core-bluetooth

I'd appreciate if someone with iOS bluetooth experience could show me how to take pictures on other iOS devices using bluetooth classes. This app lets users login/register and afterwards take and upload pics. http://www.raywenderlich.com/13511/how-to-create-an-app-like-instagram-with-a-web-service-backend-part-12 My goal is to, on tap of a user photo in the apps uiscrollview (which displays all uploaded photos), activate the snapStillImage method of AVFoundation below. //this code takes a picture - (void)snapStillImage //this takes a picture via [self snapStillImage] in viewDidLoad { dispatch

My Device "A" is connected with my iPhone through BT and then by using nRF Connect BLE is also connected with Device "A". Through nRF Connect I am initiating the pillion connection between Device "A" and Device "B". So finally Pillion is activited and working properly for 10 Second and then Device "A" is disconnected with iPhone (Only BT). But Pillion is working fine. So the problem in why BT of Device "A" is disconnected when Device "A" try to connect with Device "B". In case of android this is working fine and Device "A" is Conncected with Andorid as well as Device "A" is connected with

I recently downloaded Xcode 8.0 and trying to run my previous project which uses core bluetooth. I have enabled Use Legacy Swift Language Version in build setting for compatibility in swift 2.3 everything works, but one Issue occured, func centralManagerDidUpdateState(central: CBCentralManager) { print("state is \(central.state.rawValue)") if (central.state == CBCentralManagerState.PoweredOn) { self.centralManager?.scanForPeripheralsWithServices([serviceUUID], options: nil) } else { // do something like alert the user that ble is not on } } previously central.state would return

After scanning for the BLE device, I call the below method: - (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI and receive the following advertisement data as such: { kCBAdvDataManufacturerData = <ffff0215 cf6d4a0f ..... adf2f491 ... ... > } How can I decode the data and access its information? It seems that you are expecting this advertising packet to be decodable as iBeacon, but it is not. The full bytes listed in comments are: ff ff 02 15 e8 4a 40 af 7b 8d e8 8d 4a 7b

I have to following scenario: My app requests and receives data from an BLE peripheral (a glucometer). It it possible that the user has another app (from another developer) installed, that also communicates with the peripheral. I noticed that my app receives characteristic notifications for requests that where initiated by the other app. This causes my app to receive some data twice. Is there any way to distinguish between responses to my request and responses that are caused by another app? Or how can I handle it? While the stack obviously knows which app a certain (read, write) response

I have an android client that functions as a central and have an app on my MAC (peripheral) that this central connects to and sends data. At this point, I need to wait almost 100ms after I call writeCharacteristic(..) to receive the onCharacteristicWrite(..) callback. I am sending strings. If I send smaller strings, the throughput is great (understandably). When the string contains about 200 characters and I send 20 byte chunks, it takes almost a second before the entire string is seen at the peripheral. When I set the write type to NO_RESPONSE before writing the characteristic, I see no data

I want to use CoreBluetooth API within iOS keyboard extension (custom keyboard). However, the state for the CBCentralManager is unsupported. The device I use is iPhone 6. It works fine inside the container app. Does this mean that the CoreBluetooth API cannot be used inside the keyboard extension? You will need to set RequestOpenAccess to YES in your extension's plist under NSExtension > NSExtensionAttributes. Setting this to YES allows the extension to access network resources. Bluetooth is considered a network resource so you will get CBManagerStateUnsupported when RequestOpenAccess is NO.

I am using Core Bluetooth Framework in my app. I know how to scan for peripherals and getting values from it.(like Heart Rate Monitor) But what I want is to retrieve the surrounding iPhone Devices list that supports BLE 4.0 and Bluetooth Enabled ones. I referred below links.. Uses IOBluetooth Framework Uses CoreBluetooth For Getting Peripherals not the Devices List - (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI { // I'm not sure how to make this work NSLog (@