[Dev] feathercoin-wallet - Version 5 Development - Mobile / Android wallet

wrapper

Including / pulling changes from Bitcoin Wallet or Forking Latest?

https://github.com/bitcoin-wallet/bitcoin-wallet

Experimental Fork of Bitcoin Wallet.
https://github.com/wrapperband/feathercoin-wallet

For Comparison Litecoin-wallet:
https://github.com/Litecoin-Java/bitcoin-wallet

Commits to Transfer from Old (Version 2) Wallet to “Version 3”

Feathercoin commits to “feathercoin-wallet-2”
https://github.com/wrapperband/feathercoin-wallet-2/commits/master

Wellenreiter

At least it is already on Gradle, and if the code is working, it is a new starting point.

wrapper

Error when Loading “Old” feathercoin-wallet into android-studio

Notes: Message
Load error: undefined path variables

PATH_TO_neoscrypt is undefined. Fix it
Path variables are used to substitute absolute paths in Studio project files and allow project file sharing in version control systems. Some of the files describing the current project settings contain unknown path variables and Studio cannot restore those paths.

wrapper

What is armeabi?

/feathercoin-wallet-2/wallet/armeabi

http://stackoverflow.com/questions/23042175/what-is-armeabi-and-why-they-use-it

armeabi
Android devices have CPUs. Many of those CPUs are based on the ARM architecture, while some are based on x86, and a few others are based on other stuff like MIPS.

Some Android apps use the Native Development Kit (NDK) to create C/C++ code to link into their app. C/C++ code needs to be compiled for a specific CPU architecture. The NDK places the version of the C/C++ code compiled for each architecture into an architecture-specific directory. One of those directories is armeabi/, which is for a generic ARM CPU. There is also armeabi-v7/ (for an ARM v7-compatible CPU), x86/ (for x86 CPUs), etc.

wrapper

This fork is up to v4.0 ercoin (for comparison. check commits)
https://github.com/madzebra/erc-wallet-android/blob/master/wallet/CHANGES

faircoin at 4.0
https://github.com/FairCoinTeam/faircoin-wallet/blob/prod/wallet/CHANGES

multicoin wallet takes ftc :
https://toughnickel.com/personal-finance/The-Best-Multi-Currency-Digital-Wallets-for-Bitcoin-and-other-Digital-Currencies

Dogecoin Version https://github.com/langerhans/dogecoin-wallet-new

wrapper

Feathercoin-wallet(v5) - Gradle issues / notes

There are issues with Gradle, with feathercoin-wallet-2 and with feathercoin-wallet(v5) in android-studio.

It was noted Litecoin retained the Bitcoin-wallet structure, was this to reduce work customising build scripts?

What is Gradle?

Gradle is a build system for Android-studio.

Before Android Studio a program such as Eclipse were used,for your development purposes, andto build your Android APK .

It is possible to build on the command line, but you have to learn what each tool (dx, aapt) does in the SDK. Eclipse saved us all from these low level but important, fundamental details by giving us their own build system.

Using a script to automate build tasks

Why is the res folder is in the same directory as your src folder?

The build system automatically takes all the source files (.java or .xml), then applies the appropriate tool (e.g. takes java class files and converts them to dex files), and groups all of them into one compressed file, the APK file.

The build system uses some conventions: an example of one is to specify the directory containing the source files (in Eclipse it is \src folder) or resources files (in Eclipse it is \res folder) .

In order to automate all these build tasks, there has to be a script;

Shell scripting in linux or batch files syntax in windows can be used you can write your own build system.

Gradle is a build system that takes the best features from other build systems and combines them into one. It is a JVM based build system, which means that you can write your own script in Java, which Android Studio makes use of.

One cool thing about Gradle is that it is a plugin based system. This means if you have your own programming language and you want to automate the task of building some package (output like a JAR for Java) from sources then you can write a complete plugin in Java or Groovy, and distribute it to rest of world.

Why did Google use Gradle?

Google saw one of the most advanced build systems on the market and realized that you could write scripts of your own with little to no learning curve, and without learning Groovy or any other new language. So they wrote the Android plugin for Gradle.

You must have seen build.gradle file(s) in your project. That is where you can write scripts to automate your tasks. The code you saw in these files is Groovy code. If you write System.out.println(“Hello Gradle!”); then it will print on your console.

What can you do in a Gradle build script?

A simple example is that you have to copy some files from one directory to another before the actual build process happens. A Gradle build script can do this.

Ref: http://stackoverflow.com/questions/16754643/what-is-gradle-in-android-studio

wrapper

What is the Gradle build system and how to use it in android studio?

.

