Overview Scope of application RK3399 Android7.1 Industry RK3399 Android10 RK356X Android11 RK3588 Android12 For other Android versions, it is available for reference. Modification method For Android system customization, there are generally Temporary modification methods and Code modification methods . Temporary modification method：Generally, the device can be operated through the debug serial port or ADB. Code modification method：After modifying the code, you need to perform SDK compilation and firmware flashing. Among them, SDK compilation or firmware flashing refer to WiKi tutorial 。 Glossary CPU_TYPE：Indicates the main control chip, such as rk3288, rk3399, rk3399pro, rk356x, rk3588 PRODUCT_TYPE：Indicates the product type, such as rk3399_firefly, rk3399_firefly_aio, rk3399_firefly_aioc_ai Custom description For the customized content of the system, there will be some differences in Android12, Android11, Android10.0 and Android7.1 Industry. This part of the content will be distinguished, and the undifferentiated content indicates compatibility. Boot logo animation modification The first stage Code modification method Prepare the logo Make a new logo.bmp The image attributes are the same as the default logo.bmp, otherwise an upside-down exception will occur Both width and height are even numbers Replace logo Replace kernel/logo.bmp Second stage Temporary modification method Prepare bootanimation.zip Prepare png file Both width and height are even numbers Prepare desc.txt file, such as 800 1280 30 p 0 0 part0 800 1280 30Meaning: the first two numbers represent the pixel width and height of the picture, 30 represents the number of frames, which is the number of pictures played in 1 second p 0 0 part0Meaning: p stands for flag bit, 0 stands for infinite loop, 0 stands for the interval time between stages is 0, part0 stands for the corresponding folder desc.txt text format: Unix+UTF-8 Make bootanimation.zip Compressed into a zip file in storage method Push bootanimation.zip adb shell setprop persist.sys.root_access 3 adb root adb remount adb push bootanimation.zip system/media/bootanimation.zip adb shell reboot Code modification method Prepare bootanimation.zip Put the prepared bootanimation.zip into the device/rockchip/CPU_TYPE/ directory In the device/rockchip/CPU_TYPE/device.mk file, add the following content: PRODUCT_COPY_FILES += \ device/rockchip/CPU_TYPE/boo tanimation.zip:/system/media/bootanimation.zip Default screen orientation modification Temporary modification method System readable and writable adb shell setprop persist.sys.root_access 3 adb root adb remount Modify or add attribute values Android7.1 In the /system/build.prop file, modify or add the value of ro.sf.hwrotation 0：Horizontal screen 90：Portrait 180：Reverse landscape 270：Reverse portrait Android10 and above In the vendor/build.prop file, modify or add the value of ro.surface_flinger.primary_display_orientation ORIENTATION_0 ：Horizontal screen ORIENTATION_90：Portrait ORIENTATION_180： Reverse landscape ORIENTATION_270：Reverse portrait System restart adb shell reboot Code modification method Android 7.1: In the file device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop, modify the value of ro.sf.hwrotation Android10 and above: In the file device/rockchip/CPU_TYPE/BoardConfig.mk, modify the value of SF_PRIMARY_DISPLAY_ORIENTATION 0：Horizontal screen 90：Portrait 180：Reverse landscape 270：Reverse portrait Delete build.prop in the out directory rm out/target/product/PRODUCT _TYPE/obj/ETC/system_build_prop_intermediates/build.prop Hide the status bar by default Temporary modification method In the Settings, just enable the option. "Settings"-->"Display"-->"Always hide the status bar" Code modification method The revised content is as follows diff --git a/frameworks/base/packa ges/SettingsProvider/res/values/custom_defaults.xml b/frameworks/base /packages/SettingsProvider/res/values/custom_defaults.xml index ba87da7ec4..e32c9699f9 100644 --- a/frameworks/base/packages/Settings Provider/res/values/custom_defaults.xml +++ b/frameworks/base/package s/SettingsProvider/res/values/custom_defaults.xml @@ -12,7 +12,7 @@ true - false + true Several ways of setting built-in APP Code modification method App folders can be added under the "vendor" directory Not uninstallable Refer to "vendor/firefly/fireflyapi" Contents in Android.mk LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := firefly_sdkapi_demo