Andorid Settings 默认设置，移除选项

Android Settings

配置文件目录

• android/frameworks/base/core/res/res/values/config.xml
• android/frameworks/base/core/res/res/values/symbols.xml
• android/frameworks/base/packages/SettingsProvider/res/values/defaults.xml

添加config:

1.android/frameworks/base/core/res/res/values/config.xml

<bool name="config_brightness">falsebool>

//新添加的config属性必须要在symbols.xml文件里添加对应符号，否则在R.java文件里生成不了
2.android/frameworks/base/core/res/res/values/symbols.xml
"bool" name="config_brightness" />

3.//使用已添加的config
if(getResources().getBoolean(com.android.internal.R.bool.config_brightness) == false)
{
    do something.
}

默认屏保时间def_screen_off_timeout
android/frameworks/base/packages/SettingsProvider/DatabaseHelper.java

//默认设置值
android/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
"def_screen_off_timeout">60000

//Settings.System.SCREEN_OFF_TIMEOUT 定义
android/frameworks/base/core/java/android/provider/Settings.java
public static final String SCREEN_OFF_TIMEOUT = "screen_off_timeout";

  private void loadSystemSettings(SQLiteDatabase db) {
        SQLiteStatement stmt = null;
        try {
            stmt = db.compileStatement("INSERT OR IGNORE INTO system(name,value)"
                    + " VALUES(?,?);");

            loadBooleanSetting(stmt, Settings.System.DIM_SCREEN,
                    R.bool.def_dim_screen);
            //读取默认值        
            loadIntegerSetting(stmt, Settings.System.SCREEN_OFF_TIMEOUT,
                    R.integer.def_screen_off_timeout);

            // Set default cdma DTMF type
            loadSetting(stmt, Settings.System.DTMF_TONE_TYPE_WHEN_DIALING, 0);

            // Set default hearing aid
            loadSetting(stmt, Settings.System.HEARING_AID, 0);

            // Set default tty mode
            loadSetting(stmt, Settings.System.TTY_MODE, 0);

            loadIntegerSetting(stmt, Settings.System.SCREEN_BRIGHTNESS,
                    R.integer.def_screen_brightness);

            loadBooleanSetting(stmt, Settings.System.SCREEN_BRIGHTNESS_MODE,
                    R.bool.def_screen_brightness_automatic_mode);

            loadDefaultAnimationSettings(stmt);

            loadBooleanSetting(stmt, Settings.System.ACCELEROMETER_ROTATION,
                    R.bool.def_accelerometer_rotation);

            loadDefaultHapticSettings(stmt);

            loadBooleanSetting(stmt, Settings.System.NOTIFICATION_LIGHT_PULSE,
                    R.bool.def_notification_pulse);

            loadUISoundEffectsSettings(stmt);

            loadIntegerSetting(stmt, Settings.System.POINTER_SPEED,
                    R.integer.def_pointer_speed);

            /*
             * IMPORTANT: Do not add any more upgrade steps here as the global,
             * secure, and system settings are no longer stored in a database
             * but are kept in memory and persisted to XML.
             *
             * See: SettingsProvider.UpgradeController#onUpgradeLocked
             */
        } finally {
            if (stmt != null) stmt.close();
        }
    }

移除Daydreams

android/frameworks/base/core/res/res/values/config.xml
<bool name="config_dreamsSupported">truebool>
 @Override
                public List getNonIndexableKeys(Context context) {
                    ArrayList result = new ArrayList();
                    if (!context.getResources().getBoolean(
                            com.android.internal.R.bool.config_dreamsSupported)) {
                        result.add(KEY_SCREEN_SAVER);
                    }
                }

Settings对一个Preference的操作

android/packages/apps/Settings/res/xml/display_settings.xml
"screensaver"
                android:title="@string/screensaver_settings_title"
                android:fragment="com.android.settings.DreamSettings" />

android/packages/apps/Settings/src/com/android/settings/DisplaySettings.java                
private static final String KEY_SCREEN_SAVER = "screensaver";
private Preference mScreenSaverPreference;

