Java – 第5页 – 蓝天白云

关于Zygote Server的一些问题

分类：Android, Java 阅读 (1,063) 已关闭评论

5月 112020

既然Zygote Server是使用网络通讯，为什么普通应用不能和它通讯？

笔者本来以为zygote是通过127.0.0.1这种方式创建的server，所以会有此疑问。经过研究发现，zygote是通过文件建立的socket server(具体文件名/dev/socket/zygote)，并且zygote是以root权限运行的，所以它生成的socket文件普通应用是无法进行通讯的。

Android8.1系统多国语言包删减

分类：Android, Java 阅读 (84) 已关闭评论

5月 072020

删除framework层不使用语言配置文件

删除目录frameworks/base/core/res/res/下面的除了简体中文zh-rCN、繁体中文zh-rTW、zh-rHK和英文en-rXX之外的相关语言资源文件

删除前system.img文件为1.2G左右

删除后system.img文件为1.1G左右

删除设置应用中的不使用的语言选择列表

在frameworks/base/core/res/res/values/locale_config.xml中删除不使用的语言即可

Ubuntu18.04.4编译Nxp android_o8.1.0_2.1.0-auto-GA版本安卓系统源码

分类：Android, Java 阅读 (1,371) 已关闭评论

4月 132020

一、环境准备

Ubuntu18.04.4，不能使用Ubuntu16会有很多依赖软件版本太低

硬盘200G，内存4G+，交换分区（swap）4G+(可装完系统后添加，见后面错误处理部分)

二、下载源码

官方源码下载脚本链接：https://www.nxp.com/webapp/Download?colCode=O8.1.0_2.1.0_AUTO_GA_SOURCE&appType=license&location=null

三、安装编译时需要的第三方库

sudo apt-get install git-core gnupg flex bison gperf build-essential zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache libgl1-mesa-dev libxml2-utils xsltproc unzip

sudo apt install uuid uuid-dev zlib1g-dev liblz-dev liblzo2-2 liblzo2-dev lzop git-core curl u-boot-tools mtd-utils android-tools-fsutils device-tree-compiler gdisk liblz4-tool m4 libz-dev

安装open-jdk-8

sudo add-apt-repository ppa:openjdk-r/ppa

sudo apt-get update

sudo apt-get install openjdk-8-jdk

安装gcc-arm-none-eabi

sudo apt-get install gcc-arm-none-eabi

安装完这一项后，在~/.bashrc中最后一行添加脚本export ARMGCC_DIR=/usr/

然后执行source ~/.bashrc

安装cmake，需要3.13.0版本以上，安装步骤如下，其中./bootstrap那一步可以不用加后面的–qt-gui参数
https://blog.csdn.net/huigougou/article/details/84326907

四、开始编译

　　然后进入到Android源码目录，假设源码在用户根目录的aosp目录中：

cd ~/aosp

　　然后初始化编译环境，使用下面的命令：

source build/envsetup.sh

　　然后选择要编译的目标版本，先输入lunch命令

lunch

　　然后在显示的列表中选择你的目标版本，输入相应的数字，按回车即可

　　然后使用make开始编译，可以使用-j参数增加编译的线程以提高速度，线程数量为cpu核心数的2倍比较合适，比如你的cpu是4核的使用

make -j8

　　就可以了

五、遇到的问题

1. 错误：flex-2.5.39: loadlocale.c:130: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))’ failed.
Aborted (core dumped)

解决办法：
This will do the trick:

export LC_ALL=C

Add it to your bashrc file or equivalent.
参考链接：https://stackoverflow.com/questions/49955137/error-when-build-lineageos-make-ninja-wrapper-error-1
https://www.jianshu.com/p/2beae17c9b12

