private String patternCoder = "\\d{4}";  //正则表达式

private boolean checkPhone(String phone) {
 // TODO Auto-generated method stub  
 String c_phone = "10690032980066";  
 if(c_phone.equals(phone) )
  return true;
 return false;
}

private boolean checkString(String message){
 if(TextUtils.isEmpty(message))
  return false;
 Pattern p = Pattern.compile("FinalShares"); //这个关键字符串可以自定义
 Matcher matcher = p.matcher(message);
 if(matcher.find())
  return true;
 return false;
}

@Override
public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 smsContentObserver = new SMSContentObserver(this, mHandler); // 创建1个对象    
 registerContentObservers() ;         //注册内容观察者
}
      
private void registerContentObservers() {
 // ”表“内容观察者 ，通过测试我发现只能监听此Uri -----> content://sms
 // 监听不到其他的Uri 比如说 content://sms/outbox
 Uri smsUri = Uri.parse("content://sms");
 getContentResolver().registerContentObserver(smsUri, true,smsContentObserver);
}

private Handler mHandler = new Handler() { 
      
 public void handleMessage(Message msg) { 
  switch (msg.what) { 
   case MSG_OUTBOXCONTENT:
    String outbox = smsContentObserver.getstrContent(); 
    etSmsoutbox.setText(outbox); 
    break; 
   default: 
    break; 
  } 
 } 
};

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