本文共 16210 字，大约阅读时间需要 54 分钟。

111111 activity_main.xml

222222 androidManifest.xml

        
        
        
   	 android:usesCleartextTraffic="true"

33333 mainactivity.java

package com.example.download3;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;import android.widget.TabHost;import android.annotation.SuppressLint;import android.os.Environment;import android.os.Handler;import android.os.Message;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.EditText;import android.widget.ListView;import android.widget.ProgressBar;import android.widget.TextView;import android.widget.Toast;import androidx.appcompat.app.AppCompatActivity;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.InetAddress;import java.net.MalformedURLException;import java.net.Socket;import java.net.URL;import java.net.URLConnection;import android.Manifest;import android.app.Activity;import android.content.pm.PackageManager;import android.media.MediaPlayer;import android.os.Build;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.os.Message;import android.os.StrictMode;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.ImageButton;import android.widget.ListView;import android.widget.SeekBar;import android.widget.TextView;import android.widget.Toast;import androidx.core.app.ActivityCompat;import java.io.File;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.Timer;import java.util.TimerTask;public class MainActivity extends AppCompatActivity {
       TextView tv;    ListView ls;    Button btn;    EditText edt;    String NeedFindWords;    String[] strArr;    //    private static final String Path="http://192.168.1.2/song/2.DJ - 侧脸 (言寺).mp3";    private ProgressBar progressBar;    private TextView textView;    private Button button;    private int FileLength;    private int DownedFileLength=0;    private InputStream inputStream;    private URLConnection connection;    private OutputStream outputStream;    //paly music need var..................    private static final int INTERNAL_TIME = 1000;    final MediaPlayer mp = new MediaPlayer();    String song_path = "";    private SeekBar seekBar;    private TextView currentTV;    private TextView totalTV;    boolean isStop = true;    private boolean isSeekBarChanging;//互斥变量，防止进度条与定时器冲突。    private int currentposition;//当前音乐播放的进度    private Timer timer;    private ArrayList
   
     list;    private File[] songFiles;    private Handler mHandler = new Handler(new Handler.Callback() {
           @Override        public boolean handleMessage(Message message) {
               // 展示给进度条和当前时间            int progress = mp.getCurrentPosition();            seekBar.setProgress(progress);            currentTV.setText(formatTime(progress));            // 继续定时发送数据            updateProgress();            return true;        }    });    //3、使用formatTime方法对时间格式化：    private String formatTime(int length) {
           Date date = new Date(length);        //时间格式化工具        SimpleDateFormat sdf = new SimpleDateFormat("mm:ss");        String totalTime = sdf.format(date);        return totalTime;    }    //download music need var.........    private final int HANDLER_MSG_TELL_RECV = 0x124;    @SuppressLint("HandlerLeak")    Handler handlerDown = new Handler(){
           public void handleMessage(Message msg){
               //接受到服务器信息时执行//            Toast.makeText(MainActivity.this,(msg.obj).toString(),Toast.LENGTH_LONG).show();//            tv.setText((msg.obj).toString());            System.out.println((msg.obj).toString());            strArr = (msg.obj).toString().split("\n");            ArrayAdapter
    
      arrayAdapter= new ArrayAdapter
     
       (                    MainActivity.this, android.R.layout.simple_list_item_1,strArr);            ls.setAdapter(arrayAdapter);        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        TabHost tab = (TabHost) findViewById(android.R.id.tabhost);        //初始化TabHost容器        tab.setup();        //在TabHost创建标签，然后设置：标题／图标／标签页布局        tab.addTab(tab.newTabSpec("tab1").setIndicator("本地音乐" , null).setContent(R.id.tab1));        tab.addTab(tab.newTabSpec("tab2").setIndicator("网络音乐" , null).setContent(R.id.tab2));        Button btn = findViewById(R.id.button);        edt=(EditText)findViewById(R.id.editText);        ls= (ListView) findViewById(R.id.ListName);        //这个是文件下载控件        progressBar=(ProgressBar) findViewById(R.id.progress);        textView=(TextView) findViewById(R.id.text);//        button=(Button) findViewById(R.id.button);        //play music function        totalTV = findViewById(R.id.music_total_time);        currentTV = findViewById(R.id.music_current_time);        seekBar = (SeekBar) findViewById(R.id.music_seekbar);        seekBar.setOnSeekBarChangeListener(new MySeekBar());        if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE)                != PackageManager.PERMISSION_GRANTED) {
               ActivityCompat.requestPermissions(MainActivity.this,                    new String[]{
   Manifest.permission.READ_EXTERNAL_STORAGE}, 123);            return;        }        //判断是否是AndroidN以及更高的版本 N=24        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
               StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();            StrictMode.setVmPolicy(builder.build());        }        list = new ArrayList
      
