由于平常工作中经常需要使用adb 连接，那么问题来了，如果一台电脑需要连接多台手机，使用传统的USB连接的方式就不方便了。这时，就需要无线连接了。目前我所知的无线连接有两种：
1.利用android studio的adb wify插件可以进行多台机器的远程连接，该方式后续文章会提到
2.手机端进入adb shell 开通adbd端口setprop service.adb.tcp.port 5555
PC端的dos命令输入adb connect 手机端ip地址，即可连接
原理就是这样子，代码的实现方式就是第二种，使用该方式的手机必须是需要root权限的，废话不多说了，以下是代码：
1.布局文件，一个按钮，一个显示文本，代码如下
2.MainActivity代码如下
package com.example.administrator.connectdemo;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
Button button_connect;
TextView tv_ip;
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button_connect=(Button)findViewById(R.id.button_connect);
tv_ip=(TextView)findViewById(R.id.tv_ip);
button_connect.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new Thread() {
@Override
public void run() {//在run()方法实现业务逻辑；
//...
//更新UI操作；
handler.post(new Runnable() {
@Override
public void run() {
try{
//获取无线的ip相关信息
String ipString=ShellUtils.execCommand(new String[]{"ifconfig wlan0"},true,true).successMsg;
//截取ip地址
String ip=ipString.substring(ipString.indexOf("inet addr")+10,ipString.indexOf("Bcast")-2);
tv_ip.setText("adb connect "+ip+":5555远程连接");
//开启adbd端口
ShellUtils.execCommand("setprop service.adb.tcp.port 5555",true);
}
catch (StringIndexOutOfBoundsException e){
Toast toast=Toast.makeText(MainActivity.this, "wify未连接", Toast.LENGTH_SHORT);
toast.show();
}
}
});
}
}.start();
}
});
}
}
3.ShellUtils代码如下：
package com.example.administrator.connectdemo;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;
/**
* Created by Administrator on 2017/7/13.
* 有效启动shell类
*/
public class ShellUtils {
public static final String COMMAND_SU = "su";
public static final String COMMAND_SH = "sh";
public static final String COMMAND_EXIT = "exit\n";
public static final String COMMAND_LINE_END = "\n";
private ShellUtils() {
throw new AssertionError();
}
/**
* check whether has root permission
*
* @return
*/
public static boolean checkRootPermission() {
return execCommand("echo root", true, false).result == 0;
}
/**
* execute shell command, default return result msg
*
* @param command command
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String command, boolean isRoot) {
return execCommand(new String[] {command}, isRoot, true);
}
/**
* execute shell commands, default return result msg
*
* @param commands command list
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(List commands, boolean isRoot) {
return execCommand(commands == null ? null : commands.toArray(new String[] {}), isRoot, true);
}
/**
* execute shell commands, default return result msg
*
* @param commands command array
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String[] commands, boolean isRoot) {
return execCommand(commands, isRoot, true);
}
/**
* execute shell command
*
* @param command command
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String command, boolean isRoot, boolean isNeedResultMsg) {
return execCommand(new String[] {command}, isRoot, isNeedResultMsg);
}
/**
* execute shell commands
*
* @param commands command list
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(List commands, boolean isRoot, boolean isNeedResultMsg) {
return execCommand(commands == null ? null : commands.toArray(new String[] {}), isRoot, isNeedResultMsg);
}
/**
* execute shell commands
*
* @param commands command array
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* - if isNeedResultMsg is false, {@link CommandResult#successMsg} is null and
* {@link CommandResult#errorMsg} is null.
* - if {@link CommandResult#result} is -1, there maybe some excepiton.
*
*/
public static CommandResult execCommand(String[] commands, boolean isRoot, boolean isNeedResultMsg) {
int result = -1;
if (commands == null || commands.length == 0) {
return new CommandResult(result, null, null);
}
Process process = null;
BufferedReader successResult = null;
BufferedReader errorResult = null;
StringBuilder successMsg = null;
StringBuilder errorMsg = null;
DataOutputStream os = null;
try {
process = Runtime.getRuntime().exec(isRoot ? COMMAND_SU : COMMAND_SH);
os = new DataOutputStream(process.getOutputStream());
for (String command : commands) {
if (command == null) {
continue;
}
// donnot use os.writeBytes(commmand), avoid chinese charset error
os.write(command.getBytes());
os.writeBytes(COMMAND_LINE_END);
os.flush();
}
os.writeBytes(COMMAND_EXIT);
os.flush();
result = process.waitFor();
// get command result
if (isNeedResultMsg) {
successMsg = new StringBuilder();
errorMsg = new StringBuilder();
successResult = new BufferedReader(new InputStreamReader(process.getInputStream()));
errorResult = new BufferedReader(new InputStreamReader(process.getErrorStream()));
String s;
while ((s = successResult.readLine()) != null) {
successMsg.append(s);
}
while ((s = errorResult.readLine()) != null) {
errorMsg.append(s);
}
}
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (os != null) {
os.close();
}
if (successResult != null) {
successResult.close();
}
if (errorResult != null) {
errorResult.close();
}
} catch (IOException e) {
e.printStackTrace();
}
if (process != null) {
process.destroy();
}
}
return new CommandResult(result, successMsg == null ? null : successMsg.toString(), errorMsg == null ? null
: errorMsg.toString());
}
/**
* result of command
*
* - {@link CommandResult#result} means result of command, 0 means normal, else means error, same to excute in
* linux shell
* - {@link CommandResult#successMsg} means success message of command result
* - {@link CommandResult#errorMsg} means error message of command result
*
*
* @author Trinea 2013-5-16
*/
public static class CommandResult {
/** result of command **/
public int result;
/** success message of command result **/
public String successMsg;
/** error message of command result **/
public String errorMsg;
public CommandResult(int result) {
this.result = result;
}
public CommandResult(int result, String successMsg, String errorMsg) {
this.result = result;
this.successMsg = successMsg;
this.errorMsg = errorMsg;
}
}
}