https://www.cnblogs.com/mythou/p/3425570.html
https://blog.csdn.net/myfriend0/article/details/59107989
Platform: RK3288
OS: Android 5.1
Kernel: 3.10.0
一.android provision apk 分析
1.packages\apps\Provision\AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.provision">
<original-package android:name="com.android.provision" />
<!-- For miscellaneous settings -->
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
<application>
<activity android:name="DefaultActivity"
android:excludeFromRecents="true">
<intent-filter android:priority="1">
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.HOME" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
a.priority n. 優先；優先權；[數] 優先次序；優先考慮的事
<intent-filter android:priority="1">
優先級比原生的Launcher優先級還要高，它會在Launcher啟動前就運行起來
b.Launcher屬性
<category android:name="android.intent.category.HOME" />
<category android:name="android.intent.category.DEFAULT" />
2.packages\apps\Provision\src\com\android\provision\DefaultActivity.java
package com.android.provision;
import android.app.Activity;
import android.content.ComponentName;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.provider.Settings;
/**
* Application that sets the provisioned bit, like SetupWizard does.
*/
public class DefaultActivity extends Activity {
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
// Add a persistent setting to allow other apps to know the device has been provisioned.
//添加永久性設置，以允許其他應用知道設備已配置
Settings.Global.putInt(getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 1);
Settings.Secure.putInt(getContentResolver(), Settings.Secure.USER_SETUP_COMPLETE, 1);
Settings.Global.putInt(getContentResolver(), Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB, 0);
// remove this activity from the package manager.
PackageManager pm = getPackageManager();
ComponentName name = new ComponentName(this, DefaultActivity.class);
pm.setComponentEnabledSetting(name, PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
// terminate the activity.
finish();
}
}
3.Provision.apk 優先於Launcher，so……
二.SettingsProvider
2.1.數據分類
SettingsProvider對數據進行了分類，分別是Global、System、Secure三種類型，它們的區別如下:
Global：所有的偏好設置對系統的所有用戶公開，第三方有讀沒有寫的權限
System：包含各種各樣的用戶偏好系統設置
Secure：安全性的用戶偏好系統設置，第三方APP有讀沒有寫的權
2.2.數據庫中的默認數據在frameworks\base\packages\SettingsProvider\res\values\defaults.xml中定義
<bool name="def_bluetooth_on">false</bool>//藍牙 關
2.3.通過frameworks\base\packages\SettingsProvider\src\com\android\providers\settings\DatabaseHelper.java對數據庫結構及初始值進行初始化
loadSecureSettings(SQLiteDatabase db)方法中加入新字段的添加代碼
loadVolumeLevels()和loadSettings()的作用就是在手機第一次啟動時，把手機編好設置的默認值寫入到數據庫settings.db
loadBooleanSetting(stmt, Settings.Global.BLUETOOTH_ON,R.bool.def_bluetooth_on);
2.4.adb 設置
cat /sys/class/backlight/backlight/brightness adb shell settings get system screen_brightness adb shell settings get secure default_input_method adb shell settings put secure default_input_method com.android.inputmethod.pinyin/.PinyinIME //默認PinyinIME鍵盤輸入法 Settings.Secure.putString(getContentResolver(), Settings.Secure.DEFAULT_INPUT_METHOD, "com.sohu.inputmethod.sogou/.SogouIME"); adb shell settings put global def_package_verifier_include_adb 0 //通過USB驗證應用 Settings.Global.putInt(getContentResolver(), Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB, 0); Settings.Secure.putString(getContentResolver(), Settings.Secure.TTS_DEFAULT_SYNTH, "com.iflytek.speechcloud");//默認訊飛tts
2.5.使用24小時格式
private static final String HOURS_12 = "12"; Settings.System.putString(getContentResolver(),Settings.System.TIME_12_24,HOURS_12);
2.6.位置信息 默認精度設置為“節電”/"僅限設備"/"高精度"
< string name="def_location_providers_allowed" translatable="false">network,gps</string>//默認設置為高精度 a. gps 則模式為”僅限設備” b. gps,network則模式為”高精確度” c. network 則模式為”節電”
2.7.android 7.1 系統設置選項默認值數據庫位置
cd /data/system/users/0
2.8. android 5.1 系統設置選項默認值數據庫位置
Settings參數保存在 /data/data/com.android.providers.settings/databases/settings.db里，里面有三個表global, system, secure.
