Android Settings和SettingsProvider源码分析与修改，android开发计算器界面

Resume函数：

@Override

public void onResume() {

super.onResume();

PreferenceGroup parentPreference = getPreferenceScreen();

mDevHitCountdown = getActivity().getSharedPreferences(DevelopmentSettings.PREF_FILE,

Context.MODE_PRIVATE).getBoolean(DevelopmentSettings.PREF_SHOW,

android.os.Build.TYPE.equals(“eng”)) ? -1 : TAPS_TO_BE_A_DEVELOPER;

mDevHitToast = null;

}

Setting的默认初始配置

frameworks/base/packages/SettingsProvider/res/values/default.xml

这里貌似可以修改很多东西，但要在

frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

中初始化才会生效：

true

/mnt/sdcard

true

60000

false

cell,bluetooth,wifi,nfc,wimax

bluetooth,wifi,nfc

true

102

false

100%

true

false

true

false

true

false

com.google.android.backup/.BackupTransportService

true

false

true

/system/media/audio/ui/LowBattery.ogg

/system/media/audio/ui/Dock.ogg

/system/media/audio/ui/Undock.ogg

/system/media/audio/ui/Dock.ogg

/system/media/audio/ui/Undock.ogg

/system/media/audio/ui/Lock.ogg

/system/media/audio/ui/Unlock.ogg

/system/media/audio/ui/WirelessChargingStarted.ogg

false

true

false

0x13=0x01000100;

0x14=0x01010100;

0x15=0x02000001;

0x16=0x02010001;

0x200000013=0x02000601;

0x200000014=0x02010601;

0x200000015=0x03020101;

0x200000016=0x03010201;

0x200000023=0x02000301;

0x200000024=0x02010301;

0x200000037=0x03070201;

0x200000038=0x03000701:0x03010701:0x03020701;

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

false

200%

false

true

-1

500

true

false

当然还有mtk_default.xml

修改完成后，在

frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

中的 private void loadGlobalSettings(SQLiteDatabase db) { … … }函数中增加初始化数据库的值：

然后执行：

./mk -t mm frameworks/base/packages/SettingsProvider/

生成目录：

out/target/product/esky82_tb_cn_kk/system/priv-app/SettingsProvider.apk

删除设置中情景模式的震动选项（会议模式和户外模式）

packages/apps/Settings/res/xml/audioprofile_settings.xml

注释掉会议模式和户外模式

packages/apps/Settings/res/xml/edit_profile_prefs.xml

注释掉：

<PreferenceCategory

android:key=“general”

android:title="@string/sound_category_sound_title"/>

<com.mediatek.audioprofile.RingerVolumePreference

android:key=“ring_volume”

android:title="@string/all_volume_title"

android:dialogTitle="@string/all_volume_title"

android:persistent=“false”/>

packages/apps/Settings/src/com/medietek/audrioprofile/AduioProfileSettings.java

注释掉public void onCreate(Bundle icicle) {}中以下几行代码：

//pref = (AudioProfilePreference) findPreference(MEETING_PREF_KEY);

//pref.setOnSettingsClickListener(mProfileSettingListener);

//pref = (AudioProfilePreference) findPreference(OUTDOOR_PREF_KEY);

//pref.setOnSettingsClickListener(mProfileSettingListener);

或者改成以下：

这个方案得：import android.os.SystemProperties;

if (!SystemProperties.get(“ro.project.target”).equals(“es706”)) {

// Do nothing

} else {

pref = (AudioProfilePreference) findPreference(MEETING_PREF_KEY);

pref.setOnSettingsClickListener(mProfileSettingListener);

pref = (AudioProfilePreference) findPreference(OUTDOOR_PREF_KEY);

pref.setOnSettingsClickListener(mProfileSettingListener);

}

packages/apps/Settings/src/com/medietek/audrioprofile/Editprofile.java

private void initPreference() {}中注释以下：

// mVibrat = (CheckBoxPreference) findPreference(KEY_VIBRATE);

… …

// mVibrat.setEnabled(false);

还有这里，总之搜索mVibrat的结果都注释掉或者加个判断：

if (!isSmsCapable()) {

// parent.removePreference(mVibrat);

}

private void updatePreference() {

// mVibrat.setChecked(mProfileManager.getVibrationEnabled(mKey));

… …

还有这一大段：

// if (mVibrat != null) {

// final String name = AudioProfileManager.getVibrationKey(mKey);

// Xlog.d(TAG,"name " + name);

// String vibrateEnabled = Settings.System.getString(

// getContentResolver(), name);

// if (vibrateEnabled != null) {

// mVibrat.setChecked(“true”

// .equals(vibrateEnabled));

// Xlog.d(TAG,

// "vibrate setting is "

// + “true”.equals(vibrateEnabled));