2、错误2：
JackServer提示out of memory

解决方案：
修改jack server内存
步骤：
打开./prebuilts/sdk/tools/jack-admin
找到下面这一行
JACK_SERVER_VM_ARGUMENTS=”${JACK_SERVER_VM_ARGUMENTS:=-Dfile.encoding=UTF-8}”
修改为
JACK_SERVER_VM_ARGUMENTS=”${JACK_SERVER_VM_ARGUMENTS:=-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx4096M}”
保存jack-admin文件
在命令行执行
./prebuilts/sdk/tools/jack-admin kill-server
./prebuilts/sdk/tools/jack-admin start-server
重启jack server
然后重新编译

Android Studio报Cannot find a version of ‘com.android.support:support-annotations’错误

分类：Android, Java 阅读 (3,096) 已关闭评论

4月 122020

生成签名apk时，Android Studio报如下错误：

Could not determine the dependencies of task ':app:lintVitalAilifenRelease'.
> Could not resolve all artifacts for configuration ':app:wanjiaDebugAndroidTestRuntimeClasspath'.
   > Could not resolve com.android.support:support-annotations:{strictly 26.1.0}.
     Required by:
         project :app
      > Cannot find a version of 'com.android.support:support-annotations' that satisfies the version constraints: 
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support.test:runner:1.0.2' --> 'com.android.support:support-annotations:27.1.1'
           Constraint path 'simplescales:app:unspecified' --> 'com.android.support:support-annotations:{strictly 26.1.0}' because of the following reason: wanjiaDebugRuntimeClasspath uses version 26.1.0
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support:appcompat-v7:26.1.0' --> 'com.android.support:support-annotations:26.1.0'
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support:recyclerview-v7:26.1.0' --> 'com.android.support:support-annotations:26.1.0'
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support.test:runner:1.0.2' --> 'com.android.support.test:monitor:1.0.2' --> 'com.android.support:support-annotations:27.1.1'
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support:appcompat-v7:26.1.0' --> 'com.android.support:support-vector-drawable:26.1.0' --> 'com.android.support:support-annotations:26.1.0'
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-compat:26.1.0' --> 'com.android.support:support-annotations:26.1.0'
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-media-compat:26.1.0' --> 'com.android.support:support-annotations:26.1.0'
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-core-utils:26.1.0' --> 'com.android.support:support-annotations:26.1.0'
           Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-core-ui:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

Could not determine the dependencies of task ':app:lintVitalAilifenRelease'.

> Could not resolve all artifacts for configuration ':app:wanjiaDebugAndroidTestRuntimeClasspath'.

> Could not resolve com.android.support:support-annotations:{strictly 26.1.0}.

Required by:

project :app

> Cannot find a version of 'com.android.support:support-annotations' that satisfies the version constraints:

Dependency path 'simplescales:app:unspecified' --> 'com.android.support.test:runner:1.0.2' --> 'com.android.support:support-annotations:27.1.1'

Constraint path 'simplescales:app:unspecified' --> 'com.android.support:support-annotations:{strictly 26.1.0}' because of the following reason: wanjiaDebugRuntimeClasspath uses version 26.1.0

Dependency path 'simplescales:app:unspecified' --> 'com.android.support:appcompat-v7:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

Dependency path 'simplescales:app:unspecified' --> 'com.android.support:recyclerview-v7:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

Dependency path 'simplescales:app:unspecified' --> 'com.android.support.test:runner:1.0.2' --> 'com.android.support.test:monitor:1.0.2' --> 'com.android.support:support-annotations:27.1.1'

Dependency path 'simplescales:app:unspecified' --> 'com.android.support:appcompat-v7:26.1.0' --> 'com.android.support:support-vector-drawable:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-compat:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-media-compat:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-core-utils:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

Dependency path 'simplescales:app:unspecified' --> 'com.android.support:support-v4:26.1.0' --> 'com.android.support:support-core-ui:26.1.0' --> 'com.android.support:support-annotations:26.1.0'

解决办法：

在app/build.gradle中加入以下依赖

implementation 'com.android.support:support-annotations:28.0.0'

1	implementation 'com.android.support:support-annotations:28.0.0'

Android Studio. CMake was unable to find a build program corresponding to “Ninja”

分类：Android, Java 阅读 (2,858) 已关闭评论

4月 122020

编译项目时出现下面的错误：

CMake Error: CMake was unable to find a build program corresponding to “Ninja”. CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.