LOCAL_MODULE_CLASS := APPS LOCAL_MODULE_TAGS := optional LOCAL_BUILT_MODULE_STEM := package.apk LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX) #LOCAL_PRIVILEGED_MODULE := LOCAL_CERTIFICATE := platform #LOCAL_OVERRIDES_PACKAGES := LOCAL_SRC_FILES := $(LOCAL_MODULE).apk #LOCAL_REQUIRED_MODULES := #LOCAL_PREBUILT_JNI_LIBS := include $(BUILD_PREBUILT) LOCAL_CERTIFICATE := platform Meaning: APK signature uses system signature LOCAL_PRIVILEGED_MODULE If not set or set to false, the installation location is /system/app Contents in fireflyapi.mk PRODUCT_PACKAGES += \ firefly_sdkapi_demo PRODUCT_COPY_FILES += \ vendor/firefly/fireflyapi/fireflyapi:system/bin/fireflyapi \ v endor/firefly/fireflyapi/fireflyapi.jar:system/framework/fireflyapi.j ar Uninstallable mkdir device/rockchip/CPU_TYPE/PRODUCT_TYPE/preinstall_del copy apk to device/rockchip/CPU_TYPE/PRODUCT_TYPE/preinstall_del build android Setting of built-in default input method Code modification method Get the input method package name adb shell settings get secure enabled_input_methods com.android.inputmethod.latin/.LatinIME:com.ifl ytek.inputmethod.google/com.iflytek.inputmethod.FlyIME:com.google.and roid.inputmethod.pinyin/.PinyinIME adb shell settings get secure default_input_method com.iflytek.inputmethod.google/com.iflytek.inputmethod.FlyIME Modify the code as follows diff --git a/frameworks/base/packages/Set tingsProvider/res/values/custom_defaults.xml b/frameworks/base/packag es/SettingsProvider/res/values/custom_defaults.xml index ba87da7ec4..7ed79b4c15 100644 --- a/frameworks/base/packages/Settings Provider/res/values/custom_defaults.xml +++ b/frameworks/base/package s/SettingsProvider/res/values/custom_defaults.xml @@ -19,4 +19,7 @@ false + + com.android.inputme thod.latin/.LatinIME:com.iflytek.inputmethod.google/com.iflytek.input method.FlyIME:com.google.android.inputmethod.pinyin/.PinyinIME + com.i flytek.inputmethod.google/com.iflytek.inputmethod.FlyIME diff --git a/frameworks/base/packages/SettingsProvider/ src/com/android/providers/settings/DatabaseHelper.java b/frameworks/b ase/packages/SettingsProvider/src/com/android/providers/settings/Data baseHelper.java index cac5f800bd..f705a895b4 100644 --- a/frameworks/ base/packages/SettingsProvider/src/com/android/providers/settings/Dat abaseHelper.java +++ b/frameworks/base/packages/SettingsProvider/src/ com/android/providers/settings/DatabaseHelper.java @@ -2474,6 +2474,11 @@ class DatabaseHelper extends SQLiteOpenHelper { stmt = db.compileStatement("INSERT OR IGNORE INTO secure(name,value)" + " VALUES(?,?);"); + loadStringSetting(stmt, Settings.Secure.ENABLED_INPUT_METHODS, + R.string.enabled_input_methods); + loadStringSetting(stmt, Settings.Secure.DEFAULT_INPUT_METHOD, + R.string.def_input_method); + loadStringSetting(stmt, Settings.Secure.LOCATION_PROVIDERS_ALLOWED, R.string.def_location_providers_allowed); Delete built-in apps Temporary modification method adb shell setprop persist.sys.root_access 3 adb root adb remount adb shell rm -r system/app/APK_NAME/ adb shell reboot or adb shell setprop persist.sys.root_access 3 adb root adb remount adb shell rm -r system/priv-app/APK_NAME/ adb shell reboot Code modification method If the application has source code, comment out the include $(BUILD_PACKAGE) in the Android.mk file of the application source code If the application is an APK file and has Android.mk, comment out include $(BUILD_PREBUILT) in the Android.mk file Startup application Code modification method Non-launcher Add the following content to the AndroidManifest.xml in the application source code package="com.example.testfile" android:sharedUserId="android.uid.system"> Add the code for broadcast reception BootBroadcastReceiver.java, such as package com.example.testfile; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.util.Log; import android.widget.Toast; public class BootBroadcastReceiver extends BroadcastReceiver{ private static final String TAG = "sjft"; public static final String EXTRA_VOLUME_STATE = "android.os.storage.extra.VOLUME_STATE"; public static final int STATE_UNMOUNTED = 0; public static final int STATE_CHECKING = 1; public static final int STATE_MOUNTED = 2; public static final int STATE_MOUNTED_READ_ONLY = 3; public static final int STATE_FORMATTING = 4; public static final int STATE_EJECTING = 5; public static final int STATE_UNMOUNTABLE = 6; public static final int STATE_REMOVED = 7; public static final int