如果是在注册的静态广播一般必须含有以上的权限，这里必须注意添加
如果在代码中注册广播则必须iFilter.addDataScheme("file")
这样接受广播判断U盘
public class RemovableDiskManagerReceiver extends BroadcastReceiver {
public RemovableDiskManagerReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
Log.e("U","接受到广播");
// TODO Auto-generated method stub
if( intent.getAction().equals(Intent.ACTION_MEDIA_MOUNTED )){
Intent serviceintent=new Intent(context,USBCopySeverice.class);
serviceintent.setAction(TAG_SET.USB_INTENT.USB_ADD);
context.startService(serviceintent);
LogUtils.eLog("U盘工具","U盘插入！");
}else if(intent.getAction().equals(Intent.ACTION_MEDIA_UNMOUNTED)
|| intent.getAction().equals(Intent.ACTION_MEDIA_REMOVED)){
Intent serviceintent=new Intent(context,USBCopySeverice.class);
serviceintent.setAction(TAG_SET.USB_INTENT.USB_OFFLINE);
context.startService(serviceintent);
LogUtils.eLog("U盘工具","U盘拔出！");
}
};
}
