项目场景：

一般来讲应用包名都是配置在 AndroidManifest.xml 中的，但遇到特殊情况，需要修改源码中应用包名

通常都会先去改 AndroidManifest.xml package 但改为后编译发现一顿错误，原因是 java 类中已经指定了 R 文件包名，

几百个都去替换那岂不是一堆文件需要 add，所以想找找有没有快捷方法，还真被我找到了。

解决方案：

通过配置 LOCAL_AAPT_FLAGS := rename-manifest-package "com.android.camera" 就可以

毕竟在 AS 中通过 gradle 配置 applicationId 就可以修改包名，想来 mk 中也是有的，不常用而已。

一开始发现 mk 中可以修改应用的版本号，那么猜测是不是也可以修改包名。

LOCAL_AAPT_FLAGS := --version-name "$(version_name_package)" LOCAL_AAPT_FLAGS := --version-code "$(version_code_package)"

通过以上配置可以修改应用版本号，我就顺手配了个 LOCAL_AAPT_FLAGS := --package "com.android.camera"

编译小试一下，报错提示如下

aapt2 link [options] -o arg --manifest arg files... Options: -o arg Output path. --manifest arg Path to the Android manifest to build. -I arg Adds an Android APK to link against. -A arg An assets directory to include in the APK. These are unprocessed. -R arg Compilation unit to link, using overlay semantics. The last conflicting resource given takes precedence. --package-id arg Specify the package ID to use for this app. Must be greater or equal to 0x7f and can't be used with --static-lib or --shared-lib. --java arg Directory in which to generate R.java. --proguard arg Output file for generated Proguard rules. --proguard-main-dex arg Output file for generated Proguard rules for the main dex. --proguard-conditional-keep-rules Generate conditional Proguard keep rules. --proguard-minimal-keep-rules Generate a minimal set of Proguard keep rules. --no-auto-version Disables automatic style and layout SDK versioning. --no-version-vectors Disables automatic versioning of vector drawables. Use this only when building with vector drawable support library. --no-version-transitions Disables automatic versioning of transition resources. Use this only when building with transition support library. --no-resource-deduping Disables automatic deduping of resources with identical values across compatible configurations. --no-resource-removal Disables automatic removal of resources without defaults. Use this only when building runtime resource overlay packages. --enable-sparse-encoding This decreases APK size at the cost of resource retrieval performance. -x Legacy flag that specifies to use the package identifier 0x01. -z Require localization of strings marked 'suggested'. -c arg Comma separated list of configurations to include. The default is all configurations. --preferred-density arg Selects the closest matching density and strips out all others. --product arg Comma separated list of product names to keep --output-to-dir Outputs the APK contents to a directory specified by -o. --no-xml-namespaces Removes XML namespace prefix and URI information from AndroidManifest.xml and XML binaries in res/*. --min-sdk-version arg Default minimum SDK version to use for AndroidManifest.xml. --target-sdk-version arg Default target SDK version to use for AndroidManifest.xml. --version-code arg Version code (integer) to inject into the AndroidManifest.xml if none is present. --version-code-major arg Version code major (integer) to inject into the AndroidManifest.xml if none is present. --version-name arg Version name to inject into the AndroidManifest.xml if none is present. --revision-code arg Revision code (integer) to inject into the AndroidManifest.xml if none is present. --replace-version If --version-code, --version-name, and/or --revision-code are specified, these values will replace any value already in the manifest. By default, nothing is changed if the manifest already defines these attributes. --compile-sdk-version-code arg Version code (integer) to inject into the AndroidManifest.xml if none is present. --compile-sdk-version-name arg Version name to inject into the AndroidManifest.xml if none is present. --shared-lib Generates a shared Android runtime library. --static-lib Generate a static Android library. --proto-format Generates compiled resources in Protobuf format. Suitable as input to the bundle tool for generating an App Bundle. --no-static-lib-packages Merge all library resources under the app's package. --non-final-ids Generates R.java without the final modifier. This is implied when --static-lib is specified. --no-proguard-location-reference Keep proguard rules files from having a reference to the source file --stable-ids arg File containing a list of name to ID mapping. --emit-ids arg Emit a file at the given path with a list of name to ID mappings, suitable for use with --stable-ids. --private-symbols arg Package name to use when generating R.java for private symbols. If not specified, public and private symbols will use the application's package name. --custom-package arg Custom Java package under which to generate R.java. --extra-packages arg Generate the same R.java but with different package names. --add-javadoc-annotation arg Adds a JavaDoc annotation to all generated Java classes. --output-text-symbols arg Generates a text file containing the resource symbols of the R class in the specified folder. --allow-reserved-package-id Allows the use of a reserved package ID. This should on be used for packages with a pre-O min-sdk

--auto-add-overlay Allows the addition of new resources in overlays without tags. --override-styles-instead-of-overlaying Causes styles defined in -R resources to replace previous definitions instead of merging into them

--rename-manifest-package arg Renames the package in AndroidManifest.xml. --rename-resources-package arg Renames the package in resources table --rename-instrumentation-target-package arg Changes the name of the target package for instrumentation. Most useful when used in conjunction with --rename-manifest-package. --rename-overlay-target-package arg Changes the name of the target package for overlay. Most useful when used in conjunction with --rename-manifest-package. -0 arg File suffix not to compress. --no-compress Do not compress any resources. --keep-raw-values Preserve raw attribute values in xml files. --no-compress-regex arg Do not compress extensions matching the regular expression. Remember to use the '$' symbol for end of line. Uses a case-sensitive ECMAScriptregular expression grammar. --warn-manifest-validation Treat manifest validation errors as warnings. --split arg Split resources matching a set of configs out to a Split APK. Syntax: path/to/output.apk:[,[...]]. On Windows, use a semicolon ';' separator instead. --exclude-configs arg Excludes values of resources whose configs contain the specified qualifiers. --debug-mode Inserts android:debuggable="true" in to the application node of the manifest, making the application debuggable even on production devices. --strict-visibility Do not allow overlays with different visibility levels. --exclude-sources Do not serialize source file information when generating resources in Protobuf format. --trace-folder arg Generate systrace json trace fragment to specified folder. --merge-only Only merge the resources, without verifying resource references. This flag should only be used together with the --static-lib flag. -v Enables verbose logging. -h Displays this help menu

可以看到完整的使用提示 ，在其中就可以找到 --rename-manifest-package arg Renames the package in AndroidManifest.xml.

参考文章

Android应用编译时自动生成版本号