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我正在開發一個使用Google Tango的應用程序。一段時間以來一切正常，但昨天重構了一些變量並恢復了一些變化後，它突然崩潰了。當啓動應用程序，我碰到下面的錯誤日誌：探戈應用程序突然打破JNI檢測到應用程序中的錯誤
A/art: art/runtime/java_vm_ext.cc:410] JNI DETECTED ERROR IN APPLICATION: JNI CallVoidMethodV called with pending exception java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String android.os.IBinder.getInterfaceDescriptor()' on a null object reference
A/art: art/runtime/java_vm_ext.cc:410] at void com.google.atap.tangoservice.TangoPointCloudData.readFromParcel(android.os.Parcel) (TangoPointCloudData.java:154)
A/art: art/runtime/java_vm_ext.cc:410] at void com.google.atap.tangoservice.TangoPointCloudData.<init>(android.os.Parcel) (TangoPointCloudData.java:109)
A/art: art/runtime/java_vm_ext.cc:410]
A/art: art/runtime/java_vm_ext.cc:410] in call to CallVoidMethodV
A/art: art/runtime/java_vm_ext.cc:410] "Binder_2" prio=5 tid=9 Runnable
A/art: art/runtime/java_vm_ext.cc:410] | group="main" sCount=0 dsCount=0 obj=0x12cfa0a0 self=0x5594118c60
A/art: art/runtime/java_vm_ext.cc:410] | sysTid=26922 nice=0 cgrp=default sched=0/0 handle=0x7fa30ed450
A/art: art/runtime/java_vm_ext.cc:410] | state=R schedstat=(23739007 23622981 186) utm=0 stm=2 core=3 HZ=100
A/art: art/runtime/java_vm_ext.cc:410] | stack=0x7fa2ff1000-0x7fa2ff3000 stackSize=1013KB
A/art: art/runtime/java_vm_ext.cc:410] | held mutexes= "mutator lock"(shared held)
A/art: art/runtime/java_vm_ext.cc:410] (no managed stack frames)
A/art: art/runtime/java_vm_ext.cc:410]
A/art: art/runtime/runtime.cc:366] Runtime aborting...
A/art: art/runtime/runtime.cc:366] Aborting thread:
A/art: art/runtime/runtime.cc:366] "Binder_2" prio=5 tid=9 Native
A/art: art/runtime/runtime.cc:366] | group="" sCount=0 dsCount=0 obj=0x12cfa0a0 self=0x5594118c60
A/art: art/runtime/runtime.cc:366] | sysTid=26922 nice=0 cgrp=default sched=0/0 handle=0x7fa30ed450
A/art: art/runtime/runtime.cc:366] | state=R schedstat=(42129216 29262460 216) utm=2 stm=2 core=5 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa2ff1000-0x7fa2ff3000 stackSize=1013KB
A/art: art/runtime/runtime.cc:366] | held mutexes= "abort lock"
A/art: art/runtime/runtime.cc:366] (no managed stack frames)
A/art: art/runtime/runtime.cc:366] Pending exception java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String android.os.IBinder.getInterfaceDescriptor()' on a null object reference
A/art: art/runtime/runtime.cc:366] at void com.google.atap.tangoservice.TangoPointCloudData.readFromParcel(android.os.Parcel) (TangoPointCloudData.java:154)
A/art: art/runtime/runtime.cc:366] at void com.google.atap.tangoservice.TangoPointCloudData.<init>(android.os.Parcel) (TangoPointCloudData.java:109)
A/art: art/runtime/runtime.cc:366] Dumping all threads without appropriate locks held: thread list lock mutator lock
A/art: art/runtime/runtime.cc:366] All threads:
A/art: art/runtime/runtime.cc:366] DALVIK THREADS (17):
A/art: art/runtime/runtime.cc:366] "Binder_2" prio=5 tid=9 Runnable
A/art: art/runtime/runtime.cc:366] | group="" sCount=0 dsCount=0 obj=0x12cfa0a0 self=0x5594118c60
A/art: art/runtime/runtime.cc:366] | sysTid=26922 nice=0 cgrp=default sched=0/0 handle=0x7fa30ed450
A/art: art/runtime/runtime.cc:366] | state=R schedstat=(51036091 29262460 221) utm=3 stm=2 core=5 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa2ff1000-0x7fa2ff3000 stackSize=1013KB
A/art: art/runtime/runtime.cc:366] | held mutexes= "abort lock" "mutator lock"(shared held)
A/art: art/runtime/runtime.cc:366] (no managed stack frames)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "main" prio=5 tid=1 Native
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x73ef86e8 self=0x5593e6de30
A/art: art/runtime/runtime.cc:366] | sysTid=26910 nice=0 cgrp=default sched=0/0 handle=0x7fa7c1efc8
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(957520220 146169897 1107) utm=74 stm=21 core=2 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fef65d000-0x7fef65f000 stackSize=8MB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait_queue_me+0xd4/0x12c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait+0xdc/0x1e4
A/art: art/runtime/runtime.cc:366] kernel: do_futex+0xc8/0x8d0
A/art: art/runtime/runtime.cc:366] kernel: SyS_futex+0xf8/0x174
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/art: art/runtime/runtime.cc:366] at android.os.MessageQueue.nativePollOnce(Native method)
A/art: art/runtime/runtime.cc:366] at android.os.MessageQueue.next(MessageQueue.java:323)
A/art: art/runtime/runtime.cc:366] at android.os.Looper.loop(Looper.java:135)
A/art: art/runtime/runtime.cc:366] at android.app.ActivityThread.main(ActivityThread.java:5418)
A/art: art/runtime/runtime.cc:366] at java.lang.reflect.Method.invoke!(Native method)
A/art: art/runtime/runtime.cc:366] at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
A/art: art/runtime/runtime.cc:366] at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "Signal Catcher" prio=5 tid=2 WaitingInMainSignalCatcherLoop
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x12cec0a0 self=0x55941009b0
A/art: art/runtime/runtime.cc:366] | sysTid=26915 nice=0 cgrp=default sched=0/0 handle=0x7fa3a2d450
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(653333 0 1) utm=0 stm=0 core=4 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa3931000-0x7fa3933000 stackSize=1013KB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: do_sigtimedwait+0xd8/0x1ac
A/art: art/runtime/runtime.cc:366] kernel: SyS_rt_sigtimedwait+0xac/0xec
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/art: art/runtime/runtime.cc:366] (no managed stack frames)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "JDWP" prio=5 tid=3 WaitingInMainDebuggerLoop
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x12cef0a0 self=0x55940f04e0
A/art: art/runtime/runtime.cc:366] | sysTid=26916 nice=0 cgrp=default sched=0/0 handle=0x7fa3927450
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(15460212 647917 28) utm=0 stm=1 core=2 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa382b000-0x7fa382d000 stackSize=1013KB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: poll_schedule_timeout+0x54/0xb8
A/art: art/runtime/runtime.cc:366] kernel: do_select+0x414/0x468
A/art: art/runtime/runtime.cc:366] kernel: core_sys_select+0x1e0/0x2e0
A/art: art/runtime/runtime.cc:366] kernel: SyS_pselect6+0x15c/0x1f0
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/art: art/runtime/runtime.cc:366] (no managed stack frames)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "ReferenceQueueDaemon" prio=5 tid=4 Waiting
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x12ce8c40 self=0x55940f30f0
A/art: art/runtime/runtime.cc:366] | sysTid=26917 nice=0 cgrp=default sched=0/0 handle=0x7fa381f450
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(607968 21093 12) utm=0 stm=0 core=4 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa371d000-0x7fa371f000 stackSize=1037KB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait_queue_me+0xd4/0x12c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait+0xdc/0x1e4
A/art: art/runtime/runtime.cc:366] kernel: do_futex+0xc8/0x8d0
A/art: art/runtime/runtime.cc:366] kernel: SyS_futex+0xf8/0x174
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/art: art/runtime/runtime.cc:366] at java.lang.Object.wait!(Native method)
A/art: art/runtime/runtime.cc:366] - waiting on <0x0f1a6280> (a java.lang.Class<java.lang.ref.ReferenceQueue>)
A/art: art/runtime/runtime.cc:366] at java.lang.Daemons$ReferenceQueueDaemon.run(Daemons.java:147)
A/art: art/runtime/runtime.cc:366] - locked <0x0f1a6280> (a java.lang.Class<java.lang.ref.ReferenceQueue>)
A/art: art/runtime/runtime.cc:366] at java.lang.Thread.run(Thread.java:818)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "FinalizerDaemon" prio=5 tid=5 Waiting
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x12ce8ca0 self=0x55940fb030
A/art: art/runtime/runtime.cc:366] | sysTid=26918 nice=0 cgrp=default sched=0/0 handle=0x7fa3713450
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(1231977 91667 11) utm=0 stm=0 core=5 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa3611000-0x7fa3613000 stackSize=1037KB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait_queue_me+0xd4/0x12c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait+0xdc/0x1e4
A/art: art/runtime/runtime.cc:366] kernel: do_futex+0xc8/0x8d0
A/art: art/runtime/runtime.cc:366] kernel: SyS_futex+0xf8/0x174
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/art: art/runtime/runtime.cc:366] at java.lang.Object.wait!(Native method)
A/art: art/runtime/runtime.cc:366] - waiting on <0x073f20b9> (a java.lang.ref.ReferenceQueue)
A/art: art/runtime/runtime.cc:366] at java.lang.Object.wait(Object.java:423)
A/art: art/runtime/runtime.cc:366] at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:101)
