Tutorial 13 - No Internet PopupBox

 

This is Sample Project Which you can improve UI design & Coding skills .

1) First you need layout resource file.(alert_dialog.xml)

2)I'm create method in LoginActivity.

alert_dialog

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@drawable/bg_round"
    android:gravity="center"
    android:orientation="vertical"
    android:padding="20dp">


    <com.airbnb.lottie.LottieAnimationView
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:id="@+id/lottie"
        app:lottie_autoPlay="true"
        app:lottie_rawRes="@raw/nointernet"
        app:lottie_repeatCount="1000"
        app:lottie_repeatMode="restart"
        android:layout_marginTop="20dp"
        android:elevation="2dp"
        android:scaleType="centerCrop"  />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/baloo"
        android:text="OOps!"
        android:textAppearance="@style/TextAppearance.AppCompat.Large"
        android:textColor="@color/blacks"
        android:textStyle="bold"

        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:gravity="center_horizontal"
        android:text="No Internet Connection found. \n Check yor connection."
        android:textAlignment="center"
        android:textStyle="bold"
        android:fontFamily="@font/brandon_grotesque_black"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        android:textColor="@color/blacks" />

    <Button
        android:id="@+id/bt_try_again"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="30dp"
        android:background="@drawable/button_style"
        android:text="Try Again"
        android:textAllCaps="false"
        android:textColor="@color/white"
        android:textStyle="bold" />


</LinearLayout>

bg_round drawable file

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

    <solid android:color="@color/white"/>
    <stroke android:width="1dp" android:color="@color/coloryellow" />
    <corners android:radius="30dp"
        />

</shape>

LoginActivity

private void checkInternetAvailable() {

        ////////////Initialize ConnectionManager/////////////////
        ConnectivityManager connectivityManager = (ConnectivityManager)
                getApplicationContext().getSystemService(Context.
                        CONNECTIVITY_SERVICE);

        //////////Get active network info////////////////////////
        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();

        ////////////////check network status////////////////////
        if (networkInfo == null || !networkInfo.isConnected() || 
                !networkInfo.isAvailable()) {
///////////when internet is  inactive/////////////////


            /////////initialize dialog//////////////////////////////
            Dialog dialog = new Dialog(this);
            ////////set Content View///////////////////////////
            dialog.setContentView(R.layout.alert_dialog);
            ///set outside touch////////
            dialog.setCanceledOnTouchOutside(false);
            /