Sometimes causing system Bluetooth to crash. #556
Comments
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This is how I switch connections. Don't know what's the problem? Timeouts can easily occur after switching connections multiple times. Then the above problems will occur. private ConnectRequest connectRequest;
private void addDevice(BluetoothDevice device) {
new Thread(new Runnable() {
@Override
public void run() {
if (clientManager.isConnected()) {
try {
clientManager.disconnect().await();
clientManager.close();
Thread.sleep(100);
} catch (Exception e) {
e.printStackTrace();
}
}
if (connectRequest != null) {
connectRequest.cancel();
}
connectRequest = clientManager.connect(device)
.useAutoConnect(true)
.retry(3, 0)
.timeout(20 * 1000);
connectRequest.enqueue();
}
}).start();
} |
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Sorry, let me correct the description above. This error does not necessarily occur when the connection times out, because I just tested it and this error also occurs when the connection is in progress, and you can always see it when there is a problem. |
Fly-Felix
changed the title
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So far I have tested 100% of the steps that trigger the problem. Triggering a rescan after connecting to the device or during the connection process can cause the above issues. |
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This is my scanning code. Currently, this kind of thing only happens on some Android 9.0 devices. I tested another Android 7.0 device. It was connecting or connected. It was normal when I rescanned it. With my scan settings, it might be possible. does it matter? private void startScan() {
if (!PermissionUtils.isGpsEnabled(requireContext())) {
showGpsRequestReasonDialog();
return;
}
Log.e(TAG, "startScan: ---");
binding.mSrLayout.setRefreshing(true);
mDeviceAdapter.setNewData(getConnectedDevices());
final BluetoothLeScannerCompat scanner = BluetoothLeScannerCompat.getScanner();
final ScanSettings settings = new ScanSettings.Builder()
.setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
.setReportDelay(5000)
.setUseHardwareBatchingIfSupported(false)
.setUseHardwareFilteringIfSupported(false)
.build();
final List<ScanFilter> filters = new ArrayList<>();
filters.add(new ScanFilter.Builder().setServiceUuid(new ParcelUuid(HEART_RATE_SERVICE_UUID)).build());
scanner.startScan(filters, settings, scanCallback);
scanning = true;
handler.removeCallbacks(stopScanRunnable);
handler.postDelayed(stopScanRunnable, SCAN_DURATION);
} |
This happens when switching connections between multiple heartbeat devices. Please help me take a look, thank you!
I'm using
implementation("no.nordicsemi.android:ble:2.7.4")This is my error log：
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