What are the possible reasons for NFC Service to become dead after some time?

We are using NFC tags as parking tickets for entry and exit. On each entry, the tag is written with some data and at the exit that data verifies the exit of the vehicle.

After entry and exit of some vehicles, the NfcService becomes dead, and the smartphone is unable to detect NFC tags. The device needs a reboot to restart NfcService and the device starts working fine again.

This error is seen at random and we have been unable to reproduce this error in the development environment, but we have observed this issue several times on the devices installed at entry and exit gates of parking areas.

We were able to manage the above log somehow when we were debugging this issue.

We have tried different changes like using enableReaderMode instead of enableForegroundDispatch, but the issue persists.

public void enableReaderMode() {
    try {
    Log.d("WTF", "Enabling reader mode");
    NfcAdapter nfc = NfcAdapter.getDefaultAdapter(this);

    if (nfc != null) {
        int flags = NfcAdapter.FLAG_READER_NFC_A ;

            nfc.enableReaderMode(this, new NfcAdapter.ReaderCallback() {
                @Override
                public void onTagDiscovered(Tag tag) {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Log.d("WTF", "Tag discovered");
                            String uid = ByteArrayToHexString(tag.getId());
                            Toast.makeText(MainActivity.this, getString(R.string.message_tag_detected), Toast.LENGTH_SHORT).show();
                            Ndef ndef = Ndef.get(tag);

                            if (isNFCDialogDisplayed) {

                                if (isWrite) {

                                    mNfcWriteFragment = (NFCWriteFragment) getFragmentManager().findFragmentByTag(NFCWriteFragment.TAG);
                                    mNfcWriteFragment.onNfcDetected(ndef, uid);

                                } else {

                                    mNfcReadFragment = (NFCReadFragment) getFragmentManager().findFragmentByTag(NFCReadFragment.TAG);
                                    mNfcReadFragment.onNfcDetected(ndef, uid);
                                }
                            }
                        }
                    });

                }
            }, flags, null);

    }

    }catch (Exception e){
        Crashlytics.logException(e);
    }
}

public void disableReaderMode() {
    try {
    Log.d("WTF", "Disabling reader mode");
    NfcAdapter nfc = NfcAdapter.getDefaultAdapter(this);
    if (nfc != null) {
            nfc.disableReaderMode(this);
    }
    }catch (Exception e){
        Crashlytics.logException(e);
    }
}

NFCWriteFragment and NFCReadFragment internally read and write NDEF data to the tags.

Similar questions on StackOverflow:

UPDATE

Shifted the code from onResume, so the activity is always active and visible when enableReadeMode() and disableReaderMode() is called

