);
            sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
            showToast(R.string.info_note_enter_desktop);
            sendBroadcast(sender);
        } else {
            /**
             * There is the condition that user has input nothing (the note is
             * not worthy saving), we have no note id, remind the user that he
             * should input something
             */
            Log.e(TAG, "Send to desktop error");
            showToast(R.string.error_note_empty_for_send_to_desktop);
        }
    }

    private String makeShortcutIconTitle(String content) {
        content = content.replace(TAG_CHECKED, "");
        content = content.replace(TAG_UNCHECKED, "");
        return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0,
                SHORTCUT_ICON_TITLE_MAX_LEN) : content;
    }

    private void showToast(int resId) {
        showToast(resId, Toast.LENGTH_SHORT);
    }

    private void showToast(int resId, int duration) {
        Toast.makeText(this, resId, duration).show();
    }

    @Override
    protected void onDestroy() {
        if (mWorkingNote != null) {
            mWorkingNote.setOnSettingStatusChangedListener(null);
        }
        super.onDestroy();
    }

    private void setTextViewBackground() {
        mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
    }

    /**
     * 选择图片
     */
    /**
     * 选择图片（支持从相册、下载目录等多种来源选择）
     */
    /**
     * 选择图片（支持从相册、下载目录等多种来源选择）
     */
    private void selectImage() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
                    != PackageManager.PERMISSION_GRANTED) {
                requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
                        REQUEST_CODE_PERMISSION);
                return;
            }
        }

        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("image/*");
        intent.addCategory(Intent.CATEGORY_OPENABLE);

        try {
            // 创建选择器意图
            Intent chooser = Intent.createChooser(intent, getString(R.string.image_select_title));

            // 特别添加指向下载目录的选项（仅当下载目录可访问时）
            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
                Intent downloadIntent = new Intent(Intent.ACTION_VIEW);
                downloadIntent.setDataAndType(
                        Uri.fromFile(Environment.getExternalStoragePublicDirectory(
                                Environment.DIRECTORY_DOWNLOADS)),
                        "resource/folder"
                );

                // 检查是否有应用能处理这个Intent
                if (downloadIntent.resolveActivity(getPackageManager()) != null) {
                    chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS,
                            new Intent[]{downloadIntent});
                }
            }

            startActivityForResult(chooser, REQUEST_CODE_SELECT_IMAGE);
        } catch (ActivityNotFoundException e) {
            Toast.makeText(this, R.string.no_file_manager, Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_CODE_PERMISSION) {
            if (grantResults.length > 0 && grantResults[0] == android.content.pm.PackageManager.PERMISSION_GRANTED) {
                selectImage();
            } else {
                Toast.makeText(this, R.string.image_permission_denied, Toast.LENGTH_SHORT).show();
            }
        } else if (requestCode == REQUEST_CODE_PERMISSION_RECORD) {
            if (grantResults.length > 0 && grantResults[0] == android.content.pm.PackageManager.PERMISSION_GRANTED) {
                showRecordAudioDialog();
            } else {
                Toast.makeText(this, R.string.audio_permission_denied, Toast.LENGTH_SHORT).show();
            }
        } else if (requestCode == REQUEST_CODE_PERMISSION_STORAGE) {
            if (grantResults.length > 0 && grantResults[0] == android.content.pm.PackageManager.PERMISSION_GRANTED) {
                selectAudioFile();
            } else {
                Toast.makeText(this, R.string.image_permission_denied, Toast.LENGTH_SHORT).show();
            }
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE_SELECT_IMAGE && resultCode == RESULT_OK && data != null) {
            try {
                Uri selectedImageUri = data.getData();
                if (selectedImageUri != null) {
                    insertImage(selectedImageUri);
            }
        } catch (Exception e) {
                Log.e(TAG, "Failed to insert image", e);
                Toast.makeText(this, R.string.image_insert_failed, Toast.LENGTH_SHORT).show();
            }
        } else if (requestCode == REQUEST_CODE_SELECT_AUDIO && resultCode == RESULT_OK && data != null) {
            try {
                Uri selectedAudioUri = data.getData();
                if (selectedAudioUri != null) {
                    processSelectedAudio(selectedAudioUri);
                }
            } catch (Exception e) {
                Log.e(TAG, "Failed to insert audio", e);
                Toast.makeText(this, R.string.audio_insert_failed, Toast.LENGTH_SHORT).show();
            }
        }
    }

    /**
     * 插入图片到笔记中
     */
    private void insertImage(Uri imageUri) {
        if (imageUri == null) {
            return;
        }

        try {
            // 保存编辑状态
            if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
                getWorkingText();
            }

            // 从URI加载位图
            Bitmap bitmap = ImageTool.getBitmapFromUri(this, imageUri);
            if (bitmap == null) {
                Toast.makeText(this, R.string.image_load_failed, Toast.LENGTH_SHORT).show();
                return;
            }

            // 压缩大图片
            int maxSize = 1024;
            if (bitmap.getWidth() > maxSize || bitmap.getHeight() > maxSize) {
                float scale = Math.min((float)maxSize / bitmap.getWidth(), (float)maxSize / bitmap.getHeight());
                int newWidth = (int)(bitmap.getWidth() * scale);
                int newHeight = (int)(bitmap.getHeight() * scale);
                
                Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, true);
                bitmap.recycle();
                bitmap = scaledBitmap;
            }
            
            // 保存图片到文件
            String filename = ImageTool.saveBitmapToFile(this, bitmap);
            bitmap.recycle();
            
            if (filename == null) {
                Toast.makeText(this, R.string.image_insert_failed, Toast.LENGTH_SHORT).show();
                return;
            }

            // 创建图片标记
            String imageTag = "[图片:" + filename + "]";
            
            // 插入图片标记并设置文本
            if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
                // 列表模式
                String content = mWorkingNote.getContent();
                if (content.length() > 0 && !content.endsWith("\n")) {
                    content += "\n";
                }
                content += imageTag + "\n";
                mWorkingNote.setWorkingText(content);
                switchToListMode(content);
            } else {
                // 正常编辑模式
                int selectionStart = mNoteEditor.getSelectionStart();
                Editable editable = mNoteEditor.getText();
                editable.insert(selectionStart, "\n" + imageTag + "\n");
                
                // 重新设置文本以显示图片
                mNoteEditor.setText(ImageTool.processPossibleImagesInText(this, editable.toString()));
                mNoteEditor.setSelection(selectionStart + imageTag.length() + 2);
            }
            
            // 保存笔记
            saveNote();
            
        } catch (Exception e) {
            Log.e(TAG, "插入图片失败", e);
            Toast.makeText(this, R.string.image_insert_failed, Toast.LENGTH_SHORT).show();
        }
    }

    /**
     * 处理选择的音频文件
     */
    private void processSelectedAudio(Uri audioUri) {
        if (audioUri == null) {
            return;
        }
        
        // 复制音频文件到应用私有目录
        String fileName = AudioTool.copyAudioToPrivateStorage(this, audioUri);
        if (fileName != null) {
            // 在笔记中插入音频标记
            insertAudioTag(fileName);
        } else {
            Toast.makeText(this, R.string.audio_insert_failed, Toast.LENGTH_SHORT).show();
        }
    }
}
