Android:检测短信传出,不正确的计数

Question

我正在尝试创建一个应用程序来计算来自手机的外发短信的数量.目前我有以下代码:

private void listenForSMS(){
    Log.v("SMSTEST", "STARTED LISTENING FOR SMS OUTGOING");
    Handler handle = new Handler(){};

    SMSObserver myObserver = new SMSObserver(handle);

    ContentResolver contentResolver = getContentResolver();
    contentResolver.registerContentObserver(Uri.parse("content://sms"),true, myObserver);
}

private class SMSObserver extends ContentObserver{

    int count = 0;
    String lastMessage = null;

    public SMSObserver(Handler handler) {
        super(handler);
    }

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

        Log.v("SMSTEST", "HIT ON CHANGE");

        Uri uriSMSURI = Uri.parse("content://sms");
        Cursor cur = getContentResolver().query(uriSMSURI, null, null,
                     null, null);
        cur.moveToNext();
        String protocol = cur.getString(cur.getColumnIndex("protocol"));
        if(protocol == null){
            count++;
            Log.v("SMSTEST", "SMS SENT: count: " + count);
            String content = cur.getString(cur.getColumnIndex("body"));

        }else{
            Log.v("SMSTEST", "SMS RECIEVED");
        }
    }
}

当我发送一页短信时,onChange被称为3次.当我发送两页短信时,onChange被叫4次.3页留言,被叫5次; 等等.

注意:我尝试过其他变体Uri.parse("content://sms"),例如"content:// sms/sent",除了"content:// sms"之外,还有其他变种onChange被调用.

如何唯一地区分外发短信并准确计算发送的短信数量？

Answer 1

我找到了解决问题的方法。SMS 和 MMS 可以通过其 _id 值进行唯一区分。

Uri uriSMSURI = Uri.parse("content://sms");
    Cursor cur = getContentResolver().query(uriSMSURI, null, null,
                 null, null);
    cur.moveToNext();
String id = cur.getString(cur.getColumnIndex("_id"));