解决办法：

把项目的build.gradle中的buildscript下面dependencies里的gradle的版本升级以下就行了

buildscript {

    repositories {
        google()
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter' }
        maven { url 'http://maven.aliyun.com/nexus/content/repositories/google' }
        maven { url 'http://maven.aliyun.com/nexus/content/repositories/gradle-plugin' }
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.3'
        

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

buildscript {

repositories {

google()

maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }

maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter' }

maven { url 'http://maven.aliyun.com/nexus/content/repositories/google' }

maven { url 'http://maven.aliyun.com/nexus/content/repositories/gradle-plugin' }

jcenter()

}

dependencies {

classpath 'com.android.tools.build:gradle:3.5.3'

// NOTE: Do not place your application dependencies here; they belong

// in the individual module build.gradle files

}

原来是：

classpath 'com.android.tools.build:gradle:3.5.3'

1	classpath 'com.android.tools.build:gradle:3.5.3'

Android系统源码中SeLinux的配置

分类：Android, Java 阅读 (3,533) 已关闭评论

3月 312020

模块中定义的sepolicy策略文件目录如下加入到系统编译中：

在BoardConfig.mk中找BOARD_SEPOLICY_DIRS，将你的sepolicy目录加到这个变量中，如下所示：

BOARD_SEPOLICY_DIRS := \
       device/fsl/imx8/sepolicy \
       packages/services/Car/evs/sepolicy \
       device/fsl/mek_8q/sepolicy

BOARD_SEPOLICY_DIRS := \

device/fsl/imx8/sepolicy \

packages/services/Car/evs/sepolicy \

device/fsl/mek_8q/sepolicy

如何定义域？

在/system/sepolicy/public/attributes文件中输入如下的行来定义

attribute evs_domain;

1	attribute evs_domain;

如何定义某个目录或者应用文件的安全上下文？

首先在/system/sepolicy/private/file_contexts中定义如下：

/system/bin/my_app                                          u:object_r:my_app_exec:s0

1	/system/bin/my_app u:object_r:my_app_exec:s0

然后创建my_app.te的文件来定义具体的规则：

根据logcat中的avc denied的log生成合适的seLinux规则。

我们可以在logcat中看到类似如下的日志：

04-01 07:55:37.768  5155  5155 I evs_app : type=1400 audit(0.0:20): avc: denied { read } for name="egl" dev="mmcblk0p4" ino=1732 scontext=u:r:evs_app:s0 tcontext=u:object_r:system_file:s0 tclass=dir permissive=1
04-01 07:55:37.768  5155  5155 I evs_app : type=1400 audit(0.0:21): avc: denied { open } for path="/system/lib64/egl" dev="mmcblk0p4" ino=1732 scontext=u:r:evs_app:s0 tcontext=u:object_r:system_file:s0 tclass=dir permissive=1
04-01 07:55:37.768  2879  2879 E SELinux : avc:  denied  { find } for interface=android.hardware.automotive.vehicle::IVehicle pid=5155 scontext=u:r:evs_app:s0 tcontext=u:object_r:hal_vehicle_hwservice:s0 tclass=hwservice_manager permissive=1
04-01 07:55:37.936  5155  5155 I evs_app : type=1400 audit(0.0:22): avc: denied { call } for scontext=u:r:evs_app:s0 tcontext=u:r:hal_configstore_default:s0 tclass=binder permissive=1
04-01 07:55:37.941  2879  2879 E SELinux : avc:  denied  { find } for interface=android.hardware.configstore::ISurfaceFlingerConfigs pid=5155 scontext=u:r:evs_app:s0 tcontext=u:object_r:hal_configstore_ISurfaceFlingerConfigs:s0 tclass=hwservice_manager permissive=1
04-01 07:55:42.928  5181  5181 I evs_app : type=1400 audit(0.0:23): avc: denied { call } for scontext=u:r:evs_app:s0 tcontext=u:r:hal_configstore_default:s0 tclass=binder permissive=1

