Kotlin Blade for Android
Kotlin

Usage

Contents

Methods

initialize

Init instance of BladeSDK for correct work with Blade API and Hedera network.

initialize (apiKey: String, dAppCode: String, network: String, bladeEnv: BladeEnv = BladeEnv.Prod, context: Context, force: Boolean = false, completion: (InfoData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

apiKey

String

Unique key for API provided by Blade team.

dAppCode

String

your dAppCode - request specific one by contacting Bladelabs team

network

String

"Mainnet" or "Testnet" of Hedera network

bladeEnv

BladeEnv

field to set BladeAPI environment (Prod, CI). Prod used by default.

context

Context

android context

force

Boolean

optional field to force init. Will not crash if already initialized

completion

(InfoData?,BladeJSError?)->Unit

callback function, with result of InfoData or BladeJSError

Returns

InfoData - with information about Blade instance, including visitorId

Example

Blade.initialize(
    Config.apiKey, Config.dAppCode, Config.network, Config.bladeEnv, requireContext(), false
) { infoData, error ->
    println(infoData ?: error)
}

getInfo

Get SDK info and check if SDK initialized

getInfo (completion: (InfoData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

completion

(InfoData?,BladeJSError?)->Unit

callback function, with result of InfoData or BladeJSError

Returns

InfoData - with information about Blade instance, including visitorId

Example

Blade.getInfo { infoData, error ->
    println(infoData ?: error)
}

getBalance

Get balances by account id.

getBalance (id: String, completion: (BalanceData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

id

String

Hedera account id

completion

(BalanceData?,BladeJSError?)->Unit

callback function, with result of BalanceData or BladeJSError

Returns

BalanceData - with information about Hedera account balances (hbar and list of token balances)

Example

Blade.getBalance("0.0.45467464") { result, error ->
    println("${ result ?: error}")
}

getCoinList

Get list of all available coins on CoinGecko.

getCoinList (completion: (CoinListData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

completion

(CoinListData?,BladeJSError?)->Unit

callback function, with result of CoinListData or BladeJSError

Returns

CoinListData - with list of coins described by name, alias, platforms

Example

Blade.getCoinList { result, error ->
    if (result != null) {
        for (coin in result.coins) {
            println(coin)
        }
    } else {
        println(error)
    }
}

getCoinPrice

Get coin price and coin info from CoinGecko. Search can be coin id or address in one of the coin platforms.

  • In addition to the price in USD, the price in the currency you specified is returned

getCoinPrice (search: String, currency: String = "usd", completion: (CoinInfoData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

search

String

CoinGecko coinId, or address in one of the coin platforms or hbar (default, alias for hedera-hashgraph)

currency

String

result currency for price field

completion

(CoinInfoData?,BladeJSError?)->Unit

callback function, with result of CoinListData or BladeJSError

Returns

{CoinInfoData}

Example

Blade.getCoinPrice(
    search = "hbar",
    currency = "uah"
) { result, bladeJSError ->
    println("${result ?: bladeJSError}")
}

transferHbars

Method to execute Hbar transfers from current account to receiver

transferHbars (accountId: String, accountPrivateKey: String, receiverId: String, amount: Double, memo: String, completion: (TransactionReceiptData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

accountId

String

sender account id

accountPrivateKey

String

sender's private key to sign transfer transaction

receiverId

String

receiver

amount

Double

amount

memo

String

memo (limited to 100 characters)

