How to add Google Search Functionality in Kotlin?

Kotlin Apps/ApplicationsMobile Development

This example demonstrates how to add Google Search Functionality in Kotlin.

Step 1 − Create a new project in Android Studio, go to File ⇒New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:padding="16dp"
   tools:context=".MainActivity">
   <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerHorizontal="true"
      android:layout_marginTop="50dp"
      android:text="Tutorials Point"
      android:textAlignment="center"
      android:textColor="@android:color/holo_green_dark"
      android:textSize="32sp"
      android:textStyle="bold" />
   <ImageView
      android:layout_width="match_parent"
      android:layout_height="200dp"
      android:layout_above="@id/editText"
      android:layout_marginBottom="30dp"
      android:src="@drawable/google" />
   <EditText
      android:id="@+id/editText"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_centerInParent="true" />
   <Button
      android:id="@+id/btnSearch"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_below="@id/editText"
      android:layout_alignParentEnd="true"
      android:layout_marginTop="5dp"
      android:text="Search" />
</RelativeLayout>

Step 3 − Add the following code to MainActivity.kt

import android.app.SearchManager
import android.content.Intent
import android.os.Bundle
import android.widget.Button
import android.widget.EditText
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
   lateinit var editText: EditText
   lateinit var btnSearch: Button
   override fun onCreate(savedInstanceState: Bundle?) {
      super.onCreate(savedInstanceState)
      setContentView(R.layout.activity_main)
      title = "KotlinApp"
      editText = findViewById(R.id.editText)
      btnSearch = findViewById(R.id.btnSearch)
      btnSearch.setOnClickListener {
         val intent = Intent(Intent.ACTION_WEB_SEARCH)
         val term = editText.text.toString()
         intent.putExtra(SearchManager.QUERY, term)
         startActivity(intent)
      }
   }
}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="app.com.q36">
<uses-permission android:name="android.permission.INTERNET" />
<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">
      <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
   </application>
</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click the Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −


Click here to download the project code.

raja
Published on 21-Apr-2020 13:26:59
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