title: Getting error while adding proguard
body: <p>Logcat:</p>
  
  <pre><code>Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find superclass or interface javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow$PickMe$1: can't find superclass or interface java.awt.event.ActionListener
  Warning:com.sun.pdfview.OutlineNode: can't find superclass or interface javax.swing.tree.DefaultMutableTreeNode
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find superclass or interface java.awt.image.ComponentColorModel
  Warning:com.sun.pdfview.PDFPrintPage: can't find superclass or interface java.awt.print.Printable
  Warning:com.sun.pdfview.PDFPrintPage$1: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer: can't find superclass or interface javax.swing.JFrame
  Warning:com.sun.pdfview.PDFViewer: can't find superclass or interface java.awt.event.KeyListener
  Warning:com.sun.pdfview.PDFViewer: can't find superclass or interface javax.swing.event.TreeSelectionListener
  Warning:com.sun.pdfview.PDFViewer$1: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$10: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$11: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$12: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$13: can't find superclass or interface java.awt.event.WindowAdapter
  Warning:com.sun.pdfview.PDFViewer$14: can't find superclass or interface java.awt.event.ActionListener
  Warning:com.sun.pdfview.PDFViewer$16: can't find superclass or interface javax.swing.filechooser.FileFilter
  Warning:com.sun.pdfview.PDFViewer$2: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$3: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$4: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$5: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$6: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$7: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$8: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$9: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$ThumbAction: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PDFViewer$ZoomAction: can't find superclass or interface javax.swing.AbstractAction
  Warning:com.sun.pdfview.PagePanel: can't find superclass or interface javax.swing.JPanel
  Warning:com.sun.pdfview.PagePanel: can't find superclass or interface java.awt.image.ImageObserver
  Warning:com.sun.pdfview.PagePanel: can't find superclass or interface java.awt.event.MouseListener
  Warning:com.sun.pdfview.PagePanel: can't find superclass or interface java.awt.event.MouseMotionListener
  Warning:com.sun.pdfview.PdfSubByteSampleModel: can't find superclass or interface java.awt.image.SampleModel
  Warning:com.sun.pdfview.RefImage: can't find superclass or interface java.awt.image.BufferedImage
  Warning:com.sun.pdfview.ThumbPanel: can't find superclass or interface javax.swing.JPanel
  Warning:com.sun.pdfview.ThumbPanel: can't find superclass or interface javax.swing.Scrollable
  Warning:com.sun.pdfview.ThumbPanel: can't find superclass or interface java.awt.image.ImageObserver
  Warning:com.sun.pdfview.ThumbPanel$1: can't find superclass or interface java.awt.event.MouseAdapter
  Warning:com.sun.pdfview.colorspace.CMYKColorSpace: can't find superclass or interface java.awt.color.ColorSpace
  Warning:com.sun.pdfview.colorspace.CalGrayColor: can't find superclass or interface java.awt.color.ColorSpace
  Warning:com.sun.pdfview.colorspace.CalRGBColor: can't find superclass or interface java.awt.color.ColorSpace
  Warning:com.sun.pdfview.colorspace.LabColor: can't find superclass or interface java.awt.color.ColorSpace
  Warning:com.sun.pdfview.colorspace.MaskColorSpace: can't find superclass or interface java.awt.color.ColorSpace
  Warning:com.sun.pdfview.decode.MyTracker: can't find superclass or interface java.awt.image.ImageObserver
  Warning:com.sun.pdfview.pattern.PatternType1$1: can't find superclass or interface java.awt.Paint
  Warning:com.sun.pdfview.pattern.PatternType1$Type1PaintContext: can't find superclass or interface java.awt.PaintContext
  Warning:com.sun.pdfview.pattern.ShaderType2$Type2Paint: can't find superclass or interface java.awt.Paint
  Warning:com.sun.pdfview.pattern.ShaderType2$Type2PaintContext: can't find superclass or interface java.awt.PaintContext
  Warning:test.FontToy: can't find superclass or interface javax.swing.JPanel
  Warning:test.FontToy$1: can't find superclass or interface java.awt.event.ItemListener
  Warning:test.FontToy$2: can't find superclass or interface java.awt.event.ItemListener
  Warning:test.FontToy$3: can't find superclass or interface java.awt.event.KeyAdapter
  Warning:test.FontToy$4: can't find superclass or interface java.awt.event.WindowAdapter
  Warning:test.FontToy$5: can't find superclass or interface java.awt.event.ActionListener
  Warning:test.FontToy$6: can't find superclass or interface javax.swing.event.ChangeListener
  Warning:test.FontToy$7: can't find superclass or interface javax.swing.filechooser.FileFilter
  Warning:test.TTFTest$1: can't find superclass or interface java.awt.event.WindowAdapter
  Warning:test.TestType1CFont: can't find superclass or interface javax.swing.JPanel
  Warning:test.TestType1CFont: can't find superclass or interface java.awt.event.KeyListener
  Warning:com.sun.pdfview.Cache: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsEnvironment
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsConfiguration
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.Container
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced method 'void dispose()' in program class com.sun.pdfview.FullScreenWindow$PickMe
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsEnvironment
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsConfiguration
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.Container
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class javax.swing.JComponent
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsEnvironment
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.DisplayMode
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsConfiguration
  Warning:com.sun.pdfview.FullScreenWindow: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced method 'void setUndecorated(boolean)' in program class com.sun.pdfview.FullScreenWindow$PickMe
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class javax.swing.JButton
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class javax.swing.JButton
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Dimension
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class javax.swing.JButton
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced method 'java.awt.Container getContentPane()' in program class com.sun.pdfview.FullScreenWindow$PickMe
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Container
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced method 'void pack()' in program class com.sun.pdfview.FullScreenWindow$PickMe
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.GraphicsConfiguration
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Rectangle
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced method 'void setLocation(int,int)' in program class com.sun.pdfview.FullScreenWindow$PickMe
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced method 'void setVisible(boolean)' in program class com.sun.pdfview.FullScreenWindow$PickMe
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class javax.swing.JFrame
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Dimension
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Container
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.GraphicsConfiguration
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Rectangle
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.GraphicsDevice
