iOS SDK - API and Configuration
The SDK receives configuration remotely from Nodle servers as well as statically using API calls. The static configuration always takes precedence over the remote configuration.
Nodle SDK Api
To interact with the SDK you need to call the Nodle.sharedInstance
method that will give you an Instance of the INodle class. The following are all the public methods for the Nodle API.
Swift
import UIKit
import SwiftCBOR
import SwiftProtobuf
import NodleSDK
import SQLite
import CoreLocation
import CoreBluetooth
let nodle = Nodle.sharedInstance
start
public func start(public_key: String)
Immediately starts the Nodle SDK
Parameters | |
---|---|
public_key | The application public_key created in Step 1 |
Example:
Swift
Nodle().start("ss58:public_key")
isStarted
public func isStarted() -> Bool
Checks if the Nodle SDK is started
Parameters | |
---|---|
boolean | true if the Nodle SDK is started, false otherwise |
Example:
Swift
let sdkStarted = Nodle().isStarted()
isScanning
public func isScanning() -> Bool
Checks if the Nodle SDK is currently scanning the BLE neighborhood. This is useful if you want to show that the SDK is working.
Parameters | |
---|---|
boolean | true if the Nodle SDK is scanning, false otherwise |
Example:
Swift
let sdkScanning = Nodle().isScanning()
stop
public func stop()
Immediately stops the Nodle SDK
Example:
Swift
Nodle().stop()
clear
public func clear()
Clear any configs by Nodle SDK
Example:
Swift
Nodle().clear()
getVersion
public func getVersion() -> String
Get the version identifier of the Nodle SDK.
Parameters | |
---|---|
String | the current version of the Nodle SDK |
Example:
Swift
let nodleSdkVersion = Nodle().getVersion()
getEvents
public func getEvents() -> NodleEvent
Get the raw bluetooth events from the Nodle SDK with the following type:
Returns | |
---|---|
NodleEventType.BlePayloadEvent | Returns NodleBluetoothScanRecord |
NodleEventType.BleStartSearching | Returns NodleBluetoothEvent |
NodleEventType.BleStopSearching | Returns NodleBluetoothEvent |
NodleEventType.BeaconPayloadEvent | Returns NodleBeaconScanRecord |
NodleEventType.BeaconStartSearching | Returns NodleBeaconEvent |
NodleEventType.BeaconStopSearching | Returns NodleBeaconEvent |
Example of available return event classes below:
Returns | |
---|---|
NodleBluetoothScanRecord | Raw Bluetooth Record from Nodle SDK |
NodleBluetoothEvent | Bluetooth Event when the SDK start/stop |
NodleBeaconScanRecord | Raw Beacon Record from Nodle SDK |
NodleBeaconEvent | Beacon Event when the SDK start/stop |
Example:
NodleSDK - Swift
nodle.getEvents { event in
// collect the NodleEvent events by chosing a type
switch event.type {
case .BlePayloadEvent:
let payload = event as! NodleBluetoothRecord
print("Bluetooth payload available \(payload.device)")
break
case .BleStartSearching:
print("Bluetooth started searching")
break
case .BleStopSearching:
print("Bluetooth stopped searching")
break
@unknown default:
print("Failed to get any event")
}
}
NodleSDKWCB - Swift
nodle.getEvents { event in
// collect the NodleEvent events by chosing a type
switch event.type {
case .BeaconPayloadEvent:
let payload = event as! NodleBeaconRecord
print("iBeacon payload available \(payload.identifier) major: \(payload.major) minor: \(payload.minor) delivered at \(Date())")
break
case .BeaconStartSeaching:
print("iBeacon started searching \(Date())")
break
case .BeaconStopSearching:
print("iBeacon stop searching \(Date())")
break
@unknown default:
print("Failed to get any event")
}
}
The following data can be collected from the NodleEventType
:
Key | Description | Default Value |
---|---|---|
type | returns nodle bluetooth event type | NodleEventType |
The following data can be collected from the NodleBluetoothScanRecord
:
Key | Description | Default Value |
---|---|---|
device | returns device unique identifier | String |
rssi | returns received signal strength indicator | Int |
bytes | returns raw bytes of the record | [UInt8] |
manufacturerSpecificData | returns the manufacturer specific data associated with the manufacturer id | [Int : [UInt8]] |
servicesUuids | returns an array of services UUID's within the advertisement | Array<CBUUID> |
The following data can be collected from the NodleBluetoothEvent
:
Key | Description | Default Value |
---|---|---|
scanning | returns bluetooth scanning state | Bool |
The following data can be collected from the NodleBeaconScanRecord
:
Key | Description | Default Value |
---|---|---|
identifier | returns device unique identifier | String |
major | returns major value of the beacon | NSNumber |
minor | returns minor value of the beacon | NSNumber |
proximity | returns proximity value of the beacon | Int |