 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        final Activity activity = getActivity();
        final ContentResolver resolver = activity.getContentResolver();

        addPreferencesFromResource(R.xml.display_settings);

        mScreenSaverPreference = findPreference(KEY_SCREEN_SAVER);
         if (mScreenSaverPreference != null
             && getResources().getBoolean(
                                com.android.internal.R.bool.config_dreamsSupported) == false) {
            getPreferenceScreen().removePreference(mScreenSaverPreference);
        }
    ....
}       

移除双击Power button start camera选项：

    <bool name="config_cameraDoubleTapPowerGestureEnabled">falsebool>

移除Daydream 下的Photo Frame，Photo Table目项:

删除/system/app/PhotoTable/PhotoTable.apk即可
源码路径：android/packages/screensavers/PhotoTable

Android7.1.2 Settings：

移除Battery设置项

去掉Battery之后：

android7.1 Settings代码分析：

android7.1\packages\apps\Settings\src\com\android\settings\Settings.java
/**
 * Top-level Settings activity
 */
public class Settings extends SettingsActivity {

    /*
    * Settings subclasses for launching independently.
    */
    public static class BluetoothSettingsActivity extends SettingsActivity { /* empty */ }
    public static class WirelessSettingsActivity extends SettingsActivity { /* empty */ }
    public static class SimSettingsActivity extends SettingsActivity { /* empty */ }
    public static class TetherSettingsActivity extends SettingsActivity { /* empty */ }
    public static class VpnSettingsActivity extends SettingsActivity { /* empty */ }
    public static class DateTimeSettingsActivity extends SettingsActivity { /* empty */ }
    public static class StorageSettingsActivity extends SettingsActivity { /* empty */ }
    public static class PrivateVolumeForgetActivity extends SettingsActivity { /* empty */ }
    public static class PrivateVolumeSettingsActivity extends SettingsActivity { /* empty */ }
    public static class PublicVolumeSettingsActivity extends SettingsActivity { /* empty */ }
    public static class WifiSettingsActivity extends SettingsActivity { /* empty */ }
    public static class WifiP2pSettingsActivity extends SettingsActivity { /* empty */ }
    public static class InputMethodAndLanguageSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AvailableVirtualKeyboardActivity extends SettingsActivity { /* empty */ }
    public static class KeyboardLayoutPickerActivity extends SettingsActivity { /* empty */ }
    public static class PhysicalKeyboardActivity extends SettingsActivity { /* empty */ }
    public static class InputMethodAndSubtypeEnablerActivity extends SettingsActivity { /* empty */ }
    public static class SpellCheckersSettingsActivity extends SettingsActivity { /* empty */ }
    public static class LocalePickerActivity extends SettingsActivity { /* empty */ }
    public static class UserDictionarySettingsActivity extends SettingsActivity { /* empty */ }
    public static class HomeSettingsActivity extends SettingsActivity { /* empty */ }
    public static class DisplaySettingsActivity extends SettingsActivity { /* empty */ }
    public static class NightDisplaySettingsActivity extends SettingsActivity { /* empty */ }
    public static class DeviceInfoSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ApplicationSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ManageApplicationsActivity extends SettingsActivity { /* empty */ }
    public static class ManageAssistActivity extends SettingsActivity { /* empty */ }
    public static class AllApplicationsActivity extends SettingsActivity { /* empty */ }
    public static class HighPowerApplicationsActivity extends SettingsActivity { /* empty */ }
    public static class AppOpsSummaryActivity extends SettingsActivity {
        @Override
        public boolean isValidFragment(String className) {
            if (AppOpsSummary.class.getName().equals(className)) {
                return true;
            }
            return super.isValidFragment(className);
            }
    }
    public static class BackgroundCheckSummaryActivity extends SettingsActivity { /* empty */ }
    public static class StorageUseActivity extends SettingsActivity { /* empty */ }
    public static class DevelopmentSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AccessibilitySettingsActivity extends SettingsActivity { /* empty */ }
