[英]Android BLE is NOT connecting again after BLE device timeout [Using RxAndroidBle ]
我正在使用RxAndroidBle库在Android BLE上工作。 如果没有交互,则BLE设备的超时时间为5分钟。 即如果5分钟内没有任何读/写操作,设备将自动断开连接。 发生超时断开连接时,我收到BleGattException。
W/System.err: BleGattException{macAddress=24:71:89:FE:A0:88, status=19 (0x13 -> https://android.googlesource.com/platform/external/bluetooth/bluedroid/+/android-5.1.0_r1/stack/include/gatt_api.h), bleGattOperationType=BleGattOperation{description='CONNECTION_STATE'}}
W/System.err: at com.polidea.rxandroidble.internal.connection.RxBleGattCallback.propagateStatusErrorIfGattErrorOccurred(RxBleGattCallback.java:233)
W/System.err: at com.polidea.rxandroidble.internal.connection.RxBleGattCallback.access$200(RxBleGattCallback.java:35)
W/System.err: at com.polidea.rxandroidble.internal.connection.RxBleGattCallback$3.onConnectionStateChange(RxBleGattCallback.java:86)
W/System.err: at android.bluetooth.BluetoothGatt$1.onClientConnectionState(BluetoothGatt.java:228)
W/System.err: at android.bluetooth.IBluetoothGattCallback$Stub.onTransact(IBluetoothGattCallback.java:70)
W/System.err: at android.os.Binder.execTransact(Binder.java:453)
W/BluetoothGatt: Unhandled exception in callback
rx.exceptions.OnErrorFailedException: Error occurred when trying to propagate error to Observer.onError
at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:194)
at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.internal.operators.OperatorMerge$MergeSubscriber.reportError(OperatorMerge.java:266)
at rx.internal.operators.OperatorMerge$MergeSubscriber.checkTerminate(OperatorMerge.java:818)
at rx.internal.operators.OperatorMerge$MergeSubscriber.emitLoop(OperatorMerge.java:579)
at rx.internal.operators.OperatorMerge$MergeSubscriber.emit(OperatorMerge.java:568)
at rx.internal.operators.OperatorMerge$InnerSubscriber.onError(OperatorMerge.java:852)
at rx.internal.operators.OperatorMerge$MergeSubscriber.reportError(OperatorMerge.java:266)
at rx.internal.operators.OperatorMerge$MergeSubscriber.checkTerminate(OperatorMerge.java:818)
at rx.internal.operators.OperatorMerge$MergeSubscriber.emitLoop(OperatorMerge.java:579)
at rx.internal.operators.OperatorMerge$MergeSubscriber.emit(OperatorMerge.java:568)
at rx.internal.operators.OperatorMerge$InnerSubscriber.onError(OperatorMerge.java:852)
at rx.internal.operators.OperatorMerge$MergeSubscriber.reportError(OperatorMerge.java:266)
at rx.internal.operators.OperatorMerge$MergeSubscriber.checkTerminate(OperatorMerge.java:818)
at rx.internal.operators.OperatorMerge$MergeSubscriber.emitLoop(OperatorMerge.java:579)
at rx.internal.operators.OperatorMerge$MergeSubscriber.emit(OperatorMerge.java:568)
at rx.internal.operators.OperatorMerge$InnerSubscriber.onError(OperatorMerge.java:852)
at rx.internal.operators.NotificationLite.accept(NotificationLite.java:132)
at rx.subjects.SubjectSubscriptionManager$SubjectObserver.emitNext(SubjectSubscriptionManager.java:253)
at rx.subjects.BehaviorSubject.onError(BehaviorSubject.java:141)
at com.polidea.rxandroidble.internal.connection.RxBleGattCallback.propagateStatusError(RxBleGattCallback.java:241)
at com.polidea.rxandroidble.internal.connection.RxBleGattCallback.propagateStatusErrorIfGattErrorOccurred(RxBleGattCallback.java:233)
