/* * 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.AlarmManager; import android.app.AlertDialog; import android.app.PendingIntent; import android.app.SearchManager; import android.appwidget.AppWidgetManager; import android.content.ContentUris; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.graphics.Paint; import android.os.Bundle; import android.preference.PreferenceManager; import android.text.Spannable; import android.text.SpannableString; import android.text.TextUtils; import android.text.format.DateUtils; import android.text.style.BackgroundColorSpan; 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.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; /** * NoteEditActivity - 笔记编辑界面的Activity类 */ public class NoteEditActivity extends Activity implements OnClickListener, NoteSettingChangedListener, OnTextViewChangeListener { // 头部视图的ViewHolder类 private class HeadViewHolder { public TextView tvModified; // 修改时间显示文本 public ImageView ivAlertIcon; // 警示图标 public TextView tvAlertDate; // 警示日期显示文本 public ImageView ibSetBgColor; // 设置背景颜色按钮 } // 背景选择按钮对应的颜色Map private static final Map sBgSelectorBtnsMap = new HashMap(); static { sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW); // 黄色背景按钮对应的颜色 sBgSelectorBtnsMap.put(R.id.iv_bg_red, ResourceParser.RED); // 红色背景按钮对应的颜色 sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE); // 蓝色背景按钮对应的颜色 sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN); // 绿色背景按钮对应的颜色 sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE); // 白色背景按钮对应的颜色 } // 背景颜色选择器按钮对应的选中状态Map private static final Map sBgSelectorSelectionMap = new HashMap(); static { sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select); // 黄色背景对应的选中状态按钮 sBgSelectorSelectionMap.put(ResourceParser.RED, R.id.iv_bg_red_select); // 红色背景对应的选中状态按钮 sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select); // 蓝色背景对应的选中状态按钮 sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select); // 绿色背景对应的选中状态按钮 sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select); // 白色背景对应的选中状态按钮 } // 字体大小按钮对应的字体大小Map private static final Map sFontSizeBtnsMap = new HashMap(); static { sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE); // 大号字体按钮对应的字体大小 sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL); // 小号字体按钮对应的字体大小 sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM); // 普通字体按钮对应的字体大小 sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER); // 超大号字体按钮对应的字体大小 } // 字体大小选择器按钮对应的选中状态Map private static final Map sFontSelectorSelectionMap = new HashMap(); static { sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select); // 大号字体对应的选中状态按钮 sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select); // 小号字体对应的选中状态按钮 sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select); // 普通字体对应的选中状态按钮 sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select); // 超大号字体对应的选中状态按钮 } private static final String TAG = "NoteEditActivity"; // 日志标签 private HeadViewHolder mNoteHeaderHolder; // 头部视图的ViewHolder对象 private View mHeadViewPanel; // 头部视图的Panel private View mNoteBgColorSelector; // 笔记背景颜色选择器 private View mFontSizeSelector; // 字体大小选择器 private EditText mNoteEditor; // 笔记编辑器 private View mNoteEditorPanel; // 笔记编辑器的Panel private WorkingNote mWorkingNote; // 笔记对象 private SharedPreferences mSharedPrefs; // SharedPreferences对象 private int mFontSizeId; // 字体大小ID private static final String PREFERENCE_FONT_SIZE = "pref_font_size"; // 字体大小的偏好设置键值 private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10; // 快捷方式图标标题最大长度 public static final String TAG_CHECKED = String.valueOf('\u221A'); // 选中标记 public static final String TAG_UNCHECKED = String.valueOf('\u25A1'); // 未选中标记 private LinearLayout mEditTextList; // 编辑文本列表 private String mUserQuery; // 用户查询关键词 private Pattern mPattern; // 正则表达式模式 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.note_edit); // 设置内容视图 if (savedInstanceState == null && !initActivityState(getIntent())) { finish(); return; } initResources(); // 初始化资源 } /** * 当内存不足时，当前活动可能会被销毁。一旦被销毁，用户再次加载此活动时，我们应该恢复先前的状态 */ @Override protected void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); if (savedInstanceState != null && savedInstanceState.containsKey(Intent.EXTRA_UID)) { Intent intent = new Intent(Intent.ACTION_VIEW); intent.putExtra(Intent.EXTRA_UID, savedInstanceState.getLong(Intent.EXTRA_UID)); if (!initActivityState(intent)) { finish(); return; } Log.d(TAG, "Restoring from killed activity"); } } private boolean initActivityState(Intent intent) { /** * 如果用户指定了Intent.ACTION_VIEW，但没有提供id，则跳转到NotesListActivity */ mWorkingNote = null; if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) { long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0); mUserQuery = ""; /** * 从搜索结果开始 */ 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, "加载笔记失败，笔记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())) { // 新建笔记 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)); // 解析通话记录笔记 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, "通话记录号码为空"); } long noteId = 0; if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(), phoneNumber, callDate)) > 0) { mWorkingNote = WorkingNote.load(this, noteId); if (mWorkingNote == null) { Log.e(TAG, "加载通话记录笔记失败，笔记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未指定操作，不应该支持"); finish(); return false; } mWorkingNote.setOnSettingStatusChangedListener(this); return true; } @Override protected void onResume() { super.onResume(); initNoteScreen(); } private void initNoteScreen() { // 设置笔记编辑器的文本样式 mNoteEditor.