Получавам странна грешка, когато стартирам своя MainActivity
:
06-16 16:01:05.193 2083-2083/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.android.example.github, PID: 2083
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.example.github/com.android.example.github.ui.MainActivity}: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2666)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2727)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1478)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6121)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
Caused by: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
at com.android.example.github.injection.AppInjector$init$1.onActivityCreated(AppInjector.kt)
at android.app.Application.dispatchActivityCreated(Application.java:197)
at android.app.Activity.onCreate(Activity.java:961)
at android.support.v4.app.BaseFragmentActivityGingerbread.onCreate(BaseFragmentActivityGingerbread.java:54)
at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:319)
at com.android.example.github.ui.MainActivity.onCreate(MainActivity.kt:20)
at android.app.Activity.performCreate(Activity.java:6682)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2619)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2727)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1478)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6121)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
Това е моят MainActivity
клас:
class MainActivity : LifecycleActivity(), HasSupportFragmentInjector {
lateinit var dispatchingAndroidInjector: DispatchingAndroidInjector<Fragment>
@Inject set
lateinit var navigationController: NavigationController
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.main_activity)
if (savedInstanceState == null) {
navigationController.navigateToSearch()
}
}
override fun supportFragmentInjector(): AndroidInjector<Fragment> {
return dispatchingAndroidInjector
}
}
Грешката гласи, че параметърът savedInstanceState
е null, когато е указан като не-null; но е nullable (savedInstanceState: Bundle?
) и методът onCreate()
е маркиран като @Nullable
в източника.
Не съм срещал тази грешка в нито един от другите си проекти в Kotlin. Използвам Kotlin версия 1.1.2-5; и имаше същата грешка с 1.1.2-3.