Thank you!

Thank you! You can get the TxPower and RSSI in onScanResult from the ScanResult itself which is a readable form of the advertising package. Minor and Major are also part of such an advertising package. But iBeacon where the Major and Minor is included is just a standard that bases on BLE but not every BLE device has this iBeacon standard. So the Android Bluetooth classes does not provide a minor and major property since it is not always there if a BLE ScanResult comes in. I never needed to access these two values but maybe you have to use some third party library

Danke! Das war dieser hier: JINOU Bluetooth Low Energy 5.0 Beacon/iBeacon mit Sensor, kabelloser Feuchte- und Temperatursensor. Für Android/iOS

did you get his code to build or did you code your own version along with him? I was trying to follow this but after following his steps to add dagger hilt and even cloning his finished project it just won't give me a successful build no matter how i try to fix the gradle file. any suggestions?

Can you help me how to build his original version? With Giraffe version of Android Studio, I have the following build error. e: This version (1.1.0-beta01) of the Compose Compiler requires Kotlin version 1.5.31 but you appear to be using Kotlin version 1.6.21 which is not known to be compatible... So I changed build.gradle file as follows: buildscript { ext { // compose_version = '1.1.0-beta01' compose_version = '1.2.0-rc02' } It compile and build OK. App appears OK but at BLE scanning stage, it stuck and did not show any avaiable device.. Your help will be greatly appreciate..

I found the problem, which was really odd. The call backs were in the wrong place, onCharacteristicRead should be at the end of the main code block. I delete this function onCharacteristicRead, then it reported an error and then auto added the function back into the right location.

@@brendonshaw6412 can i see your code, if you don't mind? my app gets stuck at ""Could not find temp and humidity publisher"

@@KenFuzion Did you manage to fix this?

@@alexkokos5363 nope

Thank you Farid, what do you mean by that?

@@kapps7407 Well I have an app that can update firmware via BLE. But now I have updated the device with a firmware that corrupted the uuid's so I have to clear the gatt table and refresh the services. But I can't think of a nice way to do it.

Sorry I don't know if there is a solution from Android side since its related to your firmware and I am not that deep into configuring embedded systems.

Thank you! Of course you can. When you get your scan results then just start the connection for all devices you want (Or list them to the user first and connect via click on the specific devices). Inside your gattCallback functions you can then check the devices address or name on the received gatt for example to check which connected device is currently triggering the callBack function. I would save the received gatt of each device after connection in some kind of array data struct like List at the beginning to make the device management comfortable.

@@kapps7407 I was able to connect two similar devices but can get data from only one. Does BLE support data retrieval from multiple devices simultaneously?

Yes you should be able to retrieve them. When you establish the connection to those devices then you need to save the gatt somewhere with a corresponding ID or something like this to differentiate later which gatt belongs to which device. And then in your onCharacteristicChanged() Callback you will get a gatt and need to check which gatt it actually is. If you just want to check if the retrieving of both devices works then just connect to them both subscribe to the right characteristics and then in your onCharacteristicChanged both values should come. But be careful when you connect and subscribe to both devices always do it step by step and not two commands at once.

@@kapps7407 thanks. I was able to connect multiple devices and retrieve the data, however, the auto-reconnect function is not working? Does auto-reconnect works for multiple device?

Do you mean the autoConnect Boolean which you pass in the connectGatt(..) function?

If you need more descritions or the modified code please let me know

Update: if I change the order wnen using enableNotification function ever the first is enabled but not the other two characteristics.. perhsps needs time between descrptor writes?

Ok.. it seems clear i am missing to wait the writeDescriptor to finish properly. As a newbie I am still struggling with basics

Yes sure it is !:) you can have multiple gatts. For each ble one

hey! So actually I got past the scanning stage but now I cant figure out how to get data properly... Im using a proxy device from the an App to replicate BLE... I can connect to it but I cannot figure out how to retrieve the data I want - "BLE Scanner" the apps name. If know anything about how to do that... I will be appreciated

Hi Emelie, sorry no I don’t have the code I just bought that sensor on Amazon ..

I am stuck there as well, aby updates?

@@MohannadHaddad3 not really, haven't yet figured it out... I dropped the future for a later release when I get the Bluetooth part figured out

Any updates? About month ago i resolved it then today i checked the feature again and its not working... shame me i could write down what i have changed@@mwigojonathanmark1683

Create a classic Bluetooth socket connection between both Smartphones and then you can use an input and output stream for communication :)

@@kapps7407 Thanks :)

What exactly do you mean by "got stock"? That the "onMtuChanged()" callback does not get triggered?

@@kapps7407 i think thats the problem, because when i run it, it always showing loading icon and text "adjusting mtu space"

Difficult to say without seeing your code. But you can try to leave the requestMtu() command away and just subscribe directly to the notification inside the onServiceDiscovered() callback. Make also sure that you don't execute two commands in the process line at once. They need to be executed after each other.

@@kapps7407 I also have the same problem where the app is "stuck" on "adjusting MTU space". I'm using the same code but have made the change from having two inputs to one. Where in the code can I check if the commands are executed after each other? Great video, thank you for all the help!

@@simonandersson1729 You can apply logs on different positions to check what gets executed when. I recommend you to implement some kind of execution queue which assures that everything happens step by step. But logs should already help I think

I am also getting the same error when attempting to test the app for the second time. (Meaning at around 14 mins when you do)

did u figure it out yet? i am also getting the same error.

You have to update the Kotlin Gradle Plugin Version. Plus, you might have an error of incompatibility with your compose compiler, in that case you have to update the compose compiler version number in the "build.gradle" file accoridng to your Kotlin version (if you don't know which one to choose google "Compose to Kotlin Compatibility Map")