Exploring the Gradle Files

Whenever you create a project in Android Studio, the build system automatically generates all the necessary Gradle build files.

Gradle Build Files

Gradle build files use a Domain Specific Language or DSL to define custom build logic and to interact with the Android-specific elements of the Android plugin for Gradle.

Android Studio projects consist of one or more modules, which are components that you can build, test, and debug independently. Each module has its own build file, so every Android Studio project contains two kinds of Gradle build files:

Top-Level Build File:

This is where you’ll find the configuration options that are common to all the modules that make up your project.

Every Android Studio project contains a single, top-level Gradle build file. This build.gradle file is the first item that appears in the Gradle Scripts folder and is clearly marked Project.

Most of the time, you won’t need to make any changes to this file, but it’s still useful to understand its contents and the role it plays within your project.

Module-Level Build File:

Each module has its own Gradle build file that contains module-specific build settings. You’ll spend most of your time editing module-level build file(s) rather than your project’s top-level build file.

In addition to the project-level Gradle build file, each module has a Gradle build file of its own. Below is an annotated version of a basic, module-level Gradle build file.

View Gradle config files

To take a look at these build.gradle files, open Android Studio’s Project panel (by selecting the Project tab) and expand the Gradle Scripts folder. The first two items in the Gradle Scripts folder are the project-level and module-level Gradle build files

Other Gradle Files

In addition to the build.gradle files, your Gradle Scripts folder contains some other Gradle files. Most of the time you won’t have to manually edit these files as they’ll update automatically when you make any relevant changes to your project. However, it’s a good idea to understand the role these files play within your project.

gradle-wrapper.properties (Gradle Version)

This file allows other people to build your code, even if they don’t have Gradle installed on their machine. This file checks whether the correct version of Gradle is installed and downloads the necessary version if necessary.

settings.gradle

This file references all the modules that make up your project.

gradle.properties (Project Properties)

This file contains configuration information for your entire project. It’s empty by default, but you can apply a wide range of properties to your project by adding them to this file.

local.properties (SDK Location)

This file tells the Android Gradle plugin where it can find the Android SDK installation.

**Note:

local.properties (SDK Location) contains information that’s specific to the local installation of the Android SDK. This means that you shouldn’t keep this file under source control.**

Refs:
http://code.tutsplus.com/tutorials/the-ins-and-outs-of-gradle--cms-22978
http://stackoverflow.com/questions/16754643/what-is-gradle-in-android-studio

wrapper

Feathercoin-wallet Bitcoin Fork build Test / Bitcoin comparison / notes

Initial build test failed :

Desktop:~/feathercoin-wallet

$ gradle clean :native-scrypt:copy test build

To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/2.13/userguide/gradle_daemon.html.
Then :
FAILURE: Build failed with an exception.

Where:
Build file ‘/home/wrapper/feathercoin-wallet/native-scrypt/build.gradle’ line: 1
What went wrong:
A problem occurred evaluating project ‘:native-scrypt’.

Failed to apply plugin [class ‘com.android.build.gradle.model.NdkComponentModelPlugin’]
Could not create plugin of type ‘NdkComponentModelPlugin’.

Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED

Bitcoin-wallet test build

FAILURE: Build failed with an exception.

Where:
Build file ‘/home/wrapper/bitcoin-wallet/native-scrypt/build.gradle’ line: 1
What went wrong:
A problem occurred evaluating project ‘:native-scrypt’.

Failed to apply plugin [class ‘com.android.build.gradle.model.AndroidComponentModelPlugin’]
Gradle version 2.10 is required. Current version is 2.13.
If using the gradle wrapper, try editing the distributionUrl in /home/wrapper/.gradle/daemon/2.13/gradle/wrapper/gradle-wrapper.properties to gradle-2.10-all.zip

BUILD FAILED

wrapper

@kris_davison Re: java NeoscryptWrapper
https://github.com/kris-davison/neoscrypt-jni-standalone

I’m trying to compile / understand/ update the mobile wallet. I understand we may need to compile NeoscryptWrapper.

