Shrinker
Shrinker will remove all R.class and R$**.class and all constant integer fields will be inlined by asm and transform-api.
I have post more details on my own blog (in Chinese), click here to check it out.
Usage
shrinker from jitpack
To apply shrinker to your android application:
Step1. Add it in your buildscript section of app's build.gradle
buildscript {
repositories {
//...
maven { url 'https://jitpack.io' }
}
dependencies {
classpath 'net.yrom:shrinker:0.2.9'
}
}
Step2. Apply it after the Android plugin
apply plugin: 'com.android.application'
//...
apply plugin: 'net.yrom.shrinker'
NOTE that shrinker plugin requires android gradle build tools version at least 3.0.0 and it will be disabled if run in debug build.
Show case
There is a small test application which depends on so many support libraries, would show how many fields shrinked.
Run with shrinker:
./gradlew :test:assembleRelease -PENABLE_SHRINKER
Run with removeUnusedCode:
android {
buildTypes {
release {
...
postprocessing {
removeUnusedCode = true
}
}
}
...
}Content below counts by dexcount-gradle-plugin
| options | methods | fields | classes |
|---|---|---|---|
| origin | 22164 | 14367 | 2563 |
| shrinker | 21979 | 7805 | 2392 |
| removeUnusedCode | 11338 | 6655 | 1296 |
| shrinker & removeUnusedCode | 11335 | 3302 | 1274 |
License
Copyright 2017 Yrom
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.