通常這樣查看數據
adb shell sqlite3 data/data/com.android.providers.settings/databases/settings.db "select * from secure"
2.10.frameworks\base\core\java\android\provider\Settings.java 添加新變量
/**
* Run package verificaiton on apps installed through ADB/ADT/USB
* 1 = perform package verification on ADB installs (default)
* 0 = bypass package verification on ADB installs
* @hide
*/
public static final String PACKAGE_VERIFIER_INCLUDE_ADB = "verifier_verify_adb_installs";
2.11.設置 顯示 休眠
settings get system screen_off_timeout
2.6. Android 5.1 frameworks默認設置 frameworks\base\packages\SettingsProvider\res\values\defaults.xml
<bool name="def_dim_screen">true</bool>//自動關屏 開
<integer name="def_screen_off_timeout"></integer>//自動關閉屏幕時間 15秒
<integer name="def_sleep_timeout">-</integer>//表示休眠時間，默認如果沒有修改的是6000，即6000ms的意思，6s進行休眠，在這里將其改為-1就是讓其永遠不休眠
<bool name="def_airplane_mode_on">false</bool>//飛行模式 關
<bool name="def_theater_mode_on">false</bool> //電影院模式 關
<!-- Comma-separated list of bluetooth, wifi, and cell.
<string name="def_airplane_mode_radios" translatable="false">cell,bluetooth,wifi,nfc,wimax</string> //在飛行模式下禁用的功能列表，用逗號分開
<string name="airplane_mode_toggleable_radios" translatable="false">bluetooth,wifi,nfc</string> //在飛行模式下禁用的功能列表中能手動開啟的功能列表，用逗號分開
<bool name="def_auto_time">true</bool> //自動適應時間 開
<bool name="def_auto_time_zone">true</bool> //自動確定時區 開
<bool name="def_accelerometer_rotation">false</bool> //自動旋轉 關
<!-- Default screen brightness, from to . is %.
<integer name="def_screen_brightness"></integer>//默認屏幕亮度
<bool name="def_screen_brightness_automatic_mode">false</bool>//屏幕亮度自適應 關
<fraction name="def_window_animation_scale">%</fraction> //常規窗口動畫的百分比值，為0時禁止窗口動畫
<fraction name="def_window_transition_scale">%</fraction>//activity過度窗口動畫的百分比值，為0時禁止窗口動畫
<bool name="def_haptic_feedback">false</bool> //觸動反饋 關
<bool name="def_bluetooth_on">false</bool>//藍牙 關
<bool name="def_wifi_display_on">false</bool>//Wifi是否開啟顯示 關
<bool name="def_install_non_market_apps">true</bool> //安裝非市場APK 開
<bool name="def_package_verifier_enable">true</bool> //驗證應用 開
<!-- Comma-separated list of location providers.
Network location is off by default because it requires
user opt-in via Setup Wizard or Settings.
<string name="def_location_providers_allowed" translatable="false"></string> //位置信息訪問權限 關
<bool name="assisted_gps_enabled">false</bool> //GPS定位 關
<bool name="def_netstats_enabled">true</bool> //默認是否開啟數據流量 開
<bool name="def_usb_mass_storage_enabled">true</bool> //是否使用USB大容量存儲 開
<bool name="def_wifi_on">false</bool> //wifi 關
<!-- == never, == only when plugged in, == always
<integer name="def_wifi_sleep_policy"></integer> //wifi休眠策略，2-永不修改
<bool name="def_networks_available_notification_on">true</bool>//當用戶使用網絡時是否通知 是
<bool name="def_backup_enabled">false</bool>//是否啟動設備備份 否
<!--string name="def_backup_transport" translatable="false">android/com.android.internal.backup.LocalTransport</string
<string name="def_backup_transport" translatable="false">com.google.android.backup/.BackupTransportService</string>
<!-- Default value for whether or not to pulse the notification LED when there is a
pending notification
<bool name="def_notification_pulse">true</bool>//當有通知時LED燈是否一直閃爍
<bool name="def_mount_play_notification_snd">true</bool>//當有MountService事件時是否播放通知音
<bool name="def_mount_ums_autostart">false</bool>//ums自動重啟 關
<bool name="def_mount_ums_prompt">true</bool>//
ums啟用時是否在通知欄提示