accuracy | returns accuracy value of the beacon | Double |
rssi | returns received signal strength value of the beacon | Int |
The following data can be collected from the NodleBeaconEvent
:
Key | Description | Default Value |
---|---|---|
scanning | returns beacon scanning state | Bool |
The table shows rational range for the beacon devices that are found:
Key | Description | Range |
---|---|---|
proximity | Int | unknown = 0, immediate = 1, near = 2, far = 3 |
accuracy | Double | unknown 0, 0 - 0.5 immediate, 0.5 - 3 near, 3+ far in meters |
rssi | Int | -128 |
registerNodleBackgroundTask
public func registerNodleBackgroundTask()
Register the Nodle SDK background task
Example:
Swift
Nodle().registerNodleBackgroundTask()
scheduleNodleBackgroundTask
public func scheduleNodleBackgroundTask()
Schedules the Nodle SDK background task
Example:
Swift
Nodle().scheduleNodleBackgroundTask()
config
public func config(path: Path)
public func <T> config(key: String, value: T)
configure the SDK either by supplying a json file located in ../config.json or by directly configuring a key. An example of a json configuration look like this:
{
"ble": {
"scan": {
"duration-msec": 10000,
"interval-msec": 90000,
"interval-x-factor": 1
}
},
"dtn": {
"use-cellular": false
}
}
the following are the table of all the keys available and their description:
Key | Description | Default Value |
---|---|---|
ble.scan.duration-msec | duration of a single ble pass in milliseconds. Longer scan increase battery consumption but gives more reward. | 10000 |
ble.scan.interval-msec | wait time between two ble pass in milliseconds. Longer period reduce battery consumption but gives less reward | 90000 |
ble.scan.interval-x-factor | multiplier for the ble scan interval above. | 1 |
dtn.use-cellular | if true, the cellular connexion will be used. if false, only wifi connection will be used. | true |
cron.ios-bg-mode | If specified, the SDK will run in the specific background mode that it is selected. | 2 |
cron.ios-bg-mode-distance-meters | If specified, the SDK will trigger background scans for Normal mode depending on the meters that are specified with this option. | 20 |
there is another table that will allow you to configure our SDK background modes. There are 4 available modes: NONE, ECO, NORMAL, AGGRESSIVE for the NodleSDK please check them in the table below:
Key | Description | Default Value |
---|---|---|
NONE | The SDK will run in foreground mode only. You don't need to give allowAlways permissions. WhileInUse is enough for this mode. You may wish to only use Background Tasks for this mode. | 0 |
AGGRESSIVE | The SDK will run in aggressive mode that require all permissions we requested to allowAlways. Then you have to enable Background Modes as well. There is no need to register Background Tasks for this mode. This mode will work even when the phone is with locked screen. This mode will keep the SDK awake without suspending it. Once terminated it won't be able to restore it. | 1 |
NORMAL | The SDK will run in normal mode that require all permissions we requested to allowAlways since it still runs in the background. Then you have to enable Background Modes as well. This mode will be a bit less aggressive than the previous mode. It will trigger when there are location changes. You can change the distance with the config option. You may wish to combine Background Tasks for this mode. This mode will work even when the phone is with locked screen. This mode will be able to awake the SDK after it's fully suspended. Once terminated it won't be able to restore it. | 2 |
ECO | The SDK will run in eco mode that require all permissions we requested to allowAlways since it still runs in the background. Then you have to enable Background Modes as well. This mode will provide a very limited background work. It will trigger really rarely in the background. And when there are location changes. You may wish to combine Background Tasks for this mode. This mode will work even when the phone is with locked screen. This mode will be able to awake the SDK after it's fully suspended and even terminated. | 3 |
Example:
Swift
import UIKit
import SwiftCBOR
import SwiftProtobuf
import NodleSDK
import SQLite
import CoreLocation
import CoreBluetooth
// load the json config located in your app folder config.json
let bundle = Foundation.Bundle(identifier: "io.nodle.apptest.AppTest")
// path for the file in the project
let path = bundle!.path(forResource: "config", ofType: "json")
// or you can manually set the entries, for instance
Nodle().config("dtn.use-cellular", false);
// background mode selected - foreground only
Nodle().config("cron.ios-bg-mode", 0);
// then proceed to start Nodle
Nodle().start()