java - Android 将数据从 Activity 类传递到类

Question

我想将字符串数据从 Activity 类传递到 TCPClient 类。所以基本上，这个字符串包含用户从我的 Activity 类 View 中输入的 IP 地址。作为返回，我需要将 IP 地址传递给 TCPClient 类。

下面是我正在编写的代码。

MainActivity.class:

 String add1 = etIPAddress1.getText().toString();
                    String add2 = etIPAddress2.getText().toString();
                    String add3 = etIPAddress3.getText().toString();
                    String add4 = etIPAddress4.getText().toString();
                    String new_IPAddress = add1 + "." + add2 + "." + add3 + "." + add4; 

                    Log.d("E", new_IPAddress);

TCPClient.class:

public class TCPClient {

private String serverMessage;

//public static final String SERVERIP = "192.168.254.105"; //your computer IP address
public static final String SERVERIP = "";

public static final int SERVERPORT = 4444;
private OnMessageReceived mMessageListener = null;
private boolean mRun = false;

PrintWriter out;
BufferedReader in;

/**
 *  Constructor of the class. OnMessagedReceived listens for the messages received from server
 */
public TCPClient(OnMessageReceived listener) {
    mMessageListener = listener;
}

这里有人知道怎么做吗？我将非常感谢您的帮助。谢谢。

Answer 1

创建一个将 IP 地址作为参数的构造函数。

public class TCPClient {

    private String SERVERIP = "";

    public TCPClient(String serverIp){

        SERVERIP = serverIp;

    }

}

然后在您的 Activity 中。

TCPClient client = new TCPClient(new_IPAddress);

但是，不正确的命名约定让我眼睛流血；)这里已经修复了:

public class TcpClient {

    private String serverIp = "";

    public TcpClient(String serverIp){

        this.serverIp = serverIp;

    }

}


...

TcpClient client = new TcpClient(newIpAddress);