Why is the Safe Area in React PWA is always 0px?

Question

Hi I'am building a PWA with react and I've been trying to add a padding to my Footer to avoid the safe area, but for some reason it's always 0px;

I have these tags in HTML:

<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover">
<meta name="mobile-web-app-capable" content="yes">

And I'm trying to set the CSS like this for my footer:

padding-bottom: env(safe-area-inset-bottom);

It's always 0px!

Answer 1

The best way for doing this is, firstly you must create your own function for getting this field (FIYNUM_0) value by using PERIOD table primary key id field, and on this function, we will be controlling the existing column FIYNUM_0. If a column exists we return this field value from PERIOD table by using the input parameter as id field. Else we will return ''. For Example:

Create function GET_FIYNUM_0 
(
    @table_id integer
)  
returns 
    varchar(200)  
begin  
  declare 
  @pdata varchar(200)
  
    IF (exists(select tbl.object_id 
               from sys.columns col 
               inner join sys.tables tbl on tbl.object_id = col.object_id 
               where col.name = 'FIYNUM_0' and tbl.name = 'PERIOD')) 
    begin 
            SELECT @pdata = FIYNUM_0 from TEST_DB.dbo.PERIOD where id = @table_id
    end else 
    begin 
            SET @pdata = ''
    end
    
    RETURN @pdata
end

But after then, we can create our view very-very easily. Example:

CREATE VIEW PERIOD_FCY
AS
SELECT   
    dbo.GET_FIYNUM_0(PER.ID) as MYFIELD
from 
    TEST_DB.dbo.PERIOD PER

This GET_FIYNUM_0(PER.ID) will return FIYNUM_0 field value when if this column exists, but in else will be return empty string.