Tesseract Android

Tesseract Android provides Java/Kotlin APIs for Tesseract, a dApp-Wallet bridge designed to make dApp/wallet communication on mobile devices simple and natural without compromising decentralization and security

If you are looking for Tesseract docs for another language/OS, please, consider one of the following:

• General info
• Tesseract Swift (iOS)
• Tesseract Rust

Getting started

Tesseract provides two sets of APIs, one for a dApp that wants to connect to the wallets and one for the wallets that want to serve the dApps.

Here is how a typical Tesseract workflow looks like:

//initialize Tesseract
val tesseract = Tesseract.default()

//indicate what blockchain are we gonna use
val substrateService = tesseract.service(SubstrateService.class)

//at this point Tesseract connects to the
//wallet and the wallet presents the user
//with its screen, asking if the user
//wants to share their public key to a dApp
val account = substrateService.getAccount(AccountType.Sr25519)

//Inside the Wallet Tesseract serves requests
//from the dApps as long as the reference is kept alive
//save it somewhere in the Application instance
val tesseract = Tesseract
    .default() //start with default configuration
    .service(MySubstrateService())
//MySubstrateService instance methods
//will be called when a dApp asks for something

Details

Because using Tesseract in Tesseract in a dApp and in a wallet is very different by nature (essentially communicating as a client and a service), the detailed documentation is split into two documents:

• Tesseract for dApp developers
• Tesseract for Wallet developers

Examples

If you'd like to see examples of Tesseract integration, please, check:

• dev-wallet.kotlin - for wallets
• polkachat.kotlin - for dApps, TBD

More

Just in case, you'd like to use Tesseract on android via Rust APIs. It's also possible. Consider checking one of the following:

• Using Tesseract on Android in Rust
• Developer Wallet in Rust

Roadmap

• v0.1 - IPC transport for Android - connect dApp/Wallet on the same device
• v0.2 - demo dApp and Wallet
• v0.3 - Susbtrate protocol support
• v0.4 - dev-wallet.kotlin test implementation
• v0.5 - first Kotlin libraries release version
• v1.0 - support of everything mobile dApps need

License

Tesseract.android can be used, distributed and modified under the Apache 2.0 license.