读取短信验证码并自动设置给文本框

转自好友http://blog.csdn.net/cool_fuwei/article/details/50455898
最近项目中用到自动读取短信验证码这一功能，本人自己封装了一个工具类，可以直接拿来用，源码如下：

import android.app.Activity;import android.content.ContentValues;import android.database.ContentObserver;import android.database.Cursor;import android.net.Uri;import android.os.Build;import android.os.Handler;import android.text.TextUtils;import android.util.Log;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) {        super.onChange(selfChange);        Log.e("tag", "onChange");        // 读取收件箱中指定号码的短信        cursor = mActivity.managedQuery(Uri.parse("content://sms/inbox"), new String[]{"_id", "address", "body", "read"}, null, null, "_id desc");        if (cursor != null && cursor.getCount() > 0) {            ContentValues values = new ContentValues();            values.put("read", "1");        //修改短信为已读模式            cursor.moveToNext();            int smsbodyColumn = cursor.getColumnIndex("body");            String smsBody = cursor.getString(smsbodyColumn);            Log.e("399", "smsBody :" + smsBody);            String verifyCode = getDynamicPassword(smsBody);            if(TextUtils.isEmpty(verifyCode)){                return;            }            if(mEditText == null) {                throw new RuntimeException("你传的EditText为空");            }                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        }        //在用managedQuery的时候，不能主动调用close()方法， 否则在Android 4.0+的系统上，         会发生崩溃        if (Build.VERSION.SDK_INT < 14) {            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 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;    }}

该工具类的使用：
在Activity的onCreate方法中注册

readSmsContent = new ReadSmsContent(new Handler(),this,mVerifyCodeEditText);

//注册短信内容监听

this.getContentResolver().registerContentObserver(Uri.parse("content://sms/"), true, readSmsContent);

在Activity的onDestroy中注销监听
//注销内容监听者

this.getContentResolver().unregisterContentObserver(readSmsContent);

需要的权限：

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