E/BluetoothHidDevice: Could not bind to Bluetooth Service with Intent { act=android.bluetooth.IBluetoothHidDevice } W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback W/System.err: java.io.IOException: read failed, socket might closed or timeout, read ret: -1 W/System.err: at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:772) W/System.err: at android.bluetooth.BluetoothSocket.readInt(BluetoothSocket.java:786) at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:404) at com.example.bt_transmission.MainActivity$3.onCheckedChanged(MainActivity.java:248) W/System.err: at android.widget.CompoundButton.setChecked(CompoundButton.java:180) W/System.err: at android.widget.Switch.setChecked(Switch.java:1167) at android.widget.Switch.toggle(Switch.java:1162) at android.widget.CompoundButton.performClick(CompoundButton.java:140) W/System.err: at android.view.View.performClickInternal(View.java:7221) at android.view.View.access$3800(View.java:821) W/System.err: at android.view.View$PerformClick.run(View.java:27716) W/System.err: at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) W/System.err: at android.os.Looper.loop(Looper.java:227) at android.app.ActivityThread.main(ActivityThread.java:7835) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980) E/ANR_LOG: >>> msg's executing time is too long Blocked msg = { when=-30s49ms what=0 target=android.view.ViewRootImpl$ViewRootHandler callback=android.view.View$PerformClick } , cost = 30049 ms >>>Current msg List is: Current msg <1> = { when=-30s49ms what=0 target=android.view.ViewRootImpl$ViewRootHandler callback=android.view.View$UnsetPressedState } Current msg <2> = { when=-30s48ms barrier=7 } Current msg <3> = { when=-30s35ms what=0 target=android.os.Handler callback=android.view.-$$Lambda$1kvF4JuyM42-wmyDVPAIYdPz1jE } E/ANR_LOG: Current msg <4> = { when=-30s22ms what=0 target=android.widget.Toast$TN$1 obj=android.os.BinderProxy@2c75b2a } Current msg <5> = { when=-29s892ms what=0 target=android.os.Handler callback=android.view.-$$Lambda$1kvF4JuyM42-wmyDVPAIYdPz1jE } Current msg <6> = { when=-29s891ms what=0 target=android.os.Handler callback=android.view.-$$Lambda$1kvF4JuyM42-wmyDVPAIYdPz1jE } Current msg <7> = { when=-29s891ms what=0 target=android.os.Handler callback=android.view.-$$Lambda$1kvF4JuyM42-wmyDVPAIYdPz1jE } Current msg <8> = { when=-28s22ms what=1 target=android.widget.Toast$TN$1 } >>>CURRENT MSG DUMP OVER<<<