Skip a row in list view

Question

I guess getView() is called for each item of the list, but my question is, Can we not show the row if data associated with that row is null. I want to do this inside getView () only.

For Example:

If the alerts for a person whose name is to be shown in list view are null.I don't want to display that person's name in list view.

why dont You filter the person before sending it to listview? — Shahzad Imam, Jun 17 '12 at 11:14
Yea i have done that..but I want to know is there a way we can do this inside getView()..? — Rookie, Jun 17 '12 at 11:15
you can not. You have to filter values before you submit your adapter to the listview — Blackbelt, Jun 17 '12 at 11:17
@Raghav: U got the answer juss show wat will be the last line of code? — Shahzad Imam, Jun 17 '12 at 11:32

Tim · Accepted Answer · 2012-06-17T15:56:59.987

25

You can set the visibility of that row to "gone" in the last line before returning the View - that should work for you.

Edit: Be sure to set visibility to visible if the content is not null - otherwise all the views will become "gone" as the ListView reuses views.

myView.setVisibility((myData == null) ? View.GONE : View.VISIBLE);

edited Jun 17 '12 at 15:56

answered Jun 17 '12 at 11:12

Tim

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I dont think so.coz each row in list view has same id so it will set the visibility of all above rows to gone. – Rookie Jun 17 '12 at 11:14
1

That's not correct - you just have to check for each row if the content is null or not and set the visibility to visible or gone. – Tim Jun 17 '12 at 11:16
You're welcome :) We're using that in our own projects, too :) – Tim Jun 17 '12 at 11:21
Can You tell me ...what is notifyDataSetChanged() for..?Willl it be applicable here.? – Rookie Jun 17 '12 at 11:23
notifyDataSetChanged() is used for telling the adapter that the views should be renewed (per example if the data in the adapter dynamically changes). – Tim Jun 17 '12 at 11:24
@TimMesserschmidt :Please share what will be the last line of code? – Shahzad Imam Jun 17 '12 at 11:30
if((list.get(position).get("alerts")).isEmpty()){ holder.txtFirst.setVisibility(View.GONE); } else holder.txtFirst.setText(map.get("firstName").toString() +"_____"+ map.get("lastName").toString()); – Rookie Jun 17 '12 at 11:34
I've added a possible last line before returning the View. – Tim Jun 17 '12 at 11:37
@TimMesserschmidt :The that row will become invisible or some other items will show? – Shahzad Imam Jun 17 '12 at 11:38
Your code would only set the TextView's visibility to gone - my code would set the parent's View's visibility to gone. Furthermore I'd avoid checking for isEmpty() and I'd do it myself via == null || .equals(""); – Tim Jun 17 '12 at 11:41
Hey can u givee me an exmaple showing the working of notifyDataSetChanged()..? – Rookie Jun 17 '12 at 12:14
Check this topic at Stackoverflow: http://stackoverflow.com/questions/3669325/notifydatasetchanged-example/5092426#5092426 – Tim Jun 17 '12 at 12:24
i think this is not the best solution for this purpose. just try to set your specific condition and increase your position number in getView. – Setmax Nov 04 '15 at 10:43
7

Tried this solution. It creates blank places in the list – Shivaraj Patil Feb 05 '16 at 14:13

score 1 · Answer 2 · answered Jul 30 '16 at 21:43

Hi Pals I tried setting the visibility to invisible but still i can see an empty row in a listview so i change a little bit and it worked according to my need so it worth sharing if someone needs similar result like mine.

I am using List as source my requirement was to skip few applications so what i did was i removed that application from the List and notified Data set change

public AppListAdapter(Context context, List<ApplicationInfo> appList) {
        this.context = context;
        this.appList = appList;
        inflater = LayoutInflater.from(context);
        localStorage = new LocalStorage(context);
        pm = context.getPackageManager();
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null)
              convertView = inflater.inflate(R.layout.applist_item, parent, false);
            // Other lines of code
        if(appName.length()==0 || getItem(position).packageName.equals("package.name.to.skip")) {
              appList.remove(position);
              notifyDataSetChanged();
        }
    return convertView;
}

Lines of Concern

appList.remove(position);
notifyDataSetChanged();

Your suggestions and corrections are always welcome.
AzmatHunzai

Skip a row in list view

2 Answers2