WIFI調試助手2.0使用指南

本代碼只支持16進制發送與接收，主要參照藍牙的16進制發送與接收而修改的WiFi客戶端。
WiFi的基本的配置方法：https://blog.csdn.net/weixin_44244812/article/details/104303322
我使用Android WiFi客戶端時，我的安卓5.0版本的手機能連接WiFi，並能發送和接收數據，然而開發的APP在大老闆的高級版（如10.0版本，8.0版本）的安卓裏只能連接，不能發送和接收數據，這樣辛辛苦苦設計的APP變得毫無用處。巨傷心。
我在找原因，找解決方法，如這位博主的文章https://blog.csdn.net/banzhihuanyu/article/details/81056561，有興趣的點擊看下，我發現WiFi的安卓版本設計要求實在亂，我也不是專業幹Android Studio ,我只想當個嵌入式工程師，APP當作上位機而已。網上找了不少的demo,發現水積分的大有人在，應該是各種解決方法應該是當時有效的，現在Android版本的變化太大的原因吧。
終於天道酬勤，功夫不負有心人，終於解決了這個問題。如果你是下載過我的舊WiFi調試助手，私信我，我發最新的給你，如有出現什麼問題請一定告訴我，我就一臺舊版本手機，需要大家的測試和反饋才能創造更好的WIFI_APP上位機。
WiFi調戲助手2.0下載地址：https://download.csdn.net/download/weixin_44244812/12356294
若你是VIP大佬，請求你支持一下我，送點積分給我，我不是VIP，每次下載有關WiFi的設計demo都讓我心疼，你們的億點點支持，都是我成長的動力，積分支持鏈：https://download.csdn.net/download/weixin_44244812/12356294
DEMO介紹：
界面如下：

獲取IP相關代碼：
private WifiManager wifiManager;
// 服務器管理器
private DhcpInfo dhcpInfo;
private int wificonnection=0;

private void wifi_Init() {
// 得到服務器的IP地址
wifiManager = (WifiManager) getApplicationContext(). getSystemService(Context.WIFI_SERVICE);
dhcpInfo = wifiManager.getDhcpInfo();
IPadress = Formatter.formatIpAddress(dhcpInfo.gateway);
ipadress_st.setText(IPadress);
}
我懶了，若無積分的請自行復制粘貼吧：
結構框圖：

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.bkrc.car2019.socket_connect">

    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/bkrckj_logo"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        tools:replace="android:icon, android:theme">
        <activity android:name="com.bkrc.car2019.socket_connect.MainActivity"
            android:screenOrientation="portrait"
            android:windowSoftInputMode="stateAlwaysHidden|adjustPan">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

MainActivity

package com.bkrc.car2019.socket_connect;

import android.content.Context;
import android.content.res.Configuration;
import android.net.DhcpInfo;
import android.net.wifi.WifiManager;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.format.Formatter;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class MainActivity extends AppCompatActivity {

    private byte[] mByte = new byte[11];
    private TextView Data_show_st =null;
    private EditText ipadress_st = null,ipcom_st=null,Data_send_st=null;
    private Button clear_receive_st,getClear_send_st,send_st,get_ip_st,connection_st;
    private connect_transport sock_con;
    private WifiManager wifiManager;
    // 服務器管理器
    private DhcpInfo dhcpInfo;
    private int wificonnection=0;
    static String IPadress;
    static ExecutorService executorServicetor = Executors.newCachedThreadPool();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        control_init();
        sock_con =new connect_transport();

    }

    public static boolean isPad(Context context) {
        return (context.getResources().getConfiguration().screenLayout
                & Configuration.SCREENLAYOUT_SIZE_MASK)
                >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }
    //WiFi初始化
    private void wifi_Init() {
        // 得到服務器的IP地址
        wifiManager = (WifiManager) getApplicationContext(). getSystemService(Context.WIFI_SERVICE);
        dhcpInfo = wifiManager.getDhcpInfo();
        IPadress = Formatter.formatIpAddress(dhcpInfo.gateway);
        ipadress_st.setText(IPadress);
    }



    private void control_init()
    {
        ipadress_st=(EditText) findViewById(R.id.ipadress);
        ipcom_st=(EditText)findViewById(R.id.com);
        Data_show_st =(TextView) findViewById(R.id.rvdata);
        Data_send_st =(EditText) findViewById(R.id.senddata);

