android 监听 USB 拔插广播消息

USBBroadcastReceiver.java

 package com.example.communication;

 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.widget.Toast;

 public class USBBroadcastReceiver extends BroadcastReceiver{
     @Override
     public void onReceive(Context context, Intent intent) {
         // TODO Auto-generated method stub
         if(intent.getAction().equals("android.hardware.usb.action.USB_STATE")){
              if (intent.getExtras().getBoolean("connected")){
                 // usb 插入
                  Toast.makeText(context, "插入", Toast.LENGTH_LONG).show();
               }else{
                //   usb 拔出
                   Toast.makeText(context, "拔出", Toast.LENGTH_LONG).show();
               }
         }
     }
 }

AndroidManifest.xml

 <receiver android:name=".USBBroadcastReceiver">
    <intent-filter android:priority="800">
        <action android:name="android.hardware.usb.action.USB_STATE"/>
     </intent-filter>
 </receiver>