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId)); // 根据笔记类型设置编辑器的显示模式 if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { switchToListMode(mWorkingNote.getContent()); } else { // 设置笔记内容，并将光标置于末尾 mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery)); mNoteEditor.setSelection(mNoteEditor.getText().length()); } // 遍历背景选择器的映射表，隐藏所有背景选择器的视图 for (Integer id : sBgSelectorSelectionMap.keySet()) { findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE); } // 设置头部视图和笔记编辑器的背景 mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId()); mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId()); // 显示笔记的修改时间 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: 添加设置提醒菜单。当前禁用，因为 DateTimePicker 还未准备好 */ showAlertHeader(); } // 显示提醒信息的方法 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); /** * 对于没有笔记 id 的新笔记，我们应该先保存它以生成一个 id。 * 如果正在编辑的笔记不值得保存，则没有 id，相当于创建新笔记 */ 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) { // 如果背景颜色选择器可见且触摸事件不在其范围内，隐藏选择器并消费触摸事件 if (mNoteBgColorSelector.getVisibility() == View.VISIBLE && !inRangeOfView(mNoteBgColorSelector, ev)) { mNoteBgColorSelector.setVisibility(View.GONE); return true; } // 如果字体大小选择器可见且触摸事件不在其范围内，隐藏选择器并消费触摸事件 if (mFontSizeSelector.getVisibility() == View.VISIBLE && !inRangeOfView(mFontSizeSelector, ev)) { mFontSizeSelector.setVisibility(View.GONE); return true; } return super.dispatchTouchEvent(ev); } // 判断触摸事件是否在指定视图的范围内 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; } // 初始化资源 private void initResources() { // 获取各个视图的引用 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 = (EditText) 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); // 修复存储资源id的共享偏好设置中的错误 if (mFontSizeId >= TextAppearanceResources.getResourcesSize()) { mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE; } mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list); } @Override protected void onPause() { super.onPause(); // 保存笔记数据并清除设置状态 if (saveNote()) { Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length()); } clearSettingState(); } // 更新小部件 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); } // 点击事件处理 public void onClick(View v) { int id = v.getId(); if (id == R.id.btn_set_bg_color) { // 显示背景颜色选择器 mNoteBgColorSelector.setVisibility(View.VISIBLE); findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( View.VISIBLE); } else if (sBgSelectorBtnsMap.containsKey(id)) { // 切换背景颜色并隐藏选择器 findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( View.GONE); mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id)); mNoteBgColorSelector.setVisibility(View.GONE); } else if (sFontSizeBtnsMap.containsKey(id)) { // 切换字体大小并隐藏选择器 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() { // 如果有设置状态则清除，否则保存笔记并调用父类的方法 if (clearSettingState()) { return; } saveNote(); super.onBackPressed(); } // 清除设置状态 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() { // 设置编辑框和标题栏的背景颜色 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(); // 根据笔记所在文件夹不同加载不同的菜单 if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) { getMenuInflater().inflate(R.menu.call_note_edit, menu); } else { getMenuInflater().inflate(R.menu.note_edit, menu); } // 根据是否是清单模式和是否有闹钟提醒动态设置菜单项显示文本和可见性 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) { // 处理菜单项点击事件 switch (item.getItemId()) { case R.id.menu_new_note: createNewNote(); break; case R.id.menu_delete: // 弹出对话框确认删除当前笔记 AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.alert_title_delete)); builder.setIcon(android.R.drawable.ic_dialog_alert); builder.setMessage(getString(R.string.alert_message_delete_note)); builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { deleteCurrentNote(); finish(); } }); builder.setNegativeButton(android.R.string.cancel, null); builder.show(); break; case R.id.menu_font_size: // 显示字体大小选择器 mFontSizeSelector.setVisibility(View.VISIBLE); findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE); break; case R.id.menu_list_mode: // 切换清单模式和普通模式 mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ? TextNote.MODE_CHECK_LIST : 0); break; case R.id.menu_share: // 分享笔记内容 getWorkingText(); sendTo(this, mWorkingNote.getContent()); break; case R.id.menu_send_to_desktop: // 发送到桌面 sendToDesktop(); break; case R.id.menu_alert: // 设置提醒 setReminder(); break; case R.id.menu_delete_remind: // 取消提醒 mWorkingNote.setAlertDate(0, false); break; default: break; } return true; } private void setReminder() { // 创建日期时间选择对话框，并设置监听器处理用户选择的日期时间 DateTimePickerDialog