       ();   //音乐列表   /sdcard/DownFile        File sdpath = Environment.getExternalStorageDirectory(); //获得手机SD卡路径/sdcard/kgmusic/download        System.out.println("******"+Environment.getExternalStorageDirectory());        File path = new File(sdpath + "//DownFile");      //获得SD卡的mp3文件夹        //返回以.mp3结尾的文件 (自定义文件过滤)        songFiles = path.listFiles(new MyFilter(".mp3"));        for (File file : songFiles) {
               list.add(file.getAbsolutePath());   //获取文件的绝对路径        }        ArrayAdapter
       
         adapter = new ArrayAdapter
        
         (MainActivity.this, android.R.layout.simple_list_item_single_choice, list); ListView li = (ListView) findViewById(R.id.listView1); li.setAdapter(adapter); li.setChoiceMode(ListView.CHOICE_MODE_SINGLE); li.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView
          parent, View view, int position, long id) { song_path = ((TextView) view).getText().toString(); currentposition = position; changeMusic(currentposition); try { mp.reset(); //重置 mp.setDataSource(song_path); mp.prepare(); //准备 mp.start(); //播放 seekBar.setMax(mp.getDuration()); isStop = false; timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { if (!isSeekBarChanging) { seekBar.setProgress(mp.getCurrentPosition()); } } }, 0, 50); } catch (Exception e) { } } }); //暂停和播放 final ImageButton btnpause = (ImageButton) findViewById(R.id.btn_pause); btnpause.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (song_path.isEmpty()) Toast.makeText(getApplicationContext(), "先选收歌曲先听听", Toast.LENGTH_SHORT).show(); if (mp.isPlaying()) { mp.pause(); //暂停 isStop = true; btnpause.setImageResource(android.R.drawable.ic_media_play); } else if (!song_path.isEmpty()) { mp.start(); //继续播放 isStop = false; btnpause.setImageResource(android.R.drawable.ic_media_pause); } } }); //上一曲和下一曲 final ImageButton previous = (ImageButton) findViewById(R.id.previous); previous.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { changeMusic(--currentposition); } }); final ImageButton next = (ImageButton) findViewById(R.id.next); next.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { changeMusic(++currentposition); } }); ls.setOnItemClickListener(new AdapterView.OnItemClickListener() { private String MusicPath=""; @Override public void onItemClick(AdapterView
          parent, View view, int position, long id) { System.out.println(id); System.out.println("********************************************");// Toast.makeText(MainActivity.this,"点击了："+position+"行",Toast.LENGTH_SHORT).show(); Toast.makeText(MainActivity.this,strArr[position],Toast.LENGTH_SHORT).show(); MusicPath=strArr[position]; //开启下载线程 DownedFileLength=0; // TODO Auto-generated method stub Thread thread=new Thread(){ public void run(){ try { DownFile(MusicPath); } catch (Exception e) { // TODO: handle exception } } }; thread.start();// System.out.println(strArr[position]);// System.out.println("********************************************"); } });// tv= (TextView) findViewById(R.id.ReData); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 响应事件 NeedFindWords=edt.getText().toString(); startNetThread(); } }); } private void startNetThread() { new Thread() { @Override public void run() { try { // 域名转化成IP 建立连接 String socketAddress ="xxxd39.vicp.cc"; InetAddress netAddress = InetAddress.getByName(socketAddress); System.out.println("+++++++++"+netAddress.getHostAddress());// Socket socket = new Socket(netAddress,8888); Socket socket = new Socket(netAddress, 10020); InputStream is = socket.getInputStream(); OutputStream out = socket.getOutputStream(); out.write(NeedFindWords.getBytes()); //3.发送 out.flush(); byte[] bytes = new byte[1024*4]; int n = is.read(bytes); Message msg = handlerDown.obtainMessage(HANDLER_MSG_TELL_RECV, new String(bytes, 0, n)); msg.sendToTarget(); is.close(); socket.close(); } catch (Exception e) { } } }.start(); } private Handler handler2=new Handler() { public void handleMessage(Message msg) { if (!Thread.currentThread().isInterrupted()) { switch (msg.what) { case 0: progressBar.setMax(FileLength); Log.i("文件长度----------->", progressBar.getMax()+""); break; case 1: progressBar.setProgress(DownedFileLength); int x=DownedFileLength*100/FileLength; textView.setText("文件已下载:"+x+"%"); Log.i("音乐已经下载---------->", x+""); break; case 2:// String[] strs=Path.split("/");// int lastSTR=0;// for(int i=0,len=strs.length;i
         
          ", "当前网络有问题"); // return; } inputStream=connection.getInputStream(); } catch (MalformedURLException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } /* * 文件的保存路径和和文件名其中Nobody.mp3是在手机SD卡上要保存的路径，如果不存在则新建 */ String savePAth= Environment.getExternalStorageDirectory()+"/DownFile"; File file1=new File(savePAth); if (!file1.exists()) { file1.mkdir(); } String savePathString=Environment.getExternalStorageDirectory()+"/DownFile/"+LastName; File file =new File(savePathString); if (!file.exists()) { try { file.createNewFile(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } /* * 向SD卡中写入文件,用Handle传递线程 handler */ Message message=new Message(); try { outputStream=new FileOutputStream(file); // byte [] buffer=new byte[1024*4];有关系 大小有关 byte [] buffer=new byte[1024*4]; FileLength=connection.getContentLength(); message.what=0; handler2.sendMessage(message);// while (DownedFileLength
          
