Welcome to your guide on creating a standalone Bitcoin payment app—an exciting journey into the world of cryptocurrency! Here, we’ll walk you through the necessary steps to build your own Bitcoin wallet for your Android device.

Prerequisites for Building Your Bitcoin Wallet

Before diving in, let’s ensure you have everything you need to start this project:

• Operating System: Ubuntu 24.04 LTS (Noble Numbat) is recommended.
• Required Software: You’ll need to install the following:
  • Git
  • Java 11 SDK
  • Gradle (version 4.4 to 6.9.x)

For the first time, you can install all necessary packages with this command:

sudo apt install git gradle openjdk-11-jdk

Setting Up the Android SDK

Create a directory for the Android SDK (e.g., android-sdk) and ensure your ANDROID_HOME variable points to this directory.

Next, download the Android SDK Tools and unpack it to $ANDROID_HOME.

Acquiring the Source Code

In your workspace, you will need to clone the Bitcoin wallet repository. For the first time, run the following commands:

git clone -b main https://github.com/bitcoin-wallet/bitcoin-wallet.git bitcoin-wallet
cd bitcoin-wallet

Building the Bitcoin Wallet

Once you have the source code, you can build all sub-projects using Gradle with a simple command:

gradle clean build

For specific instructions on building the wallet itself, check the specific README.

Reproducible Build with Buildah

Alternatively, you can achieve a reproducible build using Buildah. The command for this is:

buildah build --cap-add sys_admin --device /dev/fuse --file build.Containerfile --output build .

Make sure you have access to FUSE and the SYS_ADMIN capability, which are crucial for properly mounting filesystem types.

Troubleshooting

If you encounter any issues during the setup or build process, consider the following troubleshooting ideas:

• Ensure all dependencies (Java, Git, and Gradle) are correctly installed and updated to the required versions.
• Check that your ANDROID_HOME variable is correctly set and points to the right directory.
• If cloning the repository fails, verify the URL and ensure you have internet access.

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Conclusion

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.