        clear_receive_st=(Button)findViewById(R.id.reclear);
        getClear_send_st=(Button)findViewById(R.id.sendclear);
        send_st=(Button)findViewById(R.id.sendto);

        connection_st=(Button)findViewById(R.id.buttonconnection);
        get_ip_st=(Button)findViewById(R.id.buttonip);

        clear_receive_st.setOnClickListener(new onClickListener());
        getClear_send_st.setOnClickListener(new onClickListener());
        send_st.setOnClickListener(new onClickListener());
        connection_st.setOnClickListener(new onClickListener());
        get_ip_st.setOnClickListener(new onClickListener());

    }

    // 接受顯示小車發送的數據
    private Handler recvhandler = new Handler() {
        public void handleMessage(Message msg) {

            if (msg.what == 1) {
              // mByte = (byte[]) msg.obj;
                String result = msg.getData().get("msg").toString();
                result+=" ";
                Data_show_st.append(result);
            }
        }
    };


    private class onClickListener implements View.OnClickListener
    {
        @Override
        public void onClick(View v) {

            switch(v.getId())
            {
                case R.id.reclear:
                    Data_show_st.setText(null);
                    break;
                case R.id.sendclear:
                    Data_send_st.setText(null);
                    break;
                case R.id.sendto:
                    sock_con.send(Data_send_st.getText().toString());
                    break;
                case R.id.buttonconnection:
                    if(wificonnection==1){
                        connection_st.setText("未連接");
                        sock_con .destory();
                        wificonnection=0;
                    }
                    else {
                        executorServicetor.execute(new Runnable() {
                            @Override
                            public void run() {
                                if (wificonnection == 0) {
                                    try {
                                        sock_con.connect(recvhandler, ipadress_st.getText().toString(), Integer.valueOf(ipcom_st.getText().toString(), 10));
                                        connection_st.setText("已連接");
                                        wificonnection = 1;
                                    } catch (Exception e) {
                                        //Toast.makeText(MainActivity.this, "提示：連接失敗", Toast.LENGTH_SHORT).show();

                                    }

                                }

                            }
                        });
                    }

                    break;
                case R.id.buttonip:
                    wifi_Init();
                    break;
                default:
                    break;

            }
        }
    }
    private class onLongClickListener2 implements View.OnLongClickListener {
        @Override
        public boolean onLongClick(View view) {

            return true;
        }
    }


}

connect_transport

package com.bkrc.car2019.socket_connect;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.widget.Toast;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.net.UnknownHostException;

public class connect_transport {

	public static DataInputStream bInputStream = null;
	public static DataOutputStream bOutputStream =null;
	public static Socket socket = null;
	private byte[] rbyte = new byte[40];
	private Handler reHandler;



	public short TYPE=0xAA;
	public short MAJOR = 0x00;
	public short FIRST = 0x00;
	public short SECOND = 0x00;
	public short THRID = 0x00;
	public short CHECKSUM=0x00;
	private byte[] msg = new byte[6000];

	public void destory(){
		try {
			if(socket!=null&&!socket.isClosed()){
				socket.close();
				bInputStream.close();
				bOutputStream.close();
			}	
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	public void connect(Handler reHandler ,String IP,int port) {
		try {
            this.reHandler =reHandler;
			socket = new Socket(IP, port);
			bInputStream = new DataInputStream(socket.getInputStream());
			bOutputStream = new DataOutputStream(socket.getOutputStream());
			reThread.start();
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	private Thread reThread = new Thread(new Runnable() {
		@Override
		public void run() {
			// TODO Auto1-generated method stub
			while (socket != null && !socket.isClosed()) {
				try{
					//////////////////////
					String result = bytesToString(readFromInputStream(bInputStream)); //通過從輸入流讀取數據，返回給result
					if (!result.equals("")) {
						Message msg = new Message();  //獲取�?��消息
						msg.what = 1;                 //設置message的what屬�?的�?
						msg.obj = rbyte;
						Bundle data = new Bundle();
						data.putString("msg", result);
						msg.setData(data);
						reHandler.sendMessage(msg);   //發�?消息

