android - Intents in Kotlin -


so, know in java use launch new activity

intent intent = new intent(this, someactivity.class); startactiviry(intent);

but i'm writting project using kotlin, in kotlin it's 

val intent = intent(this,someactivity::class.java) startactivity(intent)

but crashes problem 

    fatal exception: main process: com.pashabred.passlin, pid: 15243                                                                            java.lang.runtimeexception: unable start activity componentinfo{com.pashabred.passlin/com.pashabred.passlin.enterring}: kotlin.kotlinnullpointerexception     @ android.app.activitythread.performlaunchactivity(activitythread.java:2325)     @ android.app.activitythread.handlelaunchactivity(activitythread.java:2387)     @ android.app.activitythread.access$800(activitythread.java:151)     @ android.app.activitythread$h.handlemessage(activitythread.java:1303)     @ android.os.handler.dispatchmessage(handler.java:102)     @ android.os.looper.loop(looper.java:135)     @ android.app.activitythread.main(activitythread.java:5254)     @ java.lang.reflect.method.invoke(native method)     @ java.lang.reflect.method.invoke(method.java:372)     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903)     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:698)                                                                             caused by: kotlin.kotlinnullpointerexception     @ com.pashabred.passlin.enterring.oncreate(enterring.kt:17)     @ android.app.activity.performcreate(activity.java:5990)     @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1106)     @ android.app.activitythread.performlaunchactivity(activitythread.java:2278)     @ android.app.activitythread.handlelaunchactivity(activitythread.java:2387)     @ android.app.activitythread.access$800(activitythread.java:151)      @ android.app.activitythread$h.handlemessage(activitythread.java:1303)      @ android.os.handler.dispatchmessage(handler.java:102)      @ android.os.looper.loop(looper.java:135)      @ android.app.activitythread.main(activitythread.java:5254)      @ java.lang.reflect.method.invoke(native method)      @ java.lang.reflect.method.invoke(method.java:372)      @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903)      @ com.android.internal.os.zygoteinit.main(zygoteinit.java:698) 

ensure have (question mark):

override fun oncreate(savedinstancestate: bundle?) {     super.oncreate(savedinstancestate) }

instead:

override fun oncreate(savedinstancestate: bundle) {     super.oncreate(savedinstancestate) }

-

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