at com.polidea.rxandroidble.internal.connection.RxBleGattCallback.access$200(RxBleGattCallback.java:35)
at com.polidea.rxandroidble.internal.connection.RxBleGattCallback$3.onConnectionStateChange(RxBleGattCallback.java:86)
at android.bluetooth.BluetoothGatt$1.onClientConnectionState(BluetoothGatt.java:228)
at android.bluetooth.IBluetoothGattCallback$Stub.onTransact(IBluetoothGattCallback.java:70)
at android.os.Binder.execTransact(Binder.java:453)
Caused by: rx.exceptions.OnErrorFailedException: Error occurred when trying to propagate error to Observer.onError
at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:187)
at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
at rx.exceptions.Exceptions.throwOrReport(Exceptions.java:216)
at rx.observers.SafeSubscriber.onNext(SafeSubscriber.java:139)
at rx.internal.operators.OperatorDistinctUntilChanged$1.onNext(OperatorDistinctUntilChanged.java:96)
at rx.internal.operators.NotificationLite.accept(NotificationLite.java:135)
at rx.subjects.SubjectSubscriptionManager$SubjectObserver.emitNext(SubjectSubscriptionManager.java:253)
at rx.subjects.BehaviorSubject.onNext(BehaviorSubject.java:160)
at com.polidea.rxandroidble.internal.RxBleDeviceImpl$1$1.call(RxBleDeviceImpl.java:77)
at rx.subscriptions.BooleanSubscription.unsubscribe(BooleanSubscription.java:71)
at rx.internal.util.SubscriptionList.unsubscribeFromAll(SubscriptionList.java:136)
at rx.internal.util.SubscriptionList.unsubscribe(SubscriptionList.java:125)
一旦设备由于超时而断开连接,当我再次扫描时,可以按预期在附近的可用设备中找到该设备。 但是,当我尝试连接到同一设备时,它会抛出异常,表明设备已连接
W/System.err: BleAlreadyConnectedException{macAddress=24:71:89:FE:99:E3}
W/System.err: at com.polidea.rxandroidble.internal.RxBleDeviceImpl.lambda$establishConnection$3(RxBleDeviceImpl.java:54)
W/System.err: at com.polidea.rxandroidble.internal.RxBleDeviceImpl$$Lambda$1.call(Unknown Source)
W/System.err: at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46)
W/System.err: at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
W/System.err: at rx.Observable.subscribe(Observable.java:10236)
W/System.err: at rx.Observable.subscribe(Observable.java:10203)
W/System.err: at rx.Observable.subscribe(Observable.java:10043)
但是,如果我在手机中关闭了蓝牙功能后又打开了蓝牙功能,或者我杀死了该应用程序并重新启动,则可以连接到设备。
当我手动断开设备并再次连接时,重新连接正常。 问题仅在发生超时断开连接时发生。
谁能告诉我为什么会这样吗?
从错误和.establishConnection()
函数的实现来看,您不会退订先前返回的Observable
。
@Override
public Observable<RxBleConnection> establishConnection(final boolean autoConnect) {
return Observable.defer(new Func0<Observable<RxBleConnection>>() {
@Override
public Observable<RxBleConnection> call() {
if (isConnected.compareAndSet(false, true)) {
return connector.prepareConnection(autoConnect)
.doOnSubscribe(new Action0() {
@Override
public void call() {
connectionStateSubject.onNext(CONNECTING);
}
})
.doOnNext(new Action1<RxBleConnection>() {
@Override
public void call(RxBleConnection rxBleConnection) {
connectionStateSubject.onNext(CONNECTED);
}
})
.doOnUnsubscribe(new Action0() {
@Override
public void call() {
connectionStateSubject.onNext(DISCONNECTED);
isConnected.set(false);
}
});
} else {
return Observable.error(new BleAlreadyConnectedException(bluetoothDevice.getAddress()));
}
}
});
}
退订上一个后,您应该可以建立新的连接。
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