Here are the new logs

04-15 01:51:50.328 4987-4987/in.parksmart.operator D/WindowClient: Add to mViews: com.android.internal.policy.PhoneWindow$DecorView{55c53ae V.E...... R.....I. 0,0-0,0}, this = android.view.WindowManagerGlobal@ff3d558
04-15 01:51:50.329 4987-5037/in.parksmart.operator D/OpenGLRenderer: CanvasContext() 0x9cafb800
04-15 01:51:50.330 4987-4987/in.parksmart.operator D/ViewRootImpl: hardware acceleration is enabled, this = ViewRoot{7de1f47 in.parksmart.operator/in.parksmart.operator.MainActivity,ident = 133}
04-15 01:51:50.354 4987-4987/in.parksmart.operator D/Surface: Surface::allocateBuffers(this=0x9de38200)
04-15 01:51:50.360 4987-5037/in.parksmart.operator D/OpenGLRenderer: CanvasContext() 0x9cafb800 initialize window=0x9de38208, title=in.parksmart.operator/in.parksmart.operator.MainActivity
04-15 01:51:50.360 4987-5037/in.parksmart.operator D/Surface: Surface::connect(this=0x9de38200,api=1)
04-15 01:51:50.361 4987-5037/in.parksmart.operator W/libEGL: [ANDROID_RECORDABLE] format: 1
04-15 01:51:50.361 4987-5037/in.parksmart.operator D/Surface: Surface::setBufferCount(this=0x9de38200,bufferCount=4)
04-15 01:51:50.366 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9c9cd8e0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:51.181 4987-4999/in.parksmart.operator D/WTF: Disabling reader mode
04-15 01:51:51.182 4987-4999/in.parksmart.operator D/WTF : NFC: Incompatible Tag
04-15 01:51:51.218 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:51:51.218 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9c9cd8e0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:51.220 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:51:51.220 4987-5037/in.parksmart.operator D/Surface: Surface::connect(this=0x9de38200,api=1)
04-15 01:51:51.221 4987-5037/in.parksmart.operator W/libEGL: [ANDROID_RECORDABLE] format: 1
04-15 01:51:51.221 4987-5037/in.parksmart.operator D/Surface: Surface::setBufferCount(this=0x9de38200,bufferCount=4)
04-15 01:51:51.224 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9c9cd8e0) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:51:51.432 4987-5077/in.parksmart.operator D/NativeCrypto: ssl=0xaa571900 sslWrite buf=0x9da11aa0 len=7 write_timeout_millis=0
04-15 01:51:51.432 4987-5077/in.parksmart.operator D/NativeCrypto:  sslNotify, appData=0xaf928a00 ret=1
04-15 01:51:51.459 4987-5052/in.parksmart.operator D/NativeCrypto:  sslSelect, appData=0xaf928a00 woken up by a token
04-15 01:51:51.459 4987-5052/in.parksmart.operator D/NativeCrypto:  sslSelect, appData=0xaf928a00 read ret=1 
04-15 01:51:51.459 4987-5052/in.parksmart.operator D/NativeCrypto:  sslSelect, appData=0xaf928a00 woken up by a token
04-15 01:51:51.459 4987-5052/in.parksmart.operator D/NativeCrypto:  sslSelect, appData=0xaf928a00 read ret=1 
04-15 01:51:54.335 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9d9715a0) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:51:54.414 4987-4987/in.parksmart.operator D/SettingsInterface:  from settings cache , name = sound_effects_enabled , value = 0
04-15 01:51:54.414 4987-4987/in.parksmart.operator D/WTF: Enabling reader mode
04-15 01:51:54.467 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:51:54.467 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9c9cd8e0) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:51:54.468 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9d9715a0) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:51:54.471 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:51:54.471 4987-5037/in.parksmart.operator D/Surface: Surface::connect(this=0x9de38200,api=1)
04-15 01:51:54.472 4987-5037/in.parksmart.operator W/libEGL: [ANDROID_RECORDABLE] format: 1
04-15 01:51:54.474 4987-5037/in.parksmart.operator D/Surface: Surface::setBufferCount(this=0x9de38200,bufferCount=4)
04-15 01:51:54.478 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9d9715a0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:54.485 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9c9cd8e0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:54.506 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9d971610) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:54.542 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9d971680) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:54.976 4987-5000/in.parksmart.operator D/WTF: Disabling reader mode
04-15 01:51:54.977 4987-5000/in.parksmart.operator D/WTF : NFC: Incompatible Tag
04-15 01:51:55.003 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:51:55.003 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9d9715a0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:55.004 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9c9cd8e0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:55.005 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9d971610) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:55.005 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9d971680) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:51:55.007 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:51:55.008 4987-5037/in.parksmart.operator D/Surface: Surface::connect(this=0x9de38200,api=1)
