Android之与当前连接的wifi进行文件夹的浏览与传输

先上传jar文件；ConnectWifi.jar.zip

上传源文件：org.zip

使用实例及相应的注释；

import java.io.File;
import java.net.InetAddress;
import org.swiftp.Defaults;
import org.swiftp.FTPServerService;
import org.swiftp.Globals;
import org.swiftp.UiUpdater;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.View;

public class MainActivity extends Activity {

    private Context context;
    
    // 处理
    public Handler handler = new Handler() {
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case 0: // We are being told to do a UI update
                    // If more than one UI update is queued up, we only need to
                    // do one.
                    removeMessages(0);
                    updateUi();
                    break;
                case 1: // We are being told to display an error message
                    removeMessages(1);
            }
        }
    };
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        context = this;
        
        // 实例化Globals
        Globals.setContext(context);
    }

    public void start(View view){
        
        Globals.setLastError(null);
        
        // 注册更新界面的handler
        UiUpdater.registerClient(handler);
        
        // 需要打开的对应目录
        File chrootDir = new File(Defaults.chrootDir);
        if (!chrootDir.isDirectory())
            return;

        // 打开FTP服务
        Intent intent = new Intent(context, FTPServerService.class);

        Globals.setChrootDir(chrootDir);
        if (!FTPServerService.isRunning()) {
            if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
                context.startService(intent);
                
            }
        } else {
            context.stopService(intent);
        }
    }
    
    // 绑定后的界面回调更新
    public void updateUi() {
         InetAddress address = FTPServerService.getWifiIp();
         if (address != null) {
             String port = ":" + FTPServerService.getPort();
             System.out.println("ftp://" + address.getHostAddress() + (FTPServerService.getPort() == 21 ? "" : port));

         } 
    }
    
    
    @Override
    protected void onStop() {
        super.onStop();
        // 反注册更新界面
        UiUpdater.unregisterClient(handler);
    }
}