STATE_BAD_REMOVAL = 8; @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub String action = intent.getAction(); if (action.equals("android.intent.action.PACKAGE_REPLACED")){ String packageName = intent.getData().getSchemeSpecificPart(); Log.v(TAG,"BootBroadcastReceiver packageName:"+packageName); if(context.getPackageName().equals(packageName)){ Intent launchIntent = new Intent(context, MainActivity.class);//Restart the app //If you don’t want to write the startup Activity, you can also get the default startup Activity by the following method //Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(packageName); launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(launchIntent); } } else if (action.equals("android.intent.action.BOOT_COMPLETED")){ String packageName = intent.getData().getSchemeSpecificPart(); Log.v(TAG,"BootBroadcastReceiver packageName:"+packageName); if(context.getPackageName().equals(packageName)){ Intent launchIntent = new Intent(context, MainActivity.class);//Restart the app //If you don’t want to write the startup Activity, you can also get the default startup Activity by the following method //Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(packageName); launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(launchIntent); } } } } app system signature (signature file) start app once Launcher Delete or not compile the Launcher application in the SDK Add the following content to the first activity started in AndroidManifest.xml in the application source code Modification of the default language The language support list can be viewed in "build/target/product/languages_full.mk". Temporary modification method System readable and writable adb shell setprop persist.sys.root_access 3 adb root adb remount Modify the value of ro.product.locale in the /system/build.prop file (Android10 and above: /vendor/build.prop) en-US: English zh-CN: Chinese System restart adb shell reboot Code modification method Modify the value of PRODUCT_LOCALES in build/target/product/full_base.mk Chinese PRODUCT_LOCALES := zh_CN Delete build.prop in the out directory rm out/target/product/PRODUCT _TYPE/obj/ETC/system_build_prop_intermediates/build.prop Modification of the default time zone The time zone support list can be viewed in "frameworks/base/packages/SettingsLib/res/xml/timezones.xml". Temporary modification method System readable and writable adb shell setprop persist.sys.root_access 3 adb root adb remount Modify the value of persist.sys.timezone in the /system/build.prop file (Android10 and above: /vendor/build.prop) Asia/Shanghai：UTC+8 System restart adb shell reboot Code modification method Android7.1/Android10 In the file device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop, modify the value of persist.sys.timezone Asia/Shanghai：UTC+8 Android11 and above Add the following content in the device/rockchip/CPU_TYPE/PRODUCT_TYPE/PRODUCT_TYPE.mk file: PRODUCT_PROPERTY_OVERRIDES += persist.sys.timezone=Asia/Shanghai Delete build.prop in the out directory rm out/target/product/PRODUCT _TYPE/obj/ETC/system_build_prop_intermediates/build.prop Default ROOT Temporary modification method adb shell setprop persist.sys.root_access 3 Code modification method Android7.1/Android10.0 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop file, add the following content: persist.sys.root_access=3 Android11 and above Add the following content in the device/rockchip/CPU_TYPE/PRODUCT_TYPE/PRODUCT_TYPE.mk file: PRODUCT_PROPERTY_OVERRIDES += persist.sys.root_access=3 Delete build.prop in the out directory rm out/target/product/PRODUCT _TYPE/obj/ETC/system_build_prop_intermediates/build.prop The default system time is 24 hours Code modification method diff --git a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml index f95ecc6535..06055dba7b 100644 --- a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml +++ b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml @@ -244,4 +244,6 @@ 0 + + 24 diff --git a/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java b/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java index b3ff9d08a8..ebdd5d3637 100644 --- a/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java +++ b/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java @@ -2261,6 +2261,9 @@ class DatabaseHelper extends SQLiteOpenHelper { private void loadSystemSettings(SQLiteDatabase db) { ...... + + loadStringSetting(stmt, Settings.System.TIME_12_24, + R.string.def_time_12_24); Open