// java.lang.RuntimeException: Unable to stop activity {com.icechen1.notable.pro/com.icechen1.notable.library.HistoryActivity}: java.lang.IllegalArgumentException: Receiver not registered: com.icechen1.notable.library.HistoryActivity$1@b24f3e
// at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3500)
// at android.app.ActivityThread.handleWindowVisibility(ActivityThread.java:3592)
// at android.app.ActivityThread.-wrap24(ActivityThread.java)
// at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1383)
// at android.os.Handler.dispatchMessage(Handler.java:102)
// at android.os.Looper.loop(Looper.java:148)
// at android.app.ActivityThread.main(ActivityThread.java:5417)
// at java.lang.reflect.Method.invoke(Native Method)
// at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
// at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
// Caused by: java.lang.IllegalArgumentException: Receiver not registered: com.icechen1.notable.library.HistoryActivity$1@b24f3e
// at android.app.LoadedApk.forgetReceiverDispatcher(LoadedApk.java:780)
// at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:1195)
// at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:576)
// at com.icechen1.notable.library.HistoryActivity.onStop(Unknown Source)
// at android.app.Instrumentation.callActivityOnStop(Instrumentation.java:1278)
// at android.app.Activity.performStop(Activity.java:6395)
// at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3497)
// ... 9 more