04-01 07:55:37.768 5155 5155 I evs_app : type=1400 audit(0.0:20): avc: denied { read } for name="egl" dev="mmcblk0p4" ino=1732 scontext=u:r:evs_app:s0 tcontext=u:object_r:system_file:s0 tclass=dir permissive=1

04-01 07:55:37.768 5155 5155 I evs_app : type=1400 audit(0.0:21): avc: denied { open } for path="/system/lib64/egl" dev="mmcblk0p4" ino=1732 scontext=u:r:evs_app:s0 tcontext=u:object_r:system_file:s0 tclass=dir permissive=1

04-01 07:55:37.768 2879 2879 E SELinux : avc: denied { find } for interface=android.hardware.automotive.vehicle::IVehicle pid=5155 scontext=u:r:evs_app:s0 tcontext=u:object_r:hal_vehicle_hwservice:s0 tclass=hwservice_manager permissive=1

04-01 07:55:37.936 5155 5155 I evs_app : type=1400 audit(0.0:22): avc: denied { call } for scontext=u:r:evs_app:s0 tcontext=u:r:hal_configstore_default:s0 tclass=binder permissive=1

04-01 07:55:37.941 2879 2879 E SELinux : avc: denied { find } for interface=android.hardware.configstore::ISurfaceFlingerConfigs pid=5155 scontext=u:r:evs_app:s0 tcontext=u:object_r:hal_configstore_ISurfaceFlingerConfigs:s0 tclass=hwservice_manager permissive=1

04-01 07:55:42.928 5181 5181 I evs_app : type=1400 audit(0.0:23): avc: denied { call } for scontext=u:r:evs_app:s0 tcontext=u:r:hal_configstore_default:s0 tclass=binder permissive=1

我们可以通过audit2allow工具把上面的log转换成合适的规则，配置在策略文件中，如果没有安装过这个工具先安装工具，如下：

sudo apt install policycoreutils

1	sudo apt install policycoreutils

将相关的log保存到一个文件中，如avclog.txt，然后执行下面的命令来生成规则：

audit2allow -i avclog.txt

1	audit2allow -i avclog.txt

MPAndroidChart去掉Description Label的显示

分类：Android, Java 阅读 (1,544) 已关闭评论

3月 312020

在生成的图表中，右下角总显示一个Description Label字符，用下面的代码去掉：

        Description description = new Description();
        description.setText("");
        lineChart.setDescription(description);

Description description = new Description();

description.setText("");

lineChart.setDescription(description);

Android系统中的locksettings命令

分类：Android, Android, Java, Operating System 阅读 (3,755) 已关闭评论

3月 202020

本文基于Android8.1系统

进入Android系统的命令行控制台，可以通过locksettings命令来设置锁屏的一些选项，比如开启或者禁止锁屏，设置密码等

命令行的帮助如下：

usage: locksettings set-pattern [--old OLD_CREDENTIAL] NEW_PATTERN
       locksettings set-pin [--old OLD_CREDENTIAL] NEW_PIN
       locksettings set-password [--old OLD_CREDENTIAL] NEW_PASSWORD
       locksettings clear [--old OLD_CREDENTIAL]
       locksettings verify [--old OLD_CREDENTIAL]
       locksettings set-disabled DISABLED
       locksettings get-disabled

flags: 
       --user USER_ID: specify the user, default value is current user

locksettings set-pattern: sets a pattern
    A pattern is specified by a non-separated list of numbers that index the cell
    on the pattern in a 1-based manner in left to right and top to bottom order,
    i.e. the top-left cell is indexed with 1, whereas the bottom-right cell
    is indexed with 9. Example: 1234

