我的Android进阶之旅------>Android实现用Android手机控制PC端的关机和重启的功能（三）Android客户端功能实现

2021-08-18 09:35:56

我的Android进阶之旅------>Android实现用Android手机控制PC端的关机和重启的功能（一）PC服务器端
(地址：http://blog.csdn.net/ouyang_peng/article/details/47004617)

我的Android进阶之旅------>Android实现用Android手机控制PC端的关机和重启的功能（二）Android客户端功能展示
（地址：http://blog.csdn.net/ouyang_peng/article/details/47005739）

通过以上两篇文章，我们了解了Android实现用Android手机控制PC端的关机和重启的的大概功能，现在我们来实现Android客户端的代码。

首先来看看整个项目的结构，如下图所示：

第一步：扫描局域网内所有PC,看是否有PC端的服务器在运行并监听30000端口。

我的Android进阶之旅------>Android实现用Android手机控制PC端的关机和重启的功能（三）Android客户端功能实现

此界面的布局文件为：/res/layout/layout_scanip.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <RelativeLayout
        android:id="@+id/ll"
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:orientation="vertical" >
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:orientation="vertical" >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/scaning" />
            <ProgressBar
                android:id="@+id/progressBar"
                style="?android:attr/progressBarStyleHorizontal"
                android:layout_width="100dp"
                android:layout_height="1dp" />
        </LinearLayout>
    </RelativeLayout>

</RelativeLayout>

扫描IP的Activity为com.oyp.shutdown.ScanActivity，代码如下：

package com.oyp.shutdown;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Window;
import android.widget.ProgressBar;
import android.widget.Toast;

public class ScanActivity extends Activity {
	private MyWifiManager myWifiManager = null;
	private String serverIP = "", resultIP = "";
	private ScanIPThread scanThread = null;
	private ProgressBar progressBar;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		getWindow().requestFeature(Window.FEATURE_NO_TITLE);
		int height = getWindow().getWindowManager().getDefaultDisplay()
				.getHeight();
		int width = getWindow().getWindowManager().getDefaultDisplay()
				.getWidth();
		setContentView(R.layout.layout_scanip);
		progressBar = (ProgressBar) findViewById(R.id.progressBar);
		myWifiManager = new MyWifiManager(ScanActivity.this);
		scanThread = new ScanIPThread();
		scanThread.start();
	}
	
	private Handler handler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case 1000:
				Toast.makeText(ScanActivity.this, getString(R.string.find),
						Toast.LENGTH_SHORT).show(); // 找到可连接PC
				Intent controlIntent = new Intent(ScanActivity.this,
						ControlActivity.class);
				// 将可以连接的ip发过去
				controlIntent.putExtra("ip", (String) msg.obj);
				startActivity(controlIntent);
				finish();
				break;
			case 2000:
				Toast.makeText(ScanActivity.this, getString(R.string.notFind),
						Toast.LENGTH_SHORT).show(); // 没有找到可连接PC
				Intent reScanIntent = new Intent(ScanActivity.this,
						ReScanActivity.class);
				startActivity(reScanIntent);
				finish();
				break;
			default:
				progressBar.setMax(254);
				progressBar.setProgress(msg.what);
				break;
			}
			super.handleMessage(msg);
		}
	};
	

	// 扫描连接的WiFi所在网段开启了30000端口的C类ip
	// 例如，wifi的ip是192.168.1.1 则扫描 192.168.1.1-192.168.1.254
	class ScanIPThread extends Thread {
		@Override
		public void run() {
			serverIP = myWifiManager.getServerIp();
			int t = serverIP.lastIndexOf(".") + 1;
			resultIP = serverIP.substring(0, t);
			boolean flag = false;
			for (int i = 1; i < 255; i++) {
				try {
					Socket socket = new Socket();
					InetSocketAddress s = new InetSocketAddress(resultIP + i,
							30000);
					socket.connect(s, 50);
					Message message = new Message();
					message.what = 1000;
					message.obj = resultIP + i;
					handler.sendMessage(message);
					flag = true;
					socket.close();
					break;
				} catch (IOException e) {
					handler.sendEmptyMessage(i);
				}
			}
			if (!flag) {
				handler.sendEmptyMessage(2000);
			}
			super.run();
		}
	}
}

第二步：如果没有扫描到有PC端的服务器在运行并监听30000端口，则重新扫描或者退出。如上述代码中，当msg.what=2000时，重新进行扫描。

我的Android进阶之旅------>Android实现用Android手机控制PC端的关机和重启的功能（三）Android客户端功能实现

此界面的布局文件为：/res/layout/layout_rescan.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <Button
        android:id="@id/btnReScan"
        style="@style/StyleButton"
        android:text="@string/rescan" />

