Android实现自动填充短信验证码

今天博主带给小伙伴们一个小功能，就是利用广播接收器实现自动填充短信验证码，话不多说，我们先看看如何去实现这个小功能。
首先我们需要新建一个名为SMSBroadcastReceiver的广播接收器，代码如下：

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();
                    //短信内容
                    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);

                    //过滤不需要读取的短信的发送号码，博主这里用的是关键词过滤，小伙伴们也可以用电话号去过滤
                    if (content.contains("***")&&content.contains("****")
                            &&content.contains("***")) {
                        //从短信内容中获取验证码
                        String code=getCode(content,6);
                         //回调数据
                        mMessageListener.onReceived(code);
                        abortBroadcast();
                    }
                }
            }

    }

    //回调接口
    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})是得到一个连续的YZMLENGTH位数字字母组合
        // (?<![a-zA-Z0-9])负向断言([0-9]{YZMLENGTH})前面不能有数字
        // (?![a-zA-Z0-9])断言([0-9]{YZMLENGTH})后面不能有数字出现


        //  获得数字字母组合
        //    Pattern p = Pattern   .compile("(?<![0-9])([a-zA-Z0-9]{" + YZMLENGTH + "})(?![a-zA-Z0-9])");

        //  获得纯数字
        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;
    }
}

至此我们短信的广播接收器就完成了。
之后我们需要完成注册广播接收器以及填写验证码的代码，完成代码如下：

private void initSmsReader(){
        public static final String SMS_RECEIVED_ACTION = "android.provider.Telephony.SMS_RECEIVED";
        //生成广播处理
        mSMSBroadcastReceiver = new SMSBroadcastReceiver();

        //实例化过滤器并设置要过滤的广播
        IntentFilter intentFilter = new IntentFilter(SMS_RECEIVED_ACTION);
        //设置优先级
        intentFilter.setPriority(Integer.MAX_VALUE);
        //注册广播
        this.registerReceiver(mSMSBroadcastReceiver, intentFilter);

        mSMSBroadcastReceiver.setOnReceivedMessageListener(new SMSBroadcastReceiver.MessageListener() {
            @Override
            public void onReceived(String message) {
        //在相应的编辑框中填写验证码
                passCode.setText(message);

            }
        });
    }

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

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //注销短信监听广播
        this.unregisterReceiver(mSMSBroadcastReceiver);
    }

至此我们自动填写验证码的功能就实现了。