android - How To Add Search Functionality in ListView

Question

how do i add Search Functionality in my android app? i have a listview in which i want to add search functionality , i have the code but i dont know how do i integrate it properly with my app here is the code -

inputSearch.addTextChangedListener(new TextWatcher() {

@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
    // When user changed the Text
    MainActivity.this.adapter.getFilter().filter(cs);   
}

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

}

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

and here is my java file

package com.Example.app;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {

private ListView list1;

private String array[] = { "Iphone", "Tutorials", "Gallery", "Android",

"item 1", "item 2", "item3", "item 4", "item 1", "item 2", "item3", "item 4","item 1",        "item 2", "item3", "item 4"};


   @Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

list1 = (ListView) findViewById(R.id.ListView01);

// By using setAdpater method in listview we an add string array in

// list.

list1.setAdapter(new ArrayAdapter(this,

android.R.layout.simple_list_item_1, array));

list1.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView<?> parent, View view,
        int position, long id) {
     if (position == 1)
    {
      Intent myIntent = new Intent(getApplicationContext(),Baba.class);
      startActivity(myIntent);
    }
  }
});
}

}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:stackFromBottom="true">
<EditText 
android:id="@+id/inputSearch"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:hint="Search"
android:inputType="textVisiblePassword">
</EditText>
<ListView
    android:id="@+id/ListView01"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:scrollbarSize="5dp" 

    >

</ListView>

</LinearLayout>

Answer 1

Try the below

EditText inputSearch; 
ArrayAdapter<String> adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
inputSearch = (EditText) findViewById(R.id.inputSearch); // initialize edittext 
list1 = (ListView) findViewById(R.id.ListView01);
adapter =new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, array));
list1.setAdapter(adapter);
inputSearch.addTextChangedListener(new TextWatcher() {

@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
    // When user changed the Text
    MainActivity.this.adapter.getFilter().filter(cs);   
}

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

}

 @Override
public void afterTextChanged(Editable arg0) {
    // TODO Auto-generated method stub                          
}
});
list1.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
        int position, long id) {
     if (position == 1)
    {
      Intent myIntent = new Intent(getApplicationContext(),Baba.class);
      startActivity(myIntent);
    }
  }
});
}

Initialize editText inputSearch in onCreate.

inputSearch = (EditText) findViewById(R.id.inputSearch); // initialize edittext 

Initialize adapter

adapter =new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, array));

Set the adapter op listview

list1.setAdapter(adapter);

This is where the search happens

 @Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
    // When user changed the Text
    MainActivity.this.adapter.getFilter().filter(cs);   // filter based on input
}