Example usage for org.json JSONObject getJSONArray

List of usage examples for org.json JSONObject getJSONArray

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Introduction

In this page you can find the example usage for org.json JSONObject getJSONArray.

Prototype

public JSONArray getJSONArray(String key) throws JSONException

Source Link

Document

Get the JSONArray value associated with a key.

Usage

From source file:com.cssweb.android.view.KlineViewSingle.java

public void drawOBV(Canvas canvas, JSONObject quoteData, int begin, int count, double shapeWidth,
        double spaceWidth, double highPrice, double lowPrice, double highVolume, int actualDataLen)
        throws JSONException {
    //      this.shapeWidth = shapeWidth;
    //      this.spaceWidth = spaceWidth;
    if (quoteData.isNull("OBV") || quoteData.getJSONArray("OBV").length() < 1) {
        isNetworkErrorDisplay();/*from w  ww . j a  v a2 s.c  o  m*/
        return;
    }
    long max = 1;
    long min = 99999999999999l;
    long obv, maobv;
    int len = quoteData.getJSONArray("OBV").length();
    for (int i = begin; i < (begin + count) && i < len; i++) {
        obv = quoteData.getJSONArray("OBV").getJSONArray(i).getLong(1);
        maobv = quoteData.getJSONArray("OBV").getJSONArray(i).getLong(2);
        max = Arith.max(obv, maobv, max);
        min = Arith.min(obv, maobv, min);
    }
    max = max + (max - min) / 10;
    min = min - (max - min) / 10;
    double scale = (double) (this.volumeHeight) / (max - min);

    int startX = klineX;
    int startY = klineY;

    double AxisLabelVolume = max;
    String lblvalue = "12345";
    int ratiolen = String.valueOf(Math.round(AxisLabelVolume)).length() - String.valueOf(lblvalue).length();

    String labelRatio = "";
    int scaleVol = 1;
    switch (ratiolen) {
    case 1:
        labelRatio = "x10";
        scaleVol = 10;
        break;
    case 2:
        labelRatio = "x100";
        scaleVol = 100;
        break;
    case 3:
        labelRatio = "x1000";
        scaleVol = 1000;
        break;
    case 4:
        labelRatio = "x10000";
        scaleVol = 10000;
        break;
    case 5:
        labelRatio = "x1";
        scaleVol = 1000000;
        break;
    case 6:
        labelRatio = "x1";
        scaleVol = 1000000;
        break;
    default:
        labelRatio = "x1";
        scaleVol = 1;
        break;
    }

    int axisY1 = (int) (startY + volumeHeight - (max - min) * scale);
    paint.setColor(GlobalColor.clrLine);
    Graphics.drawDashline(canvas, startX, axisY1, width, axisY1, paint);

    String axisLabel1 = String.valueOf((int) max / scaleVol);

    int axisY2 = (int) (startY + volumeHeight - (max - min) * 3 / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY2, width, axisY2, paint);

    String axisLabel2 = String.valueOf((int) (min + (max - min) * 3 / 4) / scaleVol);

    int axisY3 = (int) (startY + volumeHeight - (max - min) * 2 / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY3, width, axisY3, paint);

    String axisLabel3 = String.valueOf((int) (min + (max - min) * 2 / 4) / scaleVol);

    int axisY4 = (int) (startY + volumeHeight - (max - min) / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY4, width, axisY4, paint);

    String axisLabel4 = String.valueOf((int) (min + (max - min) * 1 / 4) / scaleVol);

    if (isTrackStatus == false) {
        tPaint.setColor(GlobalColor.colorKlabel);
        canvas.drawText(labelRatio, startX - tips / 4, startY + volumeHeight + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel1, startX - tips / 4, axisY1 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel2, startX - tips / 4, axisY2 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel3, startX - tips / 4, axisY3 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel4, startX - tips / 4, axisY4 + axisLabelHeight / 2, tPaint);
    }
    canvas.drawLine(startX, height - axisLabelHeight, width, height - axisLabelHeight, paint);

    if (quoteData != null) {
        double currX = 0, currY1 = 0, currY2 = 0;//???
        double nextX = 0, nextY1 = 0, nextY2 = 0;//??

