apollo實現c#與android訊息推送(四)

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4  Android代碼只是為了實現功能，比較簡單，就只是貼出來  源碼

package com.myapps.mqtttest;import java.util.concurrent.Executors;import java.util.concurrent.ScheduledExecutorService;import java.util.concurrent.TimeUnit;import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;import org.eclipse.paho.client.mqttv3.MqttCallback;import org.eclipse.paho.client.mqttv3.MqttClient;import org.eclipse.paho.client.mqttv3.MqttConnectOptions;import org.eclipse.paho.client.mqttv3.MqttException;import org.eclipse.paho.client.mqttv3.MqttMessage;import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.provider.Settings;import android.view.KeyEvent;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {    private TextView resultTv;    private String mDeviceID;    private String host = "tcp://192.168.101.195:61613";    private String userName = "admin";    private String passWord = "password";    private Handler handler;    private MqttClient client;    private String myTopic = "test";    private MqttConnectOptions options;    private ScheduledExecutorService scheduler;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mDeviceID = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);        resultTv = (TextView) findViewById(R.id.result);        init();        handler = new Handler() {            @Override            public void handleMessage(Message msg) {                super.handleMessage(msg);                if(msg.what == 1) {                    Toast.makeText(MainActivity.this, (String) msg.obj,                            Toast.LENGTH_SHORT).show();                    System.out.println("-----------------------------");                } else if(msg.what == 2) {                    Toast.makeText(MainActivity.this, "串連成功", Toast.LENGTH_SHORT).show();                    try {                        client.subscribe(myTopic, 1);                    } catch (Exception e) {                        e.printStackTrace();                    }                } else if(msg.what == 3) {                    Toast.makeText(MainActivity.this, "串連失敗，正在重連", Toast.LENGTH_SHORT).show();                }            }        };        startReconnect();    }    private void startReconnect() {        scheduler = Executors.newSingleThreadScheduledExecutor();        scheduler.scheduleAtFixedRate(new Runnable() {            @Override            public void run() {                if(!client.isConnected()) {                    connect();                }            }        }, 0 * 1000, 10 * 1000, TimeUnit.MILLISECONDS);    }    private void init() {        try {            //host為主機名稱，test為clientid即串連MQTT的用戶端ID，一般以用戶端唯一識別碼表示，MemoryPersistence設定clientid的儲存形式，預設為以記憶體儲存            client = new MqttClient(host, "testandroid",                    new MemoryPersistence());            //MQTT的串連設定            options = new MqttConnectOptions();            //設定是否清空session,這裡如果設定為false表示伺服器會保留用戶端的串連記錄，這裡設定為true表示每次串連到伺服器都以新的身份串連            options.setCleanSession(true);            //設定串連的使用者名稱            options.setUserName(userName);            //設定串連的密碼            options.setPassword(passWord.toCharArray());            // 設定逾時時間 單位為秒            options.setConnectionTimeout(10);            // 設定會話心跳時間 單位為秒 伺服器會每隔1.5*20秒的時間向用戶端發送個訊息判斷用戶端是否線上，但這個方法並沒有重連的機制            options.setKeepAliveInterval(20);            //設定回調            client.setCallback(new MqttCallback() {                @Override                public void connectionLost(Throwable cause) {                    //串連丟失後，一般在這裡面進行重連                    System.out.println("connectionLost----------");                }                @Override                public void deliveryComplete(IMqttDeliveryToken token) {                    //publish後會執行到這裡                    System.out.println("deliveryComplete---------"                            + token.isComplete());                }                @Override                public void messageArrived(String topicName, MqttMessage message)                        throws Exception {                    //subscribe後得到的訊息會執行到這裡面                    System.out.println("messageArrived----------");                    Message msg = new Message();                    msg.what = 1;                    msg.obj = topicName+"---"+message.toString();                    handler.sendMessage(msg);                }            });        } catch (Exception e) {            e.printStackTrace();        }    }    private void connect() {        new Thread(new Runnable() {            @Override            public void run() {                try {                    client.connect(options);                    Message msg = new Message();                    msg.what = 2;                    handler.sendMessage(msg);                } catch (Exception e) {                    e.printStackTrace();                    Message msg = new Message();                    msg.what = 3;                    handler.sendMessage(msg);                }            }        }).start();    }    @Override    public boolean onKeyDown(int keyCode, KeyEvent event) {        if(client != null && keyCode == KeyEvent.KEYCODE_BACK) {            try {                client.disconnect();            } catch (Exception e) {                e.printStackTrace();            }        }        return super.onKeyDown(keyCode, event);    }    @Override    protected void onDestroy() {        super.onDestroy();        try {            scheduler.shutdown();            client.disconnect();        } catch (MqttException e) {            e.printStackTrace();        }    }}

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apollo實現c#與android訊息推送(四)