短信接收拦截

接收短信也是比较方便的，主要是继承BroadcaseReceiver 类 ,覆盖onReceive 函数： 

1:相关类： 
android.content.BroadcastReceiver 
android.telephony.gsm.SmsMessage; 

2:example code. 

public class MessageDemo extends BroadcastReceiver { 
    private static final String strACT = "android.provider.Telephony.SMS_RECEIVED"; 

public void onReceive(Context context, Intent intent) { 
if (intent.getAction().equals(strACT)) { 
StringBuilder sb = new StringBuilder(); 
Bundle bundle = intent.getExtras(); 
if (bundle != null) { 
Object[] pdus = (Object[]) bundle.get("pdus"); 
SmsMessage[] msg = new SmsMessage[pdus.length]; 
for (int i = 0; i < pdus.length; i++) { 
msg[i] = SmsMessage.createFromPdu((byte[]) pdus[i]); 
} 
for (SmsMessage currMsg : msg) { 
sb.append("From:"); 
sb.append(currMsg.getDisplayOriginatingAddress()); 
sb.append("/nMessage:"); 
sb.append(currMsg.getDisplayMessageBody()); 
} 
} 
} 

} 
} 
3: 相关的配置 

修改AndroidManifest.xml，在Activity下添加receiver节点： 
<receiver android:name="MessageDemo"> 
<intent-filter> 
<action android:name="android.provider.Telephony.SMS_RECEIVED" /> 
</intent-filter> 
</receiver> 
随后在application下添加节点： 
<uses-permission android:name="android.permission.SEND_SMS"></uses-permission> 
<uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission> 

4:使用BroadReceiver的弊端 
查看BroadReceiver sdk reference , 可以了解到所有的BroadReceiver对短信的接收是无顺序的状态 ，即使是使用了Ordered broadcasts对于同等优先级别的BroadReceiver ,也会产生无顺序的行为。 
所以下面介绍另一种接收短信的行为，包括其中可以进行短信的删除。 

5：从数据库端监听sms的收发 
//如下 主要用于内部数据库改变，向外面的界面(Activity)做反应 
class SMSHandler extends Handler 
{ 
    public void handleMessage(Message msg) 
    { 
        //Handle message 
    } 
} 

// 对收到短消息后，做出的处理,这里直接删除，并没有反应到界面，所以上面的handleMessage是空的。 
class SMSObserver extends ContentObserver 
{ 
    private Handle m_handle = null; 

    public SMSObserver(Handle handle) 
    { 
        super(handle); 
        m_handle = handle; 
    } 

    public void onChange(boolean bSelfChange) 
    { 
        super.onChange(bSelfChange); 

        //Send message to Activity 
        Message msg = new Message(); 
        msg.obj = "xxxxxxxxxx"; 
        m_handle.sendMessage(msg); 

String strUriInbox = "content://sms/inbox"; 
Uri uriSms = Uri.parse(strUriInbox);  //If you want to access all SMS, just replace the uri string to "content://sms/" 
Cursor c = mContext.getContentResolver().query(uriSms, null, null, null, null); 
// delete all sms here when every new sms occures. 
while (c.moveToNext()) 
{    
       //Read the contents of the SMS; 
       for(int i; i < c.getColumnCount(); i++) 
        { 
            String strColumnName = c.getColumnName(i); 
            String strColumnValue = c.getString(i); 
        } 


       //Delete the SMS      
       String uri = "content://sms"; 
       mContext.getContentResolver().delete(Uri.parse(uri), null, null);        
    
} 

          


    } 
} 

//把基本类功能性地应用起来 
ContentResolver contentResolver = getContentResolver();// Context 环境下getContentResolver() 
Handler handler = new SMSHandler(); 
ContentObserver m_SMSObserver = new SMSObserver(handler); 
contentResolver.registerContentObserver(Uri.parse("content://sms"),true, m_SMSObserver); 
//Register to observe SMS in outbox,we can observe SMS in other location by changing Uri string, such as inbox, sent, draft, outbox, etc.) 

// some Available Uri string  for sms. 
/*  
  String strUriInbox = "content://sms/inbox";//SMS_INBOX:1 
  String strUriFailed = "content://sms/failed";//SMS_FAILED:2 
  String strUriQueued = "content://sms/queued";//SMS_QUEUED:3 
  String strUriSent = "content://sms/sent";//SMS_SENT:4 
  String strUriDraft = "content://sms/draft";//SMS_DRAFT:5 
  String strUriOutbox = "content://sms/outbox";//SMS_OUTBOX:6 
  String strUriUndelivered = "content://sms/undelivered";//SMS_UNDELIVERED 
  String strUriAll = "content://sms/all";//SMS_ALL 
  String strUriConversations = "content://sms/conversations";//you can delete one conversation by thread_id 
  String strUriAll = "content://sms"//you can delete one message by _id 
*/ 

REMEBER: must request following permission 
1) Read SMS 
    <uses-permssion android:name="android.permission.READ_SMS" /> 
2) Delete/Modify/Send SMS 
    <uses-permssion android:name="android.permission.WRITE_SMS" /> 
in AndroidManifest.xml