gistfile1.java

public class SkewedImageView extends ImageView {

    public SkewedImageView(Context context) {
        super(context);
        disableHwAcceleration();
    }

    public SkewedImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
        disableHwAcceleration();
    }


    public SkewedImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        disableHwAcceleration();
    }

    private void disableHwAcceleration() {
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            setLayerType(View.LAYER_TYPE_SOFTWARE, null);
        }
    }


    @Override
    protected void onDraw(Canvas canvas) {
        Drawable drawable = getDrawable();
        int drawableWidth = drawable.getIntrinsicWidth();
        int drawableHeight = drawable.getIntrinsicHeight();

        float triangleSize = drawableWidth * 0.25f;
        Path triangle = new Path();
        triangle.moveTo(0, 0);
        triangle.lineTo(drawableWidth - triangleSize, 0);
        triangle.lineTo(drawableWidth, triangleSize);
        triangle.lineTo(drawableWidth, drawableHeight);
        triangle.lineTo(0, drawableHeight);
        triangle.close();
        canvas.clipPath(triangle, Region.Op.REPLACE);

        super.onDraw(canvas);
    }

}