Android实现短信验证码自动拦截读取功能

本文实例为大家分享了android短信验证码自动拦截读取 的具体代码，供大家参考，具体内容如下

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;

@override
protected 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);
}

@override
public boolean oncreateoptionsmenu(menu menu) {
 getmenuinflater().inflate(r.menu.menu_main, menu);
 return true;
}


@override
protected void ondestroy() {
 super.ondestroy();
 getcontentresolver().unregistercontentobserver(mysmsobserver);
}

@override
public 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;
}

@override
public 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。