Android: How To Refresh A Tablelayout After Removing A Row?

I have a tablelayout that retrieves data from a *.txt file. For every line of data in the txt file, there will be one row of data. Let's say I have two rows of data in the txt file

Solution 1:

Not sure if you are still looking for answer. But I came across this post facing kinda the same problem. Plus the fact that I was forced to use TableLayout (the amount of code written using TableLayout is huge and it wasn't my call to switch to ListView). What I ended up doing was to remove all the views from TableLayout using:

`tableLayout.removeAllViews();`

But that's not gonna work if the number of rows after removal changes drastically. I needed to invalidate my view too, using a handler. Here is the rest of my code.

protectedstatic final int REFRESH = 0;

privateHandler _hRedraw;
publicvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.tree_view_activity);

    _hRedraw=newHandler(){
        @OverridepublicvoidhandleMessage(Message msg)
        {
            switch (msg.what) {
            caseREFRESH:
                redrawEverything();
                break;
            }
        }
    };
    ...
}
privatevoidredrawEverything()
{
    tableLayout.invalidate();
    tableLayout.refreshDrawableState();
}

There is only one part left and that's the part where you send a message to your handler to refresh your view. Here is the code for it:

_hRedraw.sendEmptyMessage(REFRESH);

Solution 2:

Why not use a ListView instead? It gives you better control when using an MVC model where there's a dataset tied to a View. So you could have a class that extends BaseAdapter. This class binds your data to the View and this class also has a method: notifyDataSetChanged() which is what should solve your problem.

You may find notifyDataSetChanged example and customListView helpful.

Let me know if you need any help further.

Solution 3:

Generally in onCreate() we do all the stuff that shows the ui with text, try to put the code that makes up UI in a private method say setUpTabView() and try to call this from onCreate and even try calling this setUpTabView() when ever the text changed. This kind of approach i did in grid view. worked very well...!