Android如何通过手机自动获取短信验证码

public class MainActivity extends Activity {  private BroadcastReceiver smsReceiver;  private IntentFilter filter2;  private Handler handler;  private EditText et;  private String strContent;  private String patternCoder = "(?<!--//d)//d{6}(?!//d)";   @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   et = (EditText) findViewById(R.id.et);   handler = new Handler() {    public void handleMessage(android.os.Message msg) {     et.setText(strContent);    };   };   filter2 = new IntentFilter();   filter2.addAction("android.provider.Telephony.SMS_RECEIVED");   filter2.setPriority(Integer.MAX_VALUE);   smsReceiver = new BroadcastReceiver() {    @Override    public void onReceive(Context context, Intent intent) {     Object[] objs = (Object[]) intent.getExtras().get("pdus");     for (Object obj : objs) {      byte[] pdu = (byte[]) obj;      SmsMessage sms = SmsMessage.createFromPdu(pdu);      // 短信的内容      String message = sms.getMessageBody();      Log.d("logo", "message  " + message);      // 短息的手机号。。+86开头？      String from = sms.getOriginatingAddress();      Log.d("logo", "from  " + from);      Time time = new Time();      time.set(sms.getTimestampMillis());      String time2 = time.format3339(true);      Log.d("logo", from + " " + message + " " + time2);      strContent = from + " " + message;      handler.sendEmptyMessage(1);      if (!TextUtils.isEmpty(from)) {       String code = patternCode(message);       if (!TextUtils.isEmpty(code)) {        strContent = code;        handler.sendEmptyMessage(1);       }      }     }    }   };   registerReceiver(smsReceiver, filter2);  }   @Override  protected void onDestroy() {   super.onDestroy();   unregisterReceiver(smsReceiver);  }   /**   * 匹配短信中间的6个数字（验证码等）   *   * @param patternContent   * @return   */  private String patternCode(String patternContent) {   if (TextUtils.isEmpty(patternContent)) {    return null;   }   Pattern p = Pattern.compile(patternCoder);   Matcher matcher = p.matcher(patternContent);   if (matcher.find()) {    return matcher.group();   }   return null;  } }</pre-->