自动填充短信验证码实现方式

自动填充短信验证码
短信验证码是大部分软件里面都存在的功能，同时为了避免用户自己输入导致的繁琐操作，有一部分app设计者将其设置成了自动填充的方式，方便用户操作那么这种方式是什么实现的呢。
利用广播接收器来拦截短信获取其中匹配的内容，提供回掉，将短信内容暴露到activity中实现自动填充
首先我们要实现一个广播接收器

package com.wquant.weilt.reciver;

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

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Message;
import android.telephony.SmsMessage;
import android.text.TextUtils;
import android.util.Log;

public class SmsReciver extends BroadcastReceiver {
    private String patternCoder = "(?;
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取短信数据
        Object[] objs = (Object[]) intent.getExtras().get("pdus");
        for (Object obj : objs) {
            byte[] pdu = (byte[]) obj;
            //将字节数组封装成为smsmessage对象
            SmsMessage sms = SmsMessage.createFromPdu(pdu);
            //获得短短信内容
            String message = sms.getMessageBody();
            Log.d("短信内容", "message：" + message);
            // 短息的手机号。。+86开头？
            String from = sms.getOriginatingAddress();
            Log.d("短信来源", "from ：" + from);
            if (!TextUtils.isEmpty(from)) {
                String code = patternCode(message);
                if (!TextUtils.isEmpty(code)) {
                    mMessageListener.onReceived(code);
                }
            }
        }
    }
    /**
     * 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;
    }

    // 回调接口
    public interface MessageListener {
        public void onReceived(String message);
    }

    MessageListener mMessageListener;

    public void setOnReceivedMessageListener(MessageListener messageListener) {
        this.mMessageListener = messageListener;
    }
}

ok上面我们已经实现了广播接收器，在activity中我们要绑定一个意图过滤器并将此广播注册在destory方法中要将其解除注册

package com.wquant.weilt.controler;

import org.apache.http.Header;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.loopj.android.http.RequestParams;
import com.wquant.weilt.MyApplication;
import com.wquant.weilt.R;
import com.wquant.weilt.control.base.JsonHttpResponseHandlerBase;
import com.wquant.weilt.control.base.MyBaseActivity;
import com.wquant.weilt.reciver.SmsReciver;
import com.wquant.weilt.reciver.SmsReciver.MessageListener;
import com.wquant.weilt.util.CToast;
import com.wquant.weilt.util.CommonUtil;
import com.wquant.weilt.util.Constant;
import com.wquant.weilt.util.HttpUtil;

/**
 * 修改密码
 * 
 * @author zhaomy
 * 
 */
public class RestartLoginOrTradPwdActivity extends MyBaseActivity {

    SmsReciver reciver;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_restart_login_or_trad);

        init();
    }

    private void init() {
        code = (EditText) findViewById(R.id.register_code);
        reciver=new SmsReciver();
        IntentFilter filter = new IntentFilter();
        // 设置短信拦截参数
        filter.addAction("android.provider.Telephony.SMS_RECEIVED");
        //设置最大优先级
        filter.setPriority(Integer.MAX_VALUE);
        registerReceiver(reciver, filter);
        reciver.setOnReceivedMessageListener(new MessageListener() {

            @Override
            public void onReceived(String message) {
                code.setText(message);
            }
        });
    }
    @Override
    protected void onPause() {
        super.onPause();
    }
    @Override
    protected void onDestroy() {
        unregisterReceiver(reciver);
        super.onDestroy();
    }
}