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Native Demo DApp

Running Locally

First, install the dependencies.

pod install

Then, configure your environment with your Bitski credentials. Open, modify it with your credentials, and rename it to

export SENTRY_DSN="" # leave blank to disable Sentry

At this point you should be able to run the app in the simulator. This will run off our deployed instance of the contract on the Kovan test network.

Modifying the Contract

Our dapp is powered by a Solidity contract that. To edit the contract, see the contracts. folder. After you make changes to the contract, you'll need to compile the contract and deploy it somewhere. Usually it makes sense to build and test on a local blockchain before deploying it publicly.

Start by installing truffle globally.

npm install -g truffle

Then, start truffle's development blockchain.

truffle develop

Once the development blockchain is running, then run the migrations in the dev console:

truffle(develop)> migrate

You can learn more about deploying contracts with truffle here.

Once the contracts are deployed locally, you need to make some edits to the iOS project.

Open LimitedMintableNonFungibleToken.swift and...

  1. Change CurrentNetwork to nil (or the network where your contract is deployed)
  2. Confirm that your truffle server host matches DevelopmentHost
  3. Change contractAddress to the address where it was deployed on this network
  4. Add any additional methods you may have added to the contract to the Swift representation

At this point you should be able to interact with your modified contract locally. Sweet!

Deploying to a real network

Once you have your dapp how you want it, you'll want to deploy it to a public blockchain somewhere. This can be achieved using a local Ethereum node, or Bitski's app wallet feature. To use Bitski's app wallet, you'll need to request access to this feature. Once you have an app wallet, find the client id and secret.

Modify your truffle.js to look like truffle.example.js, filling in the client id and secret. Make sure not to expose these keys anywhere as they give access to your wallet.

Next, you'll want to migrate your contracts to the network you desire:

# mainnet
truffle migrate --network live

# kovan
truffle migrate --network kovan

# rinkeby
truffle migrate --network rinkeby

Finally, make changes within the iOS app to point to your live contract;

Open LimitedMintableNonFungibleToken.swift and...

  1. Change CurrentNetwork to .kovan, .rinkeby, or .mainnet depending on where you deployed it
  2. Change contractAddress to the address where it was deployed on this network