今天给大家分享MTK平台系统编程与修改的另一个部分，分别是输入法校准、自动校准默认关、首字母大写默认开、按键声音默认关、Voice Control 移除系统中文，默认 英文，下面一个一个的介绍给大家 ①Language & input> Android Keyboard>Auto Correction > Uncheck as Default(Off) 语言输入-安卓键盘-自动校准默认关 根据红色框关键词用命令行在settings下执行热词检索：  ~~~ .../mnt/disk3/jsp/xxx8382$ find packages/apps/Settings/ -name "*.xml" | xargs grep "Very aggressive" -l ~~~ 搜索无果，于是扩大搜索范围，键入如下命令行 ~~~ .../mnt/disk3/jsp/xxx8382$ find packages/ -name "*.xml" | xargs grep "Very aggressive" -l packages/inputmethods/LatinIME/java/res/values/strings.xml packages/inputmethods/LatinIME/java/res/values-en-rIN/strings.xml packages/inputmethods/LatinIME/java/res/values-en-rGB/strings.xml ~~~ 得到3条结果，进入查看得到热词 auto_correction_threshold_mode_very_aggressive 搜索热词 ~~~ android5@ubuntu2015:/mnt/disk3/jsp/xxx8382$ find packages/ -name "*.xml" | xargs grep "auto_correction_threshold_mode_very_aggressive" -l packages/inputmethods/LatinIME/java/res/values-es/strings.xml packages/inputmethods/LatinIME/java/res/values-ms-rMY/strings.xml packages/inputmethods/LatinIME/java/res/values-my/strings.xml packages/inputmethods/LatinIME/java/res/values-ky-rKG/strings.xml packages/inputmethods/LatinIME/java/res/values-hu/strings.xml packages/inputmethods/LatinIME/java/res/values-ne-rNP/strings.xml packages/inputmethods/LatinIME/java/res/values-pl/strings.xml packages/inputmethods/LatinIME/java/res/values-lo-rLA/strings.xml packages/inputmethods/LatinIME/java/res/values/strings.xml packages/inputmethods/LatinIME/java/res/values/config-auto-correction-thresholds.xml ~~~ 查看 config-auto-correction-thresholds.xml 文件 ，查找如下代码 ~~~ <!-- The index of the auto correction threshold values array. --> <string name="auto_correction_threshold_mode_index_off" translatable="false">0</string> <string name="auto_correction_threshold_mode_index_modest" translatable="false">1</string> <string name="auto_correction_threshold_mode_index_aggressive" translatable="false">2</string> <string name="auto_correction_threshold_mode_index_very_aggressive" translatable="false">3</string> <!-- The array of the auto correction threshold settings values. --> <string-array name="auto_correction_threshold_mode_indexes" translatable="false"> <item>@string/auto_correction_threshold_mode_index_off</item> <item>@string/auto_correction_threshold_mode_index_modest</item> <item>@string/auto_correction_threshold_mode_index_aggressive</item> <item>@string/auto_correction_threshold_mode_index_very_aggressive</item> </string-array> <!-- The array of the human readable auto correction threshold settings entries. --> <string-array name="auto_correction_threshold_modes" translatable="false"> <item>@string/auto_correction_threshold_mode_off</item> <item>@string/auto_correction_threshold_mode_modest</item> <item>@string/auto_correction_threshold_mode_aggressive</item> <item>@string/auto_correction_threshold_mode_very_aggressive</item> </string-array> ~~~ 继续热词搜索追踪 ~~~ jsp@ubuntu2015:/mnt/disk3/jsp/RMT8382$ find packages/ -name "*.xml" | xargs grep "auto_correction_threshold_modes" -l packages/inputmethods/LatinIME/java/res/values/config-auto-correction-thresholds.xml packages/inputmethods/LatinIME/java/res/xml/prefs_screen_correction.xml ~~~ 查看 prefs_screen_correction.xml 文件 修改如下，运用 Beyond Compare 工具直接copy ~~~ <ListPreference