hzuapps#93 hzuapps#12 实验9:综合编程

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903212/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="edu.hzuapps.androidworks.homeworks.net1314080903212">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+
+        <activity
+            android:name=".Net1314080903212MultiChat"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
+</manifest>

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903212/Net1314080903212Activity.java

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+package edu.hzuapps.androidworks.homeworks;
+
+import android.os.Bundle;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import edu.hzuapps.androidworks.R;
+//import edu.hzuapps.androidworks.homeworks.Net1314080903212;
+
+/**
+ * Created by dell on 2016/3/21.
+ */
+public class Net1314080903212 extends BackActivity {
+
+    private LinearLayout mTextContainer;
+
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+//      TextView textView = new TextView(this);
+//      textView.setText("isshe");
+
+        createViewInJava();
+        setContentView(mTextContainer);
+
+//      默认使用XML创建的View
+//      setContentView(R.layout.net1314080903212);
+
+}
+
+    private void createViewInJava() {
+        mTextContainer = new LinearLayout(this);
+        ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams( //
+                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        mTextContainer.setLayoutParams(layoutParams);
+        mTextContainer.setOrientation(LinearLayout.HORIZONTAL);
+
+        TextView textView = new TextView(this);
+        textView.setText("isshe: Net13140809032122");
+
+        mTextContainer.addView(textView);
+    }
+
+}

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903212/Net1314080903212ClientThread.java

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+package edu.hzuapps.androidworks.homeworks.net1314080903212;
+
+import android.os.Looper;
+import android.os.Message;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.Socket;
+import java.net.SocketTimeoutException;
+import android.os.Handler;                  ////!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+//import java.util.logging.Handler;
+
+
+/**
+ * Created by dell on 2016/4/12.
+ */
+public class Net1314080903212ClientThread implements Runnable {
+    private Socket      s;
+    private Handler     handler;        //定义向UI发送消息的Handler对象
+    public Handler     revHandler;     //定义接收UI线程消息的Handler对象
+    BufferedReader       br =null;        //输入流
+    OutputStream         os = null;       //输出流
+
+    public Net1314080903212ClientThread(Handler handler)
+    {
+        this.handler = handler;
+    }
+
+
+    public void run()
+    {
+        try {
+            System.out.println("Socket before!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            s = new Socket("192.168.240.22", 9402);
+            System.out.println("Socket behind!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            br = new BufferedReader((new InputStreamReader(s.getInputStream())));
+            os = s.getOutputStream();       //为什么br不是类似这样？
+
+            //启动一条子线程来读取服务器响应的数据
+            new Thread()
+            {
+                @Override
+                public void run()
+                {
+                    String content = null;
+                    Net1314080903212WH write_history = new Net1314080903212WH();
+                    //不断读取Socket输入流中的内容
+                    try
+                    {
+                        while((content = br.readLine()) != null)
+                        {
+                            //读到来自服务器的数据后， 发送消息通知程序
+                            //界面显示该数据
+                            System.out.println("content =" + content + "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+                            Message msg = new Message();
+                            msg.what = 0x123;                               //?????
+                            msg.obj = content; //s.getLocalAddress() + ":" + content;                              //????            ////!!!
+                            handler.sendMessage(msg);                      //???
+                            //把数据写入文件
+                            write_history.write_file(content);
+
+                        }
+                    }
+                    catch (IOException e)
+                    {
+                        e.printStackTrace();
+                    }
+                }
+            }.start();                                                     //????
+
+            //当前线程初始化
+            Looper.prepare();                                             //????
+            revHandler = new Handler()
+            {
+                @Override
+                public void handleMessage(Message msg)
+                {
+                    //接收到UI线程中用户输入的数据
+                    if (msg.what == 0x345)
+                    {
+                        //将用户在文本框输入的内容写入网络
+                        try
+                        {
+                            os.write((s.getLocalAddress() + ": " + msg.obj.toString() + "\r\n").getBytes("utf-8"));
+                        }
+                        catch (Exception e)
+                        {
+                            e.printStackTrace();
+                        }
+                    }
+                }
+            };
+            //启动Looper
+            Looper.loop();                  //????
+        }
+        catch (SocketTimeoutException e1)
+        {
+            System.out.println("网络连接超时!!!");
+        }
+        catch (Exception e)
+        {
+            e.printStackTrace();
+        }
+    }
+}

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903212/Net1314080903212GetRemoteFile.java