    <Button
        android:id="@id/btnClose"
        style="@style/StyleButtonClose"
        android:text="@string/close" />

</LinearLayout>

重新扫描IP的Activity为com.oyp.shutdown.ReScanActivity，代码如下：

package com.oyp.shutdown;


import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;

public class ReScanActivity extends Activity implements OnClickListener {
	private Button btn_rescan, btn_close;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		getWindow().requestFeature(Window.FEATURE_LEFT_ICON);
		setContentView(R.layout.layout_rescan);
		getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,
				R.drawable.acticon);

		btn_rescan = (Button) findViewById(R.id.btnReScan);
		btn_close = (Button) findViewById(R.id.btnClose);

		btn_rescan.setOnClickListener(this);
		btn_close.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btnReScan:
			Intent intent = new Intent(ReScanActivity.this,ScanActivity.class);
			startActivity(intent);
			finish();
			break;
		case R.id.btnClose:
			finish();
			break;
		default:
			break;
		}
	}
}

第二步：扫描到了有PC端的服务器在运行并监听30000端口，则控制PC端关机、重启或者取消关机。如上述代码中，当msg.what=1000时，则打开控制PC端界面。

我的Android进阶之旅------>Android实现用Android手机控制PC端的关机和重启的功能（三）Android客户端功能实现

此界面的布局文件为：/res/layout/layout_control.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <Button
        android:id="@id/btnShutdown"
        style="@style/StyleButton"
        android:text="@string/shutdown" />

    <Button
        android:id="@id/btnReboot"
        style="@style/StyleButton"
        android:text="@string/reboot" />

    <Button
        android:id="@id/btnCancel"
        style="@style/StyleButton"
        android:text="@string/cancel" />

    <Button
        android:id="@id/btnClose"
        style="@style/StyleButtonClose"
        android:text="@string/close" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginBottom="6.0dip"
        android:text=" "
        android:textSize="12.0dip" />

</LinearLayout>

控制PC端的Activity为com.oyp.shutdown.ControlActivity，代码如下：

package com.oyp.shutdown;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.Toast;

public class ControlActivity extends Activity implements OnClickListener {
	private Button btn_shutdown, btn_restart, btn_cancel, btn_close;
	private Socket clientSocket;// 客户端socket
	private DataOutputStream dataOutput = null;// 客户端发送数据
	private DataInputStream dataInput = null;// 客户端接收数据
	private String connIP = "";
	private ConnThread connThread = null;
	private Handler handler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case 1:
				Toast.makeText(ControlActivity.this, (String) msg.obj,
						Toast.LENGTH_SHORT).show();
				break;
			default:
				break;
			}
			super.handleMessage(msg);
		}
	};

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		getWindow().requestFeature(Window.FEATURE_LEFT_ICON);
		setContentView(R.layout.layout_control);
		getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,
				R.drawable.acticon);

		btn_shutdown = (Button) findViewById(R.id.btnShutdown);
		btn_restart = (Button) findViewById(R.id.btnReboot);
		btn_cancel = (Button) findViewById(R.id.btnCancel);
		btn_close = (Button) findViewById(R.id.btnClose);

		Intent intent = getIntent();
		connIP = intent.getStringExtra("ip");

		btn_shutdown.setOnClickListener(this);
		btn_restart.setOnClickListener(this);
		btn_cancel.setOnClickListener(this);
		btn_close.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		// 连接服务器
		switch (v.getId()) {
		case R.id.btnShutdown:
			final String shutdown = "shutdown";
			if (connThread != null) {
				connThread.interrupt();
			}
			connThread = new ConnThread(connIP, 30000, shutdown);
			connThread.start();
			break;
		case R.id.btnReboot:
			final String reboot = "reboot";
			if (connThread != null) {
				connThread.interrupt();
			}
			connThread = new ConnThread(connIP, 30000, reboot);
			connThread.start();
			break;
		case R.id.btnCancel:
			final String cancel = "cancel";
			if (connThread != null) {
				connThread.interrupt();
			}
			connThread = new ConnThread(connIP, 30000, cancel);
			connThread.start();
			break;
		case R.id.btnClose:
			finish();
			break;
		default:
			break;
		}
	}

	class ConnThread extends Thread {
		private String ip;
		private int port;
		private String content;

		public ConnThread(String ip, int port, String content) {
			this.ip = ip;
			this.port = port;
			this.content = content;
		}