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class javax.swing.JButton
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Dimension
  Warning:com.sun.pdfview.FullScreenWindow$PickMe: can't find referenced class java.awt.Rectangle
  Warning:com.sun.pdfview.FullScreenWindow$PickMe$1: can't find referenced class java.awt.event.ActionListener
  Warning:com.sun.pdfview.FullScreenWindow$PickMe$1: can't find referenced class java.awt.event.ActionEvent
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.ImageInfo: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.OutlineNode: can't find referenced class javax.swing.tree.DefaultMutableTreeNode
  Warning:com.sun.pdfview.OutlineNode: can't find referenced method 'java.lang.Object getUserObject()' in program class com.sun.pdfview.OutlineNode
  Warning:com.sun.pdfview.OutlineNode: can't find referenced method 'void setUserObject(java.lang.Object)' in program class com.sun.pdfview.OutlineNode
  Warning:com.sun.pdfview.OutlineNode: can't find referenced class javax.swing.tree.DefaultMutableTreeNode
  Warning:com.sun.pdfview.PDFChangeStrokeCmd: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFCmd: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFFile: can't find referenced method 'void add(javax.swing.tree.MutableTreeNode)' in program class com.sun.pdfview.OutlineNode
  Warning:com.sun.pdfview.PDFFile: can't find referenced method 'javax.swing.tree.TreeNode getParent()' in program class com.sun.pdfview.OutlineNode
  Warning:com.sun.pdfview.PDFFile: can't find referenced class java.awt.geom.Rectangle2D$Double
  Warning:com.sun.pdfview.PDFFile: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFFillAlphaCmd: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFFillPaintCmd: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.DataBufferByte
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.DataBufferInt
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.PackedColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorConvertOp
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.color.ColorSpace
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorConvertOp
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageIO
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageReader
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageIO
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageReader
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageReadParam
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.Point
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageReadParam
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageReader
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.RasterFormatException
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.IndexColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.color.ICC_ColorSpace
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.IndexColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.color.ColorSpace
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageIO
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.color.ColorSpace
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorConvertOp
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageReadParam
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.SampleModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class javax.imageio.ImageReader
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.RasterFormatException
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.IndexColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.DataBuffer
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.SampleModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorConvertOp
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorModel
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.color.ColorSpace
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.WritableRaster
  Warning:com.sun.pdfview.PDFImage: can't find referenced class java.awt.image.ColorModel
  Warning:com.sun.pdfview.PDFImage$DecodeComponentColorModel: can't find referenced method 'int getAlpha(java.lang.Object)' in program class com.sun.pdfview.PDFImage$DecodeComponentColorModel
  Warning:com.sun.pdfview.PDFImage$DecodeComponentColorModel: can't find referenced class java.awt.color.ColorSpace
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.ComponentColorModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced field 'int pixel_bits' in program class com.sun.pdfview.PDFImage$PdfComponentColorModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced method 'int getNumComponents()' in program class com.sun.pdfview.PDFImage$PdfComponentColorModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.PixelInterleavedSampleModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced method 'int getTransferType()' in program class com.sun.pdfview.PDFImage$PdfComponentColorModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.PixelInterleavedSampleModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced method 'int getPixelSize()' in program class com.sun.pdfview.PDFImage$PdfComponentColorModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.MultiPixelPackedSampleModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.SampleModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.ComponentColorModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.SampleModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.color.ColorSpace
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.SampleModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.SampleModel
  Warning:com.sun.pdfview.PDFImage$PdfComponentColorModel: can't find referenced class java.awt.image.Raster
  Warning:com.sun.pdfview.PDFImageCmd: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D$Double
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.Dimension
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.AffineTransform
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.AffineTransform
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.Dimension
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.image.ImageObserver
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.Image
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.image.ImageObserver
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.image.ImageObserver
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.Image
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.image.ImageObserver
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.image.BufferedImage
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.AffineTransform
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.AffineTransform
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.AffineTransform
  Warning:com.sun.pdfview.PDFPage: can't find referenced class java.awt.geom.GeneralPath
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Graphics2D
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.geom.GeneralPath
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Shape
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Graphics2D
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.geom.GeneralPath
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Shape
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Paint
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Color
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Paint
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Graphics2D
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.geom.GeneralPath
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.geom.Rectangle2D
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.Graphics2D
  Warning:com.sun.pdfview.PDFPaint: can't find referenced class java.awt.geom.GeneralPath
  </code></pre>
  