					}
				} catch (Exception e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
				}
			}
		}
	});
/////////////////////////////////////////////////////
public byte[] readFromInputStream(InputStream in) {
	int count = 0;
	byte[] inDatas = null;
	try {
		while (count == 0) {
			count = in.available();
		}
		inDatas = new byte[count];
		in.read(inDatas);
	} catch (Exception e) {
		e.printStackTrace();
	}
	return inDatas ;
}


	public String getHexString(String send) {
		String s = send;
		int i;
		StringBuilder sb = new StringBuilder();
		for ( i = 0; i < s.length(); i++) {
			char c = s.charAt(i);
			if (('0' <= c && c <= '9') || ('a' <= c && c <= 'f') ||
					('A' <= c && c <= 'F')) {
				sb.append(c);
			}
		}
		if ((sb.length() % 2) != 0) {
			sb.deleteCharAt(sb.length());
		}
		return sb.toString();
	}

	public byte[] stringToBytes(String s) {
		byte[] buf = new byte[s.length() / 2];
		for (int i = 0; i < buf.length; i++) {
			try {
				buf[i] = (byte) Integer.parseInt(s.substring(i * 2, i * 2 + 2), 16);
			} catch (NumberFormatException e) {
				e.printStackTrace();
			}

		}
		return buf;
	}
	public String bytesToString(byte[] bytes) {
		final char[] hexArray = "0123456789ABCDEF".toCharArray();
		char[] hexChars = new char[bytes.length * 2];
		StringBuilder sb = new StringBuilder();
		try{
			for (int i = 0; i < bytes.length; i++) {
				int v = bytes[i] & 0xFF;
				hexChars[i * 2] = hexArray[v >>> 4];
				hexChars[i * 2 + 1] = hexArray[v & 0x0F];

				sb.append(hexChars[i * 2]);
				sb.append(hexChars[i * 2 + 1]);
				sb.append(' ');
			}}
		catch (NumberFormatException e) {
			e.printStackTrace();
		};
		return sb.toString();
	}


	public void send( String X)
	{
		CHECKSUM=(short) ((MAJOR+FIRST+SECOND+THRID)%256);
		final byte[] sbyte= stringToBytes( getHexString(X));
		 MainActivity.executorServicetor.execute(new Runnable() {  //開啓線程，傳輸數據
			 @Override
			 public void run() {
				 // TODO Auto-generated method stub
				 try{
					 if (socket != null && !socket.isClosed()) {

						 bOutputStream.write(sbyte, 0, sbyte.length);
						 bOutputStream.flush();
					 }
				 } catch (IOException e) {
					 e.printStackTrace();
				 }
			 }
		 });
	}


	public void send_voice(final byte [] textbyte) {
                    MainActivity.executorServicetor.execute(new Runnable() {
						@Override
						public void run() {
							// TODO Auto-generated method stub
							try {
								if (socket != null && !socket.isClosed()) {
									bOutputStream.write(textbyte, 0, textbyte.length);
									bOutputStream.flush();
								}
							} catch (IOException e) {
								e.printStackTrace();
							}
						}
					});
	}

	// 沉睡
	public void yanchi(int time) {
		try {
			Thread.sleep(time);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}


}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/green"
    android:gravity="right"
    android:orientation="vertical">

    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="78dp"
        android:gravity="center_horizontal"
        android:text="socket 客戶端十六進制顯示實例"
        android:textColor="@color/white"
        android:textSize="24sp" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/textView4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="IP地址：" />

        <EditText
            android:id="@+id/ipadress"
            android:layout_width="172dp"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="格式（192.168.4.1）"
            android:inputType="textPersonName" />

        <Button
            android:id="@+id/buttonip"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="獲取IP" />

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/textView3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="端口號：" />

        <EditText
            android:id="@+id/com"
            android:layout_width="171dp"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="格式:9999"
            android:inputType="textPersonName" />

        <Button
            android:id="@+id/buttonconnection"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="連接" />

    </LinearLayout>

    <TextView
        android:id="@+id/rvdata"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:hint="接收數據（用空格隔開）"
        android:textSize="20sp" />

    <Button
        android:id="@+id/reclear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="清空" />



    <EditText
        android:id="@+id/senddata"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3"
        android:hint="發送十六數據（用空格隔開）"/>


    <Button
        android:id="@+id/sendclear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="清空" />

    <Button
        android:id="@+id/sendto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="發送" />

如果點贊過20或下載積分需求超20，我就寫一篇手把手弄智能家居APP,讀溫溼度，酒精檢測，點燈之類的。

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