Find Device

Request that a connected device start its firmware-defined locate-device indication. This API locates the represented device; it does not scan for nearby Bluetooth devices.

Prerequisites

Before calling this API, ensure:

• The device is connected and ready
• The device supports the DeviceFindAPI protocol

API Reference

Framework

AIBuds.xcframework

Import

Swift

Swift

import AIBuds

Objective-C

Objective-C

#import <AIBuds/AIBuds-Swift.h>
#import <AIBuds/AIBuds.h>

Protocol

The findDevice method is defined in DeviceFindAPI.

Swift

Swift

/// Controls the locate-device indication on a connected device.
///
/// This API operates on the device represented by the conforming object. It
/// does not perform Bluetooth discovery or scan for nearby devices. The
/// indication used to locate the device, such as sound, vibration, or another
/// firmware-defined behavior, depends on the device implementation.
///
/// A successful completion from `findDevice(_:)` means the start command was
/// accepted; it does not mean the device has been physically located. Observe
/// `DeviceDelegate.deviceDidReportFound(_:)` or
/// `SDKDelegate.deviceDidReportFound(_:)` when the device supports reporting
/// that it has been found.
public protocol DeviceFindAPI: DeviceAPI {
    /// Requests that the connected device start its locate-device indication.
    ///
    /// The completion reports whether the command was accepted and executed by
    /// the device. It does not report whether the user has located the device.
    /// Use `DeviceDelegate.deviceDidReportFound(_:)` or the corresponding
    /// `SDKDelegate` callback for a device-originated found event.
    /// - Parameters:
    ///   - completion: Called when command processing completes.
    ///     - success: `true` when the device accepted the command; otherwise,
    ///       `false`.
    ///     - error: The command or communication error, or `nil` on success.
    func findDevice(_ completion: AIBudsCompletionHandler?)
}

Objective-C

Objective-C

/// Controls the locate-device indication on a connected device.
///
/// This API operates on the device represented by the conforming object. It
/// does not perform Bluetooth discovery or scan for nearby devices. A
/// successful completion means command acceptance, not physical location.
@protocol AIBudsDeviceFindAPI <AIBudsDeviceAPI>
/// Requests that the connected device start its locate-device indication.
///
/// The completion reports command processing. A supported device reports
/// the terminal found event separately through the device or SDK delegate.
/// - Parameters:
///   - completion: Called when command processing completes.
///     - success: `true` when the device accepted the command; otherwise,
///       `false`.
///     - error: The command or communication error, or `nil` on success.
- (void)findDeviceWithCompletion:(AIBudsCompletionHandler _Nullable)completion;
@end

Instance Method

Requests that the connected device start its locate-device indication.

Swift

Swift

/// Requests that the connected device start its locate-device indication.
///
/// The completion reports whether the command was accepted and executed by
/// the device. It does not report whether the user has located the device.
/// Use `DeviceDelegate.deviceDidReportFound(_:)` or the corresponding
/// `SDKDelegate` callback for a device-originated found event.
/// - Parameters:
///   - completion: Called when command processing completes.
///     - success: `true` when the device accepted the command; otherwise,
///       `false`.
///     - error: The command or communication error, or `nil` on success.
func findDevice(_ completion: AIBudsCompletionHandler?)

Objective-C

Objective-C

/// Requests that the connected device start its locate-device indication.
///
/// The completion reports command processing. A supported device reports the
/// terminal found event separately through the device or SDK delegate.
/// - Parameters:
///   - completion: Called when command processing completes.
///     - success: `true` when the device accepted the command; otherwise,
///       `false`.
///     - error: The command or communication error, or `nil` on success.
- (void)findDeviceWithCompletion:(AIBudsCompletionHandler _Nullable)completion;

Parameters

Parameter	Type	Description
completion	AIBudsCompletionHandler?	Optional handler called when command processing completes.

Callback Parameters:

Name	Type	Description
success	Bool / BOOL	true when the device accepted the command; otherwise false.
error	NSError?	The command or communication error, or nil on success.

Return Value

This method does not return a value directly. Its completion reports command processing, not whether the user has physically located the device.

Usage Examples

Swift

Swift

import AIBuds

final class DeviceManager {
    weak var device: DeviceConvertible?

    func startFindingDevice() {
        guard let device = device as? DeviceFindAPI else {
            print("Device does not support finding")
            return
        }

        device.findDevice { success, error in
            guard success else {
                print("Failed to start finding: \(error?.localizedDescription ?? "Unknown error")")
                return
            }

            print("Locate-device command accepted")
        }
    }
}

Objective-C

Objective-C

#import <AIBuds/AIBuds-Swift.h>
#import <AIBuds/AIBuds.h>

id<AIBudsDeviceFindAPI> device = (id<AIBudsDeviceFindAPI>)self.device;
if (![device conformsToProtocol:@protocol(AIBudsDeviceFindAPI)]) {
    NSLog(@"Device does not support finding");
    return;
}

[device findDeviceWithCompletion:^(BOOL success, NSError *_Nullable error) {
    if (!success) {
        NSLog(@"Failed to start finding: %@", error.localizedDescription ?: @"Unknown error");
        return;
    }

    NSLog(@"Locate-device command accepted");
}];

Observe the Device-Found Event

When supported by the device, deviceDidReportFound is the distinct, device-originated terminal event:

Swift

Swift

/// Called when the device reports that it has been found.
///
/// This is distinct from `findDevice(_:)` completion, which only reports
/// command processing.
func deviceDidReportFound(_ device: DeviceConvertible) {
    DispatchQueue.main.async {
        self.showDeviceFoundState()
    }
}

Objective-C

Objective-C

/// Called when the device reports that it has been found.
///
/// This is distinct from the find command completion, which only reports
/// command processing.
- (void)deviceDidReportFound:(id<AIBudsDeviceConvertible>)device {
    dispatch_async(dispatch_get_main_queue(), ^{
        [self showDeviceFoundState];
    });
}

Error Handling

Check success before showing that the command was accepted, and use error for command or communication failures. Do not present successful command processing as “device found”; wait for the separate found event when the device supports it.

Best Practices

1. Check Protocol Conformance: Verify DeviceFindAPI support before calling the method.
2. Use Precise UI State: Distinguish “command accepted” from “device found.”
3. Provide a Stop Action: Make stopFindDevice(_:) available after starting the indication.
4. Observe the Found Event: Implement the device or SDK delegate callback when supported.
5. Update UI on the Main Queue: Dispatch UIKit updates from completions and delegate callbacks to the main queue.

Notes

• This API controls an already-connected device and does not discover or scan for devices.
• The public API defines a locate indication but does not prescribe how a device presents it.
• Sound, vibration, duration, and volume behavior can be device-specific.
• Find-iPhone is the opposite direction; see Report iPhone Found.