        int kHeight = 0;

        for (int i = begin; i < (begin + count) && i < len; i++) {
            obv = quoteData.getJSONArray("OBV").getJSONArray(i).getLong(1);
            maobv = quoteData.getJSONArray("OBV").getJSONArray(i).getLong(2);

            startX = klineX;

            if ((i - begin) == 0) {
                currX = 0;
                currX = nextX = currX + startX + spaceWidth + shapeWidth / 2;
                kHeight = (int) ((obv - min) * scale);
                currY1 = nextY1 = startY + volumeHeight - kHeight;
                kHeight = (int) ((maobv - min) * scale);
                currY2 = nextY2 = startY + volumeHeight - kHeight;
            } else {
                nextX = currX + spaceWidth + shapeWidth;
            }
            // obv
            kHeight = (int) ((obv - min) * scale);
            nextY1 = startY + volumeHeight - kHeight;
            paint.setColor(GlobalColor.colorM5);
            canvas.drawLine((int) currX, (int) currY1, (int) nextX, (int) nextY1, paint);

            // maobv
            kHeight = (int) ((maobv - min) * scale);
            nextY2 = startY + volumeHeight - kHeight;
            paint.setColor(GlobalColor.colorM10);
            canvas.drawLine((int) currX, (int) currY2, (int) nextX, (int) nextY2, paint);

            currX = nextX;
            currY1 = nextY1;
            currY2 = nextY2;

            if (i == (begin + count - 1)) {

            }
        } // end for
    } // end if
}

From source file:com.cssweb.android.view.KlineViewSingle.java

public void drawROC(Canvas canvas, JSONObject quoteData, int begin, int count, double shapeWidth,
        double spaceWidth, double highPrice, double lowPrice, double highVolume, int actualDataLen,
        String indicator) throws JSONException {
    this.shapeWidth = shapeWidth;
    this.spaceWidth = spaceWidth;
    if (quoteData.isNull(indicator) || quoteData.getJSONArray(indicator).length() < 1) {
        isNetworkErrorDisplay();// ww w.j a v  a  2 s.  co  m
        return;
    }
    double max = 0.001;
    double min = 9999999999f;
    double wr = 0, wr2 = 0;
    int len = quoteData.getJSONArray(indicator).length();
    for (int i = begin; i < (begin + count) && i < len; i++) {
        wr = quoteData.getJSONArray(indicator).getJSONArray(i).getDouble(1);
        wr2 = quoteData.getJSONArray(indicator).getJSONArray(i).getDouble(2);
        max = Arith.max(wr, wr2, max);
        min = Arith.min(wr, wr2, min);
    }
    max = max * 1.1;
    min = min - Math.abs(min) * 0.1;
    double scale = (double) (this.volumeHeight) / (max - min);

    int startX = klineX;
    int startY = klineY;

    double AxisLabelVolume = max;
    String lblvalue = "12345";
    int ratiolen = String.valueOf(Math.round(AxisLabelVolume)).length() - String.valueOf(lblvalue).length();

    String labelRatio = "";
    int scaleVol = 1;
    switch (ratiolen) {
    case 1:
        labelRatio = "x10";
        scaleVol = 10;
        break;
    case 2:
        labelRatio = "x100";
        scaleVol = 100;
        break;
    case 3:
        labelRatio = "x1000";
        scaleVol = 1000;
        break;
    case 4:
        labelRatio = "x10000";
        scaleVol = 10000;
        break;
    default:
        labelRatio = "";
        scaleVol = 1;
        break;
    }

    int axisY1 = (int) (startY + volumeHeight - (max - min) * scale);
    paint.setColor(GlobalColor.clrLine);
    Graphics.drawDashline(canvas, startX, axisY1, width, axisY1, paint);

    String axisLabel1 = Utils.dataFormation(max / scaleVol, 1);

    int axisY2 = (int) (startY + volumeHeight - (max - min) * 3 / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY2, width, axisY2, paint);

