java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setBackgroundDrawable(android.graphics.drawable.Drawable)' on a null object reference

Stack Overflow | Almas | 7 months ago
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    Stack Overflow | 7 months ago | Almas
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setBackgroundDrawable(android.graphics.drawable.Drawable)' on a null object reference
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    Stack Overflow | 2 years ago | Korean Air
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference ***at kr.co.lenonstudio.kakaovideo.webviewActivity.onCreate(webviewActivity.java:43)***

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.app.ActionBar.setBackgroundDrawable(android.graphics.drawable.Drawable)' on a null object reference

      at info.androidhive.customlistviewvolley.MainActivity.onCreate()
    2. info.androidhive.customlistviewvolley
      MainActivity.onCreate
      1. info.androidhive.customlistviewvolley.MainActivity.onCreate(MainActivity.java:55)
      1 frame
    3. Android Platform
      Activity.performCreate
      1. android.app.Activity.performCreate(Activity.java:6185)
      1 frame