~/neoscrypt-jni-standalone$ printenv JAVA_HOME
/usr/lib/jvm/java-8-oracle

:~/neoscrypt-jni-standalone$ ./build.sh
Hello World :) !!!
input-[B@15db9742
Called Neoscrypt function …
input-[B@15db9742
output-[B@6d06d69c
*** Error in `java’: free(): invalid next size (fast): 0x00007f02440e6280 ***

If I run NeoscryptWrapper on it’s own :
~/neoscrypt-jni-standalone$ java NeoscryptWrapper

Exception in thread “main” java.lang.UnsatisfiedLinkError: no neoscryptwrapper in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at NeoscryptWrapper.<clinit>(NeoscryptWrapper.java:5)

wrapper

Building the “old” android mobile feathercoin-wallet-2

feathercoinj - build staus : SUCCESSFULLY built
I got further last night - using the maven build or Ubuntu 16.10, I was able to compile feathercoinj – SNAPSHOT/feathercoinj-tools-0.97-SNAPSHOT.pom

feathercoin-wallet-2 - build status : FAILED
feathercoin-wallet-2 build crashed looking for The POM for com.google:feathercoinj:jar:0.98-SNAPSHOT is missing

Build status :
Awaiting advice on the Feathercoin jar version mismatch / further research on POM adjustments or other way forward, push fix.

Feathercoin-wallet-2 - How to build

For comparison / research to fork the latest mobile wallet, these are the “old” maven instructions to build the android wallet. The new wallet will use the “gradle” build system.

Build feathercoinj

Open a Terminal
sudo apt install maven
git clone https://github.com/wellenreiter01/feathercoinj
cd feathercoinj
git checkout v0.99
cd wallet
mvn clean install -DskipTests

Build feathercoin-wallet-2

Open a Terminal
git clone https://github.com/wellenreiter01/feathercoin-wallet-2
cd feathercoin-wallet-2
mvn clean install

Wellenreiter

I need to check, what I have changed in feathercoinj-0.98-SNAPSHOT

could take a day or two…

quite busy at the moment ;)

wrapper

@Wellenreiter looks like feathercoinj master was set to v0.97 ,

Build Feathercoinj
git clone https://github.com/wellenreiter01/feathercoinj
compile feathercoinj
‘mvn clean install -DskipTests’ (No space after the -D )`

I’m just trying git checkout v0.98 now on feathercoinj - see if that compiles :

Build test feathercoinj Passed .

Build success

[INFO] Replacing /home/tony/feathercoinj/tools/target/feathercoinj-tools-0.98-SNAPSHOT.jar with /home/tony/feathercoinj/tools/target/feathercoinj-tools-0.98-SNAPSHOT-shaded.jar

Build test feathercoin-wallet-2

Build feathercoin-wallet-2 :
git clone https://github.com/wellenreiter01/feathercoin-wallet-2
cd to feathercoin-wallet-2
mvn clean install -U (-U rebuild all modules)

[ERROR] Failed to execute goal on project wallet: Could not resolve dependencies for project com.feathercoin.wallet:wallet:apk:3.04: The following artifacts could not be resolved: com.google:feathercoinj:jar:0.98-SNAPSHOT, com.feathercoin.wallet:integration-android:jar:1.0: Could not find artifact com.google:feathercoinj:jar:0.98-SNAPSHOT -> [Help 1]

ghostlander

You’re working with some old NeoScrypt code base of 2015 or so. I suggest to update first.

https://github.com/ghostlander/NeoScrypt

wrapper

Cheers @ghostlander

Feathercoin-wallet-2 ~~Build now works~~

I have cloned your new neoscrypt from here:

git clone https://github.com/ghostlander/NeoScrypt.git

Then :
Copied the neoscrypt.c and .h

into : /feathercoinj/core/jni/ ,

and recompile feathercoinj

Test build / audit / feathercoin-wallet-2

Results of builds

mvn site --errors

[INFO] Feathercoin Wallet … SUCCESS [ 8.719 s]

Errors and warning

[INFO] Error stacktraces are turned on.

[WARNING] Some problems were encountered while building the effective model for com.feathercoin.wallet:wallet:apk:3.04
[WARNING] ‘build.plugins.plugin.version’ for com.jayway.maven.plugins.android.generation2:maven-android-plugin is missing. @ line 185, column 12
[WARNING] ‘build.plugins.plugin.version’ for org.apache.maven.plugins:maven-jarsigner-plugin is missing. @ line 152, column 13

[WARNING] Report plugin org.apache.maven.plugins:maven-project-info-reports-plugin has an empty version.

[WARNING] No project URL defined - decoration links will not be relativized!

Summery
[WARNING] Report plugin org.apache.maven.plugins:maven-project-info-reports-plugin has an empty version.
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[INFO] configuring report plugin org.apache.maven.plugins:maven-project-info-reports-plugin:2.9
[WARNING] No project URL defined - decoration links will not be relativized!
[INFO] Rendering site with org.apache.maven.skins:maven-default-skin:jar:1.0 skin.
[INFO] Generating “Dependencies” report — maven-project-info-reports-plugin:2.9
[WARNING] The repository url ‘http://people.apache.org/repo/m2-snapshot-repository’ is invalid - Repository ‘apache.snapshots’ will be blacklisted.

