How to build your own browser app in android studio

Enter the following codes in Main activty.java

package com.my.nebrowser;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.os.Bundle;

import android.text.TextUtils;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

private EditText url;

private Button search1;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        url = findViewById(R.id.url);

        search1 = findViewById(R.id.searchurl);

        search1.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                if(TextUtils.isEmpty(url.getText().toString()))

                {

                    Toast.makeText(MainActivity.this, "Please Enter the url you want to go", Toast.LENGTH_SHORT).show();

                }

                else

                    { final String searchurl = url.getText().toString().replaceAll("https://www.", "");

                    Intent intent = new Intent(MainActivity.this, search.class); //we have to send the view to another activity lets make another activity

                        // if anyone does not enter https://www.com then nothing will shown in the result to prevent this

                        String https = "https://www.google.com/search?q=";

                         // google for google result

                        // if anyone enter the https in his web address then it will overwrite the https to prevent this

                        // now add this https with the entered url

                    intent.putExtra("myurl", https+searchurl);// if searchurl is emty then ??

                    startActivity(intent);

                    // now lets run the app

                        // thank you for watching

                }

            }

        });

    }

}

Enter the following codes in Main.XML

<?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=".MainActivity">

   <EditText

       android:layout_width="300dp"

       android:layout_height="40dp"

       android:inputType="textUri"

       android:id="@+id/url"

       android:hint="Please Enter URL"

       android:gravity="center"

       android:background="@drawable/round"

       android:layout_centerHorizontal="true"

       android:layout_centerVertical="true"></EditText>

   <Button

       android:layout_width="wrap_content"

       android:layout_height="wrap_content"

      android:layout_below="@+id/url"

       android:id="@+id/searchurl"

      android:layout_centerHorizontal="true"

      android:text="GO"

       android:textColor="#000"

       android:background="@drawable/round"

      android:layout_marginTop="7dp"></Button>

</RelativeLayout>

Creat a new Empty activity and Enter the following codes in searchActivity.java

package com.my.nebrowser;

import androidx.appcompat.app.AppCompatActivity;

import android.app.ProgressDialog;

import android.os.Bundle;

import android.webkit.WebChromeClient;

import android.webkit.WebSettings;

import android.webkit.WebView;

import android.webkit.WebViewClient;

public class search extends AppCompatActivity {

WebView webView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_search);

        webView = findViewById(R.id.searchweb);

        String url = getIntent().getExtras().getString("myurl");

        WebSettings webSettings = webView.getSettings();

        webSettings.setJavaScriptEnabled(true);

        webView.loadUrl(url);

        webView.setWebViewClient(new WebViewClient());

        webView.setWebChromeClient(new WebChromeClient());

    }

    @Override

    public void onBackPressed()

    {

        if(webView.canGoBack())

        {

            webView.goBack();

        }

        else

        {

            super.onBackPressed();

        }

    }

}

Enter the following coades in serach.XML

<?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=".search">

    <WebView

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:padding="2dp"

        android:id="@+id/searchweb"></WebView>

</RelativeLayout>

For round Edit text create a Xml.Resource file and Enter the following codes 

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android"

    android:shape="rectangle">

    <corners android:radius="20dp"></corners>

    <stroke android:color="@color/colorAccent">

    </stroke>

    <stroke android:width="1dp"></stroke>

</shape>

For any quary please comment below

Now run the app on your Emullator........