确保运行测试的设备已解锁.如果屏幕关闭或处于锁定屏幕，您将获得一个大致如下所示的堆栈跟踪:

Make sure the device you are running the tests on is unlocked. If the screen is off or at the lock screen you will get a stack trace that looks roughly like this:

java.lang.RuntimeException: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at androidx.test.runner.MonitoringInstrumentation.runOnMainSync(MonitoringInstrumentation.java:441)
at androidx.test.core.app.ActivityScenario.onActivity(ActivityScenario.java:564)
at androidx.fragment.app.testing.FragmentScenario.internalLaunch(FragmentScenario.java:300)
at androidx.fragment.app.testing.FragmentScenario.launchInContainer(FragmentScenario.java:282)
at com.foo.package.YourFragmentTest.yourTestFunction(YourFragmentTest.kt:xy)

Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState