//就直接上代码了吧

public class ScreenTest extends Activity {class SmsContent extends ContentObserver{private Cursor cursor = null;public SmsContent(Handler handler) {super(handler);}/*** @Description 当短信表发送改变时，调用该方法 *                                 需要两种权限*                                 android.permission.READ_SMS读取短信*                                 android.permission.WRITE_SMS写短信* @Author Snake* @Date 2010-1-12*/@Overridepublic void onChange(boolean selfChange) {// TODO Auto-generated method stubsuper.onChange(selfChange);//读取收件箱中指定号码的短信cursor = managedQuery(Uri.parse("content://sms/inbox"), new String[]{"_id", "address", "read"}, " address=? and read=?", new String[]{"12345678901", "0"}, "date desc");if (cursor != null){ContentValues values = new ContentValues();values.put("read", "1");                //修改短信为已读模式cursor.moveToFirst();while (cursor.isLast()){//更新当前未读短信状态为已读getContentResolver().update(Uri.parse("content://sms/inbox"), values, " _id=?", new String[]{""+cursor.getInt(0)});cursor.moveToNext();}}}}/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);SmsContent content = new SmsContent(new Handler());//注册短信变化监听this.getContentResolver().registerContentObserver(Uri.parse("content://sms/"), true, content); }
}