1、準(zhǔn)備好一份已經(jīng)編譯過的android源碼

2、在linux下生成android.ipr等

執(zhí)行下面的命令即可生成android.ipr等文件：

cd ～/aosp //具體的源碼根目錄
source build/envsetup.sh //用于初始化環(huán)境變量
mmm development/tools/idegen/  //生成文件out/host/linux-x86/framework/idegen.jar
./development/tools/idegen/idegen.sh//源碼根目錄生成文件android.ipr(工程相關(guān)設(shè)置), android.iml(模塊相關(guān)配置)

3、windows下使用android_studio直接打開android源碼目錄

為了提高打開速度

接下來，使用文本編輯器打開"android.iml"文件，并執(zhí)行以下修改
1、搜索關(guān)鍵字"orderEntry"，我一般會(huì)將所有帶有這個(gè)關(guān)鍵字的標(biāo)簽項(xiàng)全部刪除，僅保留以下兩行，大概如下

    <orderEntry type="sourceFolder" forTests="false" />
    <orderEntry type="inheritedJdk" />

2、搜索關(guān)鍵字"out",將sourceFolder標(biāo)簽中帶有out目錄的全部刪除。
3、搜索”excludeFolder“關(guān)鍵字，對(duì)這里進(jìn)行一些修改，將我們不需要看的代碼Exclude掉。通過這個(gè)步驟，能極大地提升第一次加載項(xiàng)目的速度。
對(duì)于exclude的部分，我們可以在項(xiàng)目加載完以后再進(jìn)行調(diào)整就行了。

      <excludeFolder url="file://$MODULE_DIR$/.repo" />
      <excludeFolder url="file://$MODULE_DIR$/ImeCustom" />
      <excludeFolder url="file://$MODULE_DIR$/art" />
      <excludeFolder url="file://$MODULE_DIR$/audio_param_p61" />
      <excludeFolder url="file://$MODULE_DIR$/bionic" />
      <excludeFolder url="file://$MODULE_DIR$/bootable" />
      <excludeFolder url="file://$MODULE_DIR$/build" />
      <excludeFolder url="file://$MODULE_DIR$/ccu_tool" />
      <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://$MODULE_DIR$/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://$MODULE_DIR$/kernel-3.18" />
      <excludeFolder url="file://$MODULE_DIR$/kernel-4.4" />
      <excludeFolder url="file://$MODULE_DIR$/kernel-4.9" />
      <excludeFolder url="file://$MODULE_DIR$/libcore" />
      <excludeFolder url="file://$MODULE_DIR$/libnativehelper" />
      <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://$MODULE_DIR$/packages" />
      <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://$MODULE_DIR$/system" />
      <excludeFolder url="file://$MODULE_DIR$/test" />
      <excludeFolder url="file://$MODULE_DIR$/toolchain" />
      <excludeFolder url="file://$MODULE_DIR$/tools" />
      <excludeFolder url="file://$MODULE_DIR$/trusty" />
      <excludeFolder url="file://$MODULE_DIR$/vendor" />

4、還可以對(duì)Android Studio\bin\studio64.exe.vmoptions進(jìn)行修改，將
-Xms256m
-Xmx1280m
修改為
-Xms784m
-Xmx2560m