使用 Android Studio 開啟 AOSP

1. 編譯 idegen.jar

make idegen
或
mmm development/tools/idegen/

2. 產生 android.iml 和 android.ipr

development/tools/idegen/idegen.sh

3. 在 android.iml 加入以下內容，避免載入不必要的模組（這邊只保留 frameworks 和 packages）

<excludeFolder url="file://$MODULE_DIR$/.repo" />
<excludeFolder url="file://$MODULE_DIR$/art" />
<excludeFolder url="file://$MODULE_DIR$/bionic" />
<excludeFolder url="file://$MODULE_DIR$/bootable" />
<excludeFolder url="file://$MODULE_DIR$/build" />
<excludeFolder url="file://$MODULE_DIR$/compatibility" />
<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://$MODULE_DIR$/external/bluetooth" />
<excludeFolder url="file://$MODULE_DIR$/external/chromium" />
<excludeFolder url="file://$MODULE_DIR$/external/emma" />
<excludeFolder url="file://$MODULE_DIR$/external/icu4c" />
<excludeFolder url="file://$MODULE_DIR$/external/jdiff" />
<excludeFolder url="file://$MODULE_DIR$/external/webkit" />
<excludeFolder url="file://$MODULE_DIR$/frameworks/base/docs" />
<excludeFolder url="file://$MODULE_DIR$/hardware" />
<excludeFolder url="file://$MODULE_DIR$/kernel" />
<excludeFolder url="file://$MODULE_DIR$/libcore" />
<excludeFolder url="file://$MODULE_DIR$/libnativehelper" />
<excludeFolder url="file://$MODULE_DIR$/mfg" />
<excludeFolder url="file://$MODULE_DIR$/out" />
<excludeFolder url="file://$MODULE_DIR$/out/eclipse" />
<excludeFolder url="file://$MODULE_DIR$/out/host" />
<excludeFolder url="file://$MODULE_DIR$/out/target/common/docs" />
<excludeFolder url="file://$MODULE_DIR$/out/target/common/obj/JAVA_LIBRARIES/android_stubs_current_intermediates" />
<excludeFolder url="file://$MODULE_DIR$/out/target/product" />
<excludeFolder url="file://$MODULE_DIR$/pdk" />
<excludeFolder url="file://$MODULE_DIR$/platform_testing" />
<excludeFolder url="file://$MODULE_DIR$/prebuilt" />
<excludeFolder url="file://$MODULE_DIR$/prebuilts" />
<excludeFolder url="file://$MODULE_DIR$/sdk" />
<excludeFolder url="file://$MODULE_DIR$/shortcut-fe" />
<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://$MODULE_DIR$/vendor" />

4. 啟動 Android Studio，選擇 "Open an existing Android Studio project"，選擇剛才產生的 android.ipr。

Done!

[問題]原始碼中的物件參考連結到本機 SDK，而不是直接連結到原始碼

上方工具列 File --> Project Structure
左邊 ProjectSettings/Project --> Project SDK 選擇跟原始碼同版本之 SDK
左邊 ProjectSettings/Modules --> Dependencies 分頁 --> 右邊 "+" 號選擇 "JARs or directories" --> 選擇此專案原始碼之 frameworks、external 資料夾
將 frameworks、external 從 Dependencies 列表中移動到最上面
下方 Apply --> OK