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Welcome to EthereumJ for Android

About

EthereumJ is a pure-Java implementation of the Ethereum protocol. For high-level information about Ethereum and its goals, visit ethereum.org. The ethereum white paper provides a complete conceptual overview, and the yellow paper provides a formal definition of the protocol.

This is an Android-optimized fork of EthereumJ.

This repository consists of:

ethereum-core: a android compatible library of ethereumj-core .
[app]: a simple mockup GUI for exploring Ethereum functionality and usage.

Deviations from EthereumJ

Code:

replaced Spring Framework Dependency Injection with Dagger 2 DI;
replaced org.springframework.util.FileSystemUtils with org.apache.commons.io.FileUtils;
replaced some worldManager injections with specific item injections from worldManager which were used;
replaced org.springframework.util.StringUtils.isEmpty with String.isEmpty();
replaced @PostConstruct annotation with explicit method invocation in contructor;
replaced java.nio.file.Files with org.apache.commons.io.FileUtils;
replaced javax.xml.bind.DatatypeConverter.hexStringToByteArray with custom implementation;
commented javax.swing references in Utils.java;

Gradle:

changed from java build to android build;
updated netty-all from 4.0.23 to 4.0.28;
disabled org.antlr:antlr4-runtime:4.5 ( use 4.0 from com.yuvalshavit:antlr-denter:1.1 );
replaced org.slf4j:slf4j-api:1.7.7 with org.slf4j:slf4j-android:1.7.12
removed org.javassist:javassist:3.15.0-GA;
removed log4j:log4j:${log4jVersion};
removed org.hibernate:hibernate-core:${hibernateVersion};
removed org.hibernate:hibernate-entitymanager:${hibernateVersion};
removed commons-dbcp:commons-dbcp:1.4;
removed redis.clients:jedis:2.6.0;
removed org.slf4j:slf4j-log4j12:${slf4jVersion};
removed log4j:apache-log4j-extras:${log4jVersion};

Todo

Android-specific BlockStore Implementation
JSON-RPC Server

This is a work in progress.

Gotchas

Old devices will fail to auth in time and will be rejected by peers, please use modern devices.

Building from source

Clone this repository and run (make sure clean from previous builds) ./gradlew build
Install onto Android Device adb install -r app/build/outputs/apk/app-debug.apk

License

EthereumJ is released under the MIT license.

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