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of TransactionReceiptData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

val senderId = "0.0.10001"
val senderKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
val receiverId = "0.0.10002"
val amount = 2.5
Blade.transferHbars(
    senderId,
    senderKey,
    receiverId,
    amount,
    "Some memo text"
) { result, error ->
    println(result ?: error)
}

transferTokens

Method to execute token transfers from current account to receiver

transferTokens (tokenId: String, accountId: String, accountPrivateKey: String, receiverId: String, amountOrSerial: Double, memo: String, usePaymaster: Boolean = true, completion: (TransactionReceiptData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

tokenId

String

token id to send (0.0.xxxxx)

accountId

String

sender account id (0.0.xxxxx)

accountPrivateKey

String

sender's hex-encoded private key with DER-header (302e020100300506032b657004220420...). ECDSA or Ed25519

receiverId

String

receiver account id (0.0.xxxxx)

amountOrSerial

Double

amount of fungible tokens to send (with token-decimals correction) on NFT serial number

memo

String

transaction memo (limited to 100 characters)

usePaymaster

Boolean

if true, Paymaster account will pay fee transaction. Only for single dApp configured fungible-token. In that case tokenId not used

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of TransactionReceiptData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

val tokenId = "0.0.1337"
val senderId = "0.0.10001"
val senderKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
val receiverId = "0.0.10002"
val amount = 2.5
Blade.transferTokens(
    tokenId,
    senderId,
    senderKey,
    receiverId,
    amount,
    "Token transfer memo"
) { result, error ->
    println(result ?: error)
}

createScheduleTransaction

Create scheduled transaction

createScheduleTransaction ( accountId: String, accountPrivateKey: String, type: ScheduleTransactionType, transfers: List<ScheduleTransactionTransfer>, usePaymaster: Boolean = false, completion: (CreateScheduleData?, BladeJSError?) -> Unit )

Parameters

NameTypeDescription

accountId

String

account id (0.0.xxxxx)

accountPrivateKey

String

account key (hex encoded privateKey with DER-prefix)

type

ScheduleTransactionType

schedule transaction type (currently only TRANSFER supported)

transfers

List<ScheduleTransactionTransfer>

array of transfers to schedule (HBAR, FT, NFT)

usePaymaster

Boolean

if true, Paymaster account will pay transaction fee (also dApp had to be configured for free schedules)

completion

(CreateScheduleData?,BladeJSError?)->Unit

callback function, with result of CreateScheduleData or BladeJSError

Returns

CreateScheduleData - scheduleId

Example

val receiverId = "0.0.10002"
val receiverKey = "302d300706052b8104000a032200029dc73991b00002..."
val senderId = "0.0.10001"
val tokenId = "0.0.1337"
var scheduleId = ""
Blade.createScheduleTransaction(
    accountId = receiverId,
    accountPrivateKey = receiverKey,
    type = ScheduleTransactionType.TRANSFER,
    transfers = listOf(
        ScheduleTransactionTransferHbar(sender = senderId, receiver = receiverId, 10000000),
        ScheduleTransactionTransferToken(sender = senderId, receiver = receiverId, tokenId = tokenId, value = 3)
    ),
    usePaymaster = true,
) { result, error ->
    if (result != null) {
        println(result.scheduleId)
    }
}

signScheduleId

Method to sign scheduled transaction

signScheduleId ( scheduleId: String, accountId: String, accountPrivateKey: String, receiverAccountId: String = "", usePaymaster: Boolean = false, completion: (TransactionReceiptData?, BladeJSError?) -> Unit )

Parameters

NameTypeDescription

scheduleId

String

scheduled transaction id (0.0.xxxxx)

accountId

String

account id (0.0.xxxxx)

accountPrivateKey

String

account key (hex encoded privateKey with DER-prefix)

receiverAccountId

String

account id of receiver for additional validation in case of dApp freeSchedule transactions configured

usePaymaster

Boolean

if true, Paymaster account will pay transaction fee (also dApp had to be configured for free schedules)

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of TransactionReceiptData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

val senderId = "0.0.10001"
val senderKey = "302d300706052b8104000a032200029dc73991b00001..."
val receiverId = "0.0.10002"
var scheduleId = "0.0...." // result of createScheduleTransaction on receiver side
Blade.signScheduleId(
    scheduleId = scheduleId,
    accountId = senderId,
    accountPrivateKey = senderKey,
    receiverAccountId = receiverId,
    usePaymaster = true
) { result, bladeJSError ->
    println(result ?: bladeJSError)
}

createHederaAccount

Create new Hedera account (ECDSA). Only for configured dApps. Depending on dApp config Blade create account, associate tokens, etc.

