Android采取ContentObserver方式自动获取验证码

 /** * Created by weifeiyang on 2016/7/29 0029. */ import android.app.Activity; import android.content.SharedPreferences; import android.database.ContentObserver; import android.database.Cursor; import android.net.Uri; import android.os.Handler; import android.text.TextUtils; import android.widget.EditText; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * 读取短信验证码，并设置验证码 * Created by cool on 2016/1/4. */ public class ReadSmsContent extends ContentObserver { private Cursor cursor = null; private Activity mActivity; private EditText mEditText; public ReadSmsContent(Handler handler, Activity activity, EditText editText) { super(handler); this.mActivity = activity; this.mEditText = editText; } @Override public void onChange(boolean selfChange, Uri uri) { /* 第一次回调 不是我们想要的 直接返回 目前发现每次收到新短信都会走好几次onChange(), 可以通过这个方法来使得onChange中的方法只走一次 */ if (uri.toString().equals("content://sms/raw")) { return; } /* 读取收件箱中的短信 address 发件人手机号码: body 信息内容: read 是否查看: date 发送时间: */ cursor = mActivity.getContentResolver().query(Uri.parse("content://sms/inbox"), new String[]{"_id", "address", "body", "read"}, null, null, "_id desc");//按降序排列 //  指定号码 //  mActivity.managedQuery(Uri.parse("content://sms/inbox"), //    new String[]{"_id", "address", "body", "read"}, "address=? and read=?", new String[]{"10086", "0"}, "_id desc"); if (null != cursor && cursor.getCount() > 0) { cursor.moveToNext();//指向首位 int smsbodyColumn = cursor.getColumnIndex("body");//body位置 String smsBody = cursor.getString(smsbodyColumn);//获取内容 String verifyCode = getDynamicPassword(smsBody); if (TextUtils.isEmpty(verifyCode)) { return; } if (mEditText == null) { throw new RuntimeException("你传的EditText为空"); } if (verifyCode.contains("你从服务器上获取到的验证码"))) { mEditText.setText(verifyCode); //EditText获取焦点，3个属性必须同时设置 mEditText.setFocusable(true); mEditText.setFocusableInTouchMode(true); mEditText.requestFocus(); mEditText.setSelection(verifyCode.length());//设置光标位置 } } if (!cursor.isClosed()) { cursor.close(); } } /** * 从字符串中截取连续4位数字 * 用于从短信中获取动态密码 * * @param str 短信内容 * @return 截取得到的4位动态密码 */ public static String getDynamicPassword(String str) { Pattern continuousNumberPattern = Pattern.compile("[0-9\\.]+"); Matcher m = continuousNumberPattern.matcher(str); String dynamicPassword = ""; while (m.find()) { if (m.group().length() == 4) { dynamicPassword = m.group(); } } return dynamicPassword; } } 

 /** * 初始化短信监听数据库 */ private void initSmSContentObserver() { readSmsContent = new ReadSmsContent(new Handler(), this, seCodeEditText); //注册短信内容监听 this.getContentResolver().registerContentObserver(Uri.parse("content://sms/"), true, readSmsContent); }