compare string whether its in a date format ANDROID

Question

Hi i got a data that is scan from the QR code with contain DateTime . but now i want to make a validation where , the code will proceed to another activity when its scan only date and time . I post the code here

 Log.i("<<<<<<Asset Code>>>>> ",
                        "<<<<Bar Code>>> " + sym.getData());
                scanResult = sym.getData().trim();


                SimpleDateFormat dateFormat =  new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");

                if(scanResult.equals(dateFormat))
                {
                    new createClockIn().execute();
                }

                else {
                    Toast.makeText(BarcodeScanner.this, "Sorry this is not a valid date and time",  Toast.LENGTH_SHORT).show();
                    Intent intent = new Intent(getApplicationContext(), BarcodeScanner.class);
                    intent.putExtra("username", staffIDStr1);
                    startActivity(intent);

                }

but this is seems to be wrong when im scan the qr code with the date and time , its pops out the toast. The data should be inserted to the database like this

What type is scanResult? String – Christopher Mar 18 '16 at 07:41 — Christopher, Mar 18 '16 at 07:41

Christopher · Accepted Answer · 2016-03-18T08:49:52.240

0

You have to parse the ScanResult-String into a Date-Object. This is done by using parse()-method of your SimpleDateFormatter. Equals does not work here!

Try to parse your ScanResult:

SimpleDateFormat dateFormat =  new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");    
try {
    final Date dateResult = dateFormat.parse(scanResult);
    SimpleDateFormat outFormat =  new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
    final String formattedForDatabase = outFormat.format(dateResult);
    // TODO Do your stuff.
    new createClockIn().execute();
} catch (ParseException e) {
    Toast.makeText(BarcodeScanner.this, "Sorry this is not a valid date and time",  Toast.LENGTH_SHORT).show();
    Intent intent = new Intent(getApplicationContext(), BarcodeScanner.class);
    intent.putExtra("username", staffIDStr1);
    startActivity(intent);
}

edited Mar 18 '16 at 08:49

answered Mar 18 '16 at 07:43

Christopher

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Can you give me an example string of the scan result? – Christopher Mar 18 '16 at 08:04
i put the picture of my database . when qr code is scan , the data will insert to database . those data is without the validation that i want to do now – ekin idris Mar 18 '16 at 08:06
*in the question (picture) – ekin idris Mar 18 '16 at 08:07
I'm sorry, I can't believe that. This should work. What is the output of your logcat. Log.i("<<<<<>>>> ", "<<<>> " + sym.getData()); – Christopher Mar 18 '16 at 08:15
how to find in the logcat ? – ekin idris Mar 18 '16 at 08:38
Search for your tags???? "<<<<< – Christopher Mar 18 '16 at 08:42
http://developer.android.com/tools/debugging/debugging-log.html – Christopher Mar 18 '16 at 08:43
03-18 16:43:18.766 29390-29390/? I/<<<<<>>>>﹕ <<<>> 2016/03/18 16:42:08 03-18 16:43:20.221 29390-29390/? I/<<<<<>>>>﹕ <<<>> 2016/03/18 16:42:08 03-18 16:43:21.926 29390-29390/? I/<<<<<>>>>﹕ <<<>> 2016/03/18 16:42:08 – ekin idris Mar 18 '16 at 08:48
Indeed your parsing pattern was wrong. Please check my updated answer. – Christopher Mar 18 '16 at 08:52
ha yess , after i see the logcat now i realize my mistakes . thankyou for your answer and help . – ekin idris Mar 18 '16 at 08:54
accepting and upvoting an answer is the way to go on SO! :) – Christopher Mar 18 '16 at 08:56
btw , do you have any idea how to separate the data ? if possible i would like to save my data in "date" , "time" . instead of dateTime – ekin idris Mar 18 '16 at 08:58
use two different formatters. One for the date and for the time part. – Christopher Mar 18 '16 at 09:05

score 0 · Answer 2 · answered Mar 18 '16 at 07:45

0

Handle Exception like this:

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
try {
        sdf.parse(scanResult);
} catch (ParseException e) {
    // Invalid Date
    e.printStackTrace();
}

answered Mar 18 '16 at 07:45

Amy

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@ekinidris what string you are getting in scanResult? – Amy Mar 18 '16 at 07:58
what do you mean ? it supposed to be date and time . i put the picture in the question – ekin idris Mar 18 '16 at 08:04
@ekinidris in that case it is valid format – Amy Mar 18 '16 at 08:05
yes i think so too , but it still give error that it is not a valid date time format – ekin idris Mar 18 '16 at 08:08
@ekinidris don't think please debug the application and tell us what is you are getting in scanResult. – Amy Mar 18 '16 at 08:10

compare string whether its in a date format ANDROID

2 Answers2