使用AS打开Android源码

1.  source build/envsetup.sh

2.  lunch

3.  整编源码使用m ，如果编过了就不需要执行

4.  mmm development/tools/idegen/

5.  ./development/tools/idegen/idegen.sh

6.vi  development/tools/idegen/excluded-paths  不需要的，不想在AS中加载的目录在这里定义如   ^out    代表不加载out目录

7.不想在AS加载的也可以直接修改android.iml，不需要的直接删除，文件中isTestSource="false" 代表会加载这个文件，为true不加载

修改android.iml文件可以使加载时间变短

https://www.jianshu.com/p/2ba5d6bd461e

vi  development/tools/idegen/excluded-paths文件中加入以下代码，以屏蔽目录

# remove projects except framework

^out

^disregard

^kernel

^bootstrap.bash -> build/soong/bootstrap.bash

^Android.bp -> build/soong/root.bp

^build

#^vendor

^tools

^toolchain

^test

^system

^shortcut-fe

^sdk

^prebuilts

^platform_testing

^pdk

#^packages

^oem-release

^libnativehelper

^libcore

^libcore/.*/test$

^libcore/.*/test-rules$

^libcore/test-rules$

^libcore/metrictests$

^hardware

#^frameworks

^frameworks/support/samples$

^frameworks/.*/.*tests$

^frameworks/.*/test$

^frameworks/.*/test-base$

^frameworks/.*/core-testing$

^frameworks/.*/testing$

^frameworks/.*/testutils$

^frameworks/.*/loadtest$

^frameworks/.*/testtensorflow$

^frameworks/.*/testrunner-src$

^frameworks/.*/androidTest$

^flashing-files

^external

^device

^build.sh

^development

^developers

^dalvik

^cts

^compatibility

^Makefile

^bootable

^bionic

^art

vi android.iml文件中加入以下代码，以屏蔽不需要加载的目录

      <excludeFolder url="file://$MODULE_DIR$/abi" />

      <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://$MODULE_DIR$/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://$MODULE_DIR$/libcore" />

      <excludeFolder url="file://$MODULE_DIR$/libnativehelper" />

      <excludeFolder url="file://$MODULE_DIR$/ndk" />

      <excludeFolder url="file://$MODULE_DIR$/pdk" />

      <excludeFolder url="file://$MODULE_DIR$/prebuilts" />

      <excludeFolder url="file://$MODULE_DIR$/sdk" />

      <excludeFolder url="file://$MODULE_DIR$/system" />

      <excludeFolder url="file://$MODULE_DIR$/tools" />

      <excludeFolder url="file://$MODULE_DIR$/kernel" />

      <excludeFolder url="file://$MODULE_DIR$/test" />

      <excludeFolder url="file://$MODULE_DIR$/toolchain" />

      <excludeFolder url="file://$MODULE_DIR$/platform_testing" />

      <excludeFolder url="file://$MODULE_DIR$/ota" />

      <excludeFolder url="file://$MODULE_DIR$/longan" />

      <excludeFolder url="file://$MODULE_DIR$/compatibility" />

      <excludeFolder url="file://$MODULE_DIR$/packages" />

      <excludeFolder url="file://$MODULE_DIR$/out" />

      <excludeFolder url="file://$MODULE_DIR$/out/soong/.intermediates/prebuilts/sdk/current/androidx/androidx.vectordrawable_vectordrawable/android_common_com.android.mediaprovider/gen/aapt2/R" />

      <excludeFolder url="file://$MODULE_DIR$/out/soong/.intermediates/prebuilts/sdk/current/androidx/androidx.fragment_fragment/android_common/gen/aapt2/R" />

      <excludeFolder url="file://$MODULE_DIR$/out/soong/.intermediates/prebuilts/sdk/current/androidx/androidx.leanback_leanback-preference/android_common/gen/aapt2/R" />

      <excludeFolder url="file://$MODULE_DIR$/out/soong/.intermediates/packages/inputmethods/LatinIME/java/LatinIME/android_common/gen/aapt2/R" />

8.使用AS打开生成的ipr文件

9.等待加载完成过程比较久（1个小时左右看网速）

10.配置AS环境---》文件-->项目结构-》

（API和jdk都删除所有）