<bool name="def_mount_ums_notify_enabled">true</bool> //ums主機監控時顯示在通知欄
<!-- user interface sound effects
<integer name="def_power_sounds_enabled"></integer> //是否播放低電量聲音 1--是
<string name="def_low_battery_sound" translatable="false">/system/media/audio/ui/LowBattery.ogg</string>//低電量聲音文件
<integer name="def_dock_sounds_enabled"></integer>//插上充電座是否播放聲音 0-否
<string name="def_desk_dock_sound" translatable="false">/system/media/audio/ui/Dock.ogg</string>//插入家用底座時的音頻文件的URI
<string name="def_desk_undock_sound" translatable="false">/system/media/audio/ui/Undock.ogg</string>//拔出家用底座時的音頻文件的URI
<string name="def_car_dock_sound" translatable="false">/system/media/audio/ui/Dock.ogg</string>//插入車載底座時音頻文件的URI
<string name="def_car_undock_sound" translatable="false">/system/media/audio/ui/Undock.ogg</string>//拔出車載底座時音頻文件的URI
<integer name="def_lockscreen_sounds_enabled"></integer>//鎖屏是否播放聲音 0--否
<string name="def_lock_sound" translatable="false">/system/media/audio/ui/Lock.ogg</string>//鎖屏聲音文件
<string name="def_unlock_sound" translatable="false">/system/media/audio/ui/Unlock.ogg</string>//解鎖聲音文件
<string name="def_trusted_sound" translatable="false">/system/media/audio/ui/Trusted.ogg</string>
<string name="def_wireless_charging_started_sound" translatable="false">/system/media/audio/ui/WirelessChargingStarted.ogg</string> //開始無線充電音頻文件的URI
<bool name="def_lockscreen_disabled">true</bool> //是否禁用鎖屏
<bool name="def_device_provisioned">false</bool> //設備是否已提供
<integer name="def_dock_audio_media_enabled"></integer>
<!-- Notifications use ringer volume
<bool name="def_notifications_use_ring_volume">true</bool> 是否將鈴聲作為通知鈴聲使用
<!-- Default for Settings.System.VIBRATE_IN_SILENT
<bool name="def_vibrate_in_silent">true</bool>//靜音模式是否震動 是
<!-- Default for Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION
<bool name="def_accessibility_script_injection">false</bool> //是否啟用javascript注入來增強閱讀
<!-- Default for Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD
<bool name="def_accessibility_speak_password">false</bool>// 在可訪問模式時是否允許讀出密碼
<!-- Default for Settings.Secure.ACCESSIBILITY_WEB_CONTENT_KEY_BINDINGS
<string name="def_accessibility_web_content_key_bindings" translatable="false">
<!-- DPAD/Trackball UP - traverse previous on current axis and send an event.
0x13=0x01000100;
<!-- DPAD/Trackball DOWN - traverse next on current axis and send an event.
0x14=0x01010100;
<!-- DPAD/Trackball LEFT - traverse previous on the character navigation axis and send event.
0x15=0x02000001;
<!-- DPAD/Trackball RIGHT - traverse next on the character navigation axis end send event.
0x16=0x02010001;
<!-- Alt+DPAD/Trackball UP - go to the top of the document.
0x200000013=0x02000601;
<!-- Alt+DPAD/Trackball DOWN - go to the bottom of the document.
0x200000014=0x02010601;
<!-- Alt+DPAD/Trackball LEFT - transition from an axis to another and sends an event.
<!-- Axis transitions: -> ;
0x200000015=0x03020101;
<!-- Alt+DPAD/Trackball RIGHT - transition from an axis to another and sends an event.
<!-- Axis transitions: -> ;
0x200000016=0x03010201;
<!-- Alt+g - go to the previous heading and send an event.
0x200000023=0x02000301;
<!-- Alt+h - go to the next heading and send an event.
0x200000024=0x02010301;
<!-- Alt+COMMA - transition to sentence navigation axis and send an event.
<!-- Axis transitions: -> ;
0x200000037=0x03070201;
<!-- Alt+PERIOD - transition to default web view behavior axis and send an event.
