java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.design.widget.NavigationView.setNavigationItemSelectedListener(android.support.design.widget.NavigationView$OnNavigationItemSelectedListener)' on a null object reference

Stack Overflow | Wagner Loch | 3 months ago
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  1. 0

    Getting NullPointerException at NavigationView

    Stack Overflow | 3 months ago | Wagner Loch
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.design.widget.NavigationView.setNavigationItemSelectedListener(android.support.design.widget.NavigationView$OnNavigationItemSelectedListener)' on a null object reference
  2. 0

    Peculiar nullpointerexception when attempting to invoke addDrawerListener

    Stack Overflow | 1 year ago | Potatosaurus
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.widget.DrawerLayout.addDrawerListener(android.support.v4.widget.DrawerLayout$DrawerListener)' on a null object reference
  3. 0

    Getting nullpointerexception even after giving right reference. Please see details

    Stack Overflow | 1 year ago | Hammad Nasir
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.abc.xyz/com.abc.xyz.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.support.design.widget.NavigationView.getHeaderView(int)' on a null object reference
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  5. 0

    Android DrawerLayout with NullPointerException

    Stack Overflow | 5 months ago | Nagas
    java.lang.RuntimeException: Unable to start activity ComponentInfo{project_name/project_name.activity.HomeActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.support.design.widget.NavigationView.getHeaderView(int)' on a null object reference
  6. 0

    NAVIGATION DRAWER NULL POINTER EXCEPTION

    Stack Overflow | 7 months ago | Abdur Rafay
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.adolfhipster.thesavingsjar/com.example.adolfhipster.thesavingsjar.activity.HomeActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.support.design.widget.NavigationView.getHeaderView(int)' on a null object reference

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Root Cause Analysis

  1. java.lang.NullPointerException

    Attempt to invoke virtual method 'void android.support.design.widget.NavigationView.setNavigationItemSelectedListener(android.support.design.widget.NavigationView$OnNavigationItemSelectedListener)' on a null object reference

    at android.app.ActivityThread.performLaunchActivity()
  2. Android Platform
    ActivityThread.handleLaunchActivity
    1. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
    2. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
    2 frames