Skip to main content

NullPointerException - What to do?

Image
By User



I'm experiencing a NullpointerException with this code:







kuglebutton.setOnClickListener(new OnClickListener() {



        @Override

        public void onClick(View v) {



            if(toggle.isChecked())

            {                   

                counter1 = counter1 + 10;

                column1tv.setText("" + counter1);                   

            }

            else

            {           

                counter1 = counter1 - 2;

                column1tv.setText("" + counter1);           

            }

        }                   

});







Can anyone tell me what i'm doing wrong, and maybe how to fix it?


Labels:

Comments

  1. Tips For AllMarch 1, 2012 at 9:34 AM

    As blackbelt said, something is null. Use logcat to see exactly where you get the exception. When you found the place, the problem is sometimes obvious.

    ReplyDelete

Post a Comment

Popular posts from this blog

Why is this Javascript much *slower* than its jQuery equivalent?

By User
I have a HTML list of about 500 items and a "filter" box above it. I started by using jQuery to filter the list when I typed a letter (timing code added later): $('#filter').keyup( function() { var jqStart = (new Date).getTime(); var search = $(this).val().toLowerCase(); var $list = $('ul.ablist > li'); $list.each( function() { if ( $(this).text().toLowerCase().indexOf(search) === -1 ) $(this).hide(); else $(this).show(); } ); console.log('Time: ' + ((new Date).getTime() - jqStart)); } ); However, there was a couple of seconds delay after typing each letter (particularly the first letter). So I thought it may be slightly quicker if I used plain Javascript (I read recently that jQuery's each function is particularly slow). Here's my JS equivalent: document.getElementById('filter').addEventListener( 'keyup', function () { var jsStart = (new Date).getTime()...
3 comments
Read more

Is it possible to have IF statement in an Echo statement in PHP

By User
Thanks in advance. I did look at the other questions/answers that were similar and didn't find exactly what I was looking for. I'm trying to do this, am I on the right path? echo " <div id='tabs-".$match."'> <textarea id='".$match."' name='".$match."'>". if ($COLUMN_NAME === $match) { echo $FIELD_WITH_COLUMN_NAME; } else { } ."</textarea> <script type='text/javascript'> CKEDITOR.replace( '".$match."' ); </script> </div>"; I am getting the following error message in the browser: Parse error: syntax error, unexpected T_IF Please let me know if this is the right way to go about nesting an IF statement inside an echo. Thank you.
5 comments
Read more