04-15 01:51:55.009 4987-5037/in.parksmart.operator W/libEGL: [ANDROID_RECORDABLE] format: 1
04-15 01:51:55.010 4987-5037/in.parksmart.operator D/Surface: Surface::setBufferCount(this=0x9de38200,bufferCount=4)
04-15 01:51:55.012 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9d971680) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:51:56.966 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9d971610) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:51:57.023 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9c9cd8e0) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:51:57.118 4987-4987/in.parksmart.operator D/SettingsInterface:  from settings cache , name = sound_effects_enabled , value = 0
04-15 01:51:57.119 4987-4987/in.parksmart.operator D/WTF: Enabling reader mode
04-15 01:52:05.451 4987-4987/in.parksmart.operator E/NFC: NFC service dead - attempting to recover
    android.os.DeadObjectException
        at android.os.BinderProxy.transactNative(Native Method)
        at android.os.BinderProxy.transact(Binder.java:511)
        at android.nfc.INfcAdapter$Stub$Proxy.setReaderMode(INfcAdapter.java:614)
        at android.nfc.NfcActivityManager.setReaderMode(NfcActivityManager.java:241)
        at android.nfc.NfcActivityManager.enableReaderMode(NfcActivityManager.java:217)
        at android.nfc.NfcAdapter.enableReaderMode(NfcAdapter.java:1299)
        at in.parksmart.operator.NFCReadFragment.enableReaderMode(NFCReadFragment.java:131)
        at in.parksmart.operator.NFCReadFragment$1.onClick(NFCReadFragment.java:100)
        at android.view.View.performClick(View.java:5265)
        at android.view.View$PerformClick.run(View.java:21534)
        at android.os.Handler.handleCallback(Handler.java:815)
        at android.os.Handler.dispatchMessage(Handler.java:104)
        at android.os.Looper.loop(Looper.java:207)
        at android.app.ActivityThread.main(ActivityThread.java:5728)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
04-15 01:52:05.452 4987-4987/in.parksmart.operator E/NFC: could not retrieve NFC service during service recovery
04-15 01:52:05.454 4987-4987/in.parksmart.operator I/Choreographer: Skipped 432 frames!  The application may be doing too much work on its main thread.
04-15 01:52:05.473 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:52:05.473 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9d971680) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:52:05.474 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9d971610) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:52:05.475 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9c9cd8e0) (w:584 h:593 s:592 f:0x1 u:0x000f02)
04-15 01:52:05.477 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:52:05.478 4987-5037/in.parksmart.operator D/Surface: Surface::connect(this=0x9de38200,api=1)
04-15 01:52:05.480 4987-5037/in.parksmart.operator W/libEGL: [ANDROID_RECORDABLE] format: 1
04-15 01:52:05.481 4987-5037/in.parksmart.operator D/Surface: Surface::setBufferCount(this=0x9de38200,bufferCount=4)
04-15 01:52:05.485 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9c9cd8e0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:52:05.509 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:52:05.509 4987-5037/in.parksmart.operator D/GraphicBuffer: unregister, handle(0x9c9cd8e0) (w:656 h:497 s:656 f:0x1 u:0x000f02)
04-15 01:52:05.511 4987-5037/in.parksmart.operator D/Surface: Surface::disconnect(this=0x9de38200,api=1)
04-15 01:52:05.516 4987-4987/in.parksmart.operator D/WindowClient: Remove from mViews: com.android.internal.policy.PhoneWindow$DecorView{55c53ae V.E...... R......D 0,0-528,369}, this = android.view.WindowManagerGlobal@ff3d558
04-15 01:52:05.516 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.517 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_MOVE, actionButton=0, id[0]=0, x[0]=-33.087376, y[0]=95.55115, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=6, eventTime=1689826, downTime=1689716, deviceId=2, source=0x1002 }
04-15 01:52:05.517 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.518 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_UP, actionButton=0, id[0]=0, x[0]=-33.087376, y[0]=95.55115, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=1689842, downTime=1689716, deviceId=2, source=0x1002 }
04-15 01:52:05.518 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.519 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_DOWN, actionButton=0, id[0]=0, x[0]=353.3759, y[0]=527.21387, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=1692129, downTime=1692129, deviceId=2, source=0x1002 }
