/** * 短信監聽器，用于自動填充驗證碼*/public class SMSContentObserver extends ContentObserver {  public final String SMS_URI_INBOX = "content://sms/inbox";//收信箱  private Activity activity = null;  private String smsContent = "";//驗證碼  private EditText verifyText = null;//驗證碼編輯框  private String SMS_ADDRESS_PRNUMBER = "10690329013589";//短息發送提供商  private String smsID = "";  //短信觀察者 收到一條短信時 onchange方法會執行兩次，所以比較短信id，如果一致則不處理  public SMSContentObserver(Activity activity, Handler handler, EditText verifyText) {    super(handler);    this.activity = activity;    this.verifyText = verifyText;  }  @Override  public void onChange(boolean selfChange) {    super.onChange(selfChange);    Cursor cursor = null;// 光標    // 讀取收件箱中指定號碼的短信    cursor = activity.getContentResolver().query(Uri.parse(SMS_URI_INBOX),      new String[]{"_id", "address", "body", "read"}, //要讀取的屬性      "address=? and read=?", //查詢條件是什么      new String[]{SMS_ADDRESS_PRNUMBER, "0"},//查詢條件賦值      "date desc");//排序    if (cursor != null) {      cursor.moveToFirst();      if (cursor.moveToFirst()) {        //比較和上次接收到短信的ID是否相等        if (!smsID.equals(cursor.getString(cursor.getColumnIndex("_id")))) {          String smsbody = cursor.getString(cursor.getColumnIndex("body"));          //用正則表達式匹配驗證碼          Pattern pattern = Pattern.compile("[0-9]{6}");          Matcher matcher = pattern.matcher(smsbody);          if (matcher.find()) {//匹配到6位的驗證碼            smsContent = matcher.group();            if (verifyText != null && null != smsContent && !"".equals(smsContent)) {              verifyText.requestFocus();//獲取焦點              verifyText.setText(smsContent);//設置文本              verifyText.setSelection(smsContent.length());//設置光標位置            }          }          smsID = cursor.getString(cursor.getColumnIndex("_id"));        }      }    }  }}

//實例化短信監聽器SMSContentObserver mObserver = new SMSContentObserver(getActivity(), new Handler(), mEt_auth_code);// 注冊短信變化監聽mContext.getContentResolver().registerContentObserver(Uri.parse("content://sms/"), true, mObserver);

<uses-permission android:name="android.permission.RECEIVE_SMS" /><uses-permission android:name="android.permission.READ_SMS" /><uses-permission android:name="android.permission.WRITE_SMS" />

@Overridepublic void onDestroy() {super.onDestroy();  //注銷短信監聽     mContext.getContentResolver().unregisterContentObserver(mObserver);}