Download size in KB
ApkSize |
dex |
resources.arsc |
res |
|
empty app |
64.3 |
0.35 |
0.53 |
62.3 |
import AppCompat |
435.7 |
167.8 |
49.7 |
222.8 |
dummy_layout |
228.3 |
0.65 |
48.9 |
198.6 |
aapt - remove res |
113.4 |
0.65 |
48.9 |
63 |
import lottie |
200.8 |
84.1 |
49.1 |
63.2 |
resguard |
196.5 |
84.1 |
40.9 |
63.2 |
resguard[mod] |
189.7 |
84.1 |
37.3 |
63.2 |
remove string |
173.2 |
84.1 |
18.4 |
63.2 |
Remove AppCompat Styles |
149.2 |
73.5 |
5.7 |
62.4 |
Remove XML entity |
144.9 |
72.5 |
2.2 |
62.4 |
proguardFiles
- proguard-android-optimize.txt
- appt-rules.txt
aapt_rules.txt
mapping.txt
mapping.txt
aapt_rules.txt
mapping.txt
http://www.jianshu.com/p/60ce4bf20f72
http://blog.csdn.net/luoshengyang/article/details/8744683
com.tencent.mm.androlib.ApkDecoder#decode
gradle tasks
Gradle Tasks |
Comments |
:app:generateReleaseResValues :app:mergeReleaseResources :app:processReleaseManifest |
|
doFirst replace files (layout/ …) modify values.xml to remove styles |
|
:app:processReleaseResources |
intermediates: (most of intermediates files are created at this point) output: aapt_rules.txt resources-release.ap_ |
doLast remove PNGs from resources-release.ap_ |
|
:app:transformClassesWithDexForRelease |
|
:app:transformClassesWithShrinkResForRelease |
|
:app:packageRelease |
|
:app:assembleRelease |
output: app-release.apk |
:app:resguardRelease |
output: AndResGuard_app-release/app-release_signed_aligned.apk rename res/* remove entity R.drawable.XXX |
Findings
styles -- ref --> layout -- affect --> proguard (aapt_rules.txt)
--> drawable -- affect --> shrink resource
AppCompat
values.xml
|
NOT WORKING (in this case)
https://developer.android.com/studio/build/shrink-code.html#keep-resources res/raw/keep.xml <?xml version="1.0" encoding="utf-8"?> <resources xmlns:tools="http://schemas.android.com/tools" tools:keep="@layout/l_used*_c,@layout/l_used_a,@layout/l_used_b*" tools:discard="@layout/unused2" /> |
Remove files directly will cause runtime exceptions
aapt commands
Starting process 'command '/home/wychi/Android/Sdk/build-tools/25.0.2/aapt''. Working directory: /home/wychi/repository/AppCompatMin/app Command: /home/wychi/Android/Sdk/build-tools/25.0.2/aapt package -f --no-crunch -I /home/wychi/Android/Sdk/platforms/android-25/android.jar -M /home/wychi/repository/AppCompatMin/app/build/intermediates/manifests/full/release/AndroidManifest.xml -S /home/wychi/repository/AppCompatMin/app/build/intermediates/res/merged/release -m -J /home/wychi/repository/AppCompatMin/app/build/generated/source/r/release -F /home/wychi/repository/AppCompatMin/app/build/intermediates/res/resources-release.ap_ -G /home/wychi/repository/AppCompatMin/app/build/intermediates/proguard-rules/release/aapt_rules.txt --custom-package cms.appcompatmin -0 apk --output-text-symbols /home/wychi/repository/AppCompatMin/app/build/intermediates/symbols/release --no-version-vectors Successfully started process 'command '/home/wychi/Android/Sdk/build-tools/25.0.2/aapt'' |
ref
Android gradle plugin
http://google.github.io/android-gradle-dsl/javadoc/
https://github.com/google/android-gradle-dsl
git clone https://android.googlesource.com/platform/tools/build
Proguard
https://www.guardsquare.com/en/proguard/manual/usage#keepoptionmodifiers
If you specify a class, without class members, ProGuard only preserves the class and its parameterless constructor as entry points. It may still remove, optimize, or obfuscate its other class members. If you specify a method, ProGuard only preserves the method as an entry point. Its code may still be optimized and adapted. |
/home/wychi/repository/cmsecurity/build/intermediates/proguard-files/proguard-android-optimize.txt-2.3.0 # Keep setters in Views so that animations can still work. -keepclassmembers public class !android.support.v7.** extends android.view.View { void set*(***); *** get*(); } |