本文为看雪论坛优秀文章
看雪论坛作者ID:iyue_t
Android Java层源码调试
成功会在源码根目录生成android.iml 和 android.ipr两个文件。
# 在源码根目录执行
source build/envsetup.sh
lunch 22
mmm development/tools/idegen
# or make idegen
sudo development/tools/idegen/idegen.sh
sudo chmod 777 android.iml
sudo chmod 777 android.ipr
sudo deepin-editor android.iml
搜索excludeFolder,在下面加入这些配置。
过滤不需要的源码模块。
<excludeFolder url="file://$MODULE_DIR$/bionic" />
<excludeFolder url="file://$MODULE_DIR$/bootable" />
<excludeFolder url="file://$MODULE_DIR$/build" />
<excludeFolder url="file://$MODULE_DIR$/cts" />
<excludeFolder url="file://$MODULE_DIR$/dalvik" />
<excludeFolder url="file://$MODULE_DIR$/developers" />
<excludeFolder url="file://$MODULE_DIR$/development" />
<excludeFolder url="file://$MODULE_DIR$/device" />
<excludeFolder url="file://$MODULE_DIR$/docs" />
<excludeFolder url="file://$MODULE_DIR$/external" />
<excludeFolder url="file://$MODULE_DIR$/hardware" />
<excludeFolder url="file://$MODULE_DIR$/kernel" />
<excludeFolder url="file://$MODULE_DIR$/out" />
<excludeFolder url="file://$MODULE_DIR$/pdk" />
<excludeFolder url="file://$MODULE_DIR$/platform_testing" />
<excludeFolder url="file://$MODULE_DIR$/prebuilts" />
<excludeFolder url="file://$MODULE_DIR$/sdk" />
<excludeFolder url="file://$MODULE_DIR$/system" />
<excludeFolder url="file://$MODULE_DIR$/test" />
<excludeFolder url="file://$MODULE_DIR$/toolchain" />
<excludeFolder url="file://$MODULE_DIR$/tools" />
<excludeFolder url="file://$MODULE_DIR$/.repo" />
通过AS的Open an existing Android Studio project选项选择源码根目录的android.ipr就可以导入源码。
mark Directory as Excluded
不用管下面的配置选项
/android/android/android-10.0.0_r2/frameworks/base/core/res/AndroidManifest.xml
/android/android/android-10.0.0_r2/frameworks/base/core/res/res
/android/android/android-10.0.0_r2/frameworks/base/core/res/assets
在源码的根目录创建start_emulator.sh脚本,为了方便的启动模拟器,输入以下内容 后执行。
#!/bin/bash
source build/envsetup.sh
lunch 6
emulator
# sudo chmod 777 ./start_emulator.sh
# ./start_emulator.sh
# 第三方app需先以调试模式启动app 点击运行
adb shell am set-debug-app -w com.example.dexlassloaders
# 等待附加调试 会自动继续运行 直到触发断点
# 系统进程可直接进行附加调试
在系统源码找到ActivityStarter这个类,在startActivityMayWait这个方法打断点。
点击菜单的Run–>Attach Debugger to Android Process,勾选Show all processer,选择system_process 随便启动app 触发断点。
# 进入源码目录
cd /android/android/android-10.0.0_r2
# 先初始化环境 主要为lunch 目标
source build/envsetup.sh
lunch 22
# 进入gdbclient.py 脚本目录
cd development/scripts
# 调试模式启动 第三方app 此命令需手动点击
adb shell am set-debug-app -w com.example.dexlassloaders
# 以调试模式启动 无需手动点击
adb shell am start -D -n com.example.dexlassloaders/.MainActivity
# 查看进程pid
adb shell "ps -ef | grep com.example.dexlassloaders"
# u0_a103 6018 1631 0 18:24:11 ? 00:00:00 com.example.dexlassloaders
# root 6046 1677 0 18:25:54 ? 00:00:00 sh -c ps -ef | grep com.example.dexlassloaders
# root 6049 6046 0 18:25:54 ? 00:00:00 grep com.example.dexlassloaders
# 执行此命令等待 输出 vscode launch.json配置 报错 请检查pid
gdbclient.py -p 6018 --setup-forwarding vscode
# 没调试完不要 按enter
# 接着使用as 附加调试 或者
adb forward tcp:12345 jdwp:6018 # (Where XXX is the PID of the debugged process.)
