Android实现短信验证码自动拦截读取功能

知识准备：1.观察者模式的理解【文章稍后来到~~】2.Android的Cursor使用【Android基础】3.正则表达式使用【Java基础】4.Handler使用【Android基础】

代码整理：

MainActivity.java

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);}}

MySmsObserver.java

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 这里可以根据address做一些自己的判断，比如只有特定的手机号才做判断      Log.e("guxuewu", "address:==>" + address + " message:==>" + message);      // TODO: 2015/9/28 这里可以根据自己的项目进行特定的正则表达式的编写       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();  }}}

activity_main.xml

<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>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

接受失败也等于给了自己从零开始的机会，