Android11快速编译并替换framework.jar

在Android11之前修改了framework相关代码，只需make framework就可以编译出framework.jar。在Android11，这个编译命令不起作用了，根据framework/base/目录下Android.bp中的提示：

java_library {
    name: "framework-minus-apex",
    defaults: ["framework-defaults"],
    srcs: [":framework-non-updatable-sources"],
    installable: true,
    ......
    // For backwards compatibility.
    stem: "framework",
    apex_available: ["//apex_available:platform"],
    visibility: [
        "//frameworks/base",
        // TODO(b/147128803) remove the below lines
        "//frameworks/base/apex/blobstore/framework",
        "//frameworks/base/apex/jobscheduler/framework",
        "//frameworks/base/packages/Tethering/tests/unit",
    ],
}

// This "framework" module is NOT installed to the device. It's
// "framework-minus-apex" that gets installed to the device. Note that
// the filename is still framework.jar (via the stem property) for
// compatibility reason. The purpose of this module is to provide
// framework APIs (both public and private) for bundled apps.
// "framework-minus-apex" can't be used for the purpose because 1)
// many apps have already hardcoded the name "framework" and
// 2) it lacks API symbols from updatable modules - as it's clear from
// its suffix "-minus-apex".

可以看到framework变为了framework-minus-apex，通过stem属性使编译出来的模块还叫framework.jar，这样修改的目的一个是为了向后兼容以前的jar名称，一个也是为了表示现在framework是减去了apex的模块，所以带个minus-apex的后缀。
那么编译的时候就要换成下面的命令：

make framework-minus-apex

编译出framework.jar后，先用下面的命令remount：

adb root;adb disable-verity;adb reboot;adb wait-for-device;adb root;adb remount

然后把framework.jar push到system/framework/下面，同时还要删除这个目录下面的oat，arm，arm64三个目录(不删除会一直卡在开机动画)，最后再运行下面的命令重启zygote，这样新替换的framework.jar就生效了。

adb shell stop;adb shell start;