Question

I am trying to make a Button change the visibility of a single ImageButton in all of my Listview Elements. The problem i’m having is finding the right element to access, because i don’t have an easy way to access a specific element in the Custom Adapter (i think)

Relevant code parts:

 public View getView(final int position, final View convertView, final ViewGroup parent) {
    View vi=convertView;
    if(convertView==null)
    {
        vi = inflater.inflate(R.layout.custom_row_view, null);
    }

/*
 other non important view stuff
*/
if(deleteButton != null){
        deleteButton.setVisibility(View.INVISIBLE);
        deleteButton.setTag(position);
        deleteButton.setOnClickListener(deleteListener);
    }

    return vi;
}

public void setVisibility()
{
    if(deleteButton.getVisibility() == View.INVISIBLE){
        deleteButton.setVisibility(View.VISIBLE); //Here i  want to access all elements
        Log.i("setVisibility", "Changing to "+ deleteButton.getVisibility() + " element: " + deleteButton.getTag()); 
//Logcat output: Changing to 0 element: 2


    } else if(deleteButton.getVisibility() == View.VISIBLE){
        deleteButton.setVisibility(View.INVISIBLE); 
        Log.i("setVisibility", "Changing to "+ deleteButton.getVisibility() + " element: " + deleteButton.getTag());
//Logcat output: Changing to 4 element: 2

    }
}

Stuff i use in the Main Activity:

CustomAdapter listAdapter;
ListView listViewLeft;
ListView listViewRight;

OnCreate:
listAdapter=new CustomAdapter(this, link, names, names2, buttonText,context, plistArray); 
listViewLeft.setAdapter(listAdapter);
listViewRight.setAdapter(listAdapter);

I call on the method simply using:

OnClickListener editListener = new OnClickListener() {
    public void onClick(View view) {
        listAdapter.setVisibility();
       }
 }

If anyone has any ideas then i’d really appreciate it, Thanks 🙂

Answer 1

It was a really simple fix. I forgot calling:

listAdapter.notifiDataSetChanged(); 

But every time you call that method, the getView method is called, so i just added this in the custom adapter getView

if(deleteButton != null){
        if(deleteButton.getVisibility() == View.INVISIBLE){
            deleteButton.setVisibility(View.VISIBLE);
        } else if(deleteButton.getVisibility() == View.VISIBLE){
            deleteButton.setVisibility(View.INVISIBLE); 
            }
        deleteButton.setTag(position);
        deleteButton.setOnClickListener(deleteListener);
    }

And set the default in XML to visible.
I’m not sure if this is the most efficient way to do it, but it works like intended at least 🙂