Question

我正在使用socket.io库创建聊天应用。库的github链接是com.github.nkzawa：socket.io-client：0.3.0。我想添加用户添加频道的功能。为此，我发出了频道名称和说明，但问题是数据没有发射到服务器。我已完成调试，但我无法检测到问题出在哪里。代码如下：的 HomeActivity.java

public class HomeActivity extends AppCompatActivity implements AlertDialogueBoxInterface {

private Socket mSocket;
private Boolean isConnected = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home);
RoundTableApplication app = (RoundTableApplication) this.getApplication();
    mSocket = app.getSocket();
    mSocket.on(Socket.EVENT_CONNECT,onConnect);
    mSocket.on(Socket.EVENT_DISCONNECT,onDisconnect);
    mSocket.on(Socket.EVENT_CONNECT_ERROR, onConnectError);
    mSocket.on(Socket.EVENT_CONNECT_TIMEOUT, onConnectError);
    mSocket.connect();
 private Emitter.Listener onConnect = new Emitter.Listener() {
    @Override
    public void call(Object... args) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                if(!isConnected) {
                    if(null!=channelName)
                        mSocket.emit("add channel", channelName, channelDescription);
                    Toast.makeText(getApplicationContext(),
                            "Connected", Toast.LENGTH_LONG).show();
                    isConnected = true;
                }
            }
        });
    }
};
private Emitter.Listener onDisconnect = new Emitter.Listener() {
    @Override
    public void call(Object... args) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {

                isConnected = false;
                Toast.makeText(getApplicationContext(),
                        "Disconnected. Please check your internet connection", Toast.LENGTH_LONG).show();
            }
        });
    }
};

private Emitter.Listener onConnectError = new Emitter.Listener() {
    @Override
    public void call(Object... args) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {

                Toast.makeText(getApplicationContext(),
                        "Failed to connect", Toast.LENGTH_LONG).show();
            }
        });
    }
};
@Override
public void sendChannel(ArrayList<String> channelList) {
    channelName = channelList.get(0);
    channelDescription = channelList.get(1);
    if (channelName != null && channelDescription != null) {
        navItemIndex = 0;
        CURRENT_TAG = TAG_CHANNEL;
        Bundle bundle = new Bundle();
        bundle.putString("channelName", channelName);
        bundle.putString("channelDescription", channelDescription);

        AddChannelModel addChannelModel = new AddChannelModel(channelName, channelDescription);
        mSocket.emit("newChannel", addChannelModel);
        Toast.makeText(this, "new channel", Toast.LENGTH_SHORT).show();
 }
}
@Override
public void onDestroy() {
    super.onDestroy();

    mSocket.disconnect();

    mSocket.off(Socket.EVENT_CONNECT, onConnect);
    mSocket.off(Socket.EVENT_DISCONNECT, onDisconnect);
    mSocket.off(Socket.EVENT_CONNECT_ERROR, onConnectError);
    mSocket.off(Socket.EVENT_CONNECT_TIMEOUT, onConnectError);
}
}

RoundTableApplication.java

public class RoundTableApplication extends Application {

private Socket mSocket;
{
    try {
        mSocket = IO.socket("http://chattymac.herokuapp.com/v1/");
    } catch (URISyntaxException e) {
        throw new RuntimeException(e);
    }
}

public Socket getSocket() {
    return mSocket;
}
}

AlertDialogueBox.java

public class AlertDialogueBox {

EditText etAlertDialogueChannelName, etAlertDialogueChannelDescription;
private String inputChannelName, inputChannelDescription;
private final ArrayList<String> channelList = new ArrayList<String>();

private AlertDialogueBoxInterface dialogueBoxInterface;
private Activity activity;

public AlertDialogueBox(Activity activity){
    this.activity = activity;
    this.dialogueBoxInterface = (AlertDialogueBoxInterface) this.activity;
}

public boolean getAlertDialogueBox(){
    // inflate alert dialog xml
    LayoutInflater li = LayoutInflater.from(activity);
    View dialogView = li.inflate(R.layout.custom_dialogue_add_channel, null);
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
            activity);
    // set title
    //alertDialogBuilder.setTitle("Add Channel");
    // set custom_dialog.xml to alertdialog builder
    alertDialogBuilder.setView(dialogView);
    etAlertDialogueChannelName = (EditText) dialogView
            .findViewById(R.id.custom_dialogue_channel_name);
    etAlertDialogueChannelDescription = (EditText) dialogView
            .findViewById(R.id.custom_dialogue_channel_description);
    // set dialog message
    alertDialogBuilder
            .setCancelable(false)
            .setPositiveButton("Add Channel",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                            int id) {
                            inputChannelName = etAlertDialogueChannelName.getText().toString();
                            inputChannelDescription = etAlertDialogueChannelDescription.getText().toString();
                            channelList.add(inputChannelName);
                            channelList.add(inputChannelDescription);
                            dialogueBoxInterface.sendChannel(channelList);
                            //Toast.makeText(activity, channelList.toString(), Toast.LENGTH_SHORT).show();
                            dialog.cancel();
                        }
                    })
            .setNegativeButton("Cancel",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                            int id) {
                            dialog.cancel();
                        }
                    });
    // create alert dialog
    AlertDialog alertDialog = alertDialogBuilder.create();
    // show it
    alertDialog.show();
return true;
}
}

我的代码的Github链接是 - https://github.com/jadaungeetanjali/RoundTable

我是Android的新手，如果有人可以帮我解决这个问题。提前致谢

Answer 1

在RoundTableApplication.java中

替换：

private Socket mSocket;

与

public static Socket mSocket;

之后在HomeActivity.java中删除：

private Socket mSocket;

将HomeActivity.java中的mSocket替换为：

RoundTableApplication.mSocket

例如

的内容

mSocket.connect();

使用

RoundTableApplication.mSocket.connect();

在建立连接后使用emit方法，你在onConnect中使用它。使用一次套接字连接后，您需要使用发射器侦听器接口来处理发出的事件。 Emit订阅事件但是要处理响应，你需要在我的代码中找不到的探测器监听器。

替换：

mSocket.emit("add channel", channelName, channelDescription);

使用：

mSocket.emit("add channel", listenerMethod);

在上面的语句中，listenerMethod是一种方法，您可以在其中描述获得响应时要执行的操作。

按照以下链接熟悉socket.io：

https://socket.io/blog/native-socket-io-and-android/

如需完整示例，请访问：

https://github.com/nkzawa/socket.io-android-chat

使用socket.io库

1 个答案: