Repository navigation
🐛 If the BLE device disconnects actively, an error will be reported in android #1317
Description
Prerequisites
- I checked the documentation and FAQ without finding a solution
- I checked to make sure that this issue has not already been filed
Expected Behavior
no error
Current Behavior
app exit
Library version
3.5.0
Device
Android
Environment info
System:
OS: macOS 26.1
CPU: (10) arm64 Apple M1 Pro
Memory: 132.69 MB / 16.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 23.11.0
path: /opt/homebrew/bin/node
Yarn:
version: 3.6.4
path: /opt/homebrew/bin/yarn
npm:
version: 10.9.2
path: /opt/homebrew/bin/npm
Watchman:
version: 2025.05.19.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.2
path: /opt/homebrew/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 25.0
- iOS 26.0
- macOS 26.0
- tvOS 26.0
- visionOS 26.0
- watchOS 26.0
Android SDK: Not Found
IDEs:
Android Studio: 2025.1 AI-251.26094.121.2513.14007798
Xcode:
version: 26.0/17A324
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.9
path: /usr/bin/javac
Ruby:
version: 3.4.4
path: /opt/homebrew/opt/ruby/bin/ruby
npmPackages:
"@react-native-community/cli":
installed: 20.0.2
wanted: ^20.0.2
react:
installed: 19.1.1
wanted: 19.1.1
react-native:
installed: 0.82.1
wanted: ^0.82.1
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: true
iOS:
hermesEnabled: Not found
newArchEnabled: falseSteps to reproduce
- BLE device conect
2.close the BLE device power
Formatted code sample or link to a repository
I have fixed this bug:
node_modules/react-native-ble-plx/android/src/main/java/com/bleplx/BlePlxModule.java
line 797: safePromise.reject(null, errorConverter.toJs(error));
first param "null" is not allow
so,change to :
safePromise.reject(error.errorCode.name(), errorConverter.toJs(error));Relevant log output
io.reactivex.exceptions.CompositeException: 2 exceptions occurred.
at io.reactivex.internal.subscribers.LambdaSubscriber.onError(LambdaSubscriber.java:82)
at io.reactivex.internal.operators.flowable.FlowableDoOnEach$DoOnEachSubscriber.onError(FlowableDoOnEach.java:111)
at io.reactivex.internal.operators.flowable.FlowableDoOnLifecycle$SubscriptionLambdaSubscriber.onError(FlowableDoOnLifecycle.java:85)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$BaseObserveOnSubscriber.checkTerminated(FlowableObserveOn.java:209)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$ObserveOnSubscriber.runAsync(FlowableObserveOn.java:399)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$BaseObserveOnSubscriber.run(FlowableObserveOn.java:176)
at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
at java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:307)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
at java.lang.Thread.run(Thread.java:1023)
ComposedException 1 :
com.polidea.rxandroidble2.exceptions.BleDisconnectedException: Disconnected from MAC='XX:XX:XX:XX:XX:XX' with status 0 (GATT_SUCCESS)
at com.polidea.rxandroidble2.internal.connection.RxBleGattCallback$2.onConnectionStateChange(RxBleGattCallback.java:81)
at android.bluetooth.BluetoothGatt$1$4.run(BluetoothGatt.java:299)
at android.bluetooth.BluetoothGatt.runOrQueueCallback(BluetoothGatt.java:864)
at android.bluetooth.BluetoothGatt.-$$Nest$mrunOrQueueCallback(Unknown Source:0)
at android.bluetooth.BluetoothGatt$1.onClientConnectionState(BluetoothGatt.java:294)
at android.bluetooth.IBluetoothGattCallback$Stub.onTransact(IBluetoothGattCallback.java:128)
at android.os.Binder.execTransactInternal(Binder.java:1286)
at android.os.Binder.execTransact(Binder.java:1244)
Caused by: java.lang.NullPointerException: Parameter specified as non-null is null: method com.facebook.react.bridge.PromiseImpl.reject, parameter code
at com.facebook.react.bridge.PromiseImpl.reject(Unknown Source:2)
at com.bleplx.utils.SafePromise.reject(SafePromise.java:25)
at com.bleplx.BlePlxModule$41.onError(BlePlxModule.java:797)
at com.bleplx.adapter.utils.SafeExecutor.error(SafeExecutor.java:30)
at com.bleplx.adapter.BleModule.lambda$safeMonitorCharacteristicForDevice$45(BleModule.java:1485)
at com.bleplx.adapter.BleModule.$r8$lambda$JVuqIGnSfaxzZFLoyHm91xQUhdI(Unknown Source:0)
at com.bleplx.adapter.BleModule$$ExternalSyntheticLambda3.accept(D8$$SyntheticClass:0)
at io.reactivex.internal.subscribers.LambdaSubscriber.onError(LambdaSubscriber.java:79)
at io.reactivex.internal.operators.flowable.FlowableDoOnEach$DoOnEachSubscriber.onError(FlowableDoOnEach.java:111)
at io.reactivex.internal.operators.flowable.FlowableDoOnLifecycle$SubscriptionLambdaSubscriber.onError(FlowableDoOnLifecycle.java:85)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$BaseObserveOnSubscriber.checkTerminated(FlowableObserveOn.java:209)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$ObserveOnSubscriber.runAsync(FlowableObserveOn.java:399)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$BaseObserveOnSubscriber.run(FlowableObserveOn.java:176)
at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
at java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:307)
2025-12-04 14:30:47.551 23378-23645 AndroidRuntime com.zgcqnx.pe E at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
at java.lang.Thread.run(Thread.java:1023)
ComposedException 2 :
java.lang.NullPointerException: Parameter specified as non-null is null: method com.facebook.react.bridge.PromiseImpl.reject, parameter code
at com.facebook.react.bridge.PromiseImpl.reject(Unknown Source:2)
at com.bleplx.utils.SafePromise.reject(SafePromise.java:25)
at com.bleplx.BlePlxModule$41.onError(BlePlxModule.java:797)
at com.bleplx.adapter.utils.SafeExecutor.error(SafeExecutor.java:30)
at com.bleplx.adapter.BleModule.lambda$safeMonitorCharacteristicForDevice$45(BleModule.java:1485)
at com.bleplx.adapter.BleModule.$r8$lambda$JVuqIGnSfaxzZFLoyHm91xQUhdI(Unknown Source:0)
at com.bleplx.adapter.BleModule$$ExternalSyntheticLambda3.accept(D8$$SyntheticClass:0)
at io.reactivex.internal.subscribers.LambdaSubscriber.onError(LambdaSubscriber.java:79)
at io.reactivex.internal.operators.flowable.FlowableDoOnEach$DoOnEachSubscriber.onError(FlowableDoOnEach.java:111)
at io.reactivex.internal.operators.flowable.FlowableDoOnLifecycle$SubscriptionLambdaSubscriber.onError(FlowableDoOnLifecycle.java:85)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$BaseObserveOnSubscriber.checkTerminated(FlowableObserveOn.java:209)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$ObserveOnSubscriber.runAsync(FlowableObserveOn.java:399)
at io.reactivex.internal.operators.flowable.FlowableObserveOn$BaseObserveOnSubscriber.run(FlowableObserveOn.java:176)
at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
at java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:307)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
at java.lang.Thread.run(Thread.java:1023)Additional information
No response
Activity
ademhatay commentedon Dec 4, 2025
Same error. My Android app closes when any device is disconnected. with version 3.5.0
i7soft commentedon Dec 4, 2025
I have fixed this bug:
node_modules/react-native-ble-plx/android/src/main/java/com/bleplx/BlePlxModule.java
line 797: safePromise.reject(null, errorConverter.toJs(error));
first param "null" is not allow
so,change to :
safePromise.reject(error.errorCode.name(), errorConverter.toJs(error));
yangwudong commentedon Dec 5, 2025
I got the same error and fixed by changing
SafePromise`diff --git a/node_modules/react-native-ble-plx/android/src/main/java/com/bleplx/utils/SafePromise.java b/node_modules/react-native-ble-plx/android/src/main/java/com/bleplx/utils/SafePromise.java
index 0203473..5e06c2a 100644
--- a/node_modules/react-native-ble-plx/android/src/main/java/com/bleplx/utils/SafePromise.java
+++ b/node_modules/react-native-ble-plx/android/src/main/java/com/bleplx/utils/SafePromise.java
@@ -22,7 +22,7 @@ public class SafePromise {
public void reject(String code, String message) {
if (isFinished.compareAndSet(false, true)) {
}
`
sfourdrinier commentedon Dec 18, 2025
@yangwudong check against my fork and let me know if this is fixed or not there.
https://github.com/sfourdrinier/react-native-ble-plx
Ruud-BMair commentedon Jan 6, 2026
This looks like the same bug as is discussed in #1303, might be worth checking out.
bwindsor commentedon Mar 7, 2026
I think this is now fixed in #1329 (released with 3.5.1)
p-dot-max commentedon May 8, 2026
This is resolved by #1329 in 3.5.1. I tested it locally and everything is working as expected now — no app crashes were observed.
I think this PR/issue can be closed.