Android Usb设备的监听(Dev)外设端口的判定以及耳机的插拔

import com.example.usbusb.utils.ToastUtils;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.Toast;
public class MainActivity extends Activity {
 //耳机的广播
 public static final String TAGLISTEN = "android.intent.action.HEADSET_PLUG";
 //usb线的广播
 private final static String TAGUSB = "android.hardware.usb.action.USB_STATE";
 //外设的广播
 public static final String TAGIN = "android.hardware.usb.action.USB_DEVICE_ATTACHED";
 public static final String TAGOUT = "android.hardware.usb.action.USB_DEVICE_DETACHED";
  private boolean BOOLEAN=false; 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
  //赛选器
 IntentFilter filter = new IntentFilter();
 //筛选的条件
 filter.addAction(TAGIN);
 filter.addAction(TAGOUT);
 filter.addAction(TAGUSB);
 //注册广播 动态注册
 registerReceiver(receiver, filter);
 }
 /**
 * 创建广播的类
 */
 BroadcastReceiver receiver = new BroadcastReceiver() {
 @Override
 public void onReceive(Context context, Intent intent) {
  String action = intent.getAction();
  //判断外设
  if (action.equals(TAGIN)) {
  ToastUtils.shwotoast(context, "外设已经连接");
  //Toast.makeText(context, "外设已经连接", Toast.LENGTH_SHORT).show();
  }
  if (action.equals(TAGOUT)) {
  if (BOOLEAN) {
   ToastUtils.shwotoast(context, "外设已经移除");
   //Toast.makeText(context, "外设已经移除", Toast.LENGTH_SHORT).show();
  }
  }
  //判断存储usb
  if (action.equals(TAGUSB)) {
  boolean connected = intent.getExtras().getBoolean("connected");
  if (connected) {
   ToastUtils.shwotoast(context, "USB 已经连接");
   //Toast.makeText(MainActivity.this, "USB 已经连接",Toast.LENGTH_SHORT).show();
  
  } else {
   if (BOOLEAN) {
   ToastUtils.shwotoast(context, "USB 断开");
   //Toast.makeText(MainActivity.this, "USB 断开",Toast.LENGTH_SHORT).show();
   }
  }
  }
  //判断耳机
  if (action.equals(TAGLISTEN)) {
  int intExtra = intent.getIntExtra("state", 0);
  // state --- 0代表拔出，1代表插入
  // name--- 字符串，代表headset的类型。
  // microphone -- 1代表这个headset有麦克风，0则没有
  // int i=intent.getIntExtra("",0);
  if (intExtra == 0) {
   if (BOOLEAN) {
   ToastUtils.shwotoast(context,"拔出耳机");
   //Toast.makeText(context, "拔出耳机", Toast.LENGTH_SHORT).show();
   }
  }
  if (intExtra == 1) {
   ToastUtils.shwotoast(context, "耳机插入");
   //Toast.makeText(context, "耳机插入", Toast.LENGTH_SHORT).show();
   int intType = intent.getIntExtra("microphone", 0);
   if (intType == 0) {
   ToastUtils.shwotoast(context, "没有麦克风");
   //Toast.makeText(context, "没有麦克风" + intType,Toast.LENGTH_SHORT).show();
   }
   if (intType == 1) {
   ToastUtils.shwotoast(context,"有话筒" );
   //Toast.makeText(context, "有话筒" + intType,Toast.LENGTH_SHORT).show();
   }
  } 
  }
  BOOLEAN=true;
 }
 };
 /**
 * 注销广播
 */
 protected void onDestroy() {
 unregisterReceiver(receiver);
 };
}

import android.content.Context;
import android.widget.Toast;
public class ToastUtils {
 public static Toast toast=null;
 private ToastUtils toastUtils=new ToastUtils();
 private ToastUtils(){}
  public static void shwotoast(Context context,String msg){
   if (toast==null) {
  toast=Toast.makeText(context, msg, Toast.LENGTH_SHORT);
 }else {
  if (toast!=null) {
  toast.setText(msg);
  }
 }
   toast.show(); 
 }
}

import java.util.HashMap;
import android.annotation.SuppressLint;
import android.content.Context;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbManager;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
 public class MainActivity extends ActionBarActivity {
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
    HashMap<String, UsbDevice> map = usbManager.getDeviceList();
    System.out.println("......................befor....................................");
    for(UsbDevice device : map.values()){
     System.out.println(".......one..........dName: " + device.getDeviceName());
     System.out.println(".......tow.........vid: " + device.getVendorId() + "\t pid: " + device.getProductId());
    }
    System.out.println("........................after..................................");
  }