locksettings set-pin: sets a PIN

locksettings set-password: sets a password

locksettings clear: clears the unlock credential

locksettings verify: verifies the credential and unlocks the user

locksettings set-disabled: sets whether the lock screen should be disabled

locksettings get-disabled: retrieves whether the lock screen is disabled

usage: locksettings set-pattern [--old OLD_CREDENTIAL] NEW_PATTERN

locksettings set-pin [--old OLD_CREDENTIAL] NEW_PIN

locksettings set-password [--old OLD_CREDENTIAL] NEW_PASSWORD

locksettings clear [--old OLD_CREDENTIAL]

locksettings verify [--old OLD_CREDENTIAL]

locksettings set-disabled DISABLED

locksettings get-disabled

flags:

--user USER_ID: specify the user, default value is current user

locksettings set-pattern: sets a pattern

A pattern is specified by a non-separated list of numbers that index the cell

on the pattern in a 1-based manner in left to right and top to bottom order,

i.e. the top-left cell is indexed with 1, whereas the bottom-right cell

is indexed with 9. Example: 1234

locksettings set-pin: sets a PIN

locksettings set-password: sets a password

locksettings clear: clears the unlock credential

locksettings verify: verifies the credential and unlocks the user

locksettings set-disabled: sets whether the lock screen should be disabled

locksettings get-disabled: retrieves whether the lock screen is disabled

命令举例如下：

允许锁屏

locksettings set-disabled DISABLED

默认不锁屏

locksettings set-disabled true

这个命令对应的系统源码在下面这个文件中：

frameworks/base/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java

1	frameworks/base/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java

PinnerService配置

分类：Android, Java 阅读 (3,660) 已关闭评论

3月 192020

PinnerService是用于锁定某些模块在内存中，避免这些模块被移出\移入内存从而提高程序的运行效率

具体可以参考https://source.android.google.cn/devices/tech/debug/jank_jitter这个页面中的相关介绍

PinnerService是在Android7.0中才增加的

在Android8.1系统源码中如何配置PinnerService？

打开文件frameworks/base/core/res/res/values/config.xml，增加如下配置：

    <string-array translatable="false" name="config_defaultPinnerServiceFiles">
		<item>"/system/framework/arm/boot-framework.oat"</item>
		<item>"/system/framework/oat/arm64/services.odex"</item>
		<item>"/system/framework/arm64/boot.oat"</item>
		<item>"/system/framework/arm64/boot-core-libart.oat"</item>	
    </string-array>

<string-array translatable="false" name="config_defaultPinnerServiceFiles">

<item>"/system/framework/arm/boot-framework.oat"</item>

<item>"/system/framework/oat/arm64/services.odex"</item>

<item>"/system/framework/arm64/boot.oat"</item>

<item>"/system/framework/arm64/boot-core-libart.oat"</item>

</string-array>

具体哪些文件需要配置在PinnerService中？

adb shell dumpsys可以dump的服务

分类：Android, Android, Java, Operating System 阅读 (2,372) 已关闭评论

3月 122020

　　adb shell dumpsys显示的结果比较长，有的时候我们只想看某一个服务的dump信息，在后面加上那个服务的名字就可以了。我们执行完adb shell dumpsys后，最顶部显示的是当前运行的服务列表，这个列表就是可以细项输出的每个服务名称的列表。

　　比如：adb shell dumpsys alarm输出的就只有SurfaceFlinger服务的输出信息。

　　对于某些服务，还能指定更小的分类，比如adb shell dumpsys activity还有更细的输出adb shell dumpsys activity broadcasts，这个我们通过adb shell dumpsys activity -h打印帮助信息就能看到子分类的参数说明了。

