Check internet connectivity in Android

Write a class which check internet connectivity in android mobile

ConncetionDetector.class

public class ConnectionDetector {

private Context _context;

public ConnectionDetector(Context context){

this._context = context;

}

public boolean isConnectingToInternet(){

ConnectivityManager connectivity = (ConnectivityManager) _context.getSystemService(Context.CONNECTIVITY_SERVICE);

 if (connectivity != null) 

 {

 NetworkInfo[] info = connectivity.getAllNetworkInfo();

 if (info != null) 

 for (int i = 0; i < info.length; i++) 

 if (info[i].getState() == NetworkInfo.State.CONNECTED)

 {

 return true;

 }

 }

 return false;

}

}

Activity:

public class MainActivity extends ActionBarActivity {

ConnectionDetector cd;

public static boolean isInternetPresent = false;

TextView info;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

cd=new ConnectionDetector(getBaseContext());

isInternetPresent = cd.isConnectingToInternet();

Button click=(Button)findViewById(R.id.button1);

click.setOnClickListener(new  OnClickListener() {

@Override

public void onClick(View v) {

info=(TextView)findViewById(R.id.textView1);

if(isInternetPresent){

info.setText("Connected to internet");

}else{

info.setText("No internet connection");

}

}

});

}

}

Xml:

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

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

    android:id="@+id/container"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="com.sachinsandbhor.internetconnectiondemo.MainActivity"

    tools:ignore="MergeRootFrame" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"/>

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_above="@+id/textView1"

        android:layout_centerHorizontal="true"

        android:layout_marginBottom="80dp"

        android:text="Check Internet Connection" />

</RelativeLayout>

Add these two lines in AndroidManifest

<uses-permission android:name="android.permission.INTERNET"/>

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

ScreenShots:

 Here is the sample Code