  • In case of not using pre-created accounts pool and network high load, this method can return transactionId and no accountId.

  • In that case account creation added to queue, and you should wait some time and call getPendingAccount() method.

createHederaAccount (privateKey: String = "", deviceId: String = "", completion: (CreatedAccountData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

privateKey

String

optional field if you need specify account key (hex encoded privateKey with DER-prefix)

deviceId

String

optional field unique device id (advanced security feature, required only for some dApps)

completion

(CreatedAccountData?,BladeJSError?)->Unit

callback function, with result of CreatedAccountData or BladeJSError

Returns

CreatedAccountData - new account data, including private key and account id

Example

Blade.createHederaAccount() { result, error ->
    println(result ?: error)
}

getPendingAccount

Get account from queue (read more at createAccount()).

  • If account already created, return account data.

  • If account not created yet, response will be same as in createAccount() method if account in queue.

getPendingAccount (transactionId: String, seedPhrase: String, completion: (CreatedAccountData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

transactionId

String

can be received on createHederaAccount method, when busy network is busy, and account creation added to queue

seedPhrase

String

returned from createHederaAccount method, required for updating keys and proper response

completion

(CreatedAccountData?,BladeJSError?)->Unit

callback function, with result of CreatedAccountData or BladeJSError

Returns

CreatedAccountData - new account data

deleteHederaAccount

Delete Hedera account. This method requires account private key and operator private key. Operator is the one who paying fees

deleteHederaAccount (deleteAccountId: String, deletePrivateKey: String, transferAccountId: String, operatorAccountId: String, operatorPrivateKey: String, completion: (TransactionReceiptData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

deleteAccountId

String

account id of account to delete (0.0.xxxxx)

deletePrivateKey

String

account private key (DER encoded hex string)

transferAccountId

String

The ID of the account to transfer the remaining funds to.

operatorAccountId

String

operator account id (0.0.xxxxx). Used for fee

operatorPrivateKey

String

operator's account private key (DER encoded hex string)

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of TransactionReceiptData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

val deleteAccountId = "0.0.65468464"
val deletePrivateKey = "3030020100300706052b8104000a04220420ebc..."
val transferAccountId = "0.0.10001"
val operatorAccountId = "0.0.10002"
val operatorPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
Blade.deleteHederaAccount(
    deleteAccountId,
    deletePrivateKey,
    transferAccountId,
    operatorAccountId,
    operatorPrivateKey,
) { result, error ->
    println(result ?: error)
}

getAccountInfo

Get account info.

  • EvmAddress is address of Hedera account if exists. Else accountId will be converted to solidity address.

  • CalculatedEvmAddress is calculated from account public key. May be different from evmAddress.

getAccountInfo (accountId: String, completion: (AccountInfoData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

accountId

String

Hedera account id (0.0.xxxxx)

completion

(AccountInfoData?,BladeJSError?)->Unit

callback function, with result of AccountInfoData or BladeJSError

Returns

{AccountInfoData}

Example

Blade.getAccountInfo("0.0.10002") { accountInfoData, error ->
    println(accountInfoData ?: error)
}

getNodeList

Get Node list and use it for choosing account stacking node

getNodeList (completion: (NodesData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

completion

(NodesData?,BladeJSError?)->Unit

callback function, with result of NodesData or BladeJSError

Returns

NodesData - node list

Example

Blade.getNodeList { nodeListData, error ->
    println(nodeListData ?: error)
}

stakeToNode

Stake/unstake account

stakeToNode (accountId: String, accountPrivateKey: String, nodeId: Int, completion: (TransactionReceiptData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

accountId

String

Hedera account id (0.0.xxxxx)

accountPrivateKey

String

account private key (DER encoded hex string)

nodeId

Int

node id to stake to. If negative or null, account will be unstaked

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of TransactionReceiptData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

Blade.stakeToNode("0.0.10002", "302d300706052b8104000a032200029dc73991b0d9cd...", 5) { result, error ->
    println(result ?: error)
}

getKeysFromMnemonic

Get private key and accountId from mnemonic. Supported standard and legacy key derivation.

