SearchView In ListView having a custom Adapter

Question

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 1

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;     } }