When I am testing with beacon emulator I can turn bluetooth on and off to simulate a user enter and exit the beacon area. However this is not possible when testing with real beacons since there are no switches to enable or disable them. Therefore, is it possible to simulate this by turning bluetooth on and off in the actual iphone? Is the result the same? Does turning on bluetooth result in an immediate bluetooth scan by iOS?
You can use your mac to generate ibeacons if it have bluetooth 4.0 (https://github.com/mttrb/BeaconOSX) and with that project you can enable or disable the virtual beacon. You can also use another idevice to generate a ibeacon signal.
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The issue is when my flutter app is in bluetooth scanning mode it is detecting all the devices so i need only smartphone to detect using my app and other devices like smarTv,smartwatch and bands and headphones i need to reject them in my flutter app
Unfortunately there isn't a way to conclusively detect only smartphones and display them. When advertising with BLE, many devices use the "GAP Appearance" flag to specify their type (e.g. phone, computer, tag, clock, etc), but not all devices follow this convention, and many devices don't use this tag, so you are bound to display devices that are not smartphones.
For more information, have a look at the following links:-
How Bluetooth Low Energy Works: Advertisement
BLE Specification Generic Access Profile
BLE Specification GAP Appearance
I hope this helps.
I want to know if it is possible to build this kind of bluetooth application on iOS platform.
There are two devices:
1. bluetooth device with installed camera module
- This device only has a camera module, a memory, and a bluetooth module.
2. iOS device. (sleeping - with screen black, possibly locked)
The bluetooth device can be used to do the following:
1. Press a button to take a picture
2. Send the picture via bluetooth to the Iphone,
3. Iphone wakes up, sends the picture to a server.
The key points that I'm curious about is
1. Is is possible to wake up the device with a bluetooth signal,
2. Is it possible to launch an application/wake up an application with a bluetooth signal so that it can process information/send it?
Also, if this functionality is possible, then can it be done with classic bluetooth module, without registering for the MFI program? or do I have to use BLE?
Techniques to discover the device:
1. Core Bluetooth Framework: only works for Bluetooth low energy i.e BLE.
2. EAaccessory Framework: Apple provides an API called External Accessory Framework, which can be used to interact with paired Bluetooth devices or device connected through wired, for which we have to fix the apple connector at the base of the device.
3. Gamekit Framework: if we are using game kit framework then it is necessary that the application is running in foreground in both of the device i.e if the application is in background then it is not possible to pear the device and second thing if we are using game kit framework then there is a limit of about 90k per 'send' ,so if our file is larger then 90k then we have to break it up.
If you have any queries then you can ask..
I know some basic about iOS programming, now i want to connect my app to another non iphone device e.g. connecting to a bluetooth device that can control a light bulb on and off, or control any furnitures.
My question is, besides iOS xcode, what kind of program i need to learn in order to achieve my goal?
Is there any sources that i can learn from it?
For Bluetooth Low Energy devices, you can use the CoreBluetooth framework to access them.
For Classic Bluetooth devices or accessories that make use of the Dock connector, the protocols are not open, and joining the Made for iPhone (MFi) program is required. I do not suggest this for beginning.
My suggestion is to buy for example a Polar Heart Rate Belt that supports Bluetooth Low Energy. These use standard protocols. Sample code is available from Apple that shows how to read out the heart rate from such a device.
As soon as you have mastered the heart rate monitor example, a next step would be to acquire a programmable Bluetooth Low Energy chip (however, often, the development tools for those are rather expensive!). Those chips can be programmed with custom profiles to listen for Bluetooth Low Energy connections and then performing defined operations (lighting a LED) when writes to characteristics occur. So, you are not limited to heart rate monitors and similar devices.
Keywords that you can search for: GATT protocol, Bluetooth Low Energy, CoreBluetooth.
I know that it's a steep learning curve for beginners, but the area is pretty new. However, I can assure you that it's a fun area.
I also think that you should look in to embedded C programming for the slave device (Heart Rate Monitor)
You could get a tod Smart Beacon Development kit for ~$150 and then use BGScript to code the firmware to control the BLE device from your phone or pc. todhq.com for more info.
I'm developing blog speaker app.
I wanna pause the audio when bluetooth is disabled like iPod app. I thought it's not possible without using private api after reading this.
Check if Bluetooth is Enabled?
But, my customer told me that Rhapsody and DI Radio apps both support it.
Then I found iOS5 has Core Bluetooth framework.
https://developer.apple.com/library/ios/documentation/CoreBluetooth/Reference/CoreBluetooth_Framework/CoreBluetooth_Framework.pdf
CBCentralManagerStatePoweredOff status seems like the one.
But, the description says this api only supports Bluetooth 4.0 low energy devices.
Did anyone try doing the same thing?
I want to support current popular bluetooth headsets, or bluetooth enabled steering wheel on the car. I don't know if it's worth trying when it only supports some brand new bluetooth.
For audio, focusing on Bluetooth specifically sounds like the wrong approach.
I think what you're looking for is Handling Audio Hardware Route Changes.
You'll notice that all of the following cause the the built-in iPod app to pause:
Bluetooth device is removed (possibly because bluetooth has been disabled).
Headphones are unplugged.
Device is removed from docking station.
You get all that correct behavior when you use the Audio Session API.
On BLE you will get an update on the manager containing the state:
enum {
CBCentralManagerStateUnknown = 0, // State unknown,
update imminent.
CBCentralManagerStateResetting, // The connection with the system service was momentarily lost,
update imminent.
CBCentralManagerStateUnsupported, // The platform doesn't support Bluetooth Low Energy.
CBCentralManagerStateUnauthorized, // The app is not authorized to use Bluetooth Low Energy.
CBCentralManagerStatePoweredOff, // Bluetooth is currently powered off.
CBCentralManagerStatePoweredOn, // Bluetooth is currently powered on and available to use.
};
which you can check on the mandatory callback with e.g
centralManager:didUpdateState...{
if ([manager state] == CBCentralManagerStatePoweredOff)
{
[musicPlayer pause]
}
}
in my application i'm trying to turn on a bluetooth device from the iphone. The bluetooth device is one of those you put in your ear to talk without holding the phone. I wonder if it's possible to turn on the bluetooth wirelessly from my application.
No, because the bluetooth device would have to be ON to receive the signal to turn ON.
The user manages paired bluetooth devices. If you just need input, see: Can the iPhone 3.0 SDK provide full access to Bluetooth devices (headsets)?.