           ", DownedFileLength+"");// Message message1=new Message();// message1.what=1;// handler2.sendMessage(message1);// } int len = -1; while (DownedFileLength
           
            ", len+""); Message message1=new Message(); message1.what=0x1; handler2.sendMessage(message1); } Message message2=new Message(); message2.what=2; handler2.sendMessage(message2); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } private void changeMusic(int position) { if (position < 0) { currentposition = position = list.size() - 1; } else if (position > list.size() - 1) { currentposition = position = 0; } song_path = songFiles[position].getAbsolutePath(); try { // 切歌之前先重置，释放掉之前的资源 mp.reset(); // 设置播放源 mp.setDataSource(song_path); // 开始播放前的准备工作，加载多媒体资源，获取相关信息 mp.prepare(); // 开始播放 mp.start(); } catch (IOException e) { e.printStackTrace(); } seekBar.setProgress(0);//将进度条初始化 seekBar.setMax(mp.getDuration());//设置进度条最大值为歌曲总时间 totalTV.setText(formatTime(mp.getDuration()));//显示歌曲总时长 updateProgress();//更新进度条 } private void updateProgress() { // 使用Handler每间隔1s发送一次空消息，通知进度条更新 Message msg = Message.obtain();// 获取一个现成的消息 // 使用MediaPlayer获取当前播放时间除以总时间的进度 int progress = mp.getCurrentPosition(); msg.arg1 = progress; mHandler.sendMessageDelayed(msg, INTERNAL_TIME); } public class MySeekBar implements SeekBar.OnSeekBarChangeListener { public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { } /*滚动时,应当暂停后台定时器*/ public void onStartTrackingTouch(SeekBar seekBar) { isSeekBarChanging = true; } /*滑动结束后，重新设置值*/ public void onStopTrackingTouch(SeekBar seekBar) { isSeekBarChanging = false; mp.seekTo(seekBar.getProgress()); } } protected void onDestroy() { super.onDestroy(); if (mp != null) { mp.stop(); mp.release(); } Toast.makeText(getApplicationContext(), "退出啦", Toast.LENGTH_SHORT).show(); }}
           
          
         
        
       
      
     
    
   

444 MyFilter.java

import java.io.File;import java.io.FilenameFilter;class MyFilter implements FilenameFilter {
       private String type;    public MyFilter(String type) {
           this.type = type;    }    @Override    public boolean accept(File dir, String name) {
           return name.endsWith(type);    }}

python 服务器程序

import socketimport sysfrom time import ctimedef FindMusicName(MusicName):    f = open('musicName3.txt','r',encoding='utf8')    for lines in f.readlines():        if lines.find("马桃")!=-1:            print(lines)            print("find it .........................")            return lines# 1.socket(socket_family, socket_type, protocol=0)# 其中，socket_family 是 AF_UNIX 或 AF_INET,ocket_type 是 SOCK_STREAM或 SOCK_DGRAM, protocol 通常省略，默认为 0。# 为了创建 TCP/IP 套接字，可以用下面的方式调用 socket.socket()。# tcpSock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 同样，为了创建 UDP/IP 套接字，需要执行以下语句。# udpSock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)ServerSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 获取本地机器名host = socket.gethostname()# 设置端口port = 10020# 2.s.bind绑定本地地址到socket对象ServerSocket.bind((host, port))# 3.s.listen监听地址端口，连接几个客户端ServerSocket.listen(2)while True:    # 4.s.accept阻塞接受链接请求，被动接受 TCP 客户端连接，一直等待直到连接到达（阻塞）    # accept()方法会返回一个含有两个元素的元组（fd,addr）。    # 第一个元素是新的socket对象，服务器通过它与客户端通信。    # 第二个元素也是元组，是客户端的地址及端口信息。    clientsocket, addr = ServerSocket.accept()    print("连接地址:%s" % str(addr))    msg = "welcomt to my demo"    all_line=""    #send()和recv()的数据格式都是bytes。    # (str和bytes的相互转化，用encode()和decode(),或者用bytes()和str())    print("send msg:welcomt to my demo.")    #clientsocket.send(msg.encode("utf-8"))    data = clientsocket.recv(1024)    print(data.decode("utf-8"))    print("显示文件歌曲查询结果")    f = open('musicName3.txt','r',encoding='utf8')    for lines in f.readlines():        if lines.find(data.decode("utf-8"))!=-1:            print(lines)            ReLines=lines.replace("F:\\KuGou\\", "http://xxxd39.vicp.cc/KuGou/");            print("find it .........................")            all_line=all_line+ReLines;            continue    data2= all_line.encode("utf-8")    print(all_line)    #data1 = ('[%s] %s' % (ctime(),data.decode())).encode("utf-8")    clientsocket.send(data2)    #clientsocket.send(str(MusicN).decode("utf-8"))    clientsocket.close()ServerSocket.close()

转载地址：https://blog.csdn.net/weixin_33595571/article/details/109504725 如侵犯您的版权，请留言回复原文章的地址，我们会给您删除此文章，给您带来不便请您谅解！