Android系统中settings数据库应用

1.设置策略中的数据库
frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

2.sqlite3操作

/data/data/com.Android.providers.settings/databases/settings.db

sqlite3 settings.db                                                            

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SQLite version 3.8.6 2014-08-15 11:46:33  

Enter ".help" for usage hints.  

sqlite> .tables  

android_metadata   bookmarks          secure             

bluetooth_devices  global             system             

sqlite> select * from secure;  

1|location_providers_allowed|  

2|mock_location|0  

3|backup_enabled|0  

4|backup_transport|android/com.android.internal.backup.LocalTransport  

5|mount_play_not_snd|1  

6|mount_ums_autostart|0  

7|mount_ums_prompt|1  

8|mount_ums_notify_enabled|1  

9|accessibility_script_injection|0  

10|accessibility_web_content_key_bindings|0x13=0x01000100; 0x14=0x01010100; 0x15=0x02000001; 0x16=0x02010001; 0x200000013=0x02000601; 0x20000  

0014=0x02010601; 0x200000015=0x03020101; 0x200000016=0x03010201; 0x200000023=0x02000301; 0x200000024=0x02010301; 0x200000037=0x03070201; 0x20  

0000038=0x03000701:0x03010701:0x03020701;  

11|long_press_timeout|500  

12|touch_exploration_enabled|0  

13|speak_password|0  

14|accessibility_script_injection_url|https://ssl.gstatic.com/accessibility/javascript/android/AndroidVox_v1.js  

15|lockscreen.disabled|1  

16|screensaver_enabled|1  

17|screensaver_activate_on_dock|1  

18|screensaver_activate_on_sleep|1  

19|screensaver_components|com.google.android.deskclock/com.android.deskclock.Screensaver  

20|screensaver_default_component|com.google.android.deskclock/com.android.deskclock.Screensaver  

21|accessibility_display_magnification_enabled|0  

22|accessibility_display_magnification_scale|2.0  

23|accessibility_display_magnification_auto_update|1  

24|user_setup_complete|0  

25|immersive_mode_confirmations|  

26|install_non_market_apps|1  

27|wake_gesture_enabled|1  

28|lock_screen_show_notifications|1  

29|lock_screen_allow_private_notifications|1  

30|sleep_timeout|-1  

31|android_id|618e371bb8071a47  

33|input_methods_subtype_history|  

34|selected_input_method_subtype|-1  

35|lock_screen_owner_info_enabled|0  

36|default_input_method|com.android.inputmethod.pinyin/.PinyinIME  

37|trust_agents_initialized|1  

38|enabled_accessibility_services|com.iflytek.xiri/com.iflytek.xiri.XiriAccessibilityService  

39|accessibility_enabled|1  

40|enabled_input_methods|co
8b3f
m.android.inputmethod.pinyin/.PinyinIME  

sqlite> .quit  

3.例子

cd /data/data/com.android.providers.settings/databases

sqlite3 settings.db

sqlite>.dump

sqlite>select * from system;

24|sound_effects_enabled|0

sqlite>update system set value='1' where name='sound_effects_enabled';

sqlite>.quit