java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

Stack Overflow | Olesya | 2 years ago
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    Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

    ezeenow.com | 1 year ago
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
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    scriptscoop.com | 2 years ago
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
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    Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

    Stack Overflow | 2 years ago | Olesya
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
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    java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

      at utanashati.reminder.HomepageActivity.onCreate()
    2. utanashati.reminder
      HomepageActivity.onCreate
      1. utanashati.reminder.HomepageActivity.onCreate(HomepageActivity.java:55)
      1 frame
    3. Android Platform
      ActivityThread.performLaunchActivity
      1. android.app.Activity.performCreate(Activity.java:5990)
      2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
      3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
      3 frames