  • If account not found, standard ECDSA key will be returned.

  • Keys returned with DER header. EvmAddress computed from Public key.

getKeysFromMnemonic (mnemonic: String, lookupNames: Boolean = false, completion: (PrivateKeyData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

mnemonic

String

seed phrase (BIP39 mnemonic)

lookupNames

Boolean

lookup for accounts (not used anymore, account search is mandatory)

completion

(PrivateKeyData?,BladeJSError?)->Unit

callback function, with result of PrivateKeyData or BladeJSError

Returns

PrivateKeyData - private key derived from mnemonic and account id

Example

Blade.getKeysFromMnemonic("purity slab doctor swamp tackle rebuild summer bean craft toddler blouse switch") { result, error ->
    println(result ?: error)
}

searchAccounts

Get accounts list and keys from private key or mnemonic

  • Supporting standard and legacy key derivation.

  • Every key with account will be returned.

searchAccounts (keyOrMnemonic: String, completion: (AccountPrivateData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

keyOrMnemonic

String

BIP39 mnemonic, private key with DER header

completion

(AccountPrivateData?,BladeJSError?)->Unit

callback function, with result of AccountPrivateData or BladeJSError

Returns

AccountPrivateData - list of found accounts with private keys

Example

Blade.searchAccounts("purity slab doctor swamp tackle rebuild summer bean craft toddler blouse switch") { result, error ->
    println(result ?: error)
}

dropTokens

Bladelink drop to account

dropTokens (accountId: String, accountPrivateKey: String, secretNonce: String, completion: (TokenDropData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

accountId

String

Hedera account id (0.0.xxxxx)

accountPrivateKey

String

account private key (DER encoded hex string)

secretNonce

String

configured for dApp. Should be kept in secret

completion

(TokenDropData?,BladeJSError?)->Unit

callback function, with result of TokenDropData or BladeJSError

Returns

TokenDropData - status

Example

val accountId = "0.0.10002"
val accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
val secretNonce = "[ CENSORED ]"
Blade.dropTokens(
    accountId,
    accountPrivateKey,
    secretNonce,
) { result, error ->
    println(result ?: error)
}

sign

Sign base64-encoded message with private key. Returns hex-encoded signature.

sign (messageString: String, privateKey: String, completion: (SignMessageData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

messageString

String

base64-encoded message to sign

privateKey

String

hex-encoded private key with DER header

completion

(SignMessageData?,BladeJSError?)->Unit

callback function, with result of SignMessageData or BladeJSError

Returns

SignMessageData - signature

Example

import java.util.Base64
// ...
val originalString = "hello"
val encodedString: String = Base64.getEncoder().encodeToString(originalString.toByteArray())
val accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
Blade.sign(
    encodedString,
    accountPrivateKey
) { result, error ->
    println(result ?: error)
}

signVerify

Verify message signature with public key

signVerify (messageString: String, signature: String, publicKey: String, completion: (SignVerifyMessageData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

messageString

String

base64-encoded message (same as provided to sign() method)

signature

String

hex-encoded signature (result from sign() method)

