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Ramotion / paper-onboarding-android

:octocat: PaperOnboarding is a material design slider made by @Ramotion

Home Page:https://www.ramotion.com/paper-onboarding-android/

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NullPointerException error

subhra9326 opened this issue · comments

commented

Your code converted into Kotlin

val engine = PaperOnboardingEngine(findViewById(R.id.onboardingRootView), getDataForOnboarding(), applicationContext)
engine.setOnChangeListener { oldElementIndex, newElementIndex -> Toast.makeText(applicationContext, "Swiped from $oldElementIndex to $newElementIndex", Toast.LENGTH_SHORT).show() }
engine.setOnRightOutListener {
// Probably here will be your exit action
Toast.makeText(applicationContext, "Swiped out right", Toast.LENGTH_SHORT).show()
}

I get error on R.id.onboardingRootView part

Errror is : Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference
at com.ramotion.paperonboarding.PaperOnboardingEngine.(PaperOnboardingEngine.java:83)
at io.insyssky.mediassistplus.activity.OnBoardActivity.onCreate(OnBoardActivity.kt:20)

commented

Hi, @subhra9326. I couldn't reproduce that issue. Try to look closer to example app presented in this repo, it works fine, so i think there is a minor error in your code.