Android SDK

Native Kotlin library for private token transfers with Hinkal.

The Android SDK is the Hinkal Go core compiled to a native .aar with gomobile and published to Maven Central as io.hinkal:hinkal-android. Your app calls Kotlin methods; the SDK handles the proofs, UTXOs, and relaying. Signing stays in your app - the private key never leaves the device wallet.

Features

• Published to Maven Central, one Gradle line to add

• Deposit, withdraw, transfer, swap, and bridge from the private balance

• Host wallet delegate for EVM, Solana, and TRON signing

• JSON-string boundary, so lists batch in a single call

• Feature parity with the iOS SDK

Installation

implementation("io.hinkal:hinkal-android:0.1.0")

import io.hinkal.mobile.Mobile

Quick Example

val client = Mobile.newClient()
val address = client.connect(WalletHost(yourWallet))
val hinkal = client.hinkal()

val wei = Mobile.amountToWei(chainId, tokenAddress, "1.0")
val result = hinkal.deposit(
    chainId,
    "[\"$tokenAddress\"]",
    "[\"$wei\"]",
    true,
    false,
)

Core Operations

Method	Purpose
deposit	Public to private
withdraw	Private to public
transfer	Private to private
swap	Private swap
bridgePrivateToPrivate	Private to private across chains
getTotalBalance	Shielded balance
getRecipientInfo	Private address for the identity

Documentation

Getting Started

• Installation

• Getting Started

Guides

• Deposits

• Withdrawals

• Transfers

• Swaps

• Balances

• Multi-Chain

• Wallet Integration

• Error Handling

Advanced

• Performance

• Error Handling Patterns

Reference

• API Reference

Requirements

• minSdk 21

• ABIs: arm64-v8a, x86_64

Related

• iOS SDK