public class SMSBroadcastReceiver extends BroadcastReceiver {

  private static MessageListener mMessageListener;

  public SMSBroadcastReceiver() {
    super();
  }

  @Override
  public void onReceive(Context context, Intent intent) {
      public static final String SMS_RECEIVED_ACTION = "android.provider.Telephony.SMS_RECEIVED";
      if (intent.getAction().equals(SMS_RECEIVED_ACTION)) {
        Object[] pdus = (Object[]) intent.getExtras().get("pdus");
        for(Object pdu:pdus) {
          SmsMessage smsMessage = SmsMessage.createFromPdu((byte [])pdu);
          String sender = smsMessage.getDisplayOriginatingAddress();
          //短信內容
          String content = smsMessage.getDisplayMessageBody();
          long date = smsMessage.getTimestampMillis();
          Date tiemDate = new Date(date);
          SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
          String time = simpleDateFormat.format(tiemDate);

          //過濾不需要讀取的短信的發(fā)送號碼，博主這里用的是關鍵詞過濾，小伙伴們也可以用電話號去過濾
          if (content.contains("***")&&content.contains("****")
              &&content.contains("***")) {
            //從短信內容中獲取驗證碼
            String code=getCode(content,6);
             //回調數(shù)據(jù)
            mMessageListener.onReceived(code);
            abortBroadcast();
          }
        }
      }

  }

  //回調接口
  public interface MessageListener {
    public void onReceived(String message);
  }

  public void setOnReceivedMessageListener(MessageListener messageListener) {
    this.mMessageListener = messageListener;
  }

  public static String getCode(String body, int YZMLENGTH) {
    // 首先([a-zA-Z0-9]{YZMLENGTH})是得到一個連續(xù)的YZMLENGTH位數(shù)字字母組合
    // (?<![a-zA-Z0-9])負向斷言([0-9]{YZMLENGTH})前面不能有數(shù)字
    // (?![a-zA-Z0-9])斷言([0-9]{YZMLENGTH})后面不能有數(shù)字出現(xiàn)


    // 獲得數(shù)字字母組合
    //  Pattern p = Pattern  .compile("(?<![0-9])([a-zA-Z0-9]{" + YZMLENGTH + "})(?![a-zA-Z0-9])");

    // 獲得純數(shù)字
    Pattern p = Pattern.compile("(?<![0-9])([0-9]{" + YZMLENGTH+ "})(?![0-9])");

    Matcher m = p.matcher(body);
    if (m.find()) {
      System.out.println(m.group());
      return m.group(0);
    }
    return null;
  }
}

private void initSmsReader(){
    public static final String SMS_RECEIVED_ACTION = "android.provider.Telephony.SMS_RECEIVED";
    //生成廣播處理
    mSMSBroadcastReceiver = new SMSBroadcastReceiver();

    //實例化過濾器并設置要過濾的廣播
    IntentFilter intentFilter = new IntentFilter(SMS_RECEIVED_ACTION);
    //設置優(yōu)先級
    intentFilter.setPriority(Integer.MAX_VALUE);
    //注冊廣播
    this.registerReceiver(mSMSBroadcastReceiver, intentFilter);

    mSMSBroadcastReceiver.setOnReceivedMessageListener(new SMSBroadcastReceiver.MessageListener() {
      @Override
      public void onReceived(String message) {
    //在相應的編輯框中填寫驗證碼
        passCode.setText(message);

      }
    });
  }

  @Override
  protected void onStart() {
    super.onStart();
    initSmsReader();
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    //注銷短信監(jiān)聽廣播
    this.unregisterReceiver(mSMSBroadcastReceiver);
  }