android关于framework层的中间件jar的流程
简述
基于android12的版本进行处理的，要达到的效果是一开机系统就自动加载完成所需要的jar包。
实现过程
1.jar包制作
framework/base下的代码实现如下所示
commit 9f37044be18cda8ec48ac1588c36b11bf2df2c3e (HEAD)
Author: xxxxxx <xxxxxx>
Date: Sat May 18 23:14:27 2024 +0800
test code
Change-Id: I52c69e25f367a1314dcb0fa7fcef5a4c3a740c7b
diff --git a/cmds/custom_fra_jar/Android.bp b/cmds/custom_fra_jar/Android.bp
new file mode 100644
index 000000000000..f5d1a9bc41c6
--- /dev/null
+++ b/cmds/custom_fra_jar/Android.bp
@@ -0,0 +1,7 @@
+java_library{
+ name: "custom_fra_jar",
+ srcs: [
+ "src/**/*.java",
+ ],
+ installable:true,
+}
\ No newline at end of file
diff --git a/cmds/custom_fra_jar/src/com/custom/fra/CustomFraTest.java b/cmds/custom_fra_jar/src/com/custom/fra/CustomFraTest.java
new file mode 100644
index 000000000000..f1e15c1ad763
--- /dev/null
+++ b/cmds/custom_fra_jar/src/com/custom/fra/CustomFraTest.java
@@ -0,0 +1,13 @@
+package com.custom.fra;
+
+import android.util.Log;
+
+public class CustomFraTest {
+ private static final String TAG = "CustomFraTest";
+
+ public static void testFunction() {
+ Log.i(TAG, "testFunction is success");
+ Log.i(TAG, "testFunction is framework own log");
+
+ }
+}
2.PRODUCT_BOOT_JARS处理
在build/make/target/product/default_art_config.mk文件中添加custom_fra_jar配置
diff --git a/target/product/default_art_config.mk b/target/product/default_art_config.mk
index 0fa9058f0b..f4a5f841e3 100644
--- a/target/product/default_art_config.mk
+++ b/target/product/default_art_config.mk
@@ -43,6 +43,7 @@ PRODUCT_BOOT_JARS += \
ext \
telephony-common \
voip-common \
+ custom_fra_jar \
ims-common
# Non-updatable APEX jars. Keep the list sorted.
3.PRODUCT_PACKAGES处理
在device/xxx/car/common/car.mk文件中添加custom_fra_jar配置，此处的配置路径需要随着项目存在一些差异。
diff --git a/common/car.mk b/common/car.mk
index d835123..99b1ed0 100644
--- a/common/car.mk
+++ b/common/car.mk
@@ -18,6 +18,7 @@
PRODUCT_PACKAGES += \
android.hardware.automotive.vehicle@2.0-service \
android.hardware.broadcastradio@2.0-service \
+ custom_fra_jar \
android.hardware.audio.service-caremu
# Emulator configuration
4.白名单配置
在build/soong/scripts/check_boot_jars/package_allowed_list.txt文件中配置白名单
diff --git a/scripts/check_boot_jars/package_allowed_list.txt b/scripts/check_boot_jars/package_allowed_list.txt
index 18ab427b5..247c9ebf3 100644
--- a/scripts/check_boot_jars/package_allowed_list.txt
+++ b/scripts/check_boot_jars/package_allowed_list.txt
@@ -86,6 +86,8 @@ sun\.reflect.*
sun\.nio.*
sun\.net.*
com\.sun\..*
+com\.custom\.fra
+com\.custom\.fra\..*
# TODO: Move these internal org.apache.harmony classes to libcore.*
org\.apache\.harmony\.crypto\.internal
编译整个系统代码，成功后进行烧录
命令验证
当前需要在系统中的以下两处查询到相关信息“custom_fra_jar”
1.进入系统中输入以下命令
xxx/ # /system/etc/permissions # $BOOTCLASSPATH
可以看到输出了很多个jar包，其中可以看到里面有以下的名称
/system/framework/custom_fra_jar.jar
2.查看system/framework下的jar包
xxx:/system/framework # ls -la custom_fra_jar.jar
-rw-r--r-- 1 root root 1217 2024-05-18 22:23 custom_fra_jar.jar
以上表示framework层的中间件jar已经制作完成了。
系统应用验证
路径packages/apps/Car/Launcher
添加如下代码进行验证：
diff --git a/Android.bp b/Android.bp
index 77e8e3d..054c7e9 100644
--- a/Android.bp
+++ b/Android.bp
@@ -35,7 +35,9 @@ android_library {
"WindowManager-Shell",
],
- libs: ["android.car"],
+ libs: [
+ "android.car",
+ "custom_fra_jar",],
manifest: "AndroidManifest.xml",
}
diff --git a/src/com/android/car/carlauncher/CarLauncher.java b/src/com/android/car/carlauncher/CarLauncher.java
index 30c8c21..2bf3f17 100644
--- a/src/com/android/car/carlauncher/CarLauncher.java
+++ b/src/com/android/car/carlauncher/CarLauncher.java
@@ -20,6 +20,7 @@ import static android.app.ActivityTaskManager.INVALID_TASK_ID;
import static android.car.user.CarUserManager.USER_LIFECYCLE_EVENT_TYPE_SWITCHING;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_TRUSTED_OVERLAY;
+import com.custom.fra.CustomFraTest;
import android.app.ActivityManager;
import android.app.ActivityOptions;
import android.app.ActivityTaskManager;
@@ -183,7 +184,9 @@ public class CarLauncher extends FragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
-
+ Log.d(TAG,"start");
+ CustomFraTest.testFunction();
+ Log.d(TAG,"end");
if (CarLauncherUtils.isCustomDisplayPolicyDefined(this)) {
Intent controlBarIntent = new Intent(this, ControlBarActivity.class);
controlBarIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
重新编译系统，烧录最新镜像。
输出如下所示：
05-18 21:59:49.134 1892 1892 D CarLauncher: start
05-18 21:59:49.134 1892 1892 I CustomFraTest: testFunction is success
05-18 21:59:49.134 1892 1892 I CustomFraTest: testFunction is framework own log
05-18 21:59:49.134 1892 1892 D CarLauncher: end
原文地址：https://blog.csdn.net/qq_27840511/article/details/139032826
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