Android利用CursorLoader实现短信验证码自动填写

package com.wuwang.demo;

import android.content.ContentValues;
import android.content.Context;
import android.database.ContentObserver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.util.Log;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * <p>Author : Wuwang </p>
 * <p>Company : ZhiJiaKeJi</p>
 * <p>Date :2016-07-21 09:16</p>
 * <p>Description : 验证码自动填充</p>
 */
public class VerificationCodeAutoFill implements LoaderManager.LoaderCallbacks<Cursor> {

  private Context context;
  private OnNewMessageListener listener;
  private String msgRegular;

  public VerificationCodeAutoFill(Context context){
    this(context,null,null);
  }

  public VerificationCodeAutoFill(Context context,OnNewMessageListener listener){
    this(context,listener,null);
  }

  /**
   * @param context
   * @param listener 新短信监听
   * @param msgRegular 对新短信处理的正则表达式，如果为空，则不进行处理
   */
  public VerificationCodeAutoFill(Context context, OnNewMessageListener listener,String msgRegular){
    this.context=context;
    this.listener=listener;
    this.msgRegular=msgRegular;
  }

  public VerificationCodeAutoFill registerTo(int id,LoaderManager manager){
    manager.initLoader(id,null,this);
    return this;
  }

  @Override
  public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    return new CursorLoader(context,Uri.parse("content://sms/inbox"),
        new String[] { "_id", "address", "read", "body" },
        " read=?",
        new String[] {"0" }, "_id desc");
  }

  @Override
  public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
    // 按id排序，如果按date排序的话，修改手机时间后，读取的短信就不准了
    if (data != null && data.getCount() > 0) {
      ContentValues values = new ContentValues();
      values.put("read", "1"); // 修改短信为已读模式
      data.moveToNext();
      int smsbodyColumn = data.getColumnIndex("body");
      String smsBody = data.getString(smsbodyColumn);
      Log.e("wuwang",smsBody);
      if(listener!=null){
        listener.onNewMessage(getDynamicPassword(smsBody,msgRegular));
      }
    }
  }

  @Override
  public void onLoaderReset(Loader<Cursor> loader) {

  }

  public interface OnNewMessageListener {
    void onNewMessage(String msg);
  }

  private String getDynamicPassword(String str,String regular) {
    if(regular==null)return str;
    Pattern continuousNumberPattern = Pattern.compile(msgRegular);
    Matcher m = continuousNumberPattern.matcher(str);
    String dynamicPassword = "";
    while (m.find()) {
      System.out.print(m.group());
      dynamicPassword = m.group();
    }
    return dynamicPassword;
  }

}

//匹配四位数字的短信验证码
new VerificationCodeAutoFill(this, new VerificationCodeAutoFill.OnNewMessageListener() {
      @Override
      public void onNewMessage(String msg) {
        //etMsg.setText(msg); //验证码填充
      }
    }, "\\d{4}").registerTo(1,getSupportLoaderManager());