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adapter.md

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Adapter

The adapter is where everything begins and ends. Unlike the platform implementations of the adapter scan, the BLE plugin Scan() method will scan continuously (or restart the scan when the cycle completes) until you dispose of the Scan() token.

General

Monitor and read status of adapter

// current status
CrossBleAdapter.Current.Status

// monitor status changes
CrossBleAdapter.Current.WhenStatusChanged().Subscribe(status => {});

Scan for Devices

var scanner = CrossBleAdapter.Current.Scan().Subscribe(scanResult => 
{
    // do something with it
    // the scanresult contains the device, RSSI, and advertisement packet
        
});

scanner.Dispose(); // to stop scanning

Scan for Devices - Advanced

CrossBleAdapter.Current.Scan(
    new ScanConfig 
    {
        ServiceUuids = { new Guid("<your guid here>") }
    }
)
.Subscribe(scanResult => 
{
})

Open Device Settings

Currently support by iOS8, iOS9, and Android only

if (CrossBleAdapter.Current.CanOpenSettings)
    CrossBleAdapter.Current.OpenSettings();

Change Adapter State (Power on/off)

Supported by Android only

if (CrossBleAdapter.Current.CanChangeAdapterState)
    CrossBleAdapter.Current.SetAdapterState(true); // or false to disable

Listen to scans for decoupled components

With the use of observables everywhere, the option to hook up to the scan result events were taken away. There are good cases to have listening options without actually starting a scan. This is that option!_

BleAdapter.Current.ScanListen().Subscribe(scanResult => {});

Get Connected Devices

var devices = CrossBleAdapter.Current.GetConnectedDevices();
devices.Subscribe(deviceResult =>
{
    foreach (var device in deviceResult)
    {
        // do something
    }   
}    

Extensions

// this essentially recreates the scan cycles like on Android
CrossBleAdapter.Current.ScanInterval(TimeSpan).Subscribe(scanResult => {});

Toggle State of Adapter

// returns true if successful
CrossBleAdapter.Current.ToggleAdapterState();

Open Settings

CrossBleAdapter.Current.OpenSettings();

Get Known Device

Allows you to get a known device by the device ID (GUID/UUID). Note that this ID will be different platform to platform

var device = CrossBleAdapter.Current.GetKnownDevice(Guid);