SearchView In ListView having a custom Adapter
Guys I am in need of some help.I have been trying to implement a SearchView in my project.But my project contains a listview with a custom adapter attached to it..I have searched many sites but all have examples implemented using an arrayadapter..Lets say I have an Employee class and it contains name and age fields..How to I filter the employees using their Name only..
public class MainActivity extends Activity implements SearchView.OnQueryTextListener
{
SearchView mSearchView;
ListView mListView;
//String mStrings[]= {"abc","def","efg","ghi","ijk","apple","agxhsdgc","abbbcc"};
ArrayList<Employee> emp_list=null;
EmployeeAdapter emp_adapter=null;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSearchView=(SearchView) findViewById(R.id.searchView1);
mListView=(ListView) findViewById(R.id.listView1);
emp_list=new ArrayList<Employee>();
emp_list.add(new Employee("ABC", 24));
emp_list.add(new Employee("ACB", 24));
emp_list.add(new Employee("BVF", 28));
emp_list.add(new Employee("BRT", 28));
emp_list.add(new Employee("ANM", 23));
emp_adapter=new EmployeeAdapter(MainActivity.this, emp_list);
mListView.setAdapter(emp_adapter);
// mListView.setAdapter(new ArrayAdapter<String>(this,
// android.R.layout.simple_list_item_1,
// mStrings));
mListView.setTextFilterEnabled(true);
setupSearchView();
}
private void setupSearchView()
{
mSearchView.setIconifiedByDefault(false);
mSearchView.setOnQueryTextListener(this);
mSearchView.setSubmitButtonEnabled(true);
mSearchView.setQueryHint("Search Here");
}
@Override
public boolean onQueryTextChange(String newText)
{
if (TextUtils.isEmpty(newText.toString())) {
mListView.clearTextFilter();
} else {
mListView.setFilterText(newText.toString());
}
return true;
}
@Override
public boolean onQueryTextSubmit(String query)
{
return false;
}
}
and this is my adapter class that extends BaseAdapter..
public class EmployeeAdapter extends BaseAdapter {
Context ctx;
ArrayList<Employee> emp_list;
LayoutInflater linf=null;
EmployeeHolder holder=null;
public EmployeeAdapter(Context ctx, ArrayList<Employee> emp_list) {
super();
this.ctx = ctx;
this.emp_list = emp_list;
linf=(LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public class EmployeeHolder
{
TextView name;
TextView age;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return emp_list.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return emp_list.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
if(convertView==null)
{
convertView=linf.inflate(R.layout.row, parent, false);
holder=new EmployeeHolder();
holder.name=(TextView) convertView.findViewById(R.id.name);
holder.age=(TextView) convertView.findViewById(R.id.age);
convertView.setTag(holder);
}
else
{
holder=(EmployeeHolder) convertView.getTag();
}
Employee e=(Employee) getItem(position);
holder.name.setText(e.getName());
holder.age.setText(String.valueOf(e.getAge()));
return convertView;
}
}
Thanks in Advance..
Answer
Try this way,hope this will help you...
activity_main.xml
<SearchView
android:id="@+id/searchView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
</LinearLayout>
row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/txtName"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/txtAge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"/>
</LinearLayout>
MainActivity.java
public class MainActivity extends Activity implements SearchView.OnQueryTextListener
{
private SearchView mSearchView;
private ListView mListView;
private ArrayList<Employee> employeeArrayList;
private EmployeeAdapter employeeAdapter;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSearchView=(SearchView) findViewById(R.id.searchView1);
mListView=(ListView) findViewById(R.id.listView1);
employeeArrayList=new ArrayList<Employee>();
employeeArrayList.add(new Employee("ABC", 24));
employeeArrayList.add(new Employee("ACB", 24));
employeeArrayList.add(new Employee("BVF", 28));
employeeArrayList.add(new Employee("BRT", 28));
employeeArrayList.add(new Employee("ANM", 23));
employeeAdapter=new EmployeeAdapter(MainActivity.this, employeeArrayList);
mListView.setAdapter(employeeAdapter);
mListView.setTextFilterEnabled(true);
setupSearchView();
}
private void setupSearchView()
{
mSearchView.setIconifiedByDefault(false);
mSearchView.setOnQueryTextListener(this);
mSearchView.setSubmitButtonEnabled(true);
mSearchView.setQueryHint("Search Here");
}
@Override
public boolean onQueryTextChange(String newText)
{
if (TextUtils.isEmpty(newText)) {
mListView.clearTextFilter();
} else {
mListView.setFilterText(newText);
}
return true;
}
@Override
public boolean onQueryTextSubmit(String query)
{
return false;
}
}
EmployeeAdapter.java
public class EmployeeAdapter extends BaseAdapter implements Filterable {
public Context context;
public ArrayList<Employee> employeeArrayList;
public ArrayList<Employee> orig;
public EmployeeAdapter(Context context, ArrayList<Employee> employeeArrayList) {
super();
this.context = context;
this.employeeArrayList = employeeArrayList;
}
public class EmployeeHolder
{
TextView name;
TextView age;
}
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
final FilterResults oReturn = new FilterResults();
final ArrayList<Employee> results = new ArrayList<Employee>();
if (orig == null)
orig = employeeArrayList;
if (constraint != null) {
if (orig != null && orig.size() > 0) {
for (final Employee g : orig) {
if (g.getName().toLowerCase()
.contains(constraint.toString()))
results.add(g);
}
}
oReturn.values = results;
}
return oReturn;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
employeeArrayList = (ArrayList<Employee>) results.values;
notifyDataSetChanged();
}
};
}
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
}
@Override
public int getCount() {
return employeeArrayList.size();
}
@Override
public Object getItem(int position) {
return employeeArrayList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
EmployeeHolder holder;
if(convertView==null)
{
convertView=LayoutInflater.from(context).inflate(R.layout.row, parent, false);
holder=new EmployeeHolder();
holder.name=(TextView) convertView.findViewById(R.id.txtName);
holder.age=(TextView) convertView.findViewById(R.id.txtAge);
convertView.setTag(holder);
}
else
{
holder=(EmployeeHolder) convertView.getTag();
}
holder.name.setText(employeeArrayList.get(position).getName());
holder.age.setText(String.valueOf(employeeArrayList.get(position).getAge()));
return convertView;
}
}
Employee.java
public class Employee {
private String name;
private int age;
public Employee(String name,int age){
this.name = name;
this.age = age;
}
public String getName(){
return name;
}
public int getAge(){
return age;
}
}