Follow the network · Logos Kit

The user picks the network in the wallet (Settings → Network). The SDK follows it: on start, when your app is shown, and every 5 seconds while it's visible.

LogosKit {
    id: kit
    visible: root.visible
    onApiChanged: if (api) root.reset()     // a new network: start over
}

Text { text: kit.chain }                     // "lez:testnet", "lez:preview", "lez:local"

When the network changes, kit.api is rebuilt. Anything your app holds from the old network (session, balances, handles, watchers) is stale:

property int epoch: 0

function reset() {
    epoch++
    if (watcher) watcher.stop()
    session = null; balance = ""; phase = "idle"
}

// Drop answers that arrive after the network changed.
function live(f) {
    var ep = epoch
    return function (v) { if (ep === epoch) return f(v) }
}

kit.api.getWalletBalance(account).then(live(function (b) { balance = b.amount }))

Always read kit.api fresh; never keep a copy.

To pin a network instead (for a demo, say), set followWallet: false and chain. Calls then fail with 4902 UnknownChain while the wallet is elsewhere.

Networks and their programs are listed in Networks.