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>