Android系统之路(初识MTK) - 默许第一次开机屏幕亮度/日期格式/picture makeer model

今天给大家分享下关于修改MTK平台下系统首次开机的默认屏幕背光亮度，系统语言默认英语情况下修改日期格式，修改拍照属性，具体修改的地方不清楚或者没人告知的

话，请参照之前几篇博客的方法分享，现在直接进入主题

首先我们来修改第一次开机的屏幕亮度

①修改首次开机的系统默认屏幕背光亮度，我是在该java下修改的------(把注释的地方都去掉，因为注释的地方都是修改了的)

packages\apps\Settings\src\com.mediatek.settings\RestoreRotationReceiver.java

//    private SharedPreferences mSharedPreferences;        @Override    public void onReceive(Context context, Intent intent) {        String action = intent.getAction();        Log.v("RestoreRotationReceiver_IPO", action);//        mSharedPreferences = context.getSharedPreferences("walpad_first_run",Context.MODE_PRIVATE);        if (action.equals(Intent.ACTION_BOOT_COMPLETED)                || action.equals("android.intent.action.ACTION_BOOT_IPO")) {            sRestoreRetore = Settings.System.getInt(context                    .getContentResolver(),                    Settings.System.ACCELEROMETER_ROTATION_RESTORE, 0) != 0;                        // Engineer-Jsp add Unknown sources and Usb debugging default true             if (android.os.SystemProperties.isWalPadVersion() && !isFirstRunSettings(context)) {                  // reboot first default unkonwn sources check                  Settings.Global.putInt(context.getContentResolver(), Settings.Global.INSTALL_NON_MARKET_APPS,1);                  // reboot first default usb debugging check                Settings.Global.putInt(context.getContentResolver(),Settings.Global.ADB_ENABLED, 1);                // save first reboot falgs boolean//                mSharedPreferences.edit().putString("isfirstrun", String.valueOf(true)).commit();                // firstrun defaulr birghtness value for 100%//                setWalpadCFirstRunDefaultBrightness(context);            }                          if (sRestoreRetore) {                Settings.System.putInt(context.getContentResolver(),                        Settings.System.ACCELEROMETER_ROTATION, 1);                Settings.System.putInt(context.getContentResolver(),                        Settings.System.ACCELEROMETER_ROTATION_RESTORE, 0);            }        }    }    /**     * ***- MTK-6582-8382© -***      * isFirstRunSettings(Context context)     * walpad c firstrun need default false     * Engineer-Jsp add     * */         public boolean isFirstRunSettings(Context context){		if (TextUtils.isEmpty(mSharedPreferences.getString("isfirstrun", ""))) {			mSharedPreferences.edit()					.putString("isfirstrun", String.valueOf(false))					.commit();		}		return Boolean.valueOf(mSharedPreferences.getString("isfirstrun", ""));    }	    /**     * ***- MTK-6582-8382© -***      * setWalpadCFirstRunDefaultBrightness(Context context)     * walpad c firstrun need default settings brightness value for 100%     * Engineer-Jsp add     * */         public void setWalpadCFirstRunDefaultBrightness(Context context){        try{              Uri uri = Settings.System.getUriFor(Settings.System.SCREEN_BRIGHTNESS);            Settings.System.putInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, 255);              context.getContentResolver().notifyChange(uri, null);          }  catch (Exception localException){              localException.printStackTrace();            }     }

