Sun. Dec 22nd, 2024

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout
    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"
    tools:context=".MainActivity">
    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        >


        <Button
            android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Button"
            tools:layout_editor_absoluteX="20dp"
            tools:layout_editor_absoluteY="16dp"
            tools:ignore="MissingConstraints" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>

MainActivity.java

package com.androidian.networkchecking;

import androidx.appcompat.app.AppCompatActivity;
import androidx.databinding.DataBindingUtil;

import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

import com.androidian.networkchecking.databinding.ActivityMainBinding;

public class MainActivity extends AppCompatActivity {

    ActivityMainBinding binding;

    ConnectionDetector connectionDetector;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding= DataBindingUtil.setContentView(
                MainActivity.this,R.layout.activity_main);

        connectionDetector=new ConnectionDetector();

        binding.button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if(connectionDetector.isConnect(MainActivity.this)){
                    Toast.makeText(MainActivity.this, "Net is there", Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(MainActivity.this, "No Net", Toast.LENGTH_SHORT).show();
                }

            }
        });
    }
}

ConnectionDetector.java

package com.androidian.networkchecking;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class ConnectionDetector {
    public boolean isConnect(Context context){

        ConnectivityManager connectivityManager=
                (ConnectivityManager)
                        context.getSystemService(Context.CONNECTIVITY_SERVICE);

        if(connectivityManager!=null){
            NetworkInfo[] infos=connectivityManager.getAllNetworkInfo();
            if(infos!=null)
                for(int i=0;i<infos.length;i++)
                    if(infos[i].getState()==NetworkInfo.State.CONNECTED){
                        return true;
                    }
        }
        return false;
    }
}


AndoidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.Networkchecking"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

By Rajashekar

I’m (Rajashekar) a core Android developer with complimenting skills as a web developer from India. I cherish taking up complex problems and turning them into beautiful interfaces. My love for decrypting the logic and structure of coding keeps me pushing towards writing elegant and proficient code, whether it is Android, PHP, Flutter or any other platforms. You would find me involved in cuisines, reading, travelling during my leisure hours.

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