    String axisLabel2 = Utils.dataFormation((min + (max - min) * 3 / 4) / scaleVol, 1);

    int axisY3 = (int) (startY + volumeHeight - (max - min) * 2 / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY3, klineX + klineWidth, axisY3, paint);

    String axisLabel3 = Utils.dataFormation((min + (max - min) * 2 / 4) / scaleVol, 1);

    int axisY4 = (int) (startY + volumeHeight - (max - min) / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY4, klineX + klineWidth, axisY4, paint);

    String axisLabel4 = Utils.dataFormation((min + (max - min) * 1 / 4) / scaleVol, 1);

    if (isTrackStatus == false) {
        tPaint.setColor(GlobalColor.colorKlabel);
        canvas.drawText(labelRatio, startX - tips / 4, startY + volumeHeight + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel1, startX - tips / 4, axisY1 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel2, startX - tips / 4, axisY2 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel3, startX - tips / 4, axisY3 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel4, startX - tips / 4, axisY4 + axisLabelHeight / 2, tPaint);
    }

    canvas.drawLine(startX, height - axisLabelHeight, width, height - axisLabelHeight, paint);

    if (quoteData != null) {
        double currX = 0, currY1 = 0, currY2 = 0;//???
        double nextX = 0, nextY1 = 0, nextY2 = 0;//??

        int kHeight = 0;

        for (int i = begin; i < (begin + count) && i < len; i++) {
            wr = quoteData.getJSONArray(indicator).getJSONArray(i).getDouble(1);
            wr2 = quoteData.getJSONArray(indicator).getJSONArray(i).getDouble(2);

            if ((i - begin) == 0) {
                currX = startX;
                currX = nextX = currX + spaceWidth + shapeWidth / 2;
                kHeight = (int) ((wr - min) * scale);
                currY1 = nextY1 = startY + volumeHeight - kHeight;

                kHeight = (int) ((wr2 - min) * scale);
                currY2 = nextY2 = startY + volumeHeight - kHeight;
            } else {
                nextX = currX + spaceWidth + shapeWidth;
                kHeight = (int) ((wr - min) * scale);
                nextY1 = startY + volumeHeight - kHeight;

                kHeight = (int) ((wr2 - min) * scale);
                nextY2 = startY + volumeHeight - kHeight;
            }
            paint.setColor(GlobalColor.colorM5);
            canvas.drawLine((float) currX, (float) currY1, (float) nextX, (float) nextY1, paint);

            paint.setColor(GlobalColor.colorM10);
            canvas.drawLine((float) currX, (float) currY2, (float) nextX, (float) nextY2, paint);

            currX = nextX;
            currY1 = nextY1;
            currY2 = nextY2;

            if (i == (begin + count - 1)) {

            }
        } // end for
    } // end if
}

From source file:com.cssweb.android.view.KlineViewSingle.java

public void drawOther(Canvas canvas, JSONObject quoteData, int begin, int count, double shapeWidth,
        double spaceWidth, double highPrice, double lowPrice, double highVolume, int actualDataLen,
        String indicator) throws JSONException {
    this.shapeWidth = shapeWidth;
    this.spaceWidth = spaceWidth;
    if (quoteData.isNull(indicator) || quoteData.getJSONArray(indicator).length() < 1) {
        isNetworkErrorDisplay();/*  ww w  . j a v  a  2  s  .co m*/
        return;
    }
    double max = 0.001;
    double min = 9999999999f;
    double wr = 0, wr2 = 0;
    int len = quoteData.getJSONArray(indicator).length();
    for (int i = begin; i < (begin + count) && i < len; i++) {
        wr = quoteData.getJSONArray(indicator).getJSONArray(i).getDouble(1);
        wr2 = quoteData.getJSONArray(indicator).getJSONArray(i).getDouble(2);
        max = Arith.max(wr, wr2, max);
        min = Arith.min(wr, wr2, min);
    }
    max = max + (max - min) / 10;
    min = min - (max - min) / 10;
    double scale = (double) (this.volumeHeight) / (max - min);

    int startX = klineX;
    int startY = klineY;

    double AxisLabelVolume = max;
    String lblvalue = "12345";
    int ratiolen = String.valueOf(Math.round(AxisLabelVolume)).length() - String.valueOf(lblvalue).length();

    String labelRatio = "";
    int scaleVol = 1;
    switch (ratiolen) {
    case 1:
        labelRatio = "x10";
        scaleVol = 10;
        break;
    case 2:
        labelRatio = "x100";
        scaleVol = 100;
        break;
    case 3:
        labelRatio = "x1000";
        scaleVol = 1000;
        break;
    case 4:
        labelRatio = "x10000";
        scaleVol = 10000;
        break;
    default:
        labelRatio = "";
        scaleVol = 1;
        break;
    }

    int axisY1 = (int) (startY + volumeHeight - (max - min) * scale);
    paint.setColor(GlobalColor.clrLine);
    Graphics.drawDashline(canvas, startX, axisY1, width, axisY1, paint);

    String axisLabel1 = String.valueOf((int) max / scaleVol);

    int axisY2 = (int) (startY + volumeHeight - (max - min) * 3 / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY2, width, axisY2, paint);

    String axisLabel2 = String.valueOf((int) (min + (max - min) * 3 / 4) / scaleVol);

    int axisY3 = (int) (startY + volumeHeight - (max - min) * 2 / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY3, klineX + klineWidth, axisY3, paint);

    String axisLabel3 = String.valueOf((int) (min + (max - min) * 2 / 4) / scaleVol);

    int axisY4 = (int) (startY + volumeHeight - (max - min) / 4 * scale);
    Graphics.drawDashline(canvas, startX, axisY4, klineX + klineWidth, axisY4, paint);

    String axisLabel4 = String.valueOf((int) (min + (max - min) * 1 / 4) / scaleVol);

    if (isTrackStatus == false) {
        tPaint.setColor(GlobalColor.colorKlabel);
        canvas.drawText(labelRatio, startX - tips / 4, startY + volumeHeight + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel1, startX - tips / 4, axisY1 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel2, startX - tips / 4, axisY2 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel3, startX - tips / 4, axisY3 + axisLabelHeight / 2, tPaint);
        canvas.drawText(axisLabel4, startX - tips / 4, axisY4 + axisLabelHeight / 2, tPaint);
    }

    canvas.drawLine(startX, height - axisLabelHeight, width, height - axisLabelHeight, paint);

    if (quoteData != null) {
        double currX = 0, currY1 = 0, currY2 = 0;//???
        double nextX = 0, nextY1 = 0, nextY2 = 0;//??

        int kHeight = 0;

        for (int i = begin; i < (begin + count) && i < len; i++) {
            wr = quoteData.getJSONArray(indicator).getJSONArray(i).getLong(1);
            wr2 = quoteData.getJSONArray(indicator).getJSONArray(i).getLong(2);

            if ((i - begin) == 0) {
                currX = startX;
                currX = nextX = currX + spaceWidth + shapeWidth / 2;
                kHeight = (int) ((wr - min) * scale);
                currY1 = nextY1 = startY + volumeHeight - kHeight;

                kHeight = (int) ((wr2 - min) * scale);
                currY2 = nextY2 = startY + volumeHeight - kHeight;
            } else {
                nextX = currX + spaceWidth + shapeWidth;
                kHeight = (int) ((wr - min) * scale);
                nextY1 = startY + volumeHeight - kHeight;

                kHeight = (int) ((wr2 - min) * scale);
                nextY2 = startY + volumeHeight - kHeight;
            }
            paint.setColor(GlobalColor.colorM5);
            canvas.drawLine((float) currX, (float) currY1, (float) nextX, (float) nextY1, paint);

            paint.setColor(GlobalColor.colorM10);
            canvas.drawLine((float) currX, (float) currY2, (float) nextX, (float) nextY2, paint);

            currX = nextX;
            currY1 = nextY1;
            currY2 = nextY2;

            if (i == (begin + count - 1)) {

            }
        } // end for
    } // end if
}

From source file:ai.susi.mind.SusiReader.java

public SusiReader learn(JSONObject json) {

    // initialize temporary json objects
    JSONObject syn = json.has("synonyms") ? json.getJSONObject("synonyms") : new JSONObject();
    JSONArray fill = json.has("filler") ? json.getJSONArray("filler") : new JSONArray();
    JSONObject cat = json.has("categories") ? json.getJSONObject("categories") : new JSONObject();

    // add synonyms
    for (String canonical : syn.keySet()) {
        JSONArray a = syn.getJSONArray(canonical);
        a.forEach(synonym -> synonyms.put(((String) synonym).toLowerCase(), canonical));
    }/*from  w  w  w  .j av a 2s .c  om*/

    // add filler
    fill.forEach(word -> filler.add((String) word));

    // add categories
    for (String canonical : cat.keySet()) {
        JSONArray a = cat.getJSONArray(canonical);
        a.forEach(synonym -> categories.put(((String) synonym).toLowerCase(), canonical));
    }

    return this;
}

From source file:org.loklak.api.iot.OpenWifiMapPushServlet.java

@Override
protected JSONArray extractMessages(JSONObject data) {
    return data.getJSONArray("rows");
}

From source file:br.com.indigo.android.facebook.SocialFacebook.java

private void handleFeedResponse(JSONObject jsonResponse, FeedListener listener) {
    FbSimplePost post;// w w  w. ja va 2 s.co m
    ArrayList<FbSimplePost> posts = new ArrayList<FbSimplePost>();

    try {
        JSONArray objs = jsonResponse.getJSONArray("data");

        for (int i = 0; i < objs.length(); i++) {
            JSONObject obj = objs.getJSONObject(i);

            post = new FbSimplePost();
            post.setId(obj.getString("id"));

            JSONObject fromJson = obj.optJSONObject("from");
            if (fromJson != null) {
                FbSimpleUser from = new FbSimpleUser();
                from.setId(fromJson.getString("id"));
                from.setName(fromJson.getString("name"));

                post.setFrom(from);
            }

            post.setMessage(obj.optString("message"));
            post.setPicture(obj.optString("picture"));
            post.setLink(obj.optString("link"));
            post.setName(obj.optString("name"));
            post.setCaption(obj.optString("caption"));
            post.setDescription(obj.optString("description"));
            post.setSource(obj.optString("source"));
            post.setType(obj.optString("type"));

            post.setCreatedTime(new Date(obj.getLong("created_time")));
            post.setUpdatedTime(new Date(obj.getLong("updated_time")));

            JSONObject comments = obj.optJSONObject("comments");
            if (comments != null) {
                post.setNumberOfComments(comments.getInt("count"));
            }

            JSONObject likes = obj.optJSONObject("likes");
            if (likes != null) {
                post.setNumberOfLikes(likes.getInt("count"));
            }

            posts.add(post);
        }

        String nextPage = null;
        JSONObject paging = jsonResponse.optJSONObject("paging");
        if (paging != null) {
            nextPage = paging.optString("next");
        }

        listener.onComplete(posts, nextPage);

    } catch (JSONException e) {
        Util.logd(TAG, "Could not parse Json response", e);
        listener.onFail(e);
    }
}

From source file:br.com.indigo.android.facebook.SocialFacebook.java

private void handleUsersResponse(JSONObject jsonResponse, UsersListener listener) {

    FbSimpleUser user = null;//from  w  w  w . j a  va  2 s.  co  m
    ArrayList<FbSimpleUser> friends = new ArrayList<FbSimpleUser>();

    try {
        JSONArray objs = jsonResponse.getJSONArray("data");

        for (int i = 0; i < objs.length(); i++) {
            JSONObject obj = objs.getJSONObject(i);

            user = new FbSimpleUser();
            user.setId(obj.getString("id"));
            user.setName(obj.getString("name"));

            String rsvpStatus = obj.optString("rsvp_status");

            if (rsvpStatus != null) {
                if (rsvpStatus.equals("not_replied")) {
                    user.setRSVPStatus(RSVP_STATUS.NOT_REPLIED);
                } else if (rsvpStatus.equals("attending")) {
                    user.setRSVPStatus(RSVP_STATUS.ATTENDING);
                } else if (rsvpStatus.equals("declined")) {
                    user.setRSVPStatus(RSVP_STATUS.DECLINED);
                } else if (rsvpStatus.equals("unsure")) {
                    user.setRSVPStatus(RSVP_STATUS.MAYBE);
                }
            }

            friends.add(user);
        }

        String nextPage = null;
        JSONObject paging = jsonResponse.optJSONObject("paging");
        if (paging != null) {
            nextPage = paging.optString("next");
        }

        listener.onComplete(friends, nextPage);

    } catch (JSONException e) {
        Util.logd(TAG, "Could not parse Json response", e);
        listener.onFail(e);
    }
}

From source file:br.com.indigo.android.facebook.SocialFacebook.java

private void handleEventsResponse(JSONObject jsonResponse, EventsListener listener) {

    ArrayList<FbEvent> events = new ArrayList<FbEvent>();

    try {/*from w  ww  . jav  a  2  s .c  o m*/
        JSONArray objs = jsonResponse.getJSONArray("data");

        for (int i = 0; i < objs.length(); i++) {
            JSONObject obj = objs.getJSONObject(i);

            events.add(parseEvent(obj));
        }

        String nextPage = null;
        JSONObject paging = jsonResponse.optJSONObject("paging");
        if (paging != null) {
            nextPage = paging.optString("next");
        }

        listener.onComplete(events, nextPage);

    } catch (JSONException e) {
        Util.logd(TAG, "Could not parse Json response", e);
        listener.onFail(e);
    }
}

From source file:br.com.indigo.android.facebook.SocialFacebook.java

private void handleCommentsResponse(JSONObject jsonResponse, CommentsListener listener) {

    FbComment comment = null;// w  w  w  . ja va 2s  .  co m
    ArrayList<FbComment> comments = new ArrayList<FbComment>();

    try {
        JSONArray objs = jsonResponse.getJSONArray("data");

        for (int i = 0; i < objs.length(); i++) {
            JSONObject obj = objs.getJSONObject(i);

            comment = new FbComment();
            comment.setId(obj.getString("id"));
            comment.setMessage(obj.optString("message"));
            comment.setCreatedTime(new Date(obj.optLong("created_time") * 1000));
            comment.setNumberOfLikes(obj.optInt("likes"));

            JSONObject fromJson = obj.optJSONObject("from");
            if (fromJson != null) {
                FbSimpleUser fromUser = new FbSimpleUser();
                fromUser.setId(fromJson.getString("id"));
                fromUser.setName(fromJson.optString("name"));

                comment.setFrom(fromUser);
            }

            comments.add(comment);
        }

        String nextPage = null;
        JSONObject paging = jsonResponse.optJSONObject("paging");
        if (paging != null) {
            nextPage = paging.optString("next");
        }

        listener.onComplete(comments, nextPage);

    } catch (JSONException e) {
        Util.logd(TAG, "Could not parse Json response", e);
        listener.onFail(e);
    }
}

From source file:com.ledger.android.u2f.bridge.MainActivity.java

private U2FContext parseU2FContextSign(JSONObject json) {
    try {/* ww  w  . j a va 2s .  co  m*/
        String appId = json.getString(TAG_JSON_APPID);
        byte[] challenge = Base64.decode(json.getString(TAG_JSON_CHALLENGE), Base64.URL_SAFE);
        int requestId = json.getInt(TAG_JSON_REQUESTID);
        JSONArray array = json.getJSONArray(TAG_JSON_REGISTERED_KEYS);
        Vector<byte[]> keyHandles = new Vector<byte[]>();
        for (int i = 0; i < array.length(); i++) {
            JSONObject keyHandleItem = array.getJSONObject(i);
            if (!keyHandleItem.getString(TAG_JSON_VERSION).equals(VERSION_U2F_V2)) {
                Log.e(TAG, "Invalid handle version");
                return null;
            }
            byte[] keyHandle = Base64.decode(keyHandleItem.getString(TAG_JSON_KEYHANDLE), Base64.URL_SAFE);
            keyHandles.add(keyHandle);
        }
        return new U2FContext(appId, challenge, keyHandles, requestId, true);
    } catch (JSONException e) {
        Log.e(TAG, "Error decoding request");
        return null;
    }
}