Android系统之路(初识MTK) ------ Default Voice Control/输入法校准、自动校准、首字母大写、按键声音

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

    
    0
    1
    2
    3

    
    
      @string/auto_correction_threshold_mode_index_off
      @string/auto_correction_threshold_mode_index_modest
      @string/auto_correction_threshold_mode_index_aggressive
      @string/auto_correction_threshold_mode_index_very_aggressive
    
    
    
      @string/auto_correction_threshold_mode_off
      @string/auto_correction_threshold_mode_modest
      @string/auto_correction_threshold_mode_aggressive
      @string/auto_correction_threshold_mode_very_aggressive
    

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

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
    
#输入法按键音效关		
		
#输入法拼写校准默认开
    

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 :

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：

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：