// }

还有：

public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,

Preference preference) {

Xlog.d(TAG, “Key :” + preference.getKey());

// if ((preference.getKey()).equals(KEY_VIBRATE)) {

// boolean isVibrate = mVibrat.isChecked();

// Xlog.d(TAG, “set vibrate” + isVibrate);

// mProfileManager.setVibrationEnabled(mKey, isVibrate);

// } else

显示设置中增加“永不休眠”功能

首先在frameworks\base\packages\SettingsProvider\res\values\defaults.xml中设置def_screen_off_timeout为-1，即

-1

然后修改alps\packages\apps\Settings\res\values\arrays.xml:

15 seconds

30 seconds

1 minute

2 minutes

10 minutes

30 minutes

never

15000

30000

60000

120000

600000

1800000

-1

接着修改对比语言value文件夹下的arrays.xml, 修改screen_timeout_entries对应的翻译。不用管那个msgid，只是google用来表示是他自己的资源而已，直接添加"永不休眠"即可。

然后是代码的改动：

frameworks/base/services/java/com/android/server/power/PowerManagerService.java

private void updateUserActivitySummaryLocked(long now, int dirty) {

…

//change code here ==============

Slog.d(TAG,“mScreenOffTimeoutSetting =”+mScreenOffTimeoutSetting);

//if (mUserActivitySummary != 0 ) {

if (mUserActivitySummary != 0 && mScreenOffTimeoutSetting > 0) {

//change code here end ==============

Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT);

msg.setAsynchronous(true);

mHandler.sendMessageAtTime(msg, nextTimeout);

}

Android修改应用的默认安装位置

Google默认的PackageManager，会读取应用AndroidManifest.xml的对应定义

installLocation规则如下：

1.如果没有定义安装位置，表示安装在手机内存上；

2.android:installLocation =“auto” :先查看手机内存是否足够，如果够就安装在手机内存上，不够就安装在T 卡上；

3.android:installLocation = “internalOnly”:表示安装在手机内存上；

4.android:installLocation = “preferExternal”:表示安装在 T 卡上；

如何在设置中增加“选取应用安装位置”的功能，让用户选择默认的安装位置？

修改如下文件：frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

将

loadSetting(stmt, Global.SET_INSTALL_LOCATION, 0);

改为：

loadSetting(stmt, Secure.SET_INSTALL_LOCATION, 1);

并将

loadSetting(stmt, Settings.Secure.SET_INSTALL_LOCATION, 0);

改为：

loadSetting(stmt, Settings.Secure.SET_INSTALL_LOCATION, 1);

这样修改之后，在设置>应用中会出现“选取应用安装位置”的功能，不过无论在这里选择什么，对于应用中AndroidManifest.xml文件中声明

android:installLocation = “internalOnly”

的，该apk 都会安装到手机上，这样做的好处是避免程序运行错误，因为定义android:installLocation = “internalOnly” 的 apk 一般要安装到手机内存上才能正常运行。

默认输入法勾选多国语言，并默认其中一种语言

1.首先在设备上调整输入法

设置>语言输入法>Android键盘(AOSP)，在输入语言里勾选要选择的语言，比如选“英语(美国)”和“西班牙文”两种：

2.选择系统输入法的默认语言（默认为两种语言中的“西班牙文”）

打开一个能能调出输入法的应用，下拉通知栏里，“选择输入法”调整为“西班牙文”

3.查看Setting数据库文件

adb pull data/data/com.android.providers.settings/databases/settings.db C:\

打开Secure表，查看default_input_method，enabled_input_methods和selected_input_method_subtype三个字段内容，并记录：

default_input_method com.android.inputmethod.latin/.LatinIME

enabled_input_methods com.android.inputmethod.latin/.LatinIME;816242702;-921088104

selected_input_method_subtype 816242702

4.修改SettingsProvider文件

frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

将函数private void loadSecureSettings(SQLiteDatabase db) 中的以下两行（注意是loadSecureSettings函数，不是loadSystemSettings）：

loadSetting(stmt, Settings.Secure.ENABLED_INPUT_METHODS, defaultIme);

loadSetting(stmt, Settings.Secure.DEFAULT_INPUT_METHOD, defaultIme);

修改为以下三行：

loadSetting(stmt, Settings.Secure.ENABLED_INPUT_METHODS,“com.android.inputmethod.latin/.LatinIME;816242702;-921088104”);//选中的输入法

loadSetting(stmt, Settings.Secure.DEFAULT_INPUT_METHOD, “com.android.inputmethod.latin/.LatinIME”);// 默认输入法为系统输入法

loadSetting(stmt, Settings.Secure.SELECTED_INPUT_METHOD_SUBTYPE, “816242702”); // 默认输入法的默认语言

android.provider.Settings的Secure和System常量

android.provider.Settings.Secure常量

String ACCESSIBILITY_DISPLAY_INVERSION_ENABLEDSetting that specifies whether display color inversion is enabled.