  <p><strong>Proguard:</strong> </p>
  
  <pre><code>    #keep json classes                
   -keepclassmembernames class * extends com.applozic.mobicommons.json.JsonMarker {
      !static !transient &lt;fields&gt;;
   }
  
   -keepclassmembernames class * extends com.applozic.mobicommons.json.JsonParcelableMarker {
      !static !transient &lt;fields&gt;;
   }
   #GSON Config          
  -keepattributes Signature          
  -keep class sun.misc.Unsafe { *; }           
  -keep class com.google.gson.examples.android.model.** { *; }            
  -keep class org.eclipse.paho.client.mqttv3.logging.JSR47Logger { *; } 
  -keep class android.support.** { *; }
  -keep interface android.support.** { *; }
  
  -dontwarn sun.misc.Unsafe.**
  -dontwarn com.google.gson.examples.android.model.**
  -dontwarn org.eclipse.paho.client.mqttv3.logging.JSR47Logger.**
  -dontwarn android.support.**
  -dontwarn android.support.**
  
  -keep class com.sun.pdfview.**{ *; } 
  -dontwarn com.sun.pdfview.** 
  
  -keep class test.**{ *; }
  -dontwarn test.**
  </code></pre>
  
  <p>Build: </p>
  
  <pre><code>release {
              debuggable false
              minifyEnabled true
              shrinkResources true
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
          debug {
              debuggable true
              minifyEnabled true
              shrinkResources true
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
  </code></pre>
  
  <p>I have enabled the proguard file in debug mode just for testing. I am able to figure out what went wrong. </p>
  
  <p>Using Applozic chat gradle dependency as well.</p>
  
  <p>Edit:- updated Proguard file. </p>