A/art: art/runtime/runtime.cc:366] - locked <0x073f20b9> (a java.lang.ref.ReferenceQueue)
A/art: art/runtime/runtime.cc:366] at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:72)
A/art: art/runtime/runtime.cc:366] at java.lang.Daemons$FinalizerDaemon.run(Daemons.java:185)
A/art: art/runtime/runtime.cc:366] at java.lang.Thread.run(Thread.java:818)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "FinalizerWatchdogDaemon" prio=5 tid=6 Sleeping
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x12ce8d00 self=0x5593f9e6a0
A/art: art/runtime/runtime.cc:366] | sysTid=26919 nice=0 cgrp=default sched=0/0 handle=0x7fa3607450
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(416302 0 6) utm=0 stm=0 core=0 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa3505000-0x7fa3507000 stackSize=1037KB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait_queue_me+0xd4/0x12c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait+0xdc/0x1e4
A/art: art/runtime/runtime.cc:366] kernel: do_futex+0xc8/0x8d0
A/art: art/runtime/runtime.cc:366] kernel: SyS_futex+0xf8/0x174
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/art: art/runtime/runtime.cc:366] at java.lang.Thread.sleep!(Native method)
A/art: art/runtime/runtime.cc:366] - sleeping on <0x09ef7cfe> (a java.lang.Object)
A/art: art/runtime/runtime.cc:366] at java.lang.Thread.sleep(Thread.java:1031)
A/art: art/runtime/runtime.cc:366] - locked <0x09ef7cfe> (a java.lang.Object)
A/art: art/runtime/runtime.cc:366] at java.lang.Thread.sleep(Thread.java:985)
A/art: art/runtime/runtime.cc:366] at java.lang.Daemons$FinalizerWatchdogDaemon.sleepFor(Daemons.java:273)
A/art: art/runtime/runtime.cc:366] at java.lang.Daemons$FinalizerWatchdogDaemon.waitForFinalization(Daemons.java:284)
A/art: art/runtime/runtime.cc:366] at java.lang.Daemons$FinalizerWatchdogDaemon.run(Daemons.java:232)
A/art: art/runtime/runtime.cc:366] at java.lang.Thread.run(Thread.java:818)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "HeapTaskDaemon" prio=5 tid=7 Native
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x12ce8d60 self=0x5593e8d5f0
A/art: art/runtime/runtime.cc:366] | sysTid=26920 nice=0 cgrp=default sched=0/0 handle=0x7fa34fb450
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(25782812 1505781 106) utm=2 stm=0 core=2 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa33f9000-0x7fa33fb000 stackSize=1037KB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait_queue_me+0xd4/0x12c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait+0xdc/0x1e4
A/art: art/runtime/runtime.cc:366] kernel: do_futex+0xc8/0x8d0
A/art: art/runtime/runtime.cc:366] kernel: SyS_futex+0xf8/0x174
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/art: art/runtime/runtime.cc:366] at dalvik.system.VMRuntime.runHeapTasks(Native method)
A/art: art/runtime/runtime.cc:366] at java.lang.Daemons$HeapTaskDaemon.run(Daemons.java:355)
A/art: art/runtime/runtime.cc:366] at java.lang.Thread.run(Thread.java:818)
A/art: art/runtime/runtime.cc:366]
A/art: art/runtime/runtime.cc:366] "Binder_1" prio=5 tid=8 Native
A/art: art/runtime/runtime.cc:366] | group="" sCount=1 dsCount=0 obj=0x12cf70a0 self=0x5593faa340
A/art: art/runtime/runtime.cc:366] | sysTid=26921 nice=0 cgrp=default sched=0/0 handle=0x7fa31f3450
A/art: art/runtime/runtime.cc:366] | state=S schedstat=(19983811 29755159 199) utm=1 stm=0 core=3 HZ=100
A/art: art/runtime/runtime.cc:366] | stack=0x7fa30f7000-0x7fa30f9000 stackSize=1013KB
A/art: art/runtime/runtime.cc:366] | held mutexes=
A/art: art/runtime/runtime.cc:366] kernel: __switch_to+0x70/0x7c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait_queue_me+0xd4/0x12c
A/art: art/runtime/runtime.cc:366] kernel: futex_wait+0xdc/0x1e4
A/art: art/runtime/runtime.cc:366] kernel: do_futex+0xc8/0x8d0
A/art: art/runtime/runtime.cc:366] kernel: SyS_futex+0xf8/0x174
A/art: art/runtime/runtime.cc:366] kernel: cpu_switch_to+0x48/0x4c
A/libc: Fatal signal 6 (SIGABRT), code -6 in tid 26922 (Binder_2)
我縮小的原因這一行：
mTango.connectListener(framePairs, new Tango.OnTangoUpdateListener() {...});
但由於錯誤並沒有提到我的代碼任何部分我不不知道在哪裏看得更遠。
我的發現處理問題後，至今：
- 如果監聽器包含代碼或不沒關係。
- 錯誤只發生在相機拍攝照片後。所以只要設備在桌子上，以便相機被阻擋，應用程序在技術上運行良好。
- 即使應用程序用於之前的工作，甚至更早的提交現在已被破壞。
- Google的基本示例仍然正常。
- 使用不同版本的Tango或Android不會改變任何內容。
- 清理gradle或執行乾淨安裝並不會改變任何內容。
- 我在Stackoverflow的另一個線程中發現，原因可能在於庫的代碼中，但是因爲之前我沒有看到這是怎麼回事。
有沒有人有一個想法如何解決這個問題？