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 right now, it makes sense that two tablerows will be generated.

Then, I added a OnLongPressListener which, when called, will delete one row of data from the txt file.

Now's the first question: After deleting data in the txt file, how do I refresh my tablelayout to reflect that change?

Second question is: After I get my first question solved, is it possible to have some kind of animation where one row will fade out or slide out instead of just disappearing outrigh开发者_运维百科t?

Thanks!

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.

protected static final int REFRESH = 0;

private Handler _hRedraw;
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.tree_view_activity);

    _hRedraw=new Handler(){
        @Override
        public void handleMessage(Message msg)
        {
            switch (msg.what) {
            case REFRESH:
                redrawEverything();
                break;
            }
        }
    };
    ...
}
private void redrawEverything()
{
    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);

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.

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...!