四大组件之一 BroadcastReceiver （拦截短信并屏蔽系统的Notification .）

拦截短信有几个关键点：

1.android接收短信时是以广播的方式

2.程序只要在自己的Manifest.xml里加有"接收"SMS的权限

<uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>

3.要写个广播接收类

public class smsreceiveandmask extends BroadcastReceiver {  
    private String TAG = "smsreceiveandmask";  
    @Override  
    public void onReceive(Context context, Intent intent) {  
          
    } 

4.Manifest.xml的receiver标签里要加入intent-filter ,action为

<action android:name="android.provider.Telephony.SMS_RECEIVED" /> 

5.重要的是要在这个intent-filter上加上priority优先级，以使自己接收到SMS优先于系统或其它软件

<receiver android:name=".smsreceiveandmask" >  
   <intent-filter android:priority="1000">   
        <action android:name="android.provider.Telephony.SMS_RECEIVED" />  
   </intent-filter>  
</receiver>  

6.当自己的程序接收到要屏蔽的SMS后，用this.abortBroadcast();来结束广播的继续发给别的程序，这样系统就不会收到短信广播了，Notification也不会有提示了

// 第三步:取消  
if (flags_filter) {  
      this.abortBroadcast();  
}  

源码如下：

Manifest.xml

<?xml version="1.0" encoding="utf-8"?>  
<manifest xmlns:android="http://schemas.android.com/apk/res/android"  
    package="com.hwttnet.test.smsreceiveandmask" android:versionCode="1"  
    android:versionName="1.0">  
    <uses-sdk android:minSdkVersion="3" />  
    <uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>  
    <application android:icon="@drawable/icon" android:label="@string/app_name">  
        <receiver android:name=".smsreceiveandmask" >  
            <intent-filter android:priority="1000">   
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />  
            </intent-filter>  
        </receiver>  
    </application>  
</manifest>  

BroadcastReceiver类：

package com.hwttnet.test.smsreceiveandmask;  
import android.app.Activity;  
import android.content.BroadcastReceiver;  
import android.content.Context;  
import android.content.Intent;  
import android.os.Bundle;  
import android.telephony.SmsMessage;  
import android.util.Log;  
public class smsreceiveandmask extends BroadcastReceiver {  
    private String TAG = "smsreceiveandmask";  
    @Override  
    public void onReceive(Context context, Intent intent) {  
        Log.v(TAG, ">>>>>>>onReceive start");  
        // 第一步、获取短信的内容和发件人  
        StringBuilder body = new StringBuilder();// 短信内容  
        StringBuilder number = new StringBuilder();// 短信发件人  
        Bundle bundle = intent.getExtras();  
        if (bundle != null) {  
            Object[] _pdus = (Object[]) bundle.get("pdus");  
            SmsMessage[] message = new SmsMessage[_pdus.length];  
            for (int i = 0; i < _pdus.length; i++) {  
                message[i] = SmsMessage.createFromPdu((byte[]) _pdus[i]);  
            }  
            for (SmsMessage currentMessage : message) {  
                body.append(currentMessage.getDisplayMessageBody());  
                number.append(currentMessage.getDisplayOriginatingAddress());  
            }  
            String smsBody = body.toString();  
            String smsNumber = number.toString();  
            if (smsNumber.contains("+86")) {  
                smsNumber = smsNumber.substring(3);  
            }  
            // 第二步:确认该短信内容是否满足过滤条件  
            boolean flags_filter = false;  
            if (smsNumber.equals("10086")) {// 屏蔽10086发来的短信  
                flags_filter = true;  
                Log.v(TAG, "sms_number.equals(10086)");  
            }  
            // 第三步:取消  
            if (flags_filter) {  
                this.abortBroadcast();  
            }  
        }  
        Log.v(TAG, ">>>>>>>onReceive end");  
    }  
}