Question

how do i save table data?

Asked by: dx100

Hi,

I've written a j2me applicatiion and managed to save data for various fields in a record store and get it to load again when the program reopens ... my problem is that i have no clue on how to save table data. I followed this tutorial http://blogs.sun.com/bblog/entry/how_to_edit_cells_in to edit tables but how do i save this data and call it again?

Thanks

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Asked On
2007-09-03 at 15:51:47ID22804291
Tags

j2me

,

data

,

save

,

table

Topics

Java 2 Micro-Edition (J2ME)

,

NetBeans IDE

Participating Experts
1
Points
250
Comments
5

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Answers

 

by: jimmackPosted on 2007-09-05 at 15:59:47ID: 19836407

You'll need to get the data from each cell (using the getValue method) and store it in your record store.  When you read it back out to re-populate the table (using the setValue method), you just need to make sure you're reading out in the same order.

Can you post the code you've written so far and explain where you are having problems?

 

by: dx100Posted on 2007-09-08 at 05:42:36ID: 19853193

ok so if i made a method to call a function called LoadCells where i have various getValue methods, where would i call this in the program because I'm having problems loading data into textboxes when the program opens now.

So i can run my method LoadCurrentState inside the page I want to load cell data but if i try to run this method under public void startApp() i just get errors. e.g -

personalNameCall = new String (myStore.getRecord(1));
personalName.setString(personalNameCall);

only works if i am instide the page with the personalName textbox, if i try going ot the main menu and cannot see these boxes, they dont load?!

 

by: dx100Posted on 2007-09-08 at 06:39:42ID: 19853292

ok i've fixed that problem they are all calling properly,

so saving a cell field, if i do simpleTableModel2.setValue( ) what do i put in as the cell identifier?

 

by: jimmackPosted on 2007-09-08 at 06:54:53ID: 19853326

If you are saving the contents of the table like this:

for (int i = 0; i < numberOfRows; i++)
{
    for (int j = 0; j < numberOfColumns; j++)
    {
        String val = simpleTableModel2.getValue(i, j);
        // Save val to record store
    }
}

then to load the table again, you should just need to do:

for (int i = 0; i < numberOfRows; i++)
{
    for (int j = 0; j < numberOfColumns; j++)
    {
        // Read val from record store
        simpleTableModel2.setValue(i, j, val);
    }
}

That way, you write and read all the values in the correct order.  Note that this assumes that the number of rows and columns will always be the same :-)

20120131-EE-VQP-002

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