java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.Canvas.drawColor(int)' on a null object reference

processing.org | 3 months ago
  1. 0

    Randomly getting NullpointerException android.graphics.Canvas.drawColor(int) - Processing 2.x and 3.x Forum

    processing.org | 3 months ago
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.Canvas.drawColor(int)' on a null object reference
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    Null pointer error when mixing JButton and PApplet.

    GitHub | 3 years ago | kvlinden
    java.lang.NullPointerException
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    Conflict between setUndecorated and loadFont

    GitHub | 3 years ago | StanLepunK
    java.lang.NullPointerException
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    Null pointer exception in animation thread handledraw()

    Stack Overflow | 3 years ago | Wickerbough
    java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.graphics.Canvas.drawColor(int)' on a null object reference

      at processing.core.PGraphicsAndroid2D.backgroundImpl()
    2. processing.core
      PApplet.run
      1. processing.core.PGraphicsAndroid2D.backgroundImpl(Unknown Source)
      2. processing.core.PGraphicsAndroid2D.backgroundImpl(Unknown Source)
      3. processing.core.PGraphics.background(Unknown Source)
      4. processing.core.PGraphics.defaultSettings(Unknown Source)
      5. processing.core.PGraphics.checkSettings(Unknown Source)
      6. processing.core.PGraphicsAndroid2D.beginDraw(Unknown Source)
      7. processing.core.PApplet.handleDraw(Unknown Source)
      8. processing.core.PGraphicsAndroid2D.requestDraw(Unknown Source)
      9. processing.core.PApplet.run(Unknown Source)
      9 frames
    3. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:818)
      1 frame