我在系统代码里自己添加的，前面几篇博客也有提到，这里就不细说了，首次开机的记录，因为我们只需要第一次开机设置100%的屏幕亮度

②日期格式修改

packages\apps\Settings\src\com\android\settings\DateTimeSettings.java

    @Override    public void onCreate(Bundle icicle) {        super.onCreate(icicle);        addPreferencesFromResource(R.xml.date_time_prefs);        initUI();        /// M: get plug in and move roaming time setting into date and time settings @{        mExt = UtilsExt.getDateTimeSettingsPlugin(getActivity());        mExt.customizePreferenceScreen(getActivity(), getPreferenceScreen());        /// @}    }

   private void initUI() {        boolean autoTimeEnabled = getAutoState(Settings.Global.AUTO_TIME);        boolean autoTimeZoneEnabled = getAutoState(Settings.Global.AUTO_TIME_ZONE);        ///M: MTK use ListPreference instead of google CheckboxPerference......        String [] dateFormats = getResources().getStringArray(R.array.date_format_values);        String [] formattedDates = new String[dateFormats.length];        String currentFormat = getDateFormat();        // Initialize if DATE_FORMAT is not set in the system settings        // This can happen after a factory reset (or data wipe)        if (currentFormat == null) {            currentFormat = "";        }        // Prevents duplicated values on date format selector.        mDummyDate.set(mDummyDate.get(Calendar.YEAR), mDummyDate.DECEMBER, 31, 13, 0, 0);        for (int i = 0; i < formattedDates.length; i++) {            String formatted =                    DateFormat.getDateFormatForSetting(getActivity(), dateFormats[i])                    .format(mDummyDate.getTime());            if (dateFormats[i].length() == 0) {                formattedDates[i] = getResources().                    getString(R.string.normal_date_format, formatted);            } else {                formattedDates[i] = formatted;            }        }        mDateFormat.setEntries(formattedDates);        mDateFormat.setEntryValues(R.array.date_format_values);        mDateFormat.setValue(currentFormat);......    }

	    private String getDateFormat() {    	        return Settings.System.getString(getContentResolver(),                Settings.System.DATE_FORMAT);    }

initUI:

   private void initUI() {        boolean autoTimeEnabled = getAutoState(Settings.Global.AUTO_TIME);        boolean autoTimeZoneEnabled = getAutoState(Settings.Global.AUTO_TIME_ZONE);        ///M: MTK use ListPreference instead of google CheckboxPerference......        String [] dateFormats = getResources().getStringArray(R.array.date_format_values);        String [] formattedDates = new String[dateFormats.length];        String currentFormat = getDateFormat(dateFormats[2]);        // Initialize if DATE_FORMAT is not set in the system settings        // This can happen after a factory reset (or data wipe)        if (currentFormat == null) {            currentFormat = "";        }        // Prevents duplicated values on date format selector.        mDummyDate.set(mDummyDate.get(Calendar.YEAR), mDummyDate.DECEMBER, 31, 13, 0, 0);        for (int i = 0; i < formattedDates.length; i++) {            String formatted =                    DateFormat.getDateFormatForSetting(getActivity(), dateFormats[i])                    .format(mDummyDate.getTime());            if (dateFormats[i].length() == 0) {                formattedDates[i] = getResources().                    getString(R.string.normal_date_format, formatted);            } else {                formattedDates[i] = formatted;            }        }        mDateFormat.setEntries(formattedDates);        mDateFormat.setEntryValues(R.array.date_format_values);        mDateFormat.setValue(currentFormat);......    }

    private String getDateFormat(String format) {    	    	// Engineer-Jsp add walpad c default date format     	if(android.os.SystemProperties.isWalPadVersion()){            Settings.System.putString(getContentResolver(),                    Settings.System.DATE_FORMAT, format);    	}        return Settings.System.getString(getContentResolver(),                Settings.System.DATE_FORMAT);    }

    <string-array name="date_format_values" translatable="false">        <!-- The blank item means to use whatever the locale calls for. -->        <item></item>        <item>MM-dd-yyyy</item>        <item>dd-MM-yyyy</item>        <item>yyyy-MM-dd</item>        <item>EE-MMM-d-yyyy</item>        <item>EE-d-MMM-yyyy</item>        <item>yyyy-MMM-d-EE</item>    </string-array>

③picture makeer model ，修改 buildinfo.sh 文件，model\product 属性

修改之前：

修改之后：

第③是编译之后的效果图，前面两个的效果图就没有贴出来了