dialog = new DateTimePickerDialog(this, System.currentTimeMillis()); dialog.setOnDateTimeSetListener(new OnDateTimeSetListener() { public void OnDateTimeSet(AlertDialog dialog, long date) { // 将选择的日期时间设置为提醒时间 mWorkingNote.setAlertDate(date, true); } }); dialog.show(); } /** * 分享笔记内容给支持 Intent.ACTION_SEND 和 text/plain 类型的应用 */ private void sendTo(Context context, String info) { // 创建发送文本的 Intent Intent intent = new Intent(Intent.ACTION_SEND); intent.putExtra(Intent.EXTRA_TEXT, info); intent.setType("text/plain"); context.startActivity(intent); } private void createNewNote() { // 首先保存当前编辑的笔记 saveNote(); // 安全起见，启动一个新的 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()) { // 从数据库中删除当前笔记 // ... } mWorkingNote.markDeleted(true); } private boolean isSyncMode() { return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; } public void onClockAlertChanged(long date, boolean set) { // 用户可能在未保存笔记的情况下设置闹钟提醒，所以在设置提醒之前需要先保存笔记 if (!mWorkingNote.existInDatabase()) { saveNote(); } if (mWorkingNote.getNoteId() > 0) { // 设置闹钟提醒 // ... } else { // 如果用户还未输入内容（笔记不值得保存），提醒用户应该输入内容 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) { // 删除指定索引位置的编辑框，并更新后续编辑框的索引 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) { // 在指定索引位置插入新的编辑框，并更新后续编辑框的索引 if (index > mEditTextList.getChildCount()) { Log.e(TAG, "Index out of mEditTextList boundary, should not happen"); } View view = getListItem(text, index); mEditTextList.addView(view, index); NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); edit.requestFocus(); edit.setSelection(0); for (int i = index + 1; i < mEditTextList.getChildCount(); i++) { ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text)).setIndex(i); } } private void switchToListMode(String text) { // 切换到列表模式，根据文本创建列表项 mEditTextList.removeAllViews(); String[] items = text.split("\n"); int index = 0; for (String item : items) { if (!TextUtils.isEmpty(item)) { mEditTextList.addView(getListItem(item, index)); index++; } } mEditTextList.addView(getListItem("", index)); mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus(); mNoteEditor.setVisibility(View.GONE); mEditTextList.setVisibility(View.VISIBLE); } /** * 根据用户输入的查询内容对全文进行高亮处理 * * @param fullText 待处理的完整文本 * @param userQuery 用户查询内容 * @return 处理后的 Spannable 对象 */ 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; } /** * 创建列表项视图 * * @param item 列表项文本 * @param index 列表项索引 * @return 列表项视图 */ private View getListItem(String item, int index) { // 创建列表项视图 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)); 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); } } }); // 根据列表项内容设置复选框状态和编辑框样式 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(); } // 设置编辑框监听器和索引，并对编辑框内容进行高亮处理 edit.setOnTextViewChangeListener(this); edit.setIndex(index); edit.setText(getHighlightQueryResult(item, mUserQuery)); return view; } /** * 当编辑框内容发生变化时的回调 * * @param index 编辑框索引 * @param hasText 编辑框是否有文本内容 */ public void onTextChange(int index, boolean hasText) { if (index >= mEditTextList.getChildCount()) { Log.e(TAG, "Wrong index, should not happen"); return; } if (hasText) { mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE); } else { mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.GONE); } } /** * 当检查列表模式改变时的回调 * * @param oldMode 旧的模式 * @param newMode 新的模式 */ public void onCheckListModeChanged(int oldMode, int newMode) { if (newMode == TextNote.MODE_CHECK_LIST) { // 切换到列表模式 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); } } /** * 获取正在编辑的文本内容，并根据当前的列表模式进行处理 * * @return 是否存在已勾选的列表项 */ 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); if (!TextUtils.isEmpty(edit.getText())) { if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) { sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n"); hasChecked = true; } else { sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n"); } } } mWorkingNote.setWorkingText(sb.toString()); } else { mWorkingNote.setWorkingText(mNoteEditor.getText().toString()); } return hasChecked; } /** * 保存笔记内容 * * @return 是否成功保存笔记 */ private boolean saveNote() { getWorkingText(); boolean saved = mWorkingNote.saveNote(); if (saved) { // 标识从列表视图到编辑视图有两种模式，打开一个笔记，创建/编辑一个笔记。打开笔记需要返回到列表中的原始位置，而创建一个新的笔记需要返回到列表的顶部。此代码用于标识创建/编辑状态为 RESULT_OK setResult(RESULT_OK); } return saved; } /** * 发送笔记到桌面 */ private void sendToDesktop() { // 在发送消息到主屏幕之前，我们应该确保当前编辑的笔记存在于数据库中。因此，对于新笔记，首先保存它 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 { // 如果用户没有输入任何内容（笔记不值得保存），我们没有笔记id，提醒用户应该输入内容 Log.e(TAG, "Send to desktop error"); showToast(R.string.error_note_empty_for_send_to_desktop); } } /** * 生成桌面快捷图标的标题 * * @param content 笔记内容 * @return 快捷图标标题 */ 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; } /** * 显示Toast消息 * * @param resId 消息内容资源id */ private void showToast(int resId) { Toast.makeText(this, resId, Toast.LENGTH_SHORT).show(); } /** * 显示Toast消息 * * @param resId 消息内容资源id * @param duration 持续时间 */ private void showToast(int resId, int duration) { Toast.makeText(this, resId, duration).show(); } }