MainActivity.java Source code

Introduction

Here is the source code for MainActivity.java

Source

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    private boolean isOnline() {
        ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(
                Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
        return (networkInfo != null && networkInfo.isConnected());
    }

    public void checkStatus(View view) {
        TextView textView = (TextView) findViewById(R.id.textView);
        if (isOnline()) {
            ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(
                    Context.CONNECTIVITY_SERVICE);
            NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
            textView.setText(networkInfo.getTypeName());
        } else {
            textView.setText("Offline");
        }
    }

}