jdb -attach localhost:12345
{
"configurations": [
// {} 复制到这里
{
"miDebuggerPath": "/android/android/android-10.0.0_r2/prebuilts/gdb/linux-x86/bin/gdb",
"program": "/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/system/bin/app_process64",
"setupCommands": [
{
"text": "-enable-pretty-printing",
"description": "Enable pretty-printing for gdb",
"ignoreFailures": true
},
{
"text": "-environment-directory /android/android/android-10.0.0_r2",
"description": "gdb command: dir",
"ignoreFailures": false
},
{
"text": "-gdb-set solib-search-path /android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/system/lib64/:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/system/lib64/hw:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/system/lib64/ssl/engines:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/system/lib64/drm:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/system/lib64/egl:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/system/lib64/soundfx:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/vendor/lib64/:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/vendor/lib64/hw:/android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols/vendor/lib64/egl",
"description": "gdb command: set solib-search-path",
"ignoreFailures": false
},
{
"text": "-gdb-set solib-absolute-prefix /android/android/android-10.0.0_r2/out/target/product/generic_x86_64/symbols",
"description": "gdb command: set solib-absolute-prefix",
"ignoreFailures": false
},
{
"text": "-interpreter-exec console \"source /android/android/android-10.0.0_r2/development/scripts/gdb/dalvik.gdb\"",
"description": "gdb command: source art commands",
"ignoreFailures": false
}
],
"name": "(gdbclient.py) Attach app_process64 (port: 5039)",
"miDebuggerServerAddress": "localhost:5039",
"request": "launch",
"type": "cppdbg",
"cwd": "/android/android/android-10.0.0_r2",
"MIMode": "gdb"
}
]
}
输出符号加载为连接调试gdb成功。
按照java层 调试方法附加调试 触发 第三方app执行。
到断点处自然断下来。
gdbclient.py -p 6018 --setup-forwarding vscode 执行之后 vscode 附加 发现链接失败时
# 调试模式启动 第三方app 此命令需手动点击
adb shell am set-debug-app -w com.example.dexlassloaders
# 以调试模式启动 无需手动点击
adb shell am start -D -n com.example.dexlassloaders/.MainActivity
# 查看进程pid
adb shell "ps -ef | grep com.example.dexlassloaders"
# u0_a103 6018 1631 0 18:24:11 ? 00:00:00 com.example.dexlassloaders
# root 6046 1677 0 18:25:54 ? 00:00:00 sh -c ps -ef | grep com.example.dexlassloaders
# root 6049 6046 0 18:25:54 ? 00:00:00 grep com.example.dexlassloaders
# 1. 进入手机 shell
adb shell
# 2. 切换root模式 普通手机为su
su
# 3. 手动执行gdbserver
gdbserver64 :1234 --attach 6018
# 出现下面的表示 附加调试成功
# Remote debugging from host 127.0.0.1
# 4. 重新启动一个终端
# 4.1 进行端口映射
adb forward tcp:5039 tcp:1234
# 4.2 按照 获取vscodelunch.json 配置 这个做 配置vscode 检查5039端口
# 5. 启动vscode附加调试 - 先下断点
vscode 按 F5 启动调试 查看调试控制台,应该开始Loaded symbols 了
# 6. 使用as 附加调试或者 执行下面的jdb 开始调试
adb forward tcp:12345 jdwp:6018
jdb -attach localhost:12345
• frameworks
• libcore
• 需要其他再添加
lunch真机的时候 gdbclient.py 没有输出 必须模拟器才有 可修改模拟的输出 适配真机vscode lunch 自行尝试 。
看雪ID:iyue_t
https://bbs.kanxue.com/user-home-853140.htm
# 往期推荐
球分享
球点赞
球在看
点击“阅读原文”,了解更多!