NullPointerException

[18122570206]

Error log：
java.lang.NullPointerException: Attempt to invoke virtual method 'int org.fusesource.hawtbuf.DataByteArrayOutputStream.size()' on a null object reference
at org.fusesource.hawtdispatch.transport.AbstractProtocolCodec.write(AbstractProtocolCodec.java:140)
at org.fusesource.hawtdispatch.transport.TcpTransport.offer(TcpTransport.java:653)
at org.fusesource.mqtt.client.CallbackConnection.send(CallbackConnection.java:728)
at org.fusesource.mqtt.client.CallbackConnection.send(CallbackConnection.java:714)
at org.fusesource.mqtt.client.CallbackConnection.publish(CallbackConnection.java:660)
at org.fusesource.mqtt.client.CallbackConnection.publish(CallbackConnection.java:649)
at cn.startrails.boom.mqtt.MqttUtils.publish(MqttUtils.java:132)
at cn.startrails.boom.MainActivity$2.onProgressChanged(MainActivity.java:203)
at android.widget.SeekBar.onProgressRefresh(SeekBar.java:93)
at android.widget.ProgressBar.doRefreshProgress(ProgressBar.java:1327)
at android.widget.ProgressBar.refreshProgress(ProgressBar.java:1382)
at android.widget.ProgressBar.setProgressInternal(ProgressBar.java:1447)
at android.widget.AbsSeekBar.trackTouchEvent(AbsSeekBar.java:850)
at android.widget.AbsSeekBar.onTouchEvent(AbsSeekBar.java:760)
at android.view.View.dispatchTouchEvent(View.java:9958)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2671)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2358)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2693)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2358)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2671)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2358)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2671)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2358)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2671)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2358)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2671)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2358)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2671)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2358)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:414)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1810)
at android.app.Activity.dispatchTouchEvent(Activity.java:3196)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:68)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:376)
at android.view.View.dispatchPointerEvent(View.java:10180)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4496)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4361)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3901)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3954)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3920)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4047)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3928)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4104)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3901)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3954)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3920)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3928)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3901)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6272)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6246)
04-12 18:45:42.984 6055-6055/cn.startrails.boom E/AndroidRuntime: at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6207)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6378)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:187)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:176)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:6346)
at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:6401)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:873)
at android.view.Choreographer.doCallbacks(Choreographer.java:685)
at android.view.Choreographer.doFrame(Choreographer.java:615)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:859)
at android.os.Handler.handleCallback(Handler.java:754)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:163)
at android.app.ActivityThread.main(ActivityThread.java:6343)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:880)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:770)

keyCode：
byte[] b1 = {(byte) 0xFE, (byte) 0xEF, (byte) 0x01, (byte) youMenSx, (byte) youMenZy};
MqttUtils.getMqttUtils().publish("xjkj/9148659/to", b1, QoS.AT_MOST_ONCE, false);

public void publish(String topic, byte[] payload,
QoS qoS, boolean retain) {
if (callbackConnection != null) {
callbackConnection.publish(topic, payload, qoS, retain, this);
}
}

[jrobe]

I get the same thing, but only if I'm repeatedly sending messages, very quickly. Is that the same thing you're doing? If so, it's likely a multithreading issue.

Additionally, considering this repo looks like it's no longer supported, I'm likely going to be moving to a different framework regardless.