i2pd documentation
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Building on Android

There are two versions: with QT and without QT.

Pre-requisites

You need to install Android SDK, NDK and QT with android support.

  • SDK (choose command line tools only, and make sure you installed "Android SDK Build-Tools")
  • NDK
  • QT(for QT only). Choose one for your platform for android. For example QT 5.6 under Linux would be this file

You also need Java JDK (prefer Oracle Java 8), Ant and latest Gradle (min version 3.4).

QT-Creator (for QT only)

Open QT-creator that should be installed with QT. Go to Settings/Android and specify correct paths to SDK and NDK. If everything is correct you will see two set available: Android for armeabi-v7a (gcc, qt) and Android for x86 (gcc, qt).

Dependencies

Take following pre-compiled binaries from PurpleI2P's repositories.

git clone https://github.com/PurpleI2P/Boost-for-Android-Prebuilt.git
git clone https://github.com/PurpleI2P/OpenSSL-for-Android-Prebuilt.git
git clone https://github.com/PurpleI2P/MiniUPnP-for-Android-Prebuilt.git
git clone https://github.com/PurpleI2P/android-ifaddrs.git

Prepare Android SDK and install required packages

mkdir android-sdk
cd android-sdk
wget <link to latest SDK from Android site>
unzip sdk-tools-XXXXXX-XXXXXX.zip
./tools/bin/sdkmanager "build-tools;25.0.3" "platforms;android-14" "platforms;android-25" "platform-tools"

Building the app with QT

  • Open qt/i2pd_qt/i2pd_qt.pro in the QT-creator
  • Change line MAIN_PATH = /path/to/libraries to an actual path where you put the dependencies to
  • Select appropriate project (usually armeabi-v7a) and build
  • You will find an .apk file in android-build/bin folder

Building the app without QT

  • Change line I2PD_LIBS_PATH in android/jni/Application.mk to an actual path where you put the dependencies to
  • Create or edit file 'local.properties'. Place 'sdk.dir=' and 'ndk.dir='
  • Run gradle clean assembleDebug from android folder
  • You will find an .apk file in android/build/outputs/apk folder

Creating release .apk

In order to create release .apk you must obtain a Java keystore file(.jks). Either you have in already, or you can generate it yourself using keytool, or from one of you existing well-know certificates. For example, i2pd release are signed with this certificate.

Change file 'build.gradle':

--- a/android/build.gradle
+++ b/android/build.gradle
@@ -46,11 +46,17 @@ android {
             keyAlias "i2pdapk"
             keyPassword "android"
         }
+        release {
+            storeFile file("path to .jks")
+            storePassword "Store Password"
+            keyAlias "alias"
+            keyPassword "Key Passwordq"
+        }
     }
     buildTypes {
         release {
             minifyEnabled true
-            signingConfig signingConfigs.orignal
+            signingConfig signingConfigs.release

Run gradle clean assembleRelease

Building executable android binary

  • Change line I2PD_LIBS_PATH in android_binary_only/jni/Application.mk to an actual path where you put the dependencies to
  • Run ndk-build -j <threads> from android_binary_only folder
  • You will find an i2pd executable in android_binary_only/libs/armeabi-v7a folder