java.lang.NullPointerException

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  • java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference at nl.hnogames.domoticz.Welcome.WelcomePage4.resetLayout(WelcomePage4.java:164) at nl.hnogames.domoticz.Welcome.WelcomePage4.setUserVisibleHint(WelcomePage4.java:71) at android.support.v4.app.FragmentPagerAdapter.setPrimaryItem(FragmentPagerAdapter.java:130) at com.heinrichreimersoftware.materialintro.view.FadeableViewPager$PagerAdapterWrapper.setPrimaryItem(FadeableViewPager.java:136) at android.support.v4.view.ViewPager.populate(ViewPager.java:1175) at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:608) at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:570) at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:562) at com.heinrichreimersoftware.materialintro.app.IntroActivity.nextSlide(IntroActivity.java:141) at com.heinrichreimersoftware.materialintro.app.IntroActivity$2.onClick(IntroActivity.java:126) at android.view.View.performClick(View.java:4768) at android.view.View$PerformClick.run(View.java:19692) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5539) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
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