Adding dynamic linear layouts to a list view

Question

I am using a list view to show some data on it and using it with a custom adapter, now at an instance of time, I want to show an image view as a list item in it. For that case I have made dynamic linear layout and added the image view in it. Now I want that on some condition this image view layout should appear as the list item in the last of the list view as a new item added to the list.

Genarating layout dynamically

LinearLayout linearLayout = new LinearLayout(UserChatActivity.this);

            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                     LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

            ImageView img = new ImageView(UserChatActivity.this);
            img.setImageBitmap(BitmapFactory.decodeFile(picturePath));


            linearLayout.addView(img, layoutParams);


            mList.addView(linearLayout);

But it is giving an error named : - Views can't be added directly in the adapterViews. I know that we have to inflate views for the adapter but how to add the new view with the previous data coming in the list.???

Thanks

You can not add Linear Layout into listview because listview is not container layout. — Dipak Keshariya, Dec 06 '12 at 07:29
@DipakKeshariya I do know this thing. I am just asking what is the solution then? — Gaurav Arora, Dec 06 '12 at 07:31
if you are trying to add a view at the end of the list view, try list view footer — Abhishek Nandi, Dec 06 '12 at 07:59
notifydatasetchange method? http://stackoverflow.com/questions/1998483/listview-dynamic-add-item — Chuekup, Dec 06 '12 at 08:21

score 4 · Answer 1 · answered Dec 06 '12 at 07:30

4

I think MergeAdapter perfectly solves your problem.

answered Dec 06 '12 at 07:30

k_shil

2,108
1
20
25

Talha · Answer 2 · 2012-12-06T07:47:35.890

you can try this, put the code in to getView() in your adapter.

if (view == null) 
{
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    view = vi.inflate(R.layout.list, null);
                    **// list.xlm is your layout**
} 

**lnHolder is in list.xml**
LinearLayout lnHolder = (LinearLayout ) view.findViewById(R.id.lnHolder);

LinearLayout linearLayout = new LinearLayout(UserChatActivity.this);

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                         LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);    
ImageView img = new ImageView(UserChatActivity.this);
img.setImageBitmap(BitmapFactory.decodeFile(picturePath));   
linearLayout.addView(img, layoutParams);
 lnHolder.addView(linearLayout);

score 1 · Answer 3 · answered Dec 06 '12 at 07:45

Your getView() method will look like this,

public View getView(int position, View convertView, ViewGroup parent) {

            if (position == 10) //if you already know the position use static position
                //  else mydatalist.get(position).hasImage()== true and 
                // make one function hasImage in your data structure which checks weather its a image or text 
            {
                convertView = _inflater.inflate(R.layout.simplelinearlayout,
                        null);

                LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                        LinearLayout.LayoutParams.WRAP_CONTENT,
                        LinearLayout.LayoutParams.WRAP_CONTENT);

                ImageView img = new ImageView(UserChatActivity.this);
                img.setImageBitmap(BitmapFactory.decodeFile(picturePath));

                convertView.addView(img, layoutParams);
            } else {
                if (convertView == null) {
                    convertView = _inflater.inflate(R.layout.missingitem_row,
                            null);
                    viewHolder = new ViewHolder();
                    viewHolder.textTitle = (TextView) convertView
                            .findViewById(R.id.txtTitle);

                    convertView.setTag(viewHolder);

                } else {
                    viewHolder = (ViewHolder) convertView.getTag();
                }

                viewHolder.textTitle.setText(messageText);
            }
            return convertView;
        }

score -1 · Answer 4 · edited May 23 '17 at 12:29

-1

notifiyDataSetChange() method is used to update the adapter

listView dynamic add item

edited May 23 '17 at 12:29

Community

1
1

answered Dec 06 '12 at 08:23

Chuekup

32
2

Adding dynamic linear layouts to a list view

4 Answers4

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