import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.view.Menu;import android.view.MenuItem;import android.widget.EditText;public class MainActivity extends AppCompatActivity {public static final int MSG_RECEIVER_CODE = 1;private EditText smsEt;private Handler handler = new Handler() { @Override public void handleMessage(Message msg) {  switch (msg.what) {   case MSG_RECEIVER_CODE:    String message= (String) msg.obj;    smsEt.setText(message);    smsEt.setSelection(message.length());    break;   default:    break;  } }};private MySmsObserver mySmsObserver;@Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); smsEt = (EditText) findViewById(R.id.smsEt); mySmsObserver = new MySmsObserver(this, handler); Uri uri=Uri.parse("content://sms"); getContentResolver().registerContentObserver(uri,true, mySmsObserver);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_main, menu); return true;}@Overrideprotected void onDestroy() { super.onDestroy(); getContentResolver().unregisterContentObserver(mySmsObserver);}@Overridepublic boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.action_settings) {  return true; } return super.onOptionsItemSelected(item);}}

import android.content.Context;import android.database.ContentObserver;import android.database.Cursor;import android.net.Uri;import android.os.Handler;import android.util.Log;import java.util.regex.Matcher;import java.util.regex.Pattern;/*** Created by Nate on 2015/9/28.*/public class MySmsObserver extends ContentObserver {private Context mContext;private Handler mHandler;public MySmsObserver(Context context, Handler handler) { super(handler); this.mContext = context; this.mHandler = handler;}@Overridepublic void onChange(boolean selfChange, Uri uri) { super.onChange(selfChange, uri); if (uri.toString().equals("content://sms/raw")) {  return; } Uri queryUri = Uri.parse("content://sms/inbox"); String code = ""; Cursor cursor = mContext.getContentResolver().query(queryUri, null, null, null, "date desc"); if (cursor != null) {  if (cursor.moveToFirst()) {   String address = cursor.getString(cursor.getColumnIndex("address"));   String message = cursor.getString(cursor.getColumnIndex("body"));   // TODO: 2015/9/28 這里可以根據address做一些自己的判斷，比如只有特定的手機號才做判斷   Log.e("guxuewu", "address:==>" + address + " message:==>" + message);   // TODO: 2015/9/28 這里可以根據自己的項目進行特定的正則表達式的編寫    Pattern pattern = Pattern.compile("(//d{6})");   Matcher matcher = pattern.matcher(message);   if (matcher.find()) {    code = matcher.group(0);    mHandler.obtainMessage(MainActivity.MSG_RECEIVER_CODE, code).sendToTarget();   }  }  cursor.close(); }}}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity"><EditText android:id="@+id/smsEt" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:ems="10" /></RelativeLayout>