publicKey

String

hex-encoded public key with DER header

completion

(SignVerifyMessageData?,BladeJSError?)->Unit

callback function, with result of SignVerifyMessageData or BladeJSError

Returns

SignVerifyMessageData - verification result

Example

val originalString = "hello"
val encodedString: String = Base64.getEncoder().encodeToString(originalString.toByteArray())
val signature = "27cb9d51434cf1e76d7ac515b19442c619f641e6fccddbf4a3756b14466becb6992dc1d2a82268018147141fc8d66ff9ade43b7f78c176d070a66372d655f942"
val publicKey = "302d300706052b8104000a032200029dc73991b0d9cdbb59b2cd0a97a0eaff6de801726cb39804ea9461df6be2dd30"
Blade.signVerify(
    encodedString,
    signature,
    publicKey
) { result, error ->
    lifecycleScope.launch {
        println(result ?: error)
    }
}

contractCallFunction

Call contract function. Directly or via BladeAPI using paymaster account (fee will be paid by Paymaster account), depending on your dApp configuration.

contractCallFunction (contractId: String, functionName: String, params: ContractFunctionParameters, accountId: String, accountPrivateKey: String, gas: Int = 100000, usePaymaster: Boolean, completion: (TransactionReceiptData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

contractId

String

contract id (0.0.xxxxx)

functionName

String

name of the contract function to call

params

ContractFunctionParameters

function argument. Can be generated with

accountId

String

operator account id (0.0.xxxxx)

accountPrivateKey

String

operator's hex-encoded private key with DER-header, ECDSA or Ed25519

gas

Int

gas limit for the transaction

usePaymaster

Boolean

if true, fee will be paid by Paymaster account (note: msg.sender inside the contract will be Paymaster account)

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of TransactionReceiptData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

val contractId = "0.0.123456"
val functionName = "set_message"
val parameters = ContractFunctionParameters().addString("hello")
val accountId = "0.0.10002"
val accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
val gas = 155000
val usePaymaster = false
Blade.contractCallFunction(
    contractId,
    functionName,
    parameters,
    accountId,
    accountPrivateKey,
    gas,
    usePaymaster
) { result, error ->
    println(result ?: error)
}

contractCallQueryFunction

Call query on contract function. Similar to {@link contractCallFunction} can be called directly or via BladeAPI using Paymaster account.

contractCallQueryFunction (contractId: String, functionName: String, params: ContractFunctionParameters, accountId: String, accountPrivateKey: String, gas: Int = 100000, usePaymaster: Boolean, returnTypes: List<String>, completion: (ContractQueryData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

contractId

String

contract id (0.0.xxxxx)

functionName

String

name of the contract function to call

params

ContractFunctionParameters

function argument. Can be generated with

accountId

String

operator account id (0.0.xxxxx)

accountPrivateKey

String

operator's hex-encoded private key with DER-header, ECDSA or Ed25519

gas

Int

gas limit for the transaction

usePaymaster

Boolean

if true, the fee will be paid by paymaster account (note: msg.sender inside the contract will be Paymaster account)

returnTypes

List<String>

List of return types, e.g. listOf("string", "int32")

completion

(ContractQueryData?,BladeJSError?)->Unit

callback function, with result of ContractQueryData or BladeJSError

Returns

ContractQueryData - contract query call result

Example

val contractId = "0.0.123456"
val functionName = "get_message"
val parameters = ContractFunctionParameters()
val accountId = "0.0.10002"
val accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
val gas = 55000
val usePaymaster = false
val returnTypes = listOf("string", "int32")
Blade.contractCallQueryFunction(
    contractId,
    functionName,
    parameters,
    accountId,
    accountPrivateKey,
    gas,
    usePaymaster,
    returnTypes
) { result, error ->
    lifecycleScope.launch {
        println(result ?: error)
    }
}

ethersSign

Sign base64-encoded message with private key using ethers lib. Returns hex-encoded signature.

