今天給大家分享下關于修改MTK平臺下系統首次開機的默認屏幕背光亮度，系統語言默認英語情況下修改日期格式，修改拍照屬性，具體修改的地方不清楚或者沒人告知的 話，請參照之前幾篇博客的方法分享，現在直接進入主題 首先我們來修改第一次開機的屏幕亮度 ①修改首次開機的系統默認屏幕背光亮度，我是在該java下修改的------(把注釋的地方都去掉，因為注釋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(); } } ~~~ 背光值最大 255 ，所以我們設置到最大就OK，意思是100%屏幕亮度，執行條件是我自己寫的，分別是?android.os.SystemProperties.isWalPadVersion()，這個函數也是 我在系統代碼里自己添加的，前面幾篇博客也有提到，這里就不細說了，首次開機的記錄，因為我們只需要第一次開機設置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()); /// @} } ~~~ 修改initUI之前的原始系統代碼: ~~~ 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); ...... } ~~~ 原始getDateFormat(): ~~~ private String getDateFormat() { return Settings.System.getString(getContentResolver(), Settings.System.DATE_FORMAT); } ~~~ 修改如下（修改為日期格式默認日月年）： 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); ...... } ~~~ 修改DateFormat(): ~~~ 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); } ~~~ R.array.date_format_values： ~~~ <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> ~~~ dateFormats[2] ==?<item>dd-MM-yyyy</item> ③picture makeer model ，修改 buildinfo.sh 文件，model\product 屬性 修改之前：  修改之后：  第③是編譯之后的效果圖，前面兩個的效果圖就沒有貼出來了