　　adb shell dumpsys生成的列表

Currently running services:
  DockObserver
  SurfaceFlinger
  accessibility
  activity
  alarm
  android.security.keystore
  android.service.gatekeeper.IGateKeeperService
  appops
  appwidget
  audio
  autofill
  backup
  battery
  batteryproperties
  batterystats
  carrier_config
  clipboard
  commontime_management
  companiondevice
  connectivity
  connmetrics
  content
  contexthub
  country_detector
  cpuinfo
  dbinfo
  device_identifiers
  device_policy
  deviceidle
  devicestoragemonitor
  display
  dreams
  drm.drmManager
  dropbox
  gfxinfo
  gpu
  graphicsstats
  hardware_properties
  input
  input_method
  installd
  iphonesubinfo
  isms
  isub
  jobscheduler
  launcherapps
  location
  lock_settings
  media.audio_flinger
  media.audio_policy
  media.camera
  media.camera.proxy
  media.drm
  media.extractor
  media.metrics
  media.player
  media.resource_manager
  media.sound_trigger_hw
  media_projection
  media_resource_monitor
  media_router
  media_session
  meminfo
  mount
  netd
  netd_listener
  netpolicy
  netstats
  network_management
  network_score
  network_time_update_service
  notification
  otadexopt
  overlay
  package
  package_native
  permission
  phone
  pinner
  power
  processinfo
  procstats
  recovery
  restrictions
  rttmanager
  scheduling_policy
  search
  sec_key_att_app_id_provider
  sensorservice
  serial
  servicediscovery
  settings
  shortcut
  simphonebook
  soundtrigger
  statusbar
  storaged
  storagestats
  telecom
  telephony.registry
  textservices
  thermalservice
  trust
  uimode
  updatelock
  usagestats
  usb
  user
  voiceinteraction
  vrmanager
  wallpaper
  webviewupdate
  wifi
  wificond
  wifiscanner
  window

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Currently running services:

DockObserver

SurfaceFlinger

accessibility

activity

alarm

android.security.keystore

android.service.gatekeeper.IGateKeeperService

appops

appwidget

audio

autofill

backup

battery

batteryproperties

batterystats

carrier_config

clipboard

commontime_management

companiondevice

connectivity

connmetrics

content

contexthub

country_detector

cpuinfo

dbinfo

device_identifiers

device_policy

deviceidle

devicestoragemonitor

display

dreams

drm.drmManager

dropbox

gfxinfo

gpu

graphicsstats

hardware_properties

input

input_method

installd

iphonesubinfo

isms

isub

jobscheduler

launcherapps

location

lock_settings

media.audio_flinger

media.audio_policy

media.camera

media.camera.proxy

media.drm

media.extractor

media.metrics

media.player

media.resource_manager

media.sound_trigger_hw

media_projection

media_resource_monitor

media_router

media_session

meminfo

mount

netd

netd_listener

netpolicy

netstats

network_management

network_score

network_time_update_service

notification

otadexopt

overlay

package

package_native

permission

phone

pinner

power

processinfo

procstats

recovery

restrictions

rttmanager

scheduling_policy

sec_key_att_app_id_provider

sensorservice

serial

servicediscovery

settings

shortcut

simphonebook

soundtrigger

statusbar

storaged

storagestats

telecom

telephony.registry

textservices

thermalservice

trust

uimode

updatelock

usagestats

usb

user

voiceinteraction

vrmanager

wallpaper

webviewupdate

wifi

wificond

wifiscanner

window

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既然Zygote Server是使用网络通讯，为什么普通应用不能和它通讯？

删除framework层不使用语言配置文件

删除设置应用中的不使用的语言选择列表

一、环境准备

二、下载源码

三、安装编译时需要的第三方库

四、开始编译

五、遇到的问题

1. 错误：flex-2.5.39: loadlocale.c:130: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))’ failed. Aborted (core dumped)

2、错误2： JackServer提示out of memory

解决办法：

模块中定义的sepolicy策略文件目录如下加入到系统编译中：

如何定义域？

如何定义某个目录或者应用文件的安全上下文？

根据logcat中的avc denied的log生成合适的seLinux规则。

命令举例如下：

这个命令对应的系统源码在下面这个文件中：

1. 错误：flex-2.5.39: loadlocale.c:130: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))’ failed.
Aborted (core dumped)

2、错误2：
JackServer提示out of memory