java.lang.UnsupportedOperationException

java.lang.UnsupportedOperationException

occur : GLES20CANVAS.clipPath()

reason : 기기가 하드웨어 가속을 지원하지 않음

solution : ImageView.setLayerType(View.LAYER_TYPE_SOFTWARE, null); 

reference : 

1. https://plus.google.com/+SewonAnn/posts/UMDdYQVgXbA

2. http://stackoverflow.com/questions/7401319/use-hardwareacceleration-flag-with-canvas-clippath