		@Override
		public void run() {
			try {
				clientSocket = new Socket(ip, port);
				while (true) {
					dataOutput = new DataOutputStream(
							clientSocket.getOutputStream());
					dataInput = new DataInputStream(
							clientSocket.getInputStream());
					String msg = "";
					if ((dataOutput != null) && (!content.equals(""))) {
						dataOutput.writeUTF(content);
					}
					msg = dataInput.readUTF();
					if (msg != null && !"".equals(msg)) {
						Message message = new Message();
						message.what = 1;
						message.obj = msg;
						handler.sendMessage(message);
					}
				}
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				try {
					if (dataOutput != null) {
						dataOutput.close();
					}
					if (dataInput != null) {
						dataInput.close();
					}
					if (clientSocket != null) {
						clientSocket = null;
					}
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			super.run();
		}
	}
}

其中MyWifiManager.java代码如下：

package com.oyp.shutdown;

import android.content.Context;
import android.net.DhcpInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

public class MyWifiManager {

	private WifiManager wifiManager;
	private WifiInfo wifiInfo;
	private DhcpInfo dhcpInfo;
	public MyWifiManager(Context context){
		wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
		wifiInfo = wifiManager.getConnectionInfo();
		dhcpInfo = wifiManager.getDhcpInfo();
	}
	//得到本机ip
	public String getLocalIp(){
		return FormatString(dhcpInfo.ipAddress);
	}
	//得到服务器ip（热点ip）
	public String getServerIp(){
		return FormatString(dhcpInfo.serverAddress);
	}
	//转换ip格式为*.*.*.*
	public String FormatString(int value){
		String strValue="";
		byte[] ary = intToByteArray(value);
		for(int i=ary.length-1;i>=0;i--){
			strValue+=(ary[i]&0xFF);
			if(i>0){
				strValue+=".";
			}
		}
		return strValue;
	}
	public byte[] intToByteArray(int value){
		byte[] b=new byte[4];
		for(int i=0;i<4;i++){
			int offset = (b.length-1-i)*8;
			b[i]=(byte) ((value>>>offset)&0xFF);
		}
		return b;
	}
}

定义控件ID的文件为/res/values/id.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item type="id" name="btnAirplane">false</item>
    <item type="id" name="btnShutdown">false</item>
    <item type="id" name="btnReScan">false</item>
    <item type="id" name="btnCancel">false</item>
    <item type="id" name="btnReboot">false</item>
    <item type="id" name="btnRecovery">false</item>
    <item type="id" name="btnBootloader">false</item>
    <item type="id" name="btnClose">false</item>
</resources>

/res/values/strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">控制PC</string>
    <string name="shutdown">关机</string>
    <string name="rescan">重新扫描</string>
    <string name="reboot">重启</string>
    <string name="cancel">取消</string>
    <string name="please_wait">请稍等......</string>
    <string name="warning">错误</string>
    <string name="root">无法获得 Root 权限！</string>
    <string name="close">退出</string>
    <string name="ok">确定</string>
    <string name="scaning">正在扫描......</string>
    <string name="find">找到可连接PC.</string>
    <string name="notFind">没有找到可连接PC</string>
</resources>

/res/values/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="StyleButton">
        <item name="android:textSize">16.0dip</item>
        <item name="android:textStyle">bold</item>
        <item name="android:textColor">#ffffffff</item>
        <item name="android:layout_gravity">center_horizontal</item>
        <item name="android:background">@drawable/btn_selector</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_marginLeft">30.0dip</item>
        <item name="android:layout_marginRight">30.0dip</item>
        <item name="android:layout_marginBottom">8.0dip</item>
    </style>
    <style name="StyleButtonClose">
        <item name="android:textSize">16.0dip</item>
        <item name="android:textStyle">bold</item>
        <item name="android:textColor">#ffffffff</item>
        <item name="android:layout_gravity">center_horizontal</item>
        <item name="android:background">@drawable/btn_close_selector</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_marginLeft">30.0dip</item>
        <item name="android:layout_marginRight">30.0dip</item>
        <item name="android:layout_marginBottom">8.0dip</item>
    </style>
</resources>

项目描述文件：AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.oyp.shutdown"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <activity
            android:name=".ScanActivity"
            android:theme="@android:style/Theme.Dialog" >
             <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".ReScanActivity"
            android:icon="@drawable/icon"
            android:label="@string/app_name"
            android:theme="@android:style/Theme.Dialog" >
        </activity>
        <activity
            android:name=".ControlActivity"
            android:icon="@drawable/icon"
            android:label="@string/app_name"
            android:theme="@android:style/Theme.Dialog" >
        </activity>
    </application>
</manifest>

代码可以在此处下载：Android实现用Android手机控制PC端的关机和重启的功能地址：（http://download.csdn.net/detail/qq446282412/8923991）

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