macOS

Observe Screen Locking in macOS

In Quids, similar to 1Password, we lock the app when your Mac locks.

There are two notifications sent via the DistributedNotificationCenter. One when the screen is locked and the other when it is unlocked. I couldn't find any predefined variables so created this Notification.Name extension:

internal extension Notification.Name
{
    static let screenIsLocked = Notification.Name("com.apple.screenIsLocked")
    static let screenIsUnlocked = Notification.Name("com.apple.screenIsUnlocked")
}

Then all that is left to do is register an object as an observer:

DistributedNotificationCenter.default().addObserver(self, selector: #selector(...), name: Notification.Name.screenIsLocked, object: nil)

Send Money with the Coinbase Swift SDK


Photo by Thought Catalog / Unsplash

I recently added the ability to send money using the Coinbase Swift SDK that we're building alongside Quids.

When going through the OAuth flow you need to add the CoinbaseAPIClient.Scope.createTransactions to your list of scopes:

let authScopes: [CoinbaseAPIClient.Scope] = [
    .readAccounts,
    .readTransactions,
    .createTransactions(sendLimit: 500.0, currencyCode: "USD", period: .day)
]

Then once you have the required permission you will need to build a SendMoney request and pass that to your CoinbaseAPIClient:

let request = CoinbaseAPIClient.SendMoney(to: ethAddress, amount: 2.5, currencyCode: "ETH")

coinbase.send(money: request, from: accountID, twoFactorCode: nil) { (transaction, errors) in
    // ...
}

You'll notice this function can also take a 2FA code. If Coinbase returns a CoinbaseAPIClient.APIError.twoFactorRequired error, you should ask your user for a 2FA code and then re-call the send money function with the 2FA code.

Here is an example of how we're doing this in Quids:
Screen-Shot-2018-06-25-at-07.02.56