String ACCESSIBILITY_ENABLED If accessibility is enabled.

String ACCESSIBILITY_SPEAK_PASSWORD Whether to speak passwords while in accessibility mode.

String ADB_ENABLED This constant was deprecated in API level 17. Use ADB_ENABLED instead

String ALLOWED_GEOLOCATION_ORIGINS Origins for which browsers should allow geolocation by default.

String ALLOW_MOCK_LOCATION Setting to allow mock locations and location provider status to be injected into the LocationManager service for testing purposes during application development.

String ANDROID_ID A 64-bit number (as a hex string) that is randomly generated when the user first sets up the device and should remain constant for the lifetime of the user’s device.

String BACKGROUND_DATA This constant was deprecated in API level 14. As of ICE_CREAM_SANDWICH, availability of background data depends on several combined factors. When background data is unavailable, getActiveNetworkInfo() will now appear disconnected.

String BLUETOOTH_ON This constant was deprecated in API level 17. Use BLUETOOTH_ON instead

String DATA_ROAMING This constant was deprecated in API level 17. Use DATA_ROAMING instead

String DEFAULT_INPUT_METHOD Setting to record the input method used by default, holding the ID of the desired method.

String DEVELOPMENT_SETTINGS_ENABLED This constant was deprecated in API level 17. Use DEVELOPMENT_SETTINGS_ENABLED instead

String DEVICE_PROVISIONED This constant was deprecated in API level 17. Use DEVICE_PROVISIONED instead

String ENABLED_ACCESSIBILITY_SERVICES List of the enabled accessibility providers.

String ENABLED_INPUT_METHODS List of input methods that are currently enabled.

String HTTP_PROXY This constant was deprecated in API level 17. Use HTTP_PROXY

String INPUT_METHOD_SELECTOR_VISIBILITY Setting to record the visibility of input method selector

String INSTALL_NON_MARKET_APPS Whether applications can be installed for this user via the system’s ACTION_INSTALL_PACKAGE mechanism.

String LOCATION_MODE The degree of location access enabled by the user.

int LOCATION_MODE_BATTERY_SAVING Reduced power usage, such as limiting the number of GPS updates per hour.

int LOCATION_MODE_HIGH_ACCURACY Best-effort location computation allowed.

int LOCATION_MODE_OFF Location access disabled.

int LOCATION_MODE_SENSORS_ONLY Network Location Provider disabled, but GPS and other sensors enabled.

String LOCATION_PROVIDERS_ALLOWED This constant was deprecated in API level 19. use LOCATION_MODE and MODE_CHANGED_ACTION (or PROVIDERS_CHANGED_ACTION)

String LOCK_PATTERN_ENABLED Whether autolock is enabled (0 = false, 1 = true)

String LOCK_PATTERN_TACTILE_FEEDBACK_ENABLED This constant was deprecated in API level 17. Starting in JELLY_BEAN_MR1 the lockscreen uses HAPTIC_FEEDBACK_ENABLED.

String LOCK_PATTERN_VISIBLE Whether lock pattern is visible as user enters (0 = false, 1 = true)

String LOGGING_ID This constant was deprecated in API level 3. This identifier is poorly initialized and has many collisions. It should not be used.

String NETWORK_PREFERENCE This constant was deprecated in API level 17. Use NETWORK_PREFERENCE instead

String PARENTAL_CONTROL_ENABLED No longer supported.

String PARENTAL_CONTROL_LAST_UPDATE No longer supported.

String PARENTAL_CONTROL_REDIRECT_URL No longer supported.

String SELECTED_INPUT_METHOD_SUBTYPE Setting to record the input method subtype used by default, holding the ID of the desired method.

String SETTINGS_CLASSNAME Settings classname to launch when Settings is clicked from All Applications.

String SYS_PROP_SETTING_VERSION

String TOUCH_EXPLORATION_ENABLED If touch exploration is enabled.

String TTS_DEFAULT_COUNTRY This constant was deprecated in API level 14. this setting is no longer in use, as o

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f the Ice Cream Sandwich release. Apps should never need to read this setting directly, instead can query the TextToSpeech framework classes for the default locale. getLanguage().

String TTS_DEFAULT_LANG This constant was deprecated in API level 14. this setting is no longer in use, as of the Ice Cream Sandwich release. Apps should never need to read this setting directly, instead can query the TextToSpeech framework classes for the default locale. getLanguage().

String TTS_DEFAULT_PITCH Default text-to-speech engine pitch.

String TTS_DEFAULT_RATE Default text-to-speech engine speech rate.

String TTS_DEFAULT_SYNTH Default text-to-speech engine.

String TTS_DEFAULT_VARIANT This constant was deprecated in API level 14. this setting is no longer in use, as of the Ice Cream Sandwich release. Apps should never need to read this setting directly, instead can query the TextToSpeech framework classes for the locale that is in use getLanguage().