ethersSign (messageString: String, privateKey: String, completion: (SignMessageData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

messageString

String

base64-encoded message to sign

privateKey

String

hex-encoded private key with DER header

completion

(SignMessageData?,BladeJSError?)->Unit

callback function, with result of SignMessageData or BladeJSError

Returns

SignMessageData - signature

Example

import java.util.Base64
// ...
val originalString = "hello"
val encodedString: String = Base64.getEncoder().encodeToString(originalString.toByteArray())
val accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
Blade.ethersSign(
    encodedString,
    accountPrivateKey
) { result, error ->
    println(result ?: error)
}

splitSignature

Split signature to v-r-s format.

splitSignature (signature: String, completion: (SplitSignatureData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

signature

String

hex-encoded signature

completion

(SplitSignatureData?,BladeJSError?)->Unit

callback function, with result of SplitSignatureData or BladeJSError

Returns

SplitSignatureData - v-r-s signature

Example

Blade.splitSignature(
    "0x27cb9d51434cf1e76d7ac515b19442c619f641e6fccddbf4a3756b14466becb6992dc1d2a82268018147141fc8d66ff9ade43b7f78c176d070a66372d655f942",
) { result, error ->
    println(result ?: error)
}

getParamsSignature

Get v-r-s signature of contract function params

getParamsSignature (params: ContractFunctionParameters, accountPrivateKey: String, completion: (SplitSignatureData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

params

ContractFunctionParameters

data to sign. (instance of ContractFunctionParameters)

accountPrivateKey

String

signer private key (hex-encoded with DER header)

completion

(SplitSignatureData?,BladeJSError?)->Unit

callback function, with result of SplitSignatureData or BladeJSError

Returns

SplitSignatureData - v-r-s signature

Example

val parameters = ContractFunctionParameters().addString("hello")
val accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
Blade.getParamsSignature(
    parameters,
    accountPrivateKey
) { result, error ->
    println(result ?: error)
}

getTransactions

Get transactions history for account. Can be filtered by transaction type.

  • Transaction requested from mirror node. Every transaction requested for child transactions. Result are flattened.

  • If transaction type is not provided, all transactions will be returned.

  • If transaction type is CRYPTOTRANSFERTOKEN records will additionally contain plainData field with decoded data.

getTransactions (accountId: String, transactionType: String, nextPage: String = "", transactionsLimit: Int = 10, completion: (TransactionsHistoryData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

accountId

String

account id to get transactions for (0.0.xxxxx)

transactionType

String

one of enum MirrorNodeTransactionType or "CRYPTOTRANSFERTOKEN"

nextPage

String

link to next page of transactions from previous request

transactionsLimit

Int

number of transactions to return. Speed of request depends on this value if transactionType is set.

completion

(TransactionsHistoryData?,BladeJSError?)->Unit

callback function, with result of TransactionsHistoryData or BladeJSError

Returns

TransactionsHistoryData - transactions list

Example

Blade.getTransactions(
    accountId = "0.0.10002",
    transactionType = "",
    nextPage = "",
    transactionsLimit = 15
) { result, error ->
    println(result ?: error)
}

getC14url

Get configured url for C14 integration (iframe or popup)

getC14url (asset: String, account: String, amount: String = "", completion: (IntegrationUrlData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

asset

String

USDC, HBAR, KARATE or C14 asset uuid

account

String

receiver account id (0.0.xxxxx)

amount

String

preset amount. May be overwritten if out of range (min/max)

completion

(IntegrationUrlData?,BladeJSError?)->Unit

callback function, with result of IntegrationUrlData or BladeJSError

Returns

IntegrationUrlData - url to open

Example

Blade.getC14url(
    asset = "HBAR",
    account = "0.0.10002",
    amount = "120"
) { result, error ->
    println(result ?: error)
}

exchangeGetQuotes

Get quotes from different services for buy, sell or swap

exchangeGetQuotes (sourceCode: String, sourceAmount: Double, targetCode: String, strategy: CryptoFlowServiceStrategy, completion: (SwapQuotesData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

sourceCode

String

name (HBAR, KARATE, other token code)

