开源项目之Android繁体中文输入法

一款功能强大的输入法，集合 “广东话、拼音、仓颉、速成”四种常用中文输入法，以及英文、数字及符号键盘，一按独立切换键即可变更。同一键盘可作中英文输入，无需切换，支持联想字功能，融合英汉字典。
　　繁体中文输入工具是一款功能强大的输入法，集合 "广东话、拼音、仓颉、速成"四种常用中文输入法，以及英文、数字及符号键盘，一按独立切换键即可变更。同一键盘可作中英文输入，无需切换，支持联想字功能，融合英汉字典。
Android 繁体中文输入法基于 Android 输入法框架开发，代码力求小巧可读。

如图：

该项目总共20个目标文件！~

AbstractIME是抽象类，实现对输入方法的管理！~定义如下：

public abstract class AbstractIME extends InputMethodService implementsKeyboardView.OnKeyboardActionListener,CandidateView.CandidateViewListener

InputMethodService为android输入方式服务！~

CandidatesContainer是实现向前或向后移动以及翻转等操作！~

CandidateView是视图显示候选字！

CangjieDictionary 是词典！

Editor是编辑和处理显示！

CangjieIME继承AbstractIME，实现对输入方法的管理！~

CangjieTable是字母和计算指数的定义！

DictionaryLoader是线程类，实现对词典的加载！

ImePreferenceActivity是输入法的主要界面！

KeyboardSwitch是软键盘的切换！（中英切换）

PhraseDictionary是读短语字典以及提供参考字符！

SoftKeyboard继承Keyboard，实现对软键盘的管理！

SoftKeyboardView显示软键盘键，渲染和检测按键。

SoundMotionEffect是对应键盘的声音提示！

WordDictionary是词典！

ZhuyinDictionary继承WordDictionary实现对词典中读取字！

ZhuyinEditor继承Editor实现编辑框!

ZhuyinIME继承AbstractIME，实现对输入方法的管理！~

ZhuyinTable实现笔画显示！

程序定义了两个输入法服务，定义如下：

        <service            android:name="ZhuyinIME"            android:label="@string/zhuyin_ime_name"            android:permission="android.permission.BIND_INPUT_METHOD" >            <intent-filter>                <action android:name="android.view.InputMethod" />            </intent-filter>            <meta-data                android:name="android.view.im"                android:resource="@xml/method" />        </service>        <service            android:name="CangjieIME"            android:label="@string/cangjie_ime_name"            android:permission="android.permission.BIND_INPUT_METHOD" >            <intent-filter>                <action android:name="android.view.InputMethod" />            </intent-filter>            <meta-data                android:name="android.view.im"                android:resource="@xml/method" />        </service>

