java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference

GitHub | galadril | 3 months ago
  1. 0

    App stops when clicking on button

    Stack Overflow | 1 year ago | Martin Park
    java.lang.RuntimeException: Unable to start activity ComponentInfo{app.mobiledevicesecurity/app.mobiledevicesecurity.Quiz}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
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  3. 0

    NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference

    Stack Overflow | 1 year ago | James
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
  4. 0

    Android Studio CountDownTimer Navigation

    Stack Overflow | 1 year ago | Kendrick
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference

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    Root Cause Analysis

    1. 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()
    2. nl.hnogames.domoticz
      WelcomePage4.setUserVisibleHint
      1. nl.hnogames.domoticz.Welcome.WelcomePage4.resetLayout(WelcomePage4.java:164)
      2. nl.hnogames.domoticz.Welcome.WelcomePage4.setUserVisibleHint(WelcomePage4.java:71)
      2 frames
    3. Android Support v4
      FragmentPagerAdapter.setPrimaryItem
      1. android.support.v4.app.FragmentPagerAdapter.setPrimaryItem(FragmentPagerAdapter.java:130)
      1 frame
    4. com.heinrichreimersoftware.materialintro
      FadeableViewPager$PagerAdapterWrapper.setPrimaryItem
      1. com.heinrichreimersoftware.materialintro.view.FadeableViewPager$PagerAdapterWrapper.setPrimaryItem(FadeableViewPager.java:136)
      1 frame
    5. Android Support v4
      ViewPager.setCurrentItem
      1. android.support.v4.view.ViewPager.populate(ViewPager.java:1175)
      2. android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:608)
      3. android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:570)
      4. android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:562)
      4 frames
    6. com.heinrichreimersoftware.materialintro
      IntroActivity$2.onClick
      1. com.heinrichreimersoftware.materialintro.app.IntroActivity.nextSlide(IntroActivity.java:141)
      2. com.heinrichreimersoftware.materialintro.app.IntroActivity$2.onClick(IntroActivity.java:126)
      2 frames
    7. Android Platform
      ActivityThread.main
      1. android.view.View.performClick(View.java:4768)
      2. android.view.View$PerformClick.run(View.java:19692)
      3. android.os.Handler.handleCallback(Handler.java:739)
      4. android.os.Handler.dispatchMessage(Handler.java:95)
      5. android.os.Looper.loop(Looper.java:135)
      6. android.app.ActivityThread.main(ActivityThread.java:5539)
      6 frames
    8. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    9. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
      2 frames