04-15 01:52:05.520 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.520 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_MOVE, actionButton=0, id[0]=0, x[0]=353.3759, y[0]=527.21387, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=6, eventTime=1692243, downTime=1692129, deviceId=2, source=0x1002 }
04-15 01:52:05.520 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.521 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_UP, actionButton=0, id[0]=0, x[0]=353.3759, y[0]=527.21387, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=1692258, downTime=1692129, deviceId=2, source=0x1002 }
04-15 01:52:05.521 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.521 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_DOWN, actionButton=0, id[0]=0, x[0]=393.3204, y[0]=526.21466, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=1692338, downTime=1692338, deviceId=2, source=0x1002 }
04-15 01:52:05.521 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.522 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_MOVE, actionButton=0, id[0]=0, x[0]=393.3204, y[0]=526.21466, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=4, eventTime=1692416, downTime=1692338, deviceId=2, source=0x1002 }
04-15 01:52:05.522 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:05.522 4987-4987/in.parksmart.operator W/ViewRootImpl: Dropping event due to root view being removed: MotionEvent { action=ACTION_UP, actionButton=0, id[0]=0, x[0]=393.3204, y[0]=526.21466, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=1692432, downTime=1692338, deviceId=2, source=0x1002 }
04-15 01:52:05.522 4987-4987/in.parksmart.operator W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
04-15 01:52:06.898 4987-4987/in.parksmart.operator D/SettingsInterface:  from settings cache , name = sound_effects_enabled , value = 0
04-15 01:52:06.899 4987-4987/in.parksmart.operator E/NFC: NFC service dead - attempting to recover
    android.os.DeadObjectException
        at android.os.BinderProxy.transactNative(Native Method)
        at android.os.BinderProxy.transact(Binder.java:511)
        at android.nfc.INfcAdapter$Stub$Proxy.getState(INfcAdapter.java:365)
        at android.nfc.NfcAdapter.isEnabled(NfcAdapter.java:642)
        at in.parksmart.operator.MainActivity$PlaceholderFragment.lambda$onCreateView$4(MainActivity.java:2925)
        at in.parksmart.operator.-$$Lambda$MainActivity$PlaceholderFragment$rsZBvNO0FFN0PjGCm8QiSvrhIqw.onClick(lambda)
        at android.view.View.performClick(View.java:5265)
        at android.view.View$PerformClick.run(View.java:21534)
        at android.os.Handler.handleCallback(Handler.java:815)
        at android.os.Handler.dispatchMessage(Handler.java:104)
        at android.os.Looper.loop(Looper.java:207)
        at android.app.ActivityThread.main(ActivityThread.java:5728)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
04-15 01:52:06.941 4987-4987/in.parksmart.operator D/WindowClient: Add to mViews: com.android.internal.policy.PhoneWindow$DecorView{dcd6d0c V.E...... R.....I. 0,0-0,0}, this = android.view.WindowManagerGlobal@ff3d558
04-15 01:52:06.942 4987-5037/in.parksmart.operator D/OpenGLRenderer: CanvasContext() 0x9f734800
04-15 01:52:06.943 4987-4987/in.parksmart.operator D/ViewRootImpl: hardware acceleration is enabled, this = ViewRoot{5eeb4b3 in.parksmart.operator/in.parksmart.operator.MainActivity,ident = 134}
04-15 01:52:06.972 4987-5037/in.parksmart.operator D/OpenGLRenderer: CanvasContext() 0x9f734800 initialize window=0x9de38208, title=in.parksmart.operator/in.parksmart.operator.MainActivity
04-15 01:52:06.972 4987-4987/in.parksmart.operator D/Surface: Surface::allocateBuffers(this=0x9de38200)
04-15 01:52:06.972 4987-5037/in.parksmart.operator D/Surface: Surface::connect(this=0x9de38200,api=1)
04-15 01:52:06.975 4987-5037/in.parksmart.operator W/libEGL: [ANDROID_RECORDABLE] format: 1
04-15 01:52:06.976 4987-5037/in.parksmart.operator D/Surface: Surface::setBufferCount(this=0x9de38200,bufferCount=4)
04-15 01:52:06.980 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9c9cd8e0) (w:812 h:400 s:816 f:0x1 u:0x000f02)
04-15 01:52:07.008 4987-5037/in.parksmart.operator D/OpenGLRenderer: CacheTexture 4 upload: x, y, width height = 0, 0, 1024, 512
04-15 01:52:07.025 4987-5037/in.parksmart.operator D/GraphicBuffer: register, handle(0x9d974780) (w:812 h:400 s:816 f:0x1 u:0x000f02)
04-15 01:52:13.710 4987-5052/in.parksmart.operator D/NativeCrypto: ssl=0xaa571900 sslRead buf=0xaf907641 len=1,timeo=0
04-15 01:52:13.710 4987-5052/in.parksmart.operator D/NativeCrypto: ssl=0xaa571900 sslRead buf=0xaf917800 len=91,timeo=0
04-15 01:52:13.711 4987-5052/in.parksmart.operator D/NativeCrypto: ssl=0xaa571900 sslRead buf=0xaf907640 len=1,timeo=0
04-15 01:52:13.722 4987-4987/in.parksmart.operator D/FBDB: Child Removed
04-15 01:52:13.729 4987-4987/in.parksmart.operator D/FBDB: Child Removed
04-15 01:52:13.729 4987-4987/in.parksmart.operator D/FBDB: Child removed