主要的操作是在AbstractIME类中

//抽象类public abstract class AbstractIME extends InputMethodService implementsKeyboardView.OnKeyboardActionListener,CandidateView.CandidateViewListener{//显示软键盘，使按键和按键检测protected SoftKeyboardView inputView;//包含所有候选人页面，用户可以向前移动（见下页）或向后移动（上一）页，这些候选人中选择一个。private CandidatesContainer candidatesContainer;//软盘切换private KeyboardSwitch keyboardSwitch;//编辑框private Editor editor;//词典private WordDictionary wordDictionary;//推荐词private PhraseDictionary phraseDictionary;//对应键的声音private SoundMotionEffect effect;private int orientation;protected abstract KeyboardSwitch createKeyboardSwitch(Context context);protected abstract Editor createEditor();protected abstract WordDictionary createWordDictionary(Context context);@Overridepublic void onCreate(){super.onCreate();//初始化keyboardSwitch = createKeyboardSwitch(this);editor = createEditor();wordDictionary = createWordDictionary(this);phraseDictionary = new PhraseDictionary(this);effect = new SoundMotionEffect(this);orientation = getResources().getConfiguration().orientation;// Use the following line to debug IME service.// android.os.Debug.waitForDebugger();}@Overridepublic void onConfigurationChanged(Configuration newConfig){if (orientation != newConfig.orientation){// Clear composing text and candidates for orientation change.escape();orientation = newConfig.orientation;}super.onConfigurationChanged(newConfig);}//更新节点@Overridepublic void onUpdateSelection(int oldSelStart, int oldSelEnd,int newSelStart, int newSelEnd, int candidatesStart,int candidatesEnd){super.onUpdateSelection(oldSelStart, oldSelEnd, newSelStart, newSelEnd,candidatesStart, candidatesEnd);if ((candidatesEnd != -1)&& ((newSelStart != candidatesEnd) || (newSelEnd != candidatesEnd))){// Clear composing text and its candidates for cursor movement.escape();}// Update the caps-lock status for the current cursor position.updateCursorCapsToInputView();}//插入@Overridepublic void onComputeInsets(InputMethodService.Insets outInsets){super.onComputeInsets(outInsets);outInsets.contentTopInsets = outInsets.visibleTopInsets;}@Overridepublic View onCreateInputView(){inputView = (SoftKeyboardView) getLayoutInflater().inflate(R.layout.input, null);inputView.setOnKeyboardActionListener(this);return inputView;}@Overridepublic View onCreateCandidatesView(){candidatesContainer = (CandidatesContainer) getLayoutInflater().inflate(R.layout.candidates, null);candidatesContainer.setCandidateViewListener(this);return candidatesContainer;}//开始@Overridepublic void onStartInputView(EditorInfo attribute, boolean restarting){super.onStartInputView(attribute, restarting);// Reset editor and candidates when the input-view is just being// started.editor.start(attribute.inputType);clearCandidates();effect.reset();keyboardSwitch.initializeKeyboard(getMaxWidth());// Select a keyboard based on the input type of the editing field.keyboardSwitch.onStartInput(attribute.inputType);bindKeyboardToInputView();}//完成输入@Overridepublic void onFinishInput(){// Clear composing as any active composing text will be finished, same// as in// onFinishInputView, onFinishCandidatesView, and onUnbindInput.editor.clearComposingText(getCurrentInputConnection());super.onFinishInput();}//完成输入@Overridepublic void onFinishInputView(boolean finishingInput){editor.clearComposingText(getCurrentInputConnection());super.onFinishInputView(finishingInput);// Dismiss any pop-ups when the input-view is being finished and hidden.inputView.closing();}//候选词取完毕@Overridepublic void onFinishCandidatesView(boolean finishingInput){editor.clearComposingText(getCurrentInputConnection());super.onFinishCandidatesView(finishingInput);}@Overridepublic void onUnbindInput(){editor.clearComposingText(getCurrentInputConnection());super.onUnbindInput();}//绑定private void bindKeyboardToInputView(){if (inputView != null){// Bind the selected keyboard to the input view.inputView.setKeyboard(keyboardSwitch.getCurrentKeyboard());updateCursorCapsToInputView();}}//更新private void updateCursorCapsToInputView(){InputConnection ic = getCurrentInputConnection();if ((ic != null) && (inputView != null)){int caps = 0;EditorInfo ei = getCurrentInputEditorInfo();if ((ei != null) && (ei.inputType != EditorInfo.TYPE_NULL)){caps = ic.getCursorCapsMode(ei.inputType);}inputView.updateCursorCaps(caps);}}//提交private void commitText(CharSequence text){if (editor.commitText(getCurrentInputConnection(), text)){// Clear candidates after committing any text.clearCandidates();}}//按键@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event){if ((keyCode == KeyEvent.KEYCODE_BACK) && (event.getRepeatCount() == 0)){// Handle the back-key to close the pop-up keyboards.if ((inputView != null) && inputView.handleBack()){return true;}}return super.onKeyDown(keyCode, event);}public void onKey(int primaryCode, int[] keyCodes){if (keyboardSwitch.onKey(primaryCode)){escape();bindKeyboardToInputView();return;}if (handleOption(primaryCode) || handleCapsLock(primaryCode)|| handleEnter(primaryCode) || handleSpace(primaryCode)|| handleDelete(primaryCode) || handleComposing(primaryCode)){return;}handleKey(primaryCode);}public void onText(CharSequence text){commitText(text);}public void onPress(int primaryCode){effect.vibrate();effect.playSound();}public void onRelease(int primaryCode){// no-op}public void swipeLeft(){// no-op}public void swipeRight(){// no-op}public void swipeUp(){// no-op}public void swipeDown(){requestHideSelf(0);}public void onPickCandidate(String candidate){// Commit the picked candidate and suggest its following words.commitText(candidate);setCandidates(phraseDictionary.getFollowingWords(candidate.charAt(0)),false);}private void clearCandidates(){setCandidates("", false);}private void setCandidates(String words, boolean highlightDefault){if (candidatesContainer != null){candidatesContainer.setCandidates(words, highlightDefault);setCandidatesViewShown((words.length() > 0)|| editor.hasComposingText());if (inputView != null){inputView.setEscape(candidatesContainer.isShown());}}}private boolean handleOption(int keyCode){if (keyCode == SoftKeyboard.KEYCODE_OPTIONS){// TODO: Do voice input here.return true;}return false;}private boolean handleCapsLock(int keyCode){return (keyCode == Keyboard.KEYCODE_SHIFT)&& inputView.toggleCapsLock();}private boolean handleEnter(int keyCode){if (keyCode == '\n'){if (inputView.hasEscape()){escape();} else if (editor.treatEnterAsLinkBreak()){commitText("\n");} else{sendKeyChar('\n');}return true;}return false;}private boolean handleSpace(int keyCode){if (keyCode == ' '){if ((candidatesContainer != null) && candidatesContainer.isShown()){// The space key could either pick the highlighted candidate or// escape// if there's no highlighted candidate and no composing-text.if (!candidatesContainer.pickHighlighted()&& !editor.hasComposingText()){escape();}} else{commitText(" ");}return true;}return false;}private boolean handleDelete(int keyCode){// Handle delete-key only when no composing text.if ((keyCode == Keyboard.KEYCODE_DELETE) && !editor.hasComposingText()){if (inputView.hasEscape()){escape();} else{sendDownUpKeyEvents(KeyEvent.KEYCODE_DEL);}return true;}return false;}private boolean handleComposing(int keyCode){if (editor.compose(getCurrentInputConnection(), keyCode)){// Set the candidates for the updated composing-text and provide// default// highlight for the word candidates.setCandidates(wordDictionary.getWords(editor.composingText()), true);return true;}return false;}/** * Handles input of SoftKeybaord key code that has not been consumed by * other handling-methods. */private void handleKey(int keyCode){if (isInputViewShown() && inputView.isShifted()){keyCode = Character.toUpperCase(keyCode);}commitText(String.valueOf((char) keyCode));}/** * Simulates PC Esc-key function by clearing all composing-text or * candidates. */protected void escape(){editor.clearComposingText(getCurrentInputConnection());clearCandidates();}}

代码不多，适合学习！

学习的目标是成熟！~~~~