[Android] get cached image from Picasso and load it in webview

   public static Picasso getImageLoader(Context ctx) {
        if(sPicassoInstance == null) {
            Picasso.Builder builder = new Picasso.Builder(ctx);
            sTransformRequest = new Picasso.RequestTransformer() {
                @Override
                public Request transformRequest(Request request) {

                    Uri uri = request.uri;
                    if(uri.getScheme().startsWith("http")) {
                        String urlString = uri.toString();
                        String cachedURL = getCachedURL(urlString);
                        if(urlString != cachedURL) {
                            request = request.buildUpon().setUri(Uri.parse(cachedURL)).build();
                        }

                    }
                    return request;
                }
            };
            builder.requestTransformer(sTransformRequest);
            sCache = new LruCache(ctx);
            builder.memoryCache(sCache);

            sPicassoInstance = builder.build();

//            sPicassoInstance.setDebugging(true);

        }

        return sPicassoInstance;
    }

public static Bitmap getCachedImage(String imageUrl) {

        Bitmap bmp = null;
        if(sPicassoInstance != null) {
            if(sCache != null) {
                Uri uri = null;

                uri = Uri.parse(imageUrl);
                Request.Builder data = new Request.Builder(uri);
                Request finalData = sTransformRequest.transformRequest(data.build());
                String key = createKey(finalData, new StringBuilder());

                bmp = sCache.get(key);

            }
        }

        return bmp;
    }
    
    //copy createKey method from picasso util class
static String createKey(Request data, StringBuilder builder) {
        if (data.uri != null) {
            String path = data.uri.toString();
            builder.ensureCapacity(path.length() + 50);
            builder.append(path);
        } else {
            builder.ensureCapacity(50);
            builder.append(data.resourceId);
        }
        builder.append('\n');

        if (data.rotationDegrees != 0) {
            builder.append("rotation:").append(data.rotationDegrees);
            if (data.hasRotationPivot) {
                builder.append('@').append(data.rotationPivotX).append('x').append(data.rotationPivotY);
            }
            builder.append('\n');
        }
        if (data.targetWidth != 0) {
            builder.append("resize:").append(data.targetWidth).append('x').append(data.targetHeight);
            builder.append('\n');
        }
        if (data.centerCrop) {
            builder.append("centerCrop\n");
        } else if (data.centerInside) {
            builder.append("centerInside\n");
        }

        if (data.transformations != null) {
            //noinspection ForLoopReplaceableByForEach
            for (int i = 0, count = data.transformations.size(); i < count; i++) {
                builder.append(data.transformations.get(i).key());
                builder.append('\n');
            }
        }

        return builder.toString();
    }

//How to get a string representation and add it to the webview

           Bitmap bmp = getCachedImage("http://example.com/image.jpg");
            String result = news.getImage();
            if(bmp != null) {
                ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
                bmp.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
                byte[] byteArray = byteArrayOutputStream.toByteArray();
                String imgageBase64 = Base64.encodeToString(byteArray, Base64.DEFAULT);
                result = "data:image/png;base64," + imgageBase64;
            }
          htmlContent = "<img src=\"" + result + "\" />" ;
          //then simply load the htmlContent