sourceAmount

Double

amount to swap, buy or sell

targetCode

String

name (HBAR, KARATE, USDC, other token code)

strategy

CryptoFlowServiceStrategy

one of enum CryptoFlowServiceStrategy (Buy, Sell, Swap)

completion

(SwapQuotesData?,BladeJSError?)->Unit

callback function, with result of SwapQuotesData or BladeJSError

Returns

SwapQuotesData - quotes from different provider

Example

Blade.exchangeGetQuotes(
    sourceCode = "EUR",
    sourceAmount = 50.0,
    targetCode = "HBAR",
    strategy = CryptoFlowServiceStrategy.BUY
) { result, error ->
    println(result ?: error)
}

getTradeUrl

Get configured url to buy or sell tokens or fiat

getTradeUrl (strategy: CryptoFlowServiceStrategy, accountId: String, sourceCode: String, sourceAmount: Double, targetCode: String, slippage: Double, serviceId: String, redirectUrl: String = "", completion: (IntegrationUrlData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

strategy

CryptoFlowServiceStrategy

Buy / Sell

accountId

String

account id

sourceCode

String

name (HBAR, KARATE, USDC, other token code)

sourceAmount

Double

amount to buy/sell

targetCode

String

name (HBAR, KARATE, USDC, other token code)

slippage

Double

slippage in percents. Transaction will revert if the price changes unfavorably by more than this percentage.

serviceId

String

service id to use for swap (saucerswap, onmeta, etc)

redirectUrl

String

url to redirect after final step

completion

(IntegrationUrlData?,BladeJSError?)->Unit

callback function, with result of IntegrationUrlData or BladeJSError

Returns

IntegrationUrlData - url to open

Example

Blade.getTradeUrl(
    strategy = CryptoFlowServiceStrategy.BUY,
    accountId = "0.0.10002",
    sourceCode = "EUR",
    sourceAmount = 50.0,
    targetCode = "HBAR",
    slippage = 0.5,
    serviceId = "moonpay"
) { result, error ->
    println(result ?: error)
}

swapTokens

Swap tokens

swapTokens (accountId: String, accountPrivateKey: String, sourceCode: String, sourceAmount: Double, targetCode: String, slippage: Double, serviceId: String, completion: (ResultData?, BladeJSError?) -> Unit)

Parameters

NameTypeDescription

accountId

String

account id

accountPrivateKey

String

account private key

sourceCode

String

name (HBAR, KARATE, other token code)

sourceAmount

Double

amount to swap

targetCode

String

name (HBAR, KARATE, other token code)

slippage

Double

slippage in percents. Transaction will revert if the price changes unfavorably by more than this percentage.

serviceId

String

service id to use for swap (saucerswap, etc)

completion

(ResultData?,BladeJSError?)->Unit

callback function, with result of ResultData or BladeJSError

Returns

ResultData - swap result

Example

val accountId = "0.0.10001"
val accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
val sourceCode = "USDC"
val targetCode = "KARATE"
Blade.swapTokens(
    accountId,
    accountPrivateKey,
    sourceCode,
    sourceAmount = 123.4,
    targetCode,
    slippage = 0.5,
    serviceId = "moonpay"
) { result, error ->
    println(result ?: error)
}

createToken

Create token (NFT or Fungible Token)

createToken ( treasuryAccountId: String, supplyPrivateKey: String, tokenName: String, tokenSymbol: String, isNft: Boolean, keys: List<KeyRecord>, decimals: Int, initialSupply: Int, maxSupply: Int, completion: (CreateTokenData?, BladeJSError?) -> Unit )

