4 Replies Latest reply on Apr 22, 2016 9:48 AM by Intel Corporation

    Error android.graphics.Canvas.throwIfRecycled when overlaying bitmaps

      Im trying to overlay images on a canvas using the following method:

      private Bitmap overlay(Bitmap bmp1, Bitmap bmp2) {

          bmOverlay = Bitmap.createBitmap(70, 70, Bitmap.Config.RGB_565);
          canvas = new Canvas(bmOverlay);
          canvas.drawBitmap(bmp1, 0, 0, null);  //line 179
          canvas.drawBitmap(bmp2, 0, 0, null);
          return bmOverlay;          
      }
      However, my app keeps crashing and the log reads:

      java.lang.NullPointerException at android.graphics.Canvas.throwIfRecycled(Canvas.java:954) at android.graphics.Canvas.drawBitmap(Canvas.java:980) at com.MyApp.overlay(MyApp.java:179)

      Can anyone help?