    public static class CaptioningSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AccessibilityInversionSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AccessibilityContrastSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AccessibilityDaltonizerSettingsActivity extends SettingsActivity { /* empty */ }
    public static class SecuritySettingsActivity extends SettingsActivity { /* empty */ }
    public static class UsageAccessSettingsActivity extends SettingsActivity { /* empty */ }
    public static class LocationSettingsActivity extends SettingsActivity { /* empty */ }
    public static class PrivacySettingsActivity extends SettingsActivity { /* empty */ }
    public static class FactoryResetActivity extends SettingsActivity { /* empty */ }
    public static class RunningServicesActivity extends SettingsActivity { /* empty */ }
    public static class ManageAccountsSettingsActivity extends SettingsActivity { /* empty */ }
    public static class PowerUsageSummaryActivity extends SettingsActivity { /* empty */ }
    public static class BatterySaverSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AccountSyncSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AccountSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AccountSyncSettingsInAddAccountActivity extends SettingsActivity { /* empty */ }
    public static class GestureSettingsActivity extends SettingsActivity { /* empty */ }
    public static class CryptKeeperSettingsActivity extends SettingsActivity { /* empty */ }
    public static class DeviceAdminSettingsActivity extends SettingsActivity { /* empty */ }
    public static class DataUsageSummaryActivity extends SettingsActivity { /* empty */ }
    public static class AdvancedWifiSettingsActivity extends SettingsActivity { /* empty */ }
    public static class SavedAccessPointsSettingsActivity extends SettingsActivity { /* empty */ }
    public static class TextToSpeechSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AndroidBeamSettingsActivity extends SettingsActivity { /* empty */ }
    public static class WifiDisplaySettingsActivity extends SettingsActivity { /* empty */ }
    public static class DreamSettingsActivity extends SettingsActivity { /* empty */ }
    public static class NotificationStationActivity extends SettingsActivity { /* empty */ }
    public static class UserSettingsActivity extends SettingsActivity { /* empty */ }
    public static class NotificationAccessSettingsActivity extends SettingsActivity { /* empty */ }
    public static class VrListenersSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenAccessSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ConditionProviderSettingsActivity extends SettingsActivity { /* empty */ }
    public static class UsbSettingsActivity extends SettingsActivity { /* empty */ }
    public static class TrustedCredentialsSettingsActivity extends SettingsActivity { /* empty */ }
    public static class PaymentSettingsActivity extends SettingsActivity { /* empty */ }
    public static class PrintSettingsActivity extends SettingsActivity { /* empty */ }
    public static class PrintJobSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenModeSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenModePrioritySettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenModeAutomationSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenModeScheduleRuleSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenModeEventRuleSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenModeExternalRuleSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ZenModeVisualInterruptionSettingsActivity extends SettingsActivity { /* empty */}
    public static class SoundSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ConfigureNotificationSettingsActivity extends SettingsActivity { /* empty */ }
    public static class NotificationAppListActivity extends SettingsActivity { /* empty */ }
    public static class AppNotificationSettingsActivity extends SettingsActivity { /* empty */ }
    public static class OtherSoundSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ManageDomainUrlsActivity extends SettingsActivity { /* empty */ }
    public static class AutomaticStorageManagerSettingsActivity extends SettingsActivity { /* empty */ }