Parameters

NameTypeDescription

treasuryAccountId

String

treasury account id

supplyPrivateKey

String

supply account private key

tokenName

String

token name (string up to 100 bytes)

tokenSymbol

String

token symbol (string up to 100 bytes)

isNft

Boolean

set token type NFT

keys

List<KeyRecord>

token keys

decimals

Int

token decimals (0 for nft)

initialSupply

Int

token initial supply (0 for nft)

maxSupply

Int

token max supply

completion

(CreateTokenData?,BladeJSError?)->Unit

callback function, with result of CreateTokenData or BladeJSError

Returns

CreateTokenData - token id

Example

val keys = listOf(
    KeyRecord(Config.adminPrivateKey, KeyType.admin)
)
Blade.createToken(
        treasuryAccountId = Config.accountId,
        supplyPrivateKey = Config.privateKey,
        tokenName = "Blade Demo Token",
        tokenSymbol = "GD",
        isNft = true,
        keys,
        decimals = 0,
        initialSupply = 0,
        maxSupply = 250
) { result, error ->
    println(result ?: error)
}

associateToken

Associate token to account. Association fee will be covered by PayMaster, if tokenId configured in dApp

associateToken ( tokenId: String, accountId: String, accountPrivateKey: String, completion: (TransactionReceiptData?, BladeJSError?) -> Unit )

Parameters

NameTypeDescription

tokenId

String

token id to associate. Empty to associate all tokens configured in dApp

accountId

String

account id to associate token

accountPrivateKey

String

account private key

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of TransactionReceiptData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

Blade.associateToken(
    tokenId = "0.0.1337",
    accountId = "0.0.10001",
    accountPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
) { result, error ->
    println(result ?: error)
}

nftMint

Mint one NFT

nftMint ( tokenId: String, supplyAccountId: String, supplyPrivateKey: String, file: String, metadata: Map<String, Any>, storageConfig: NFTStorageConfig, completion: (TransactionReceiptData?, BladeJSError?) -> Unit )

Parameters

NameTypeDescription

tokenId

String

token id to mint NFT

supplyAccountId

String

token supply account id

supplyPrivateKey

String

token supply private key

file

String

image to mint (base64 DataUrl image, eg.: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAA...)

metadata

Map<String,Any>

NFT metadata

storageConfig

NFTStorageConfig

IPFS provider config

completion

(TransactionReceiptData?,BladeJSError?)->Unit

callback function, with result of CreateTokenData or BladeJSError

Returns

TransactionReceiptData - receipt

Example

val tokenId = "0.0.13377"
val supplyAccountId = "0.0.10001"
val supplyPrivateKey = "302d300706052b8104000a032200029dc73991b0d9cd..."
val base64Image = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAAARUlEQVR42u3PMREAAAgEIO1fzU5vBlcPGtCVTD3QIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIXCyqyi6fIALs1AAAAAElFTkSuQmCC"
val metaData = mapOf<String, Any>(
    "name" to "NFTitle",
    "score" to 10,
    "power" to 4,
    "intelligence" to 6,
    "speed" to 10
)
val storageConfig = NFTStorageConfig(
    provider = NFTStorageProvider.nftStorage,
    apiKey = "eyJhbGcsfgrgsrgInR5cCI6IkpXVCJ9.eyJzd5235326ZXRocjoweDfsdfsdfFM0ZkZFOEJhNjdCNjc1NDk1Q2NEREFiYjk0NTE4Njdsfc3MiOiJuZnQtc3RvcmFnZSIsImlhdCI6sdfNDQ2NDUxODQ2MiwibmFt4I6IkJsYWRlUcvxcRLLXRlc3RrdffifQ.t1wCiEuiTvcYOwssdZgiYaug4aF8ZrvMBdkTASojWGU"
)
Blade.nftMint(
    tokenId,
    supplyAccountId,
    supplyPrivateKey,
    file = base64Image,
    metaData,
    storageConfig,
) { result, error ->
    println(result ?: error)
}

cleanup

Method to clean-up webView

cleanup ()

postMessage

Method to handle JS responses. By technical reasons, must be public, but you can skip it :)

postMessage (jsonString: String)

Parameters

NameTypeDescription

jsonString

String

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