java.lang.RuntimeException

Unable to start activity ComponentInfo{com.naran.whacko/com.naran.whacko.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageButton.setVisibility(int)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)

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Solutions on the web48063

  • via Stack Overflow by Vijay
    , 1 year ago
    Unable to start activity ComponentInfo{com.naran.whacko/com.naran.whacko.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageButton.setVisibility(int)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
  • Unable to start activity ComponentInfo{com.example.suzan.parentmeetme/com.example.suzan.parentmeetme.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
  • Unable to start activity ComponentInfo{daffodilvarsity.edu.bd.studentportal/daffodilvarsity.edu.bd. studentportal.MapsActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void
  • Stack trace

    • java.lang.RuntimeException: Unable to start activity ComponentInfo{com.naran.whacko/com.naran.whacko.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageButton.setVisibility(int)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)

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