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Swift SDK Quickstart

Swift SDK Quickstart

This guide will walk you through the process of setting up AptosKit, and fetching data on the Aptos blockchain.

Install the SDK

AptosKit is available as a Swift package. To add it to your project, add the following to your Package.swift file:

Package.swift
dependencies: [
  .package(url: "https://github.com/mcxross/swift-aptos.git", .upToNextMajor(from: <version>))
]

Import the SDK

Import the SDK in your Swift file:

Main.swift
import AptosKit

Create the ClientConfig object

This object is used to configure the client behavior. You can set maxRetries, requestTimeout, and retryOnServerErrors properties.

Main.swift
let config = ClientConfig(
    followRedirects: true,
    agent: "AptosClient",
    likeAgent: nil,
    requestTimeout: 5000,
    retryOnServerErrors: 3,
    maxRetries: 5,
    cache: false,
    proxy: nil
)

Create the AptosSettings object

This object is used to configure the Aptos network connection. You can set network, fullnode, and faucet properties.

Main.swift
let aptosSettings = AptosSettings(
    network: .devnet,
    fullNode: nil,
    faucet: nil,
    indexer: nil,
    client: nil,
    clientConfig: config,
    fullNodeConfig: nil,
    indexerConfig: nil,
    faucetConfig: nil
)

Create the AptosConfig object

Main.swift
let aptosConfig = AptosConfig(settings: aptosSettings)

Create the Aptos object

This object is used to interact with the Aptos blockchain. It serves as the entry point for all interactions with the blockchain.

Main.swift
let aptos = Aptos(config: aptosConfig, graceFull: false)

Fetch the chain ID

Main.swift
let chainId = try await aptos.getChainId()

Congratulations! You have successfully set up the AptosKit SDK and fetched the chain ID from the Aptos blockchain.

Complete Example

Main.swift
 
import SwiftUI
import AptosKit
 
struct ContentView: View {
@State private var chainId: String? = nil
 
var body: some View {
  VStack {
    if let chainId = chainId {
      Text("Chain ID: \(chainId)")
    } else {
      Text("Fetching Chain ID...")
    }
  }
.padding()
    .onAppear {
    fetchChainId()
  }
}
 
private func fetchChainId() {
  DispatchQueue.main.async {
    Task {
      do {
 
        let clientConfig = ClientConfig(
            followRedirects: true,
            agent: "AptosClient",
            likeAgent: nil,
            requestTimeout: 5000,
            retryOnServerErrors: 3,
            maxRetries: 5,
            cache: false,
            proxy: nil
        )
 
        let aptosSettings = AptosSettings(
            network: .devnet,
            fullNode: nil,
            faucet: nil,
            indexer: nil,
            client: nil,
            clientConfig: clientConfig,
            fullNodeConfig: nil,
            indexerConfig: nil,
            faucetConfig: nil
        )
 
        let aptosConfig = AptosConfig(settings: aptosSettings)
        let aptos = Aptos(config: aptosConfig, graceFull: false)
 
        let chainId = try await aptos.getChainId()
        self.chainId = chainId.expect(message: "Failed...")?.stringValue ?? "null"
      } catch {
        print("Failed to get chain ID: \(error)")
        self.chainId = "Error"
        }
      }
    }
  }
}
Swift SDKIndexer