    public static class TopLevelSettings extends SettingsActivity { /* empty */ }
    public static class ApnSettingsActivity extends SettingsActivity { /* empty */ }
    public static class WifiCallingSettingsActivity extends SettingsActivity { /* empty */ }
    public static class MemorySettingsActivity extends SettingsActivity { /* empty */ }
    public static class AppMemoryUsageActivity extends SettingsActivity { /* empty */ }
    public static class OverlaySettingsActivity extends SettingsActivity { /* empty */ }
    public static class WriteSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AppDrawOverlaySettingsActivity extends SettingsActivity { /* empty */ }
    public static class AppWriteSettingsActivity extends SettingsActivity { /* empty */ }
    public static class AdvancedAppsActivity extends SettingsActivity { /* empty */ }

    public static class WifiCallingSuggestionActivity extends SettingsActivity { /* empty */ }
    public static class ZenModeAutomationSuggestionActivity extends SettingsActivity { /* empty */ }
    public static class FingerprintSuggestionActivity extends FingerprintSettings { /* empty */ }
    public static class FingerprintEnrollSuggestionActivity extends FingerprintEnrollIntroduction {
        /* empty */
    }
    public static class ScreenLockSuggestionActivity extends ChooseLockGeneric { /* empty */ }
    public static class WallpaperSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ManagedProfileSettingsActivity extends SettingsActivity { /* empty */ }
    public static class DeletionHelperActivity extends SettingsActivity { /* empty */ }

    public static class ApnEditorActivity extends SettingsActivity { /* empty */ }
    public static class ChooseAccountActivity extends SettingsActivity { /* empty */ }
    public static class IccLockSettingsActivity extends SettingsActivity { /* empty */ }
    public static class ImeiInformationActivity extends SettingsActivity { /* empty */ }
    public static class SimStatusActivity extends SettingsActivity { /* empty */ }
    public static class StatusActivity extends SettingsActivity { /* empty */ }
    public static class TestingSettingsActivity extends SettingsActivity { /* empty */ }
    public static class WifiAPITestActivity extends SettingsActivity { /* empty */ }
    public static class WifiInfoActivity extends SettingsActivity { /* empty */ }

    // Categories.
    public static class WirelessSettings extends SettingsActivity { /* empty */ }
    public static class DeviceSettings extends SettingsActivity { /* empty */ }
    public static class PersonalSettings extends SettingsActivity { /* empty */ }
    public static class SystemSettings extends SettingsActivity { /* empty */ }
}


android7.1\packages\apps\Settings\src\com\android\settings\SettingsActivity.java
    private void doUpdateTilesList() {
        PackageManager pm = getPackageManager();
        final UserManager um = UserManager.get(this);
        final boolean isAdmin = um.isAdminUser();

        String packageName = getPackageName();
        setTileEnabled(new ComponentName(packageName, WifiSettingsActivity.class.getName()),
                pm.hasSystemFeature(PackageManager.FEATURE_WIFI), isAdmin, pm);
        /**pm.hasSystemFeature(PackageManager.FEATURE_WIFI)通过判断是否有FEATURE_WIFI来确认是否使用WIFI设置项，定义在PackageManger.java public static final String FEATURE_WIFI = "android.hardware.wifi";**/

        setTileEnabled(new ComponentName(packageName,
                Settings.BluetoothSettingsActivity.class.getName()),
                pm.hasSystemFeature(PackageManager.FEATURE_BLUETOOTH), isAdmin, pm);

        setTileEnabled(new ComponentName(packageName,
                Settings.DataUsageSummaryActivity.class.getName()),
                Utils.isBandwidthControlEnabled(), isAdmin, pm);

        setTileEnabled(new ComponentName(packageName,
                Settings.SimSettingsActivity.class.getName()),
                Utils.showSimCardTile(this), isAdmin, pm);

        setTileEnabled(new ComponentName(packageName,
                Settings.PowerUsageSummaryActivity.class.getName()),
                mBatteryPresent, isAdmin, pm); //Battery设置项 

        setTileEnabled(new ComponentName(packageName,
                Settings.UserSettingsActivity.class.getName()),
                UserHandle.MU_ENABLED && UserManager.supportsMultipleUsers()
                && !Utils.isMonkeyRunning(), isAdmin, pm);

