学习过程中大家都碰到过连接被断开的问题给困扰吧,下面教大家如何做到连接断开后,重新连接
首先要创建连接监听器,用来监听连接状态,这里我写了一个类
继承了ConnectionListener,重写了里面5个方法,最重要的两个方法connectionClosed()和connectionClosedOnError()
前者为连接正常断开,后者是连接异常断开,不管是正常还是异常,我们都要监听到
这里写了一个定时器,两秒进行连接一次,注释写的也很清楚,不做太多介绍
要注意的是我把用户名和密码都存到sharePreferences中了
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package com.techrare.listener;
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import java.util.Timer;
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import java.util.TimerTask;
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import org.jivesoftware.smack.ConnectionListener;
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import android.util.Log;
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import com.techrare.taxicall.MainActivity;
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import com.techrare.utils.Utils;
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import com.techrare.utils.XmppConnection;
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public class TaxiConnectionListener implements ConnectionListener {
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private Timer tExit;
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private String username;
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private String password;
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private int logintime = 2000;
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@Override
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public void connectionClosed() {
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Log.i("TaxiConnectionListener", "連接關閉");
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XmppConnection.getInstance().closeConnection();
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tExit = new Timer();
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tExit.schedule(new timetask(), logintime);
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}
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@Override
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public void connectionClosedOnError(Exception e) {
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Log.i("TaxiConnectionListener", "連接關閉異常");
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boolean error = e.getMessage().equals("stream:error (conflict)");
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if (!error) {
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XmppConnection.getInstance().closeConnection();
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tExit = new Timer();
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tExit.schedule(new timetask(), logintime);
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}
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}
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class timetask extends TimerTask {
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@Override
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public void run() {
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username = Utils.getInstance().getSharedPreferences("taxicall",
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"account", MainActivity.context);
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password = Utils.getInstance().getSharedPreferences("taxicall",
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"password", MainActivity.context);
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if (username != null && password != null) {
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Log.i("TaxiConnectionListener", "嘗試登錄");
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if (XmppConnection.getInstance().login(username, password)) {
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Log.i("TaxiConnectionListener", "登錄成功");
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} else {
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Log.i("TaxiConnectionListener", "重新登錄");
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tExit.schedule(new timetask(), logintime);
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}
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}
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}
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}
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@Override
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public void reconnectingIn(int arg0) {
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}
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@Override
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public void reconnectionFailed(Exception arg0) {
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}
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@Override
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public void reconnectionSuccessful() {
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}
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}
其次就是给连接设置监听器了,最好放在登录方法里,关闭连接方法里移除监听
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TaxiConnectionListener connectionListener = new TaxiConnectionListener();
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getConnection().addConnectionListener(connectionListener);
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connection.removeConnectionListener(connectionListener);
先介绍到这里~
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