Android - Simple Search List View

Islifer · 2025-02-26T16:48:36+0000

Operating System

Android

In this tutorial we will try to create a Simple Search List View using Android. This code can search any word through entering the keyword. Android is the world’s most widely used operating system with over a millions of user, that are already installed to smartphones, tablets, and even television. Android is an open source so that developer find it easy to develop and expand new features. So let's do the coding...

Getting Started:

First you will have to download & install the Android Development IDE (Android Studio or Eclipse). Android Studio is an open source development feel free to develop your things.

Here's the link for the Android Studio https://developer.android.com/studio/index.html.

Layout Design

We will now create the design for the application, first locate the layout file called activity_main.xml, this is the default name when create a new activity. Then write these codes inside your layout file.

<?

xml version=

"1.0"

encoding=

"utf-8"

?>
<

RelativeLayout xmlns:

android=

"http://schemas.android.com/apk/res/android"
xmlns:

app=

"http://schemas.android.com/apk/res-auto"
xmlns:

tools=

"http://schemas.android.com/tools"
android:

layout_width=

"match_parent"
android:

layout_height=

"match_parent"
tools:

context=

"com.razormist.simplesearchlistview.MainActivity"

>
<

EditText
android:

id=

"@+id/et_search"
android:

layout_width=

"wrap_content"
android:

layout_marginTop=

"10dp"
android:

layout_alignParentTop=

"true"
android:

layout_marginLeft=

"5dp"
android:

ems=

"10"
android:

layout_height=

"wrap_content"
android:

hint=

"Search here..."

/>
<

ListView
android:

id=

"@+id/lv_content"
android:

layout_height=

"wrap_content"
android:

layout_width=

"wrap_content"
android:

layout_below=

"@+id/et_search"

/>
</

RelativeLayout>

After that we will create a layout that will display all the list. To do that right click on the layout select New then select resource file, and name it as list_content.xml. Write this certain xml code inside the newly created resource file.

<?

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/tv_list"
android:

layout_height=

"wrap_content"
android:

layout_width=

"wrap_content"
android:

padding=

"10dp"
/>
</

LinearLayout>

Android Manifest File

The Android Manifest file provides essential information about your app to the Android system in which the system must required before running the code. It describe the overall information about the application. It contains some libraries that needed to access the several method within the app.

<?

xml version=

"1.0"

encoding=

"utf-8"

?>
<

manifest xmlns:

android=

"http://schemas.android.com/apk/res/android"
package

=

"com.razormist.simplesearchlistview"

>
<

application
android:

allowBackup=

"true"
android:

icon=

"@mipmap/ic_launcher"
android:

label=

"@string/app_name"
android:

roundIcon=

"@mipmap/ic_launcher_round"
android:

supportsRtl=

"true"
android:

theme=

"@Style/AppTheme"

>
<

activity android:

name=

".MainActivity"
android:

configChanges=

"orientation"
android:

screenOrientation=

"portrait"

>
<

intent-

filter>
<

action android:

name=

"android.intent.action.MAIN"

/>
<

category android:

name=

"android.intent.category.LAUNCHER"

/>
</

intent-

filter>
</

activity>
</

application>
</

manifest>

The Main Function

This code contains the main function of the application. This code will automatically filter the list every time the keyword is entered. To start with first locate your MainActivity java file and open it, then write this variable inside the MainActivity class.

String

[

]

items;
ArrayList<

String>

arrayList;
ArrayAdapter<

String>

arrayAdapter;
ListView

lv_content;
EditText et_search;

Then write these method to make to code work correctly.

public

void

SearchResult

(

String

keyword)

{
for

(

String

item:

items)

{
if

(

!

item.contains

(

keyword)

)

{
arrayList.remove

(

item)

;
}
}
arrayAdapter.notifyDataSetChanged

(

)

;
}
public

void

IntializeList(

)

{
items =

new

String

[

]

{
"C"

,
"C++"

,
"C#"

,
"Java"

,
"VB"

,
"Python"

,
"Perl"

,
"PHP"

,
"Ruby"

,
"Delphi"
}

;
arrayList =

new

ArrayList<>

(

Arrays

.asList

(

items)

)

;
arrayAdapter =

new

ArrayAdapter<

String>

(

this

, R.layout

.list_content

, R.id

.tv_list

, arrayList)

;
arrayAdapter.sort

(

new

Comparator<

String>

(

)

{
@Override
public

int

compare(

String

lhs, String

rhs)

{
return

lhs.compareTo

(

rhs)

;
}
}

)

;
lv_content.setAdapter

(

arrayAdapter)

;
}

Finally, initialize the require methods inside the onCreate method to run the application.

lv_content =

(

ListView

)

findViewById(

R.id

.lv_content

)

;
et_search =

(

EditText)

findViewById(

R.id

.et_search

)

;
IntializeList(

)

;
et_search.addTextChangedListener

(

new

TextWatcher(

)

{
@Override
public

void

beforeTextChanged(

CharSequence s, int

start, int

count, int

after)

{
}
@Override
public

void

onTextChanged(

CharSequence s, int

start, int

before, int

count)

{
if

(

s.toString

(

)

.equals

(

""

)

)

{
IntializeList(

)

;
}

else

{
IntializeList(

)

;
SearchResult

(

s.toString

(

)

)

;
}
}
@Override
public

void

afterTextChanged(

Editable s)

{
}
}

)

;
<

java>
Try

to run the app and see if

it worked.
There

you have it we have created a <

strong>

Simple Search List

View</

strong>

using Android. I

hope that this

tutorial help you to what you are looking for

. For

more updates and tutorials just kindly visit this

site. Enjoy

Coding!!!

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