        setTileEnabled(new ComponentName(packageName,
                        Settings.WirelessSettingsActivity.class.getName()),
                !UserManager.isDeviceInDemoMode(this), isAdmin, pm);

        setTileEnabled(new ComponentName(packageName,
                        Settings.DateTimeSettingsActivity.class.getName()),
                !UserManager.isDeviceInDemoMode(this), isAdmin, pm);
        NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this);
        setTileEnabled(new ComponentName(packageName,
                        Settings.PaymentSettingsActivity.class.getName()),
                pm.hasSystemFeature(PackageManager.FEATURE_NFC)
                        && pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION)
                        && adapter != null && adapter.isEnabled(), isAdmin, pm);

        setTileEnabled(new ComponentName(packageName,
                Settings.PrintSettingsActivity.class.getName()),
                pm.hasSystemFeature(PackageManager.FEATURE_PRINTING), isAdmin, pm);

        final boolean showDev = mDevelopmentPreferences.getBoolean(
                    DevelopmentSettings.PREF_SHOW, android.os.Build.TYPE.equals("eng"))
                && !um.hasUserRestriction(UserManager.DISALLOW_DEBUGGING_FEATURES);
        setTileEnabled(new ComponentName(packageName,
                        Settings.DevelopmentSettingsActivity.class.getName()),
                showDev, isAdmin, pm);

        // Reveal development-only quick settings tiles
        DevelopmentTiles.setTilesEnabled(this, showDev);

        if (UserHandle.MU_ENABLED && !isAdmin) {
            // When on restricted users, disable all extra categories (but only the settings ones).
            List categories = getDashboardCategories();
            for (DashboardCategory category : categories) {
                for (Tile tile : category.tiles) {
                    ComponentName component = tile.intent.getComponent();
                    if (packageName.equals(component.getPackageName()) && !ArrayUtils.contains(
                            SETTINGS_FOR_RESTRICTED, component.getClassName())) {
                        setTileEnabled(component, false, isAdmin, pm);
                    }
                }
            }
        }

        String backupIntent = getResources().getString(R.string.config_backup_settings_intent);
        boolean useDefaultBackup = TextUtils.isEmpty(backupIntent);
        setTileEnabled(new ComponentName(packageName,
                Settings.PrivacySettingsActivity.class.getName()), useDefaultBackup, isAdmin, pm);
        boolean hasBackupActivity = false;
        if (!useDefaultBackup) {
            try {
                Intent intent = Intent.parseUri(backupIntent, 0);
                hasBackupActivity = !getPackageManager().queryIntentActivities(intent, 0).isEmpty();
            } catch (URISyntaxException e) {
                Log.e(LOG_TAG, "Invalid backup intent URI!", e);
            }
        }
        setTileEnabled(new ComponentName(packageName,
                BackupSettingsActivity.class.getName()), hasBackupActivity,
                isAdmin || Utils.isCarrierDemoUser(this), pm);

    }

移除Battery选项所要修改的代码

android7.1\packages\apps\Settings\src\com\android\settings\SettingsActivity.java
private boolean mBatteryPresent = false; //default true ,by song to false;

if(mBatteryPresent) {
        registerReceiver(mBatteryInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
    }

if ( mBatteryPresent ) {        
        unregisterReceiver(mBatteryInfoReceiver);
    }   

Android7.1

 PackageManager pm = getPackageManager();
        final UserManager um = UserManager.get(this);
        final boolean isAdmin = um.isAdminUser();

        String packageName = getPackageName();
        setTileEnabled(new ComponentName(packageName, WifiSettingsActivity.class.getName()),
                pm.hasSystemFeature(PackageManager.FEATURE_WIFI), isAdmin, pm);


if (!getContext().getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)) {
            getPreferenceScreen().removePreference(mUpgradeBluetoothRemote); //add by song
        }