Questions tagged [android-ble-library]
Android BLE library that solves a lot of Android's Bluetooth Low Energy problems
android-ble-library
11
questions
4
votes
1
answer
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How to test BLE objects on Android?
I am learning to communicate over Bluetooth Low Energy on Android.. Here is an example app
There in there source code are several Bluetooth related objects, which were final classes obviously:
private ...
- 3,062
3
votes
2
answers
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How to read raw data from scanned BLE device?
I am using RxAndroidBle Library for my BLE application.
Like nrfConnect application I want to read RAW data from BLE device.
How to read RAW data from device?
- 781
3
votes
1
answer
557
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Android: Why is BluetoothLeScanner sometimes not discovering any BLE device?
I'm using BluetoothLeScanner to scan for BLE devices, which I start using:
startScan(null, settings.getScanSettings(), scanCallback);
Every once in a while, a call to startScan() does not discover any ...
- 4,225
2
votes
1
answer
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BluetoothGattCharacteristic > write crashes with Android 13
I have the following code that is working perfectly on Android 12 and below, but that is crashing on Android 13 for no apparent reason.
I'm implementing ObservableBleManager and calling:
...
- 350
2
votes
0
answers
485
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Delay in Android BLE StartScan returning a match
We have developed an Android app that tracks vehicle journeys, where each vehicle has a BLE device installed that wakes up when the vehicle is started.
To identify when the user is in the vehicle and ...
- 21
2
votes
0
answers
462
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Get any error code on connect failure due to max connections limit reached on Android BLE
I am connecting to a BLE device and want a specific error code that could help me determine the reason of connection failure.
Scenario i want to cover is for maximum connections limit being reached.
...
2
votes
0
answers
2k
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Bluetooth onCharacteristicWrite not invoked after Status=8 when writing to a characteristic on Android 9
I sometimes get connectionStatus=8 when writing to a characteristic
Writing characteristic 03... (WRITE COMMAND)
gatt.writeCharacteristic(03...)
//6 seconds gap
BluetoothGatt: ...
- 38.1k
1
vote
1
answer
710
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BLE scan callback not invoked on missing permission
I am using Samsung Note 8 (Android 9) and Samsung A50(Android 10).
I am doing BLE scan which needs Bluetooth as well as location permissions (Android >=23). I am NOT providing the Location ...
1
vote
0
answers
155
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Android OS 9.0 , BLE 5.0 specific issue fetching list of services from BluetoothGatt
Developed the following source code for sending message from one Android device to another Android device using BLE:
public static String SERVICE_STRING = "6exxxxxx-xxxx-xxxx-xxxx-xxxxxdcca9e&...
- 259
0
votes
1
answer
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Is the transmission power on Bluetooth Low Energy an Android configurable?
I have a Bluetooth Low Energy Android app project here which works fine so far for most of my android smartphones. I use my BLE weather thermometer in my app anywhere within my room, it works.
Except ...
- 339
0
votes
1
answer
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Ble distance calculation using Time
Is it possible to calculate distance between BLE-BLE or Beacon-BLE device using Time(T) taken on packet received on receiver device with measured power or RSSI value?
Is there any formula for that?
- 973