How to Filter Listview Data When Typing on Edittext in Android

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

1. Add TextWatcher to EditText#addTextChangedListener
2. In onTextChanged add or remove items from your ListView's adapter. If you are subclassing ArrayAdapter it would have add and remove methods

How to filter ListView using a EditText when enter is pressed?

Instead of this:

final EditText myFilter = (EditText) findViewById(R.id.myFilter);
myFilter.addTextChangedListener(new TextWatcher() {
...
    public void onTextChanged(CharSequence s, int start,int before, int count) {
        dataAdapter.getFilter().filter(s.toString());

    }
});

Try below:

final EditText myFilter = (EditText) findViewById(R.id.myFilter);
myFilter.setImeActionLabel("Filter",1);
myFilter.setPrivateImeOptions("actionUnspecified");
myFilter.setOnEditorActionListener(new TextView.OnEditorActionListener() {
        @Override
        public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
            if (id == 1 || id == EditorInfo.IME_NULL) {
                dataAdapter.getFilter().filter(textView.getText().toString());
                return true;
            }
            return false;
        }
    });

Filter list view from edit text

My problem is solved, found out that I have to override getCount() and getItem().

EditText to filter items in listview. How to?

Try like this

I changed the adapter class

public class ApplicationAdapter extends ArrayAdapter<ApplicationInfo>  { 
    private List<ApplicationInfo> appsList = null; 
    private Context context; 
    private PackageManager packageManager;
    private List<ApplicationInfo> listOfApp;

    public ApplicationAdapter(Context context, int textViewResourceId, 
            List<ApplicationInfo> appsList) { 
        super(context, textViewResourceId, appsList); 
        this.context = context; 
        this.appsList = appsList;
        this.listOfApp = new ArrayList<ApplicationInfo>(); //Added here
        packageManager = context.getPackageManager();
        listOfApp.addAll(appsList);
    } 

    @Override
    public int getCount() { 
        return ((null != appsList) ? appsList.size() : 0); 
    } 

    @Override
    public ApplicationInfo getItem(int position) { 
        return ((null != appsList) ? appsList.get(position) : null); 
    } 

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) { 
        View view = convertView; 
        if (null == view) { 
            LayoutInflater layoutInflater = (LayoutInflater) context 
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
            view = layoutInflater.inflate(R.layout.snippet_list_row, null); 
        } 

        ApplicationInfo data = appsList.get(position); 
        if (null != data) { 
            TextView appName = (TextView) view.findViewById(R.id.app_name); 
            TextView packageName = (TextView) view.findViewById(R.id.app_paackage); 
            ImageView iconview = (ImageView) view.findViewById(R.id.app_icon); 

            appName.setText(data.loadLabel(packageManager)); 
            packageName.setText(data.packageName); 
            iconview.setImageDrawable(data.loadIcon(packageManager)); 
        } 
        return view; 
    } 

 // Filter Class
    public void filter(String charText) {
        charText = charText.toLowerCase(Locale.getDefault());
        appsList.clear();
        if (charText.length() == 0) {
            appsList.addAll(listOfApp);
        } 
        else
        {
            for (ApplicationInfo ai : listOfApp) 
            {
                if (ai.loadLabel(packageManager).toString().toLowerCase(Locale.getDefault()).contains(charText)) 
                {
                    appsList.add(ai);
                }
            }
        }
        notifyDataSetChanged();
    }

}

and change in Activity

inputSearch.addTextChangedListener(new TextWatcher() {

            public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
               // I changed here to call filter method from Adapter class.
               String text =inputSearch.getText().toString().toLowerCase(Locale.getDefault());
                listadaptor.filter(text);
            }

            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                    int arg3) {
                // TODO Auto-generated method stub

            }

            public void afterTextChanged(Editable arg0) {
                // TODO Auto-generated method stub                          
            }
        });

Hope this help you.

Filter ListView with EditText

Your list based on bean rather than beanFiltered. Thats why notifyDataSetChanged not working. getCount() and getItem(int position) always working on bean. Thats why filter not working. Please Change according below:

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

@Override
public Object getItem(int position) {
    return beanFiltered.get(position);
}

how to display listview while typing on edittext without using filter?

//imports

public class SearchActivity extends Activity implements TextWatcher{
  private EditText searchField;
  private SearchActivity activity;
  private ListView listView;

  protect void onCreate(Bundle savedInstances){
    setContentView(R.layout.yourlayout);
    activity = this;

    searchField = (EditText)findViewById(R.id.searchField);
    searchField.addTextChangedListener(this);

    listView = (ListView)findViewById(R.id.list);
    listView.setOnItemClickListener(new OnItemClickListener(){
      @Override
      public void onItemClick(Adapter<?> arg0, View arg1, int position, long arg3){
        //action when an item is clicked
      }
    });
  }  

  @Override
  public void afterTextChanged(final Editable searchField){
    listView.setAdapter(null); //refresh list items

    if(searchField.length()>0){
      //do your searches here
      listView.setAdapter(new YourCustomAdapter());
    }
  }     

  @Override
  public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}

  @Override
  public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}

}

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