Still fails with normal build instructions

mvn clean install -X

Further work
Push 3 commits need to get this far.

I’ll continue to look at what went wrong (error and warning messages) with the maven build for feathercoin-walet-2

feathercoin-wallet v5 build environment
Move on to getting the bitcoin-wallet android wallt to compile - ready to start looking at the best way to reintroduce the needed litecoin / feathercoin specific settings.

Litecoin wallet status
I note the Litecoin-wallet is also stuck at version 3 - so it would be interesting / good to try and form some collaboration / brance that does both? or could be pushed upstream, to build either, bitcoinj, litecoinj or feathercoinj …

wrapper

feathercoin-wallet-2 build environment, Fixing / research on

Research / experiment with Homebrew to install old version of Maven

**Build status : failed

The feathercoinj does compile and appears to be installed in maven2 correctly.

feathercoin-wallet-2 won’t compile, with the instructions provided. A couple of additional instructions / settings have helped, or may be necessary, have been identified.

Possible cause needs specific maven version to build

Information so far shows a change in the development environment, like the version of the build system Maven, is a likely area to cause the problem.

$ brew doctor

Warning: Unbrewed header files were found in /usr/local/include.
If you didn’t put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted.

Unexpected header files:
/usr/local/include/zxing/Exception.h
…

Warning: Unbrewed static libraries were found in /usr/local/lib.
If you didn’t put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected static libraries:
/usr/local/lib/libzxing.a

Warning: /usr/bin occurs before /home/tony/.linuxbrew/bin
This means that system-provided programs will be used instead of those
provided by Homebrew. The following tools exist at both paths:
mvnDebug
brew
mvn

Consider setting your PATH so that /home/tony/.linuxbrew/bin
occurs before /usr/bin. Here is a one-liner:
echo ‘export PATH=“/home/wrapper/.linuxbrew/bin:$PATH”’ >> ~/.bash_profile

Warning: Homebrew’s bin was not found in your PATH.
Consider setting the PATH for example like so
echo ‘export PATH=“/home/wrapper/.linuxbrew/bin:$PATH”’ >> ~/.bash_profile

Warning: Homebrew’s share was not found in your XDG_DATA_DIRS but you have this variable set to include other locations.
Some programs like vapigen may not work correctly.

wrapper

This is an experimental build of feathercoin-wallet-2 to try to update dependencies and get the original maven build to compile / pull into gradle. Draft build Instructions.

Instructions to try updated / experimental feathercoin-wallet-2 build

Follow the guide to install dependencies and set SDK / Ndk and how to compile and feathercoin-wallet-2 v3.04 and feathercoinj, the java wrapper to Neoscrypt.c

Making sure you have < 150 GB space free, run an android update :
/media/BigDisk1/Android/Sdk/tools/android update sdk --no-ui --obsolete --force

Download and build the test versions. :

Build feathercoinj
git clone https://github.com/wrapperband/feathercoinj
compile feathercoinj
mvn clean install -DskipTests

Build feathercoin-wallet-2 :
Open a Terminal : check the path to your android Sdk and :
export ANDROID_HOME=$HOME/Android/Sdk
export PATH=$PATH:$ANDROID_HOME/tools

The Android directory can be large here is it if it is not on /home disk :
export ANDROID_HOME=/media/BigDisk1/Android/Sdk

Clone the repository
git clone https://github.com/wrapperband/feathercoin-wallet-2
cd to feathercoin-wallet-2

Compile the wallet and associated modules :
mvn clean install -U (-U rebuild all modules)

or compile offline :
mvn dependency:resolve
mvn dependency:resolve-plugins
key to switches : -o = offline -e = errors -X = debug -U = all modules
mvn clean install -DskipTests -o -e -X -U

[Current errors compiling feathercoin-wallet-2 :]

mvn dependency:resolve

[ERROR] Failed to execute goal on project wallet: Could not resolve dependencies for project com.feathercoin.wallet:wallet:apk:3.04: Failure to find com.feathercoin.wallet:integration-android:jar:1.0 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]

mvn clean install -DskipTests -o -e -X -U

Apache Maven 3.3.9
Maven home: /usr/share/maven
Java version: 1.8.0_121, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-8-oracle/jre
Default locale: en_GB, platform encoding: UTF-8
OS name: “linux”, version: “4.8.0-37-generic”, arch: “amd64”, family: “unix”
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects…
[WARNING]
[WARNING] Some problems were encountered while building the effective model for com.feathercoin.wallet:wallet:apk:3.04
[WARNING] ‘build.plugins.plugin.version’ for com.jayway.maven.plugins.android.generation2:maven-android-plugin is missing. @ line 185, column 12
[WARNING] ‘build.plugins.plugin.version’ for org.apache.maven.plugins:maven-jarsigner-plugin is missing. @ line 152, column 13

wrapper

Importing the feathercoin wallet 2 a maven build into gradle to make it an android-studio project

The feathercoin-wallet-2 android wallet won’t compile. The most efficiency way forward is to fork the latest android wallet code and re add FTC specific settings.

