thebowja / bluetoothledemo Goto Github PK

I tried to build the project to scan the available devices. However, it cannot detect any devices while executing the scan callback successfully. I laid out several devices to test the scan function but it could not any of these devices. And the error message is as follows:
2020-07-06 22:53:03.824 10051-10051/? E/Zygote: isWhitelistProcess - Process is Whitelisted
2020-07-06 22:53:03.825 10051-10051/? E/libpersona: scanKnoxPersonas
2020-07-06 22:53:03.825 10051-10051/? E/libpersona: Couldn't open the File - /data/system/users/0/personalist.xml - No such file or directory
2020-07-06 22:53:15.274 10051-10051/com.example.bluetoothledemo D/ViewRootImpl@df598f8[MainActivity]: MSG_WINDOW_FOCUS_CHANGED 0
2020-07-06 22:53:15.285 10051-10051/com.example.bluetoothledemo D/ViewRootImpl@4d3cece[DeviceListActivity]: dispatchAttachedToWindow
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$OnUnhandledKeyEventListenerWrapper>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at int androidx.core.view.ViewCompat.getLayoutDirection(android.view.View) (ViewCompat.java:1297)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at boolean androidx.appcompat.widget.ViewUtils.isLayoutRtl(android.view.View) (ViewUtils.java:58)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void androidx.appcompat.widget.Toolbar.onMeasure(int, int) (Toolbar.java:1578)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.View.measure(int, int) (View.java:23300)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(int, int) (ConstraintLayout.java:1227)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void androidx.constraintlayout.widget.ConstraintLayout.onMeasure(int, int) (ConstraintLayout.java:1572)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.View.measure(int, int) (View.java:23300)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.ViewGroup.measureChildWithMargins(android.view.View, int, int, int, int) (ViewGroup.java:6928)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.widget.FrameLayout.onMeasure(int, int) (FrameLayout.java:185)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.View.measure(int, int) (View.java:23300)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.ViewGroup.measureChildWithMargins(android.view.View, int, int, int, int) (ViewGroup.java:6928)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.widget.LinearLayout.measureChildBeforeLayout(android.view.View, int, int, int, int, int) (LinearLayout.java:1514)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.widget.LinearLayout.measureVertical(int, int) (LinearLayout.java:806)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.widget.LinearLayout.onMeasure(int, int) (LinearLayout.java:685)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.View.measure(int, int) (View.java:23300)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.ViewGroup.measureChildWithMargins(android.view.View, int, int, int, int) (ViewGroup.java:6928)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.widget.FrameLayout.onMeasure(int, int) (FrameLayout.java:185)
2020-07-06 22:53:15.292 10051-10051/com.example.bluetoothledemo I/zygote64: at void com.android.internal.policy.DecorView.onMeasure(int, int) (DecorView.java:899)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.View.measure(int, int) (View.java:23300)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.ViewRootImpl.performMeasure(int, int) (ViewRootImpl.java:2886)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at boolean android.view.ViewRootImpl.measureHierarchy(android.view.View, android.view.WindowManager$LayoutParams, android.content.res.Resources, int, int) (ViewRootImpl.java:1916)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.ViewRootImpl.performTraversals() (ViewRootImpl.java:2171)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.ViewRootImpl.doTraversal() (ViewRootImpl.java:1785)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.ViewRootImpl$TraversalRunnable.run() (ViewRootImpl.java:7832)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.Choreographer$CallbackRecord.run(long) (Choreographer.java:911)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.Choreographer.doCallbacks(int, long) (Choreographer.java:723)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.Choreographer.doFrame(long, int) (Choreographer.java:658)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.view.Choreographer$FrameDisplayEventReceiver.run() (Choreographer.java:897)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.os.Handler.handleCallback(android.os.Message) (Handler.java:789)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:98)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.os.Looper.loop() (Looper.java:164)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6944)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
2020-07-06 22:53:15.293 10051-10051/com.example.bluetoothledemo I/zygote64: at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)