Reduce size to 1497 bytes

Use smallest possible manifest, use DSA keystore with keysize=512
fractalwrench · Oct 10, 2017 · ff11ab2 · ff11ab2
1 parent 1094f90
commit ff11ab2
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Showing 7 changed files with 31 additions and 1 deletion.
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+/build/
diff --git a/README.md b/README.md
@@ -1,5 +1,5 @@
 # ApkGolf
-This repository hosts the smallest Android APK in the world. The current size of the APK is *1757 bytes*.
+This repository hosts the smallest Android APK in the world. The current size of the APK is *1497 bytes*.
 
 To learn more about how this was achieved, please read the [blog post](https://fractalwrench.co.uk/posts/playing-apk-golf-how-low-can-an-android-app-go/).
 

diff --git a/app/AndroidManifest.xml b/app/AndroidManifest.xml
diff --git a/app/classes.dex b/app/classes.dex
diff --git a/app/keystore.jks b/app/keystore.jks
diff --git a/build.sh b/build.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+rm -rf build
+mkdir -p build/apk
+
+set -x
+
+#TODO ensure that ANDROID_HOME is set
+
+echo "Creating base AndroidManifest.xml"
+$ANDROID_HOME/build-tools/26.0.2/aapt p -M app/AndroidManifest.xml -I $ANDROID_HOME/platforms/android-26/android.jar -f -F build/base.apk
+unzip build/base.apk -d build/apk
+
+echo "Creating empty classes.dex"
+touch build/apk/classes.dex
+
+echo "Creating unsigned archive"
+zip -j -r build/app-unsigned.apk build/apk
+
+KEYSTORE_PASS=android $ANDROID_HOME/build-tools/26.0.2/apksigner sign --v1-signing-enabled false --ks app/keystore.jks --out build/signed-release.apk --ks-pass env:KEYSTORE_PASS --ks-key-alias android build/app-unsigned.apk
+
+set +x
+
+echo
+echo
+echo
+echo "#######################################"
+echo "RESULTING APK SIZE: $(stat -f '%z' build/signed-release.apk)"
+
diff --git a/signed-release.apk b/signed-release.apk