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+package package edu.hzuapps.androidworks.homeworks.net1314080903212;
+
+import android.os.Environment;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+import android.renderscript.ScriptGroup;
+import android.widget.TextView;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.RandomAccessFile;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+
+/**
+ * Created by dell on 2016/4/28.
+ */
+public class Net1314080903212GetRemoteFile implements Runnable{
+    public TextView GRFshow;
+    public Handler sendHandler;
+
+    public void Net1314080903212GetRemoteFile(Handler handler)
+    {
+        sendHandler = handler;
+    }
+
+    public void run()
+    {
+        try {
+            System.out.println("before new URL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            URL git_url = new URL("https://raw.githubusercontent.com/OurScream/PerIntBank/master/README.md");
+
+            System.out.println("before new URLConnection!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            //打开url链接
+            URLConnection git_con = git_url.openConnection();
+
+            //获取数据
+ //           InputStream is = git_con.getInputStream();                         //方法1
+ //           BufferedInputStream bis = new BufferedInputStream(is);
+            InputStream bis = git_url.openStream();                              //方法2
+
+            int read_len = 0;
+            byte[] readbyte = new byte[1024];
+
+            System.out.println("before new get_path!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            //新建文件
+            File get_path =  Environment.getExternalStorageDirectory();     //
+            File file =  new File(get_path.getCanonicalPath() , "ChatHistory");
+
+            //判断历史记录文件是否存在， 不存在则创建
+            if (!file.exists()){
+                    file.createNewFile();
+                    System.out.println("GetRemoteFile: 创建文件!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            }
+
+            while((read_len = bis.read(readbyte)) != -1)
+            {
+                RandomAccessFile raf = new RandomAccessFile(file,"rw");
+                raf.seek(file.length());
+                raf.write(readbyte);                    //这里的换行不知道可不可以！
+                System.out.println(readbyte.toString() + "GetRemoteFile: 看看一条记录大概都长:" + file.length());
+                raf.close();
+            }
+            //再读一次文件
+            Message msg = new Message();
+            msg.what = 0x789;
+            sendHandler.sendMessage(msg);
+
+//            new Net1314080903212RH().file_read(new Net1314080903212MultiChat().show);
+        }
+        catch(MalformedURLException murle)
+        {
+            murle.printStackTrace();
+        }
+        catch(IOException ioe)
+        {
+            ioe.printStackTrace();
+        }
+    }
+}

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903212/Net1314080903212MultiChat.java

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+package edu.hzuapps.androidworks.homeworks.net1314080903212;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.os.Message;
+import android.text.method.ScrollingMovementMethod;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+
+//import java.util.logging.Handler;
+import android.os.Handler;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * Created by dell on 2016/4/12.
+ */
+public class Net1314080903212MultiChat extends Activity {
+    //定义界面的两个文本框
+    EditText input;
+    TextView show;
+    //定义一个界面上的按钮
+    Button send;
+    Handler handler;
+    //定义与服务器通信的子线程
+    Net1314080903212ClientThread clientThread;
+
+
+    @Override
+    public void onCreate(Bundle savedInstanceState)
+    {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.main);
+        input = (EditText) findViewById(R.id.input);
+        send = (Button) findViewById(R.id.send);
+        show = (TextView) findViewById(R.id.show);
+        show.setMovementMethod(new ScrollingMovementMethod());
+
+        //读取历史记录
+        Net1314080903212RH read_history = new Net1314080903212RH();
+        read_history.file_read(show);
+
+        handler = new Handler()                         //????不懂！！！
+        {
+            @Override
+            public void handleMessage(Message msg)
+            {
+                //如果消息来自于子线程
+                if (msg.what == 0x123)                  //????不懂！！！
+                {
+                    //将读取的内容追加显示到文本框
+                    Date date = new Date();
+                    DateFormat date_format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+                    String time = date_format.format(date);
+                    show.append("\n" + time);
+                    show.append("\n" + msg.obj.toString());
+                    //并写到文件！                                    //!!!!
+                }
+            }
+        };
+        clientThread = new Net1314080903212ClientThread(handler);
+        //客户端启动ClientThread线程创建网络连接、读取来自服务器的数据
+        new Thread(clientThread).start();
+
+        send.setOnClickListener(new View.OnClickListener()              ///!!!
+        {
+            @Override
+            public void onClick(View v)
+            {
+
+                try {
+                    //当用户按下发送按钮后， 将用户输入的数据封装成Message
+                    //然后发送给子线程的Handler
+                    Message msg = new Message();
+
+                    msg.what = 0x345;                   ///???????不懂!!
+                    msg.obj = input.getText().toString();
+                    clientThread.revHandler.sendMessage(msg);
+                    System.out.println("send msg = " + input.getText() + "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+                    //清空input文本框
+                    input.setText("");
+                }
+                catch (Exception e)
+                {
+                    e.printStackTrace();
+                }
+            }
+        });                                                                   ///note!!!!不懂!!!
+    }
+
+}

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903212/Net1314080903212MultiChat.xml

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+实验7：网络编程