network ADB by default Temporary modification method Way one Android7.1 adb shell setprop persist.internet.adb.enable 1 Android10/Android11/Android12 adb shell setprop persist.internet_adb_enable 1 Way two Open "Developer Options" Open ADB over network Settings-->Developer options-->ADB over network Code modification method Android7.1/Android10 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop file, add the following content: persist.internet.adb.enable=1 Android10 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop file, add the following content: persist.internet_adb_enable=1 Android11/Android12 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/PRODUCT_TYPE.mk file, add the following content: PRODUCT_PROPERTY_OVERRIDES += persist.internet_adb_enable=1 Delete build.prop in the out directory rm out/target/product/PRODUCT _TYPE/obj/ETC/system_build_prop_intermediates/build.prop The default setting of OTG USB3.0 is devices mode Temporary modification method adb shell setprop persist.usb.mode 2 Code modification method Android7.1/Android10 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop file, add the following content: persist.usb.mode=2 Android11/Android12 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/PRODUCT_TYPE.mk file, add the following content: PRODUCT_PROPERTY_OVERRIDES += persist.usb.mode=otg Delete build.prop in the out directory rm out/target/product/PRODUCT _TYPE/obj/ETC/system_build_prop_intermediates/build.prop Turn on or turn off the installation of unknown apps Code modification method Android 7.1 In the "frameworks/base/packages/SettingsProvider/res/values/defaults.xml" file, modify the value of "def_install_non_market_apps". false : Close true : Open Android10 and above In Android10, the permanent authorization option of "Allow Unknown Sources" to install applications has been deleted. The switch is no longer found in the system settings. Google will modify the permanent authorization to a separate authorization each time. When the user installs a third party each time The source of the Android software requires manual confirmation of the software permissions. Turn touch sound on or off Code modification method In the "frameworks/base/packages/SettingsProvider/res/values/defaults.xml" file, modify the value of "def_sound_effects_enabled". false : Close true : Open Modify the desktop layout Code modification method After the device is turned on, the program shortcuts, small plug-ins, shortcut navigation bar (HotSeat) and folder modification methods that are loaded on the desktop by default. For details, please refer to the post of the open source community 。 Configure USB camera front or rear The default is front. Temporary modification method Front adb shell setprop persist.sys.uvc.facing front Back adb shell setprop persist.sys.uvc.facing back Code modification method Android7.1/Android10 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop file, add the following content: Front persist.sys.uvc.facing=front Back persist.sys.uvc.facing=back Android11/Android12 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/PRODUCT_TYPE.mk file, add the following content: Front PRODUCT_PROPERTY_OVERRIDES += persist.sys.uvc.facing=front Back PRODUCT_PROPERTY_OVERRIDES += persist.sys.uvc.facing=back Delete build.prop in the out directory rm out/target/product/PRODUCT _TYPE/obj/ETC/system_build_prop_intermediates/build.prop Configure 4K UI Code modification method： Platform(RK3399/RK3568) Android7.1 In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/system.prop file, add the following content: persist.sys.framebuffer.main=3840x2160@25 Android10.0 and above In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/PRODUCT_TYPE.mk file, add the following content: PRODUCT_PROPERTY_OVERRIDES += persist.vendor.framebuffer.main=3840x2160@25 NOTE : The 4K UI occupies a large amount of system resources and supports a maximum of about 4K25Hz. You are not recommended to use the 4K UI. If you just want to play it 4K video or view 4K pictures, it can not need to configure 4K UI, the system's default video player and picture browser can support. Platform(RK3588) Android12.0 and above In the device/rockchip/CPU_TYPE/PRODUCT_TYPE/PRODUCT_TYPE.mk file, add the following content: PRODUCT_PROPERTY_OVERRIDES += persist.vendor.framebuffer.main=3840x2160@60 NOTE :RK3588 has strong performance and supports 4K UI at 60Hz.