android:key="auto_correction_threshold" android:title="@string/auto_correction" android:summary="@string/auto_correction_summary" android:entryValues="@array/auto_correction_threshold_mode_indexes" android:entries="@array/auto_correction_threshold_modes" android:defaultValue="@string/auto_correction_threshold_mode_index_off" android:persistent="true" /> ~~~ 就可以重新修改默认值，重新编译工程，刷机即可看到效果 重新刷机第一次开机之后的效果图：  ②系统输入法自动大写默认开/输入法按键音效默认关/输入法拼写校准默认开-修改 热词检索命令 ~~~ android5@ubuntu2015:/mnt/disk3/jsp/RMT8382$ find packages/ -name "*.xml" | xargs grep "按键音效" -l packages/inputmethods/LatinIME/java/res/values-zh-rCN/strings.xml android5@ubuntu2015:/mnt/disk3/jsp/RMT8382$ find packages/ -name "*.xml" | xargs grep "sound_on_keypress" -l packages/inputmethods/LatinIME/java/res/values-es/strings.xml packages/inputmethods/LatinIME/java/res/values-ms-rMY/strings.xml packages/inputmethods/LatinIME/java/res/values-my/strings.xml packages/inputmethods/LatinIME/java/res/values-ky-rKG/strings.xml packages/inputmethods/LatinIME/java/res/values-hu/strings.xml packages/inputmethods/LatinIME/java/res/values-ne-rNP/strings.xml packages/inputmethods/LatinIME/java/res/values-pl/strings.xml packages/inputmethods/LatinIME/java/res/values-lo-rLA/strings.xml packages/inputmethods/LatinIME/java/res/values/strings.xml packages/inputmethods/LatinIME/java/res/values-es-rUS/strings.xml packages/inputmethods/LatinIME/java/res/values-bn/strings.xml packages/inputmethods/LatinIME/java/res/values-tl/strings.xml packages/inputmethods/LatinIME/java/res/xml/prefs_screen_preferences.xml ~~~ 查看 prefs_screen_preferences.xml 文件，检索热词 ~~~ jsp@ubuntu2015:/mnt/disk3/jsp/xxx8382$ find packages/ -name "*.xml" | xargs grep "config_default_sound_enabled" -l packages/inputmethods/LatinIME/java/res/values/config-per-form-factor.xml ~~~ 其实在prefs_screen_preferences.xml 可以直接修改，根据需求修改如下： ~~~ #首字母大写开 <CheckBoxPreference android:key="auto_cap" android:title="@string/auto_cap" android:summary="@string/auto_cap_summary" android:defaultValue="true" android:persistent="true" /> #输入法按键音效关 <CheckBoxPreference android:key="sound_on" android:title="@string/sound_on_keypress" android:defaultValue="false" android:persistent="true" /> #输入法拼写校准默认开 <CheckBoxPreference android:key="vibrate_on" android:title="@string/vibrate_on_keypress" android:defaultValue="@bool/config_default_vibration_enabled" android:persistent="true" /> ~~~ 刷机第一次启动的效果：  ③setting - voice control - language for voice control  -Keep only english 设置-声音控制-语言只留英语去掉中文 最初效果图，默认简体中文： 定位到settings下检索关键字 ~~~ jsp@ubuntu2015:/mnt/disk3/jsp/xxx8382$ find packages/apps/Settings/ -type f|xargs grep "繁體中文" -l ~~~ 搜索无果，扩大检索范围 ~~~ jsp@ubuntu2015:/mnt/disk3/jsp/xxx8382$ find ./ -type f|xargs grep "繁體中文" -l ~~~ 发现结果根本不是想要的，而且由于源码较大，所以这个果断放弃，采用另一个方案，使用Eclipse工具来检索，这是笔者介绍给大家的一个非常实用的方法，以后绝对会用 得着不管是检索资料还是反编译apk等，都很实用 连接USB打开debugging，打开Eclipse → 打开 DDMS 点击设备 如下界面操作：  检索包名 com.mediatek.voicecommand ~~~ android5@ubuntu2015:/mnt/disk3/jsp/RMT8382$ find -name "*.xml"|xargs grep "com.mediatek.voicecommand" -l ./vendor/mediatek/proprietary/packages/apps/VoiceCommand/tests/AndroidManifest.xml ./vendor/mediatek/proprietary/packages/apps/VoiceCommand/res/xml/voice_ui_available_preference.xml ./vendor/mediatek/proprietary/packages/apps/VoiceCommand/res/xml/voiceprocessinfo.xml ./vendor/mediatek/proprietary/packages/apps/VoiceCommand/AndroidManifest.xml ~~~ 得到如上结果，大大缩小我们要查找的范围，继续之前的检索 ~~~ android5@ubuntu2015:/mnt/disk3/jsp/RMT8382$ find vendor/mediatek/proprietary/packages/apps/VoiceCommand -type f|xargs grep "繁體中文" -l vendor/mediatek/proprietary/packages/apps/VoiceCommand/res/xml/voicelanguage.xml ~~~ 得到 voicelanguage.xml 资源文件，继续下一步检索 ~~~ android5@ubuntu2015:/mnt/disk3/jsp/RMT8382$ find -name "*.java"|xargs grep "voicelanguage" -l ./out/target/common/R/com/mediatek/voicecommand/R.java ./out/target/common/obj/APPS/VoiceCommand_intermediates/src/com/mediatek/voicecommand/R.java ~~~ 搜到的都不是想要的，继续检索，在当前目录下，看某个java文件调用了刚刚DDMS解析的 list 资源 id ~~~ android5@ubuntu2015:/mnt/disk3/jsp/RMT8382$ find vendor/mediatek/proprietary/packages/apps/VoiceCommand -name "*.java"|xargs grep "list" -l vendor/mediatek/proprietary/packages/apps/VoiceCommand/tests/src/com/mediatek/voicecommand/tests/VoiceCommandTest.java vendor/mediatek/proprietary/packages/apps/VoiceCommand/src/com/mediatek/voicecommand/ui/settings/VoiceUiSettings.java vendor/mediatek/proprietary/packages/apps/VoiceCommand/src/com/mediatek/voicecommand/mgr/ConfigurationManager.java vendor/mediatek/proprietary/packages/apps/VoiceCommand/src/com/mediatek/voicecommand/mgr/AppDataManager.java vendor/mediatek/proprietary/packages/apps/VoiceCommand/src/com/mediatek/voicecommand/business/VoiceContacts.java vendor/mediatek/proprietary/packages/apps/VoiceCommand/src/com/mediatek/voicecommand/business/VoiceWakeupMode.java vendor/mediatek/proprietary/packages/apps/VoiceCommand/src/com/mediatek/voicecommand/service/VoiceCommandManagerStub.java vendor/mediatek/proprietary/packages/apps/VoiceCommand/src/com/mediatek/voicecommand/cfg/ConfigurationXML.java ~~~ 打开 VoiceUiSettings.java 查看系统代码，检索到相关资源 ~~~ @Override public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { if (KEY_VOICE_UI_LANGUAGE.equals(preference.getKey())) {// 这就是Preference 被点击之后跳转的选项，也就是Voice Control 选项 Intent intent = new Intent( "com.mediatek.voicecommand.VOICE_CONTROL_LANGUAGE"); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); return true; } else if ...... } ~~~ 根据 Activity action 检索Acticity 名称 ~~~ jsp@ubuntu2015:/mnt/disk3/jsp/xxx8382$ find vendor/mediatek/proprietary/packages/apps/VoiceCommand -name "*.xml"|xargs grep "com.mediatek.voicecommand.VOICE_CONTROL_LANGUAGE" -l vendor/mediatek/proprietary/packages/apps/VoiceCommand/AndroidManifest.xml ~~~ 得到如下 Activity : ~~~ <activity android:name=".ui.settings.VoiceUiAvailableLanguageActivity" android:label="@string/voice_ui_language_title" android:taskAffinity="com.android.settings" android:configChanges="orientation|keyboardHidden|keyboard|navigation" android:parentActivityName=".ui.settings.VoiceUiSettings"> <intent-filter> <action android:name="com.mediatek.voicecommand.VOICE_CONTROL_LANGUAGE"/> <category android:name="android.intent.category.DEFAULT"/> </intent-filter> </activity> ~~~ 查看 VoiceUiAvailableLanguageActivity 代码 ~~~ @Override public void onCreate(Bundle savedInstanceState) { Xlog.d(TAG, "OnCreate VoiceUiAvailableLanguageFragment"); super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.voice_ui_available_langs); mVoiceConfigMgr = ConfigurationManager.getInstance(this); if (mVoiceConfigMgr == null) { Xlog.e(TAG, "ConfigurationManager is null"); return; } mAvailableLangs = mVoiceConfigMgr.getLanguageList(); // 继续查看 ConfigurationManager getLanguageList() 代码 // mDefaultLanguage = mVoiceConfigMgr.getCurrentLanguage();// 这里 mDefaultLanguage int 默认为 0 ...... } } ~~~ ConfigurationManager getLanguageList() 代码 ~~~ public String[] getLanguageList() { int size = mLanguageList.size(); if (size == 0) { return null; } String[] language = new String[size]; // Log.i(VoiceCommandManagerService.TAG, "mLanguageList = "+ size); for (int i = 0; i < size; i++) { language[i] = mLanguageList.get(i).mName; } return language; } ~~~ mLanguageList 变量赋值的地方： ~~~ /* * ConfigurationManager for control configuration * * @param context */ private ConfigurationManager(Context context) { ...... mCurrentLanguageIndex = mConfigurationXML .readVoiceLanguangeFromXml(mLanguageList);// 来自 ConfigurationXML 的 readVoiceLanguangeFromXml 函数 ...... } ~~~ 继续查看 ConfigurationXML 的 readVoiceLanguangeFromXml 函数 ~~~ /** * Read language info from res. * * @param languageList * language list instance */ public int readVoiceLanguangeFromXml( ...... XmlPullParser parser = mContext.getResources().getXml(// 这里就是加载语言选项 xml 的地方，下面贴上 xml 内容 R.xml.voicelanguage); if (parser == null) { Log.e(TAG, "readVoiceLanguangeFromXml Got execption"); return curIndex; } ...... } ~~~ voicelanguage.xml 内容： ~~~ <?xml version="1.0" encoding="UTF-8"?> <!-- Engineer-Jsp add remove 1 and 2 item default 0 --> <Languages> <Language TypeName="English" ID="0" Code="en-US" FileName="keyword/3.xml" /> <DefaultLanguage ID="0" /> </Languages> <!-- <Language TypeName="简体中文" ID="1" Code="zh-CN" FileName="keyword/1.xml" /> <Language TypeName="繁體中文" ID="2" Code="zh-TW" FileName="keyword/2.xml" /> --> ~~~ 这里已经是我改过的，需求是去掉所有中文只留英文选项，修改 TypeName="English" 的 ID 和 DefaultLanguage ID 都为 0 之后保存，继续修改java逻辑 回到我们的 VoiceUiAvailableLanguageActivity ，只需要注释掉几句代码就OK了 ~~~ @Override public void onCreate(Bundle savedInstanceState) { Xlog.d(TAG, "OnCreate VoiceUiAvailableLanguageFragment"); super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.voice_ui_available_langs); mVoiceConfigMgr = ConfigurationManager.getInstance(this); if (mVoiceConfigMgr == null) { Xlog.e(TAG, "ConfigurationManager is null"); return; } mAvailableLangs = mVoiceConfigMgr.getLanguageList(); // mDefaultLanguage = mVoiceConfigMgr.getCurrentLanguage();//注释此句代码，因为 mDefaultLanguage 默认为0，不再需要其他选项，自己默认为0 ...... } ~~~ ~~~ @Override public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { if (preference instanceof RadioButtonPreference) { // selectLanguage((RadioButtonPreference) preference); // 注释掉此句，不过不注释也不影响，只是多做了一些操作而已，都是多余的 Xlog.d(TAG, "default language changed to " + mAvailableLangs[mDefaultLanguage]); finish(); } return true; } ~~~ selectLanguage 函数代码： ~~~ private void selectLanguage(RadioButtonPreference preference) { if (mLastSelectedPref != null) { if (mLastSelectedPref == preference) { return; } mLastSelectedPref.setChecked(false); } mDefaultLanguage = Integer.parseInt(preference.getKey().toString()); Xlog.d(TAG, "set default language to " + mAvailableLangs[mDefaultLanguage]); mVoiceConfigMgr.setCurrentLanguage(mDefaultLanguage); preference.setChecked(true); mLastSelectedPref = preference; } ~~~ 最后make自己的系统工程，重新烧录可看效果 效果图：