how to display text message in app when device is Network is off and On

Question

public class MainActivity extends ActionBarActivity {
    TextView connectionchecktextbox;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        connectionchecktextbox = (TextView) findViewById(R.id.connectionchecktextbox);

        if (Utils.isNetworkAvailable(MainActivity.this)) {

            connectionchecktextbox.setVisibility(View.GONE);
        }

        else {

            connectionchecktextbox
                    .setText("It Seems Internet Connection if off");
        }

    }

}


<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.popupdisplay.MainActivity$PlaceholderFragment" >

    <TextView
        android:id="@+id/connectionchecktextbox"
        android:layout_width="fill_parent"
        android:layout_height="25dip"
        android:layout_alignParentBottom="true"
        android:background="#F40C0C"
        android:gravity="center"
        android:text="It Seems Internert Connection if off"
        android:textAlignment="gravity"
        android:textColor="#ffffff" />

</RelativeLayout>

here is Xml

Using this code i am able to display Text message when device is Internet off and On but it display when we open app : means we have to call always on create to show this i want automatic text message should display when app is On then text message should disappear and when off then automatic that text message should appear please tell me how i to apply this

Automatic?? BTW why do you want to check whether connection is available or not when your application is not on the foreground? Please add more clarity to your question. — Aniruddha, Sep 30 '14 at 03:59
Like as i Internet off then it should come popup in Our app it should not restart and then check in On Pause it should display — Departure, Sep 30 '14 at 04:06

score 1 · Accepted Answer · answered Apr 13 '15 at 05:16

public class NetworkReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    // TODO Auto-generated method stub

    boolean isConnected = activeNetwork != null
            && activeNetwork.isConnectedOrConnecting();

    if (isConnected == true) {

        // initChatHub();
        Toast.makeText(context, "Connected", 1000).show();


    } else {
        Toast.makeText(context, "Disconnected", 1000).show();
    }
}

Try this simple code and enjoy if any Query please inform me.

score 0 · Answer 2 · answered Sep 30 '14 at 04:00

0

I think you should use Toast for that.

Heres how to use it.

Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;

Toast toast = Toast.makeText(context, text, duration);
toast.show();

answered Sep 30 '14 at 04:00

Shashank Chavan

131
11

check this out : http://stackoverflow.com/questions/1560788/how-to-check-internet-access-on-android-inetaddress-never-timeouts do google.. – Shashank Chavan Sep 30 '14 at 04:08
that i did it working But suppose our Internet off now i have On Internet then the popup is not disappear we have to again close app then restart it – Departure Sep 30 '14 at 04:11

score 0 · Answer 3 · answered Sep 30 '14 at 04:12

You can use a BroadcastReceiver to do this. The broadcast receiver inform's you about any connectivity changes:

public class InternetBroadcastReceiver extends BroadcastReceiver 
 public static boolean iAmOnline = false;
{
@Override
public void onReceive(Context context, Intent intent) {

    if (isOnline(context)) 
            {
          iAmOnline = true;
         Toast.makeText(context, "Network Available Do operations",Toast.LENGTH_LONG).show(); 
}else{
        iAmOnline = false;
}


}
public boolean isOnline(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = cm.getActiveNetworkInfo();
//should check null because in air plan mode it will be null
        if (netInfo != null && netInfo.isConnected()) {
            return true;
        }
        return false;
    }
}
}

And register InternetBroadcastReceiver in your manifest file:

<receiver android:name=".InternetBroadcastReceiver" >
    <intent-filter>
        <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
    </intent-filter>
</receiver>

In any place in your app you can now check the internet connection using InternetBroadcastRectiver.iAmOnline. :

i mean how to call this function so that this function should call — Departure, Sep 30 '14 at 04:13
@Departure it's fairly easy. just use a static boolean variable to check for internet connection . I will edit my answer — Illegal Argument, Sep 30 '14 at 04:14
@Departure for that you can use an interface from my class above to your activity class and if the internet connection is changed just show the text — Illegal Argument, Sep 30 '14 at 04:30

how to display text message in app when device is Network is off and On

3 Answers3