Android 4.0 does not recognize null

Question

I have custom gridview adapter in the getview method I am checking String for NULL or Empty, but the condition does not seem to work as it prints string "null" to the textview below is the code

if(!ThisAttendee.AllocatedTable.equals(null) && ThisAttendee.AllocatedTable.toLowerCase().trim() != "null" && !ThisAttendee.AllocatedTable.trim().isEmpty())
        {
            ((TextView)(gridviewitem.findViewById(R.id.tv_attendeetable))).setText("Table: "+ThisAttendee.AllocatedTable);
        }

score 1 · Accepted Answer · edited May 23 '17 at 12:18

1

You need to use .equals() instead of == to check if the String is "null", and == instead of equals() to check for null.

See https://stackoverflow.com/a/767379/675383

edited May 23 '17 at 12:18

Community

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answered Jun 09 '13 at 12:55

nhaarman

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I have changed it to `if(ThisAttendee.AllocatedTable != null && !ThisAttendee.AllocatedTable.toLowerCase().trim().equals("null") && !ThisAttendee.AllocatedTable.trim().equals("")) { ((TextView)(gridviewitem.findViewById(R.id.tv_attendeetable))).setText("Table: "+ThisAttendee.AllocatedTable); }` now it prints text table only I tried what you suggested above but same result – Syed Waqas Jun 09 '13 at 13:04
actually the text table was coming from the xml where I was hardcoding textview to text to be visible in the design mode ;) – Syed Waqas Jun 09 '13 at 13:10

Android 4.0 does not recognize null

1 Answers1