华为有几率 InputDispatcher 失效

设备厂商：华为
设备型号：Nova5 pro，荣耀30
设备 ROM：emui 10.1.0、magicUI 3.0
Android 版本：10
涉及的 Android API：InputDispatcher
预期表现：按返回事件正常传递到Activity
实际表现：某些情况，返回无效，onBackPressed 无触发, log 找不到 focused window

相关 logcat 日志：

W/WindowManager: result: 0 displayId: -1
I/InputDispatcher: touch process [0]
I/InputDispatcher: Dropping event because there is no focused window in display 0, result = -1 .
I/WindowManager: interceptKeyBeforeQueueing: key 4 , result : 1
I/InputDispatcher: Dropping event because there is no focused window in display 0, result = -1 .
aptouch_daemon: print_log, touch:0, down:0 
I/HwFingersSnapshooter: handleMotionEvent last finger(0) up.
I/HwWifiProServiceProxy: ctrlHwWifiNetwork pkgName: WIFIPRO_SERVICE interfaceId: 8
I/HwWifiProServiceProxy: ctrlHwWifiNetwork pkgName: WIFIPRO_SERVICE interfaceId: 80
I/HwQoeQualityMonitor: rttTime=4492520, rttPacketNum=7364, tcpTxPacket=58825, tcpRxPacket=18035, 
tcpReSendPacket=33604
I/HwQoeQualityMonitor: RttPacket is 0 ,update secInfo with last
I/HwQoeQualityMonitor: MSG_APP_STATE_BAD
I/InputDispatcher: Dropping event because there is no focused window in display 0, result = -1 .
I/HwPhoneStatusBar: handleLongPressBack runInThread
I/HwPhoneStatusBar: handleLongPressBack runInThread isInLockTaskMode false

补充说明：返回按键事件会被 InputDispatcher 持有，松开返回，按下多任务键，这时候会触发 返回+多任务 快捷功能

android-in-china / Compatibility

华为有几率 InputDispatcher 失效 #22