CODEWITHSUNDEEP
androidlistviewtextview
user6038900
user6038900

Reputation:

Textview within listview with custom adapter is not getting updated

I have got a listview with a custom adapter.

Following is my getView method

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        view = convertView;

        if (convertView == null) {
            //inflate the view for each row of listview
            view = layoutInflater.inflate(R.layout.rating_item, null);
            mViewHolder = new ViewHolder();
            mViewHolder.mstatus = (TextView) view.findViewById(R.id.ratingStatus);
            mViewHolder.mCheckBox = (CheckBox) view.findViewById(R.id.checkBox);
            view.setTag(mViewHolder);
        } else {
            mViewHolder = (ViewHolder) view.getTag();
        }

       mViewHolder.mstatus.setText("Status");
        return view;
    }

Then Im trying to update the texview mStatus in my code as follows,

RatingAdapter ratingAdapter = new RatingAdapter(getActivity(), starOneList);
TextView status = (TextView) getViewByPosition(0, mListView).findViewById(R.id.ratingStatus);
 status.setText("New Status");
 mListView.setAdapter(ratingAdapter);
 Toast.makeText(getActivity(), "Log" +
 status.getText().toString(), Toast.LENGTH_SHORT).show();
  ratingAdapter.notifyDataSetChanged();

The problem is the the texview is being set but in ui the change is not visible. I mean, the toast message that I get is "New Status" but in ui, the change is not being effected and the textview still displays the old text Status. Why is that so?

Upvotes: 1

Views: 160

Answers (5)

Govinda P
Govinda P

Reputation: 3319

Try this.

    {
        if (convertView == null) {
            //inflate the view for each row of listview
            view = layoutInflater.inflate(R.layout.rating_item, null);  

            starOneList= HERE_GET_YOUR_LIST_ITEM USING POSITION;  

            mViewHolder = new ViewHolder();
            mViewHolder.mstatus = (TextView) view.findViewById(R.id.ratingStatus);
            mViewHolder.mCheckBox = (CheckBox) view.findViewById(R.id.checkBox);
            view.setTag(mViewHolder);
        } else {
            mViewHolder = (ViewHolder) view.getTag();
        }

        mViewHolder.mstatus.setText(starOneList.status); // this is your value that change in activity and only need to notify adapter
        return view;  
}

Then 

// if string array
starOneList[POSITION]="New Status";  
//or   if model class
starOneList.get(POSITION).setStatus("New Status")

    RatingAdapter ratingAdapter = new RatingAdapter(getActivity(), starOneList);

     mListView.setAdapter(ratingAdapter);
     Toast.makeText(getActivity(), "Log" +status.getText().toString(), Toast.LENGTH_SHORT).show();
      ratingAdapter.notifyDataSetChanged();

Upvotes: 0

Bhunnu Baba
Bhunnu Baba

Reputation: 1802

use to following code for refresh your adapter after update to adapter: 

youradapter.notifyDataSetChanged();

Upvotes: 1

user6059242
user6059242

Reputation:

You have to define like this. 

 if (convertView == null) {
                //inflate the view for each row of listview
                view = layoutInflater.inflate(R.layout.rating_item, null);
                mViewHolder = new ViewHolder();
                mViewHolder.setTag(R.id.ratingStatus, mViewHolder.findViewById(R.id.ratingStatus));
                mViewHolder.setTag(R.id.checkBox, mViewHolder.findViewById(R.id.checkBox));
                view.setTag(mViewHolder);
       } else {
                mViewHolder = (ViewHolder) view.getTag();
              }

           mViewHolder.mstatus.setText("Status");
            return view;
        }

Upvotes: 0

Sachin Gawai
Sachin Gawai

Reputation: 381

You have to pass the text which you want to update on textview each time. you are now setting textview each time statically i.e. mViewHolder.mstatus.setText("Status"); instead of this your code will be like this mViewHolder.mstatus.setText(newtext); where newtext is some variable which hold new string value

Upvotes: 2

Amit Ranjan
Amit Ranjan

Reputation: 567

set the tag in the textview in getview method ,and when you are calling in fragment then get the tag with yourTextview.getTag(),then you set the text to it

Upvotes: 0

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