Search in Listview with Edittext

Search in ListView with EditText

follow the link

http://marakana.com/forums/android/learning_android_book/617.html

http://androidsearchfilterlistview.blogspot.in/2011/06/android-custom-list-view-filter.html

How can I filter ListView data when typing on EditText in android

How to dynamically update a ListView on Android

Android Listview Searching from edittext

You can do this in following steps.

1. Check that that word user entered is available in your listview.
2. If yes then get id or position of that word in array list or your listview respectively.
3. then set selection to retrieved id.

if you are still not able to get id then pleas post your code you are using string array custom array adapter

Sol:

In your case it could be like

this code should be in your oncreate or wherever you are initlizing your listview

HashMap<String,String> map=new HashMap<String, String>();
for(int i=0; i<arrlist.size();i++)
{
    map.put(arrlist.get(i).trim().toLowerCase(), ""+i+1);
}

to get value from hash map
this code will on your search button click

 String id= map.get("yourserchitem")
 lv.setSelection(Integer.parseInt(id)-1); 

on text changer write this code
here e is object of my editext

e.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            // TODO Auto-generated method stub

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub
            if(arr.contains(e.getText().toString().trim().toLowerCase()))
            {
                String id= map.get(e.getText().toString().trim().toLowerCase());
                lv.setSelection(Integer.parseInt(id)-1);
            }
        }
    });

change code inside afterTextChanged with

String middle_string="";
             for(int i=0;i<arr.size();i++)
                {
                    if(arr.get(i).startsWith(e.getText().toString().trim().toLowerCase()))
                    {
                        middle_string=arr.get(i);
                        break;
                    }
                }
            if(arr.contains(middle_string))
            {
                String id= map.get(middle_string);
                lv.setSelection(Integer.parseInt(id)-1);
            }

Searching in a listview using a Custom Adapter with text and images

This is what you have to do inside your adapter, you might need to do some tweaks:-

 @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                FilterResults results = new FilterResults();

                // If the constraint (search string/pattern) is null
                // or its length is 0, i.e., its empty then
                // we just set the `values` property to the
                // original contacts list which contains all of them
                if (constraint == null || constraint.length() == 0) {
                    results.values =   videoTitle;;
                    results.count = videoTitle.size();
                }
                else {
                    // Some search copnstraint has been passed
                    // so let's filter accordingly
                    ArrayList<String> filteredTitle = new ArrayList<String>();

                    // We'll go through all the title and see
                    // if they contain the supplied string
                    for (String c : string) {
                        if (string.toUpperCase().contains( constraint.toString().toUpperCase() )) {
                            // if `contains` == true then add it
                            // to our filtered list
                            filteredTitle.add(c);
                        }
                    }

                    // Finally set the filtered values and size/count
                    results.values = filteredTitle;
                    results.count = filteredTitle.size();
                }

                // Return our FilterResults object
                return results;
            }
            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {
                mList = (ArrayList<String>) results.values;
                notifyDataSetChanged();
            }
        };
    }

Hope this will help you.

Using an EditText to search through a ListView

Few Logical Mistakes : I got here this code working at my end

    public LabAdapter(Activity activity, List<LabItem> labItem){
        this.activity = activity;

        this.labItem = labItem;
    }

    @Override
    public int getCount() {
        return labItem.size();
    }

    @Override
    public LabItem getItem(int position) { //instead of Object make it Labitem
        return labItem.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup viewGroup) {
        if (inflater == null)
            inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        if (convertView == null)
            convertView = inflater.inflate(R.layout.activity_stack, null);

        labName = (TextView) convertView.findViewById(R.id.textView1);
        labCase = (TextView) convertView.findViewById(R.id.textView2);

        LabItem labs = labItem.get(position);
        labName.setText(labs.getName());
        labCase.setText(labs.getCase());
        return convertView;
    }

    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence charSequence) {
                Log.d("SEARCHTEXT2", "**** PERFORM FILTERING for: " + charSequence);
                charSequence = charSequence.toString().toLowerCase();
                FilterResults filts = new FilterResults();
                if (charSequence == null || charSequence.length() == 0){
                    filts.values = labItem;
                    filts.count = labItem.size();
                } else {
                    // We perform filtering operation
                    List<LabItem> labrs = new ArrayList<LabItem>();
                    for (LabItem l : labItem){ //you are going to search in labItem that contains the data and not the empty list labrs
                        if (l.getName().startsWith(charSequence.toString()) || l.getCase().startsWith(charSequence.toString())){
                               Log.e("(l.getName().startsWith(charSequence.toString())","" + charSequence);
                               labrs.add(l); // add to the new list** 
                        }
                    }
                    filts.values = labrs; //set values to the new list**
                    filts.count = labrs.size(); 
                    //filts.count = labItem.size();
                }
                return filts;
            }

            @Override
            protected void publishResults(CharSequence charSequence, FilterResults filterResults) {
                // Now we have to inform the adapter about the new list filtered
                Log.d("SEARCHTEXT1", "**** PUBLISHING RESULTS for: " + charSequence);
                List<LabItem> filtered = (List<LabItem>) filterResults.values;

                labItem = filtered; // set the new data as you want  with the new set you've received.**
                notifyDataSetChanged();

            }

        };
    }

public void notifyDataSetInvalidated()
{
    super.notifyDataSetInvalidated();
}

---

then in your LabDetailActivity.class change it as

searchText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
                labListAdapter.getFilter().filter(charSequence.toString());
                Log.d("NEW TAGS", "*** Search value changed: " + labListAdapter.getCount());
                list.invalidate();
                labListAdapter.notifyDataSetChanged();
                list.setAdapter(labListAdapter);

            }

Edit:

P.S. This code is still not perfect as after clearing the text it
doesn't sets the list back. I leave it to you. Hope this solves your
problem you've been facing.
Let me know if it works.

---

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