However, on going development and knowledge of other potential fixes that can be applied to the mobile wallet, make it expedient to try to compile the old version.

Although, compiling the old wallet (v2) in a later (v5) environment has been shown to be very complicated. That experience is useful, when trying to duplicate undocumented one off work.

https://developer.android.com/studio/intro/migrate.html

Are these the correct settings?
When the wallet is imported or the new wallet forked, there are some default settings :

Phone / Tablet
Minimum SDK (15) : Android 4.0.3 Ice cream sandwich Was 14 was old setting?

Do we need to release different versions for TVs smart boxes etc very popular?

Wear : SDK (21)
TV : (21)
Auto : (21)
Glass : (gdk 19)

wrapper

Development of Feathercoin Mobile Wallet.

@Wellenreiter has fixed the compile issue with the mobile wallet and updated the current wallet to be compatible with 0.6.0 wallet.

ToDo
Update to include and test V4 bridge compatibility
Include a privacy statement
Fix compile issue with Android Studio > 2.4 preview 7
Include latest Neoscrypt
Update build instructions.

Move to head …

Instructions : for https://github.com/wellenreiter01/feathercoinj

git clone https://github.com/wellenreiter01/feathercoinj
git checkout v0.99

and

git clone https://github.com/wellenreiter01/feathercoin-wallet-2

Wellenreiter

@wrapper said in [Dev] feathercoin-wallet - Version 5 Development - Mobile / Android wallet:

@Wellenreiter has fixed the compile issue with the mobile wallet and updated the current wallet to be compatible with 0.6.0 wallet.

To be clear, the actual Android app is the feathercoin-wallet-2 which uses feathercoinj as a library/dependency.
The gradle settiings I implemented for feathercoinj need to be transfered/adapted to the feathercoin-wallet-2

wrapper

I managed to compile the feathercoinj with the gradle command :

cd feathercoinj
gradle clean :native-scrypt:copy test build

I was then able to run gradle init on feathercoin-wallet-2

gradle init

That seems to be the first step in updating to gradle. Maven compiled to a common directory where feathercoinj was available.

note: The Thread how to was followed to install dependancies.
Most of the notes are irrelevant (failed ways forward / info), especially with the the less work on the old version as possible, but looking back over, the neoscrypt update may be use-able.

note: not assuming this actually built.

Gradle Build :

$ cd feathercoin-wallet-2
$ gradle clean build

:clean UP-TO-DATE
:integration-android:clean UP-TO-DATE
:sample-integration-android:clean UP-TO-DATE
:wallet:clean UP-TO-DATE
:assemble UP-TO-DATE
:check UP-TO-DATE
:build UP-TO-DATE
:integration-android:compileJava UP-TO-DATE
:integration-android:processResources UP-TO-DATE
:integration-android:classes UP-TO-DATE
:integration-android:jar
:integration-android:assemble
:integration-android:compileTestJava UP-TO-DATE
:integration-android:processTestResources UP-TO-DATE
:integration-android:testClasses UP-TO-DATE
:integration-android:test UP-TO-DATE
:integration-android:check UP-TO-DATE
:integration-android:build
:sample-integration-android:compileJava UP-TO-DATE
:sample-integration-android:processResources UP-TO-DATE
:sample-integration-android:classes UP-TO-DATE
:sample-integration-android:jar
:sample-integration-android:assemble
:sample-integration-android:compileTestJava UP-TO-DATE
:sample-integration-android:processTestResources UP-TO-DATE
:sample-integration-android:testClasses UP-TO-DATE
:sample-integration-android:test UP-TO-DATE
:sample-integration-android:check UP-TO-DATE
:sample-integration-android:build
:wallet:compileJava UP-TO-DATE
:wallet:processResources UP-TO-DATE
:wallet:classes UP-TO-DATE
:wallet:jar
:wallet:assemble
:wallet:compileTestJava UP-TO-DATE
:wallet:processTestResources UP-TO-DATE
:wallet:testClasses UP-TO-DATE
:wallet:test UP-TO-DATE
:wallet:check UP-TO-DATE
:wallet:build

BUILD SUCCESSFUL

Total time: 1.828 secs