<!-- Axis transitions: -> ; - > ; -> ;
0x200000038=0x03000701:0x03010701:0x03020701;
</string>
<!-- Default for Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION_URL
<string name="def_accessibility_screen_reader_url" translatable="false">
https://ssl.gstatic.com/accessibility/javascript/android/AndroidVox_v1.js
</string> //WebView用來展示基本閱讀的JavaScript的URL
<!-- Default for Settings.Secure.TOUCH_EXPLORATION_ENABLED
<bool name="def_touch_exploration_enabled">false</bool> //是否啟用觸控探測 否
<!-- Default value for Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_SCALE
<fraction name="def_accessibility_display_magnification_scale">%</fraction> //設置顯示放大的百分比
<!-- Default value for Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED
<bool name="def_accessibility_display_magnification_enabled">false</bool> //是否啟用可設置放大屏幕顯示比例 否
<!-- Default value for Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_AUTO_UPDATE
<bool name="def_accessibility_display_magnification_auto_update">true</bool>//是否允許屏幕放大比例自動更新 是
<!-- Default for Settings.System.USER_ROTATION
<integer name="def_user_rotation"></integer>//屏幕旋轉策略，默認啟用旋轉 0--否
<!-- Default for Settings.Secure.DOWNLOAD_MAX_BYTES_OVER_MOBILE. <= if no limit
<integer name="def_download_manager_max_bytes_over_mobile">-</integer> //下載時的最大速度，以字節為單位 -1-不限制
<!-- Default for Settings.Secure.DOWNLOAD_RECOMMENDED_MAX_BYTES_OVER_MOBILE. <= if no limit
<integer name="def_download_manager_recommended_max_bytes_over_mobile">-</integer> //下載時推薦的最大速度，以字節為單位 -1-不限制
<!-- Default for Settings.Secure.LONG_PRESS_TIMEOUT_MILLIS
<integer name="def_long_press_timeout_millis"></integer>//設置長按失效時長 500毫秒
<!-- Default for Settings.System.POINTER_SPEED
<integer name="def_pointer_speed"></integer> //屏幕是否可以旋轉 否
<!-- Default for DTMF tones enabled
<bool name="def_dtmf_tones_enabled">true</bool> //在撥號時撥號器是否啟用DTMF音調 是
<!-- M: Default for UI touch sounds disabled ,google defaulit is enable
<bool name="def_sound_effects_enabled">false</bool> //否啟用觸屏解鎖等音效反饋
<!-- Development settings
<bool name="def_stay_on_while_plugged_in">false</bool> //當充電時，是否保持喚醒狀態 否
<!-- Number of retries for connecting to DHCP.
Value here is the same as WifiStateMachine.DEFAULT_MAX_DHCP_RETRIES
<integer name="def_max_dhcp_retries"></integer> //最大重連次數
<!-- Default for Settings.Secure.USER_SETUP_COMPLETE
<bool name="def_user_setup_complete">false</bool> 當前用戶是否已經通過安裝向導設置 否
<!-- Default for Settings.Global.LOW_BATTERY_SOUND_TIMEOUT.
means no timeout; battery sounds will always play
> is milliseconds of screen-off time after which battery sounds will not play
<integer name="def_low_battery_sound_timeout"></integer>//低電量聲音在屏幕關閉后是否超時播放 0-代表超時毫秒
<!-- Initial value for the Settings.Secure.IMMERSIVE_MODE_CONFIRMATIONS setting,
which is a comma separated list of packages that no longer need confirmation
for immersive mode.
Override to disable immersive mode confirmation for certain packages.
<string name="def_immersive_mode_confirmations" translatable="false"></string>是否需要沉浸式模式
<!-- Default for Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE
<integer name="def_wifi_scan_always_available"></integer>//Wifi 是否一致掃描
<!-- Default for Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, ==on
<integer name="def_lock_screen_show_notifications"></integer>//鎖屏界面上展示通知
<!-- Default for Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS
<bool name="def_lock_screen_allow_private_notifications">true</bool> //鎖屏界面是否一直展示通知
<!-- Default for Settings.Global.HEADS_UP_NOTIFICATIONS_ENABLED, ==on
<integer name="def_heads_up_enabled"></integer>
<!-- Default for Settings.Global.DEVICE_NAME $=MANUFACTURER $=MODEL
<string name="def_device_name">%$s %$s</string>//設置多個設備名稱
<!-- Default for Settings.Global.DEVICE_NAME $=MODEL
<string name="def_device_name_simple">%$s</string>//設置單個設備名稱
<!-- Default for Settings.Secure.WAKE_GESTURE_ENABLED
<bool name="def_wake_gesture_enabled">true</bool>//手勢喚醒是否可用
<!-- Default for Settings.Global.GUEST_USER_ENABLED
<bool name="def_guest_user_enabled">true</bool>//手勢是否可以使用