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..................................\");
  }