修改名称。
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package com.xscm.moduleutil.service;
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import android.content.Context;
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import android.os.Handler;
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import android.os.Looper;
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import android.util.Log;
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import android.widget.Toast;
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import com.blankj.utilcode.util.LogUtils;
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import com.google.android.gms.common.api.Api;
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import com.hjq.toast.ToastUtils;
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import com.xscm.moduleutil.utils.logger.DataLogger;
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import org.eclipse.paho.client.mqttv3.MqttClient;
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import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
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import org.eclipse.paho.client.mqttv3.MqttDeliveryToken;
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import org.eclipse.paho.client.mqttv3.MqttException;
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import org.eclipse.paho.client.mqttv3.MqttMessage;
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import org.eclipse.paho.client.mqttv3.MqttTopic;
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import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
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import java.util.ArrayList;
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public class MqttConnect {
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private String HOST;
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private String Tag = "MQTT";
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private String clientId = "";
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private static MqttClient mqttClient = null;
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private Context context;
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// 订阅主题
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public static String shutdown = "";
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public static String update_app = "";
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public static String qx_hour_ranking = "";
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public static String qx_redpacket_arrive="";//红包飘屏的主题
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Handler handler = new Handler(Looper.getMainLooper());
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String[] topic;
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int[] qos = {1,2,3,0,0,0,0,0,0,0,0,0,0}; // 消息质量
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private static MqttConnect instance;
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public MqttConnect(Context context, String host, String clientId) {
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this.HOST = host;
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this.context = context;
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this.clientId = clientId;
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// 这里是你自己需要订阅的主题
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shutdown = "qx_room_topic"; // 关机
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update_app = "qx_xunlehui"; // 发送更新APP
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// qx_hour_ranking = "qx_hour_ranking";
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qx_hour_ranking = "qx_hour_ranking";
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qx_redpacket_arrive="qx_redpacket_arrive";
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ArrayList<String> topicList = new ArrayList<>();
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topicList.add(shutdown);
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topicList.add(update_app);
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topicList.add(qx_hour_ranking);
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topicList.add(qx_redpacket_arrive);
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topic = topicList.toArray(new String[0]);
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}
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/**
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* 单列模式,只能实例化一次
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* @param context
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* @param host
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* @param clientId
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* @return
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*/
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public static synchronized MqttConnect getInstance(Context context, String host, String clientId) {
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if (instance == null) {
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instance = new MqttConnect(context, host, clientId);
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}
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return instance;
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}
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/**
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* 客户端connect连接mqtt服务器
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**/
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public void mqttClient()
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{
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// close();
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// handler.postDelayed(new Runnable() {
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// @Override
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// public void run() {
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try {
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// uiTip("MQTT开始连接");
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MqttConnectOptions options = mqttConnectOptions();
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mqttClient.setCallback(new MqttInitCallback(context, HOST, clientId));
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mqttClient.connect(options);
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// sub(topic,qos);
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sub(shutdown);
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sub(update_app);
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sub(qx_hour_ranking);
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sub(qx_redpacket_arrive);
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// uiTip("MQTT连接成功");
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}catch (MqttException e){
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// uiTip("MQTT连接失败,准备重连。。。："+e.getMessage());
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handler.postDelayed(new Runnable() {
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@Override
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public void run() {
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Log.e(Tag,"开始重连。。。");
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mqttClient();
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}
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},3000);
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}
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// }
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// },200);
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}
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/**
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* 在主线程弹出消息
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* @param msg
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*/
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private void uiTip(String msg){
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Log.d(Tag,msg);
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handler.post(new Runnable() {
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@Override
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public void run() {
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// Toast.makeText(context.getApplicationContext(), msg, Toast.LENGTH_SHORT).show();
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LogUtils.e("mqtt","连接成功");
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ToastUtils.show(msg);
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}
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});
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}
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/**
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* MQTT连接参数设置
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*/
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private MqttConnectOptions mqttConnectOptions()
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throws MqttException {
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mqttClient = new MqttClient(HOST, clientId, new MemoryPersistence());
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MqttConnectOptions options = new MqttConnectOptions();
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options.setUserName("public");
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options.setConnectionTimeout(10);
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options.setCleanSession(true);
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options.setConnectionTimeout(10);
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options.setKeepAliveInterval(10);
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return options;
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}
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/**
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* 关闭MQTT连接
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*/
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public void close(){
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if(mqttClient != null && mqttClient.isConnected()){
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try {
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mqttClient.close();
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mqttClient.disconnect();
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mqttClient = null;
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} catch (MqttException e) {
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Log.e(Tag,"关闭MQTT连接报错："+e.getMessage());
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// ToastUtils.show("关闭MQTT连接报错");
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}
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}else {
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Log.d(Tag,"Mqtt已关闭");
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}
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}
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/**
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* 向某个主题发布消息 默认qos：1
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*/
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public static void pub(String topic, String msg) throws MqttException {
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MqttMessage mqttMessage = new MqttMessage();
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mqttMessage.setPayload(msg.getBytes());
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MqttTopic mqttTopic = mqttClient.getTopic(topic);
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MqttDeliveryToken token = mqttTopic.publish(mqttMessage);
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token.waitForCompletion();
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}
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/**
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* 向某个主题发布消息
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*
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* @param topic: 发布的主题
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* @param msg: 发布的消息
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* @param qos: 消息质量 Qos：0、1、2
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*/
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public void pub(String topic, String msg, int qos) throws MqttException {
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MqttMessage mqttMessage = new MqttMessage();
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mqttMessage.setQos(qos);
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mqttMessage.setPayload(msg.getBytes());
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MqttTopic mqttTopic = mqttClient.getTopic(topic);
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MqttDeliveryToken token = mqttTopic.publish(mqttMessage);
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token.waitForCompletion();
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}
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/**
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* 订阅某一个主题 ，此方法默认的的Qos等级为：1
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*
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* @param topic 主题
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*/
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public void sub(String topic){
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try {
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mqttClient.subscribe(topic);
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} catch (MqttException e) {
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Log.e(Tag,"MQTT主题订阅失败：" + e.getMessage());
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// uiTip("MQTT主题订阅失败");
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}
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}
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/**
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* 订阅某一个主题，可携带Qos
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*
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* @param topic 所要订阅的主题
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* @param qos
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* 消息质量：0最多发送一次，不保证消息能够到达接收端，也不负责重发
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* 1至少发送一次，确保消息能够到达接收端，但可能会导致消息重复
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* 2确保消息恰好被接收一次
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*/
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public void sub(String[] topic, int[] qos){
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try {
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mqttClient.subscribe(topic, qos);
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}catch (MqttException e){
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Log.e(Tag,"订阅主题失败："+e.getMessage());
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}
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}
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// 原文链接：https://blog.csdn.net/Fyx1987496919/article/details/140516525
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}
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