EMClient.getInstance().chatManager().importMessages怎么插入图片或视频信息呢？

public static void importMessages() {

        List<EMMessage> messageList = new ArrayList<EMMessage>();

        try {

            JSONArray array = new JSONArray(getJson("ceshi.json"));

            Log.d("json", array.toString());

//            for (int i = 0; i < array.length(); i++) {

                JSONObject jsonObject = array.getJSONObject(0);

                long timestamp = jsonObject.optLong("timestamp");

                String from = jsonObject.optString("from");

                String to = jsonObject.optString("to");

                String msgId = jsonObject.optString("msg_id");

                String chatType = jsonObject.optString("chat_type");



                JSONObject bodyObject = jsonObject.optJSONObject("payload").optJSONArray("bodies").getJSONObject(0);

                String type = bodyObject.optString("type");

                EMMessage message = null;

                if (type.equals("txt")) {

                    message = EMMessage.createReceiveMessage(EMMessage.Type.TXT);

                    EMTextMessageBody body = new EMTextMessageBody(bodyObject.optString("msg"));

                    message.addBody(body);

                } else if (type.equals("img")) {

                    message = EMMessage.createReceiveMessage(EMMessage.Type.IMAGE);

                    File file = new File("");

                    // 这里使用反射获取 ImageBody，为了设置 size

                    Class<?> bodyClass = Class.forName("com.hyphenate.chat.EMImageMessageBody");

                    Class<?>[] parTypes = new Class<?>[1];

                    parTypes[0] = File.class;

                    Constructor<?> constructor = bodyClass.getDeclaredConstructor(parTypes);

                    Object[] pars = new Object[1];

                    pars[0] = file;

                    EMImageMessageBody body = (EMImageMessageBody) constructor.newInstance(pars);

                    Method setSize = Class.forName("com.hyphenate.chat.EMImageMessageBody")

                            .getDeclaredMethod("setSize", int.class, int.class);

                    setSize.setAccessible(true);

                    int width = bodyObject.optJSONObject("size").optInt("width");

                    int height = bodyObject.optJSONObject("size").optInt("height");

                    setSize.invoke(body, width, height);



                    body.setFileName(bodyObject.optString("filename"));

                    body.setSecret(bodyObject.optString("secret"));

                    body.setRemoteUrl(bodyObject.optString("url"));

                    body.setThumbnailUrl(bodyObject.optString("url"));

                    // to make it compatible with thumbnail received in previous version

                    String thumbPath = getThumbnailImagePath(bodyObject.optString("url"));

                    body.setThumbnailLocalPath(thumbPath);

                    String localPath = getLocalPath(bodyObject.optString("url"));

                    body.setLocalUrl(localPath);

                    Log.d("thumbPath", "send"+thumbPath);

                    message.addBody(body);

                }

                else if (type.equals("video")) {

                    message = EMMessage.createReceiveMessage(EMMessage.Type.VIDEO);

                    EMVideoMessageBody body = new EMVideoMessageBody();

                    body.setThumbnailUrl(bodyObject.optString("thumb"));

                    body.setThumbnailSecret(bodyObject.optString("thumb_secret"));

                    body.setRemoteUrl(bodyObject.optString("url"));

                    body.setVideoFileLength(bodyObject.optLong("file_length"));

                    body.setSecret(bodyObject.optString("secret"));

                    message.addBody(body);

                } else if (type.equals("audio")) {

                    message = EMMessage.createReceiveMessage(EMMessage.Type.VOICE);

                    File file = new File("");

                    EMVoiceMessageBody body = new EMVoiceMessageBody(file, bodyObject.optInt("length"));

                    body.setRemoteUrl(bodyObject.optString("url"));

                    body.setSecret(bodyObject.optString("secret"));

                    body.setFileName(bodyObject.optString("filename"));

                    message.addBody(body);

                }



                message.setFrom(from);

                message.setTo(to);

                message.setMsgTime(timestamp);

                message.setLocalTime(timestamp);

                message.setMsgId(msgId);

                if(chatType.equals("chat")){

                    message.setChatType(EMMessage.ChatType.Chat);

                } else if(chatType.equals("GroupChat")){

                    message.setChatType(EMMessage.ChatType.GroupChat);

                } else if(chatType.equals("ChatRoom")){

                    message.setChatType(EMMessage.ChatType.ChatRoom);

                }

                message.setStatus(EMMessage.Status.SUCCESS);

//                messageList.add(message);

//            }

//            Log.d("conversation1", EMClient.getInstance().chatManager().getAllConversations().size()+"");

            EMClient.getInstance().chatManager().saveMessage(message);