Doesn’t seem to be a case of activity recreation now. Everytime we expect NFC tag to be connected we call enableReaderMode and we call disableReaderMode as soon as our work with the tag is over.

The device being used at the customer end is Telpo 900B.

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  5. “unable to locate adb” using Android Studio [duplicate]
  6. Differences between arm64 and aarch64
  7. Error: No toolchains found in the NDK toolchains folder for ABI with prefix: llvm
  8. This adb server’s $ADB_VENDOR_KEYS is not set
  9. Can’t create handler inside thread that has not called Looper.prepare()
  10. This adb server’s $ADB_VENDOR_KEYS is not set
  11. E: unable to locate package pip
  12. Exception : AAPT2 error: check logs for details
  13. How can I find and run the keytool
  14. Android ADB devices unauthorized
  15. adb is not recognized as internal or external command, operable program or batch file
  16. Getting net::ERR_UNKNOWN_URL_SCHEME while calling telephone number from HTML page in Android
  17. You need to use a Theme.AppCompat theme (or descendant) with this activity
  18. Still getting warning : Configuration ‘compile’ is obsolete and has been replaced with ‘implementation’
  19. java.lang.NullPointerException: Attempt to invoke virtual method on a null object reference
  20. because an app is obscuring a permissions request, Settings can’t verify your response
  21. Android: adb pull file on desktop
  22. ADB No Devices Found
  23. adb shell su works but adb root does not
  24. RecyclerView vs. ListView
  25. How do I remove the title bar from my app?
  26. Android – Adding at least one Activity with an ACTION-VIEW intent-filter after Updating SDK version 23
  27. What does getActivity() mean?
  28. Session ‘app’: Error Installing APK
  29. adb shell su works but adb root does not
  30. MediaStore.Images.Media.insertImage deprecated
  31. How to update Notification with RemoteViews?
  32. How to fix: Error device not found with ADB.exe
  33. How to change background color in android app
  34. How to create a popup window (PopupWindow) in Android
  35. findViewById in Fragment
  36. ImageView in circular through XML
  37. No Sound coming from Android Emulator [duplicate]
  38. Font size of TextView in Android application changes on changing font size from native settings
  39. Android: How to handle right to left swipe gestures
  40. No tests found for given includes Error, when running Parameterized Unit test in Android Studio
  41. Could not identify launch Activity: Default Activity not found
  42. Android: Difference between Parcelable and Serializable?
  43. Session ‘app’ error while installing APK
  44. What does “Failure [INSTALL_FAILED_OLDER_SDK]” mean in Android Studio?
  45. How to give persiomission com.sec.android.provider.badge.permission.READ or WRITE in android 6.0
  46. How to make a round button?
  47. java.lang.RuntimeException: Unable to start activity ComponentInfo
  48. Android LinearLayout Gradient Background
  49. Multiple dex files define Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat
  50. Why emulator is very slow in Android Studio?
  51. Android Studio SDK location
  52. Android Studio SDK location
  53. How to create listview onItemclicklistener
  54. Android Studio-No Module
  55. Android Device not recognized by adb
  56. The application may be doing too much work on its main thread
  57. setOnClickListener error – cannot resolve symbol
  58. Application Installation Failed in Android Studio
  59. What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?
  60. How to convert int to Integer
  61. Why AVD Manager options are not showing in Android Studio
  62. Error checking if Bluetooth is enabled in Android (REQUEST_ENABLE_BT cannot be resolved to a variable)
  63. What is the difference between “px”, “dip”, “dp” and “sp”?
  64. Android Fragment onAttach() deprecated
  65. Fragment MyFragment not attached to Activity
  66. onSaveInstanceState () and onRestoreInstanceState ()
  67. Getting android.content.res.Resources$NotFoundException: exception even when the resource is present in android
  68. Login Error: There is an error in logging you into this application. Please try again later
  69. Unsupported major.minor version 52.0 when rendering in Android Studioandroid android-studio rendering preview
  70. What is Sandboxed_process0 and why do i have so many instances of it listed in the memory usage for my app
  71. Android Facebook integration with invalid key hash
  72. Android dismiss keyboard
  73. How to decompile an android app from the google play store
  74. How to emulate a gyroscope in an Android Emulator
  75. How do I center text horizontally and vertically in a TextView?
  76. Fullscreen Activity in Android?
  77. How do I get the currently displayed fragment?
  78. Call to getLayoutInflater() in places not in activity
  79. Android: How can I Convert String to Date?
  80. Your content must have a ListView whose id attribute is ‘android.R.id.list’
  81. the item you requested is not available for purchase
  82. Closing Application with Exit button
  83. How to implement a confirmation (yes/no) DialogPreference?
  84. Android Studio Gradle DSL method not found: ‘android()’ — Error(17,0)
  85. USB Debugging option greyed out
  86. Android: No Activity found to handle Intent error? How it will resolve
  87. Android Drawing Separator/Divider Line in Layout?
  88. XML has empty body?
  89. “Gradle Version 2.10 is required.” Error
  90. How to Resize a Bitmap in Android?
  91. What to use instead of “addPreferencesFromResource” in a PreferenceActivity?
  92. How to code using android studio to send an email
  93. HAX kernel module is not installed
  94. Failed to find style ‘coordinatorLayoutStyle’ in current theme
  95. How to change spinner text size and text color?
  96. Android Device not recognized by adb
  97. Not able to access adb in OS X through Terminal, “command not found”
  98. Cannot resolve symbol AppCompatActivity – Support v7 libraries aren’t recognized?
  99. Viewing statistics on self hosted site from Android WordPress app
  100. WordPress post to android

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