String TTS_ENABLED_PLUGINS Space delimited list of plugin packages that are enabled.

String TTS_USE_DEFAULTS This constant was deprecated in API level 14. The value of this setting is no longer respected by the framework text to speech APIs as of the Ice Cream Sandwich release.

String USB_MASS_STORAGE_ENABLED This constant was deprecated in API level 17. Use USB_MASS_STORAGE_ENABLED instead

String USE_GOOGLE_MAIL This constant was deprecated in API level 17. Use USE_GOOGLE_MAIL instead

String WIFI_MAX_DHCP_RETRY_COUNT This constant was deprecated in API level 17. Use WIFI_MAX_DHCP_RETRY_COUNT instead

String WIFI_MOBILE_DATA_TRANSITION_WAKELOCK_TIMEOUT_MS This constant was deprecated in API level 17. Use WIFI_MOBILE_DATA_TRANSITION_WAKELOCK_TIMEOUT_MS instead

String WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON This constant was deprecated in API level 17. Use WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON instead.

String WIFI_NETWORKS_AVAILABLE_REPEAT_DELAY This constant was deprecated in API level 17. Use WIFI_NETWORKS_AVAILABLE_REPEAT_DELAY instead.

String WIFI_NUM_OPEN_NETWORKS_KEPT This constant was deprecated in API level 17. Use WIFI_NUM_OPEN_NETWORKS_KEPT instead.

String WIFI_ON This constant was deprecated in API level 17. Use WIFI_ON instead.

String WIFI_WATCHDOG_ACCEPTABLE_PACKET_LOSS_PERCENTAGE This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_AP_COUNT This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_BACKGROUND_CHECK_DELAY_MS This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_BACKGROUND_CHECK_ENABLED This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_BACKGROUND_CHECK_TIMEOUT_MS This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_INITIAL_IGNORED_PING_COUNT This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_MAX_AP_CHECKS This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_ON This constant was deprecated in API level 17. Use WIFI_WATCHDOG_ON instead

String WIFI_WATCHDOG_PING_COUNT This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_PING_DELAY_MS This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_PING_TIMEOUT_MS This constant was deprecated in API level 14. This setting is not used.

String WIFI_WATCHDOG_WATCH_LISTThis constant was deprecated in API level 14. This setting is not used.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

android.provider.Settings.System常量

StringACCELEROMETER_ROTATIONControl whether the accelerometer will be used to change screen orientation.

StringADB_ENABLEDThis constant was deprecated in API level 3. Use ADB_ENABLED instead

StringAIRPLANE_MODE_ONThis constant was deprecated in API level 17. Use AIRPLANE_MODE_ON instead

StringAIRPLANE_MODE_RADIOSThis constant was deprecated in API level 17. Use AIRPLANE_MODE_RADIOS instead

StringALARM_ALERTPersistent store for the system-wide default alarm alert.

StringALWAYS_FINISH_ACTIVITIESThis constant was deprecated in API level 17. Use ALWAYS_FINISH_ACTIVITIES instead

StringANDROID_IDThis constant was deprecated in API level 3. Use ANDROID_ID instead

StringANIMATOR_DURATION_SCALEThis constant was deprecated in API level 17. Use ANIMATOR_DURATION_SCALE instead

StringAPPEND_FOR_LAST_AUDIBLEAppended to various volume related settings to record the previous values before they the settings were affected by a silent/vibrate ringer mode change.

StringAUTO_TIMEThis constant was deprecated in API level 17. Use AUTO_TIME instead

StringAUTO_TIME_ZONEThis constant was deprecated in API level 17. Use AUTO_TIME_ZONE instead

StringBLUETOOTH_DISCOVERABILITYDetermines whether remote devices may discover and/or connect to this device.

StringBLUETOOTH_DISCOVERABILITY_TIMEOUTBluetooth discoverability timeout.

StringBLUETOOTH_ONThis constant was deprecated in API level 3. Use BLUETOOTH_ON instead

StringDATA_ROAMINGThis constant was deprecated in API level 3. Use DATA_ROAMING instead

StringDATE_FORMATDate format string mm/dd/yyyy dd/mm/yyyy yyyy/mm/dd

StringDEBUG_APPThis constant was deprecated in API level 17. Use DEBUG_APP instead

StringDEVICE_PROVISIONEDThis constant was deprecated in API level 3. Use DEVICE_PROVISIONED instead

StringDIM_SCREENThis constant was deprecated in API level 17. This setting is no longer used.

StringDTMF_TONE_WHEN_DIALINGWhether the audible DTMF tones are played by the dialer when dialing.

StringEND_BUTTON_BEHAVIORWhat happens when the user presses the end call button if they’re not on a call.

silent/vibrate ringer mode change.