OkHttp3 websocket

使用OkHttp3之Websocket实现长连接

这个发图片也没成功，发字符是可以的。

首先在在build.gradle中添加对Okhttp的支持

compile 'com.squareup.okhttp3:okhttp:3.8.1'

compile 'com.squareup.okhttp3:mockwebserver:3.8.1'

布局文件

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/activity_main"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context="com.yinzhendong.websocket.MainActivity">

<ScrollView

android:layout_width="match_parent"

android:layout_height="wrap_content">

<LinearLayout

android:layout_marginLeft="20dp"

android:layout_marginRight="20dp"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:gravity="center_horizontal"

android:orientation="vertical">

<Button

android:id="@+id/start"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:text="连接"

android:textSize="17sp"/>

<TextView

android:id="@+id/output"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:textSize="16sp"/>

</LinearLayout>

</ScrollView>

</RelativeLayout>

MainActivity.java

      public class MainActivity extends AppCompatActivity implements View.OnClickListener{
      private Button btnStart;
      private TextView tvOutput;
      private WebSocket mSocket;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      btnStart = (Button) findViewById(R.id.start);
      tvOutput = (TextView) findViewById(R.id.output);
      btnStart.setOnClickListener(this);
      }
      private void start() {
      OkHttpClient mOkHttpClient = new OkHttpClient.Builder()
      .readTimeout(3, TimeUnit.SECONDS)//设置读取超时时间
      .writeTimeout(3, TimeUnit.SECONDS)//设置写的超时时间
      .connectTimeout(3, TimeUnit.SECONDS)//设置连接超时时间
      .build();
      Request request = new Request.Builder().url("ws://echo.websocket.org").build();
      EchoWebSocketListener socketListener = new EchoWebSocketListener();
      mOkHttpClient.newWebSocket(request, socketListener);
      mOkHttpClient.dispatcher().executorService().shutdown();
      }
      /**
      * @param v The view that was clicked.
      */
      @Override
      public void onClick(View v) {
      switch (v.getId()) {
      case R.id.start://开始连接
      start();
      break;
      }
      }
      private final class EchoWebSocketListener extends WebSocketListener {
      @Override
      public void onOpen(WebSocket webSocket, Response response) {
      super.onOpen(webSocket, response);
      mSocket = webSocket;
      String openid = "1";
      //连接成功后，发送登录信息
      String message = "{\"type\":\"login\",\"user_id\":\""+openid+"\"}";
      mSocket.send(message);
      output("连接成功！");
      }
      @Override
      public void onMessage(WebSocket webSocket, ByteString bytes) {
      super.onMessage(webSocket, bytes);
      output("receive bytes:" + bytes.hex());
      }
      @Override
      public void onMessage(WebSocket webSocket, String text) {
      super.onMessage(webSocket, text);
      output("receive text:" + text);
      //收到服务器端发送来的信息后，每隔25秒发送一次心跳包
      final String message = "{\"type\":\"heartbeat\",\"user_id\":\"heartbeat\"}";
      Timer timer = new Timer();
      timer.schedule(new TimerTask() {
      @Override
      public void run() {
      mSocket.send(message);
      }
      },25000);
      }
      @Override
      public void onClosed(WebSocket webSocket, int code, String reason) {
      super.onClosed(webSocket, code, reason);
      output("closed:" + reason);
      }
      @Override
      public void onClosing(WebSocket webSocket, int code, String reason) {
      super.onClosing(webSocket, code, reason);
      output("closing:" + reason);
      }
      @Override
      public void onFailure(WebSocket webSocket, Throwable t, Response response) {
      super.onFailure(webSocket, t, response);
      output("failure:" + t.getMessage());
      }
      }
      private void output(final String text) {
      runOnUiThread(new Runnable() {
      @Override
      public void run() {
      tvOutput.setText(tvOutput.getText().toString() + "\n\n" + text);
      }
      });
      }
      }
  
 

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/103594260