一、前言
关于常见的Android开发来说，一般等级的app现已满足不了需求。对体系的要求能力越来越定制化，所以针对体系权限的需求也火烧眉毛。
那怎么经过aosp的体系签名，将一般app晋级为体系权限的app，使app能访问体系资源的权限呢？
二、流程
1. 手动签名apk文件
a. app设置体系权限
在app项目的AndroidManifest文件的节点新增
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:sharedUserId="android.uid.system">
b. 编译打包apk
生成对应apk
c. 准备签名文件及东西
需求准备：
-
java环境指令
-
体系签名文件：platform.pk8、platform.x509.pem
- /build/target/product/security中找到
- android.googlesource.com/platform/bu…
-
signapk.jar：
- 进入/build/tools/signapk/文件夹
- 执行指令: mm
- 在out/host/linux-x86/framework/目录找到signapk.jar
d. 签名打包好的apk
tips: 最好将东西等文件复制到一致文件中，比较好操作，半途会遇到各式各样的问题，操作篇尾
java -jar signapk.jar platform.x509.pem platform.pk8 app-debug.apk new.apk
e. 安装新包测验
卸载旧包，安装新包，即可完成体系权限
2. 自动签名apk文件
每次开发时，总是要手动签名新打出的安装包，很不方便，直接在打包时完成体系签名更高效
a. pk8 私钥解密pem格局
此刻会生成platform.priv.pem文件
- [platform.priv.pem]为生成文件名称
openssl pkcs8 -in platform.pk8 -inform DER --outform PEM -out platform.priv.pem -nocrypt
b. 私钥经过公钥pem加密pk12
此刻会生成platform.pk12文件
- [platform.priv.pem]为上一步生成的文件
- [zxxkey]为AliasName
openssl pkcs12 -export -in platform.x509.pem -inkey platform.priv.pem -out platform.pk12 -name zxxkey
需求输入两次暗码：（实测store和key暗码需求一致）
c. 经过java的keytool 东西生成 keystore
- [12345678]为store暗码
- [zxxkey]为上一步设置的别号，需求与上面保持一致
jks:
keytool -importkeystore -destkeystore platform.jks -srckeystore platform.pk12 -srcstoretype PKCS12 -srcstorepass 12345678 -alias zxxkey
keystore:
keytool -importkeystore -destkeystore platform.keystore -srckeystore platform.pk12 -srcstoretype PKCS12 -srcstorepass 12345678 -alias zxxkey
d. 项目中使用签名
1）引进签名文件:
将keystore或许jks文件引进项目
2）创建keystore.properties:
keyAlias=zxxkey
keyPassword=12345678
storeFile=../key/platform.jks
storePassword=12345678
3）在app/build.gradle.kts引进signConfig:
import java.io.FileInputStream
import java.util.Properties
...
val keystorePropertiesFile = rootProject.file("keystore.properties")
val keystoreProperties = Properties()
keystoreProperties.load(FileInputStream(keystorePropertiesFile))
...
android {
...
signingConfigs {
create("release") {
keyAlias = keystoreProperties.getProperty("keyAlias")
keyPassword = keystoreProperties.getProperty("keyPassword")
storeFile = file(keystoreProperties.getProperty("storeFile"))
storePassword = keystoreProperties.getProperty("storePassword")
}
}
buildTypes {
debug {
signingConfig = signingConfigs.getByName("release")
}
release {
signingConfig = signingConfigs.getByName("release")
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
...
}
三、问题
1. java版别问题
Q：版别异常？
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/signapk/SignApk has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
A：解决方案：
晋级jdk版别，52.0版别为java8，选用更高版别即可。
/home/zengxiangxi/Developer/JDK/jdk-9.0.4/bin/java
/home/zengxiangxi/Developer/JDK/jdk-9.0.4/bin/java -jar signapk.jar platform.x509.pem platform.pk8 app-debug.apk new.apk
2. 签名问题报错
Q：找不到依赖库？
Exception in thread "main" java.lang.UnsatisfiedLinkError: no conscrypt_openjdk_jni-linux-x86_64 in java.library.path
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2541)
at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:873)
at java.base/java.lang.System.loadLibrary(System.java:1857)
at org.conscrypt.NativeLibraryUtil.loadLibrary(NativeLibraryUtil.java:54)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
A：附带以来库路径。
-Djava.library.path=”/home/zengxiangxi/Project/aosp/out/soong/host/linux-x86/lib64″
stackoverflow.com/questions/4…
~/Developer/JDK/jdk-9.0.4/bin/java -Djava.library.path="/home/zengxiangxi/Project/aosp/out/soong/host/linux-x86/lib64" -jar signapk.jar platform.x509.pem platform.pk8 app-debug.apk new.apk
