java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.codyhunsberger.cis_3515_lab_3/com.example.codyhunsberger.cis_3515_lab_3.CanvasActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.hashCode()' on a null object reference

Stack Overflow | hunsbct | 4 months ago
  1. 0

    Android Studio: Issues using spinner in one activity to change background color in another

    Stack Overflow | 4 months ago | hunsbct
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.codyhunsberger.cis_3515_lab_3/com.example.codyhunsberger.cis_3515_lab_3.CanvasActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.hashCode()' on a null object reference
  2. 0
    Initialize the variable before calling a method on it.
  3. 0
    Use 'dialog' to access views from custom_layout layout.
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  5. 0
    The resource was accessed after it was dismissed.
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    Login and Registration Fatal Exception

    Stack Overflow | 10 months ago | Mario Giordano Bueno Sarmiento
    java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.hashCode()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'int java.lang.String.hashCode()' on a null object reference

      at com.example.codyhunsberger.cis_3515_lab_3.CanvasActivity.setBgColor()
    2. com.example.codyhunsberger
      CanvasActivity.onCreate
      1. com.example.codyhunsberger.cis_3515_lab_3.CanvasActivity.setBgColor(CanvasActivity.java:31)
      2. com.example.codyhunsberger.cis_3515_lab_3.CanvasActivity.onCreate(CanvasActivity.java:25)
      2 frames
    3. Android Platform
      ActivityThread.performLaunchActivity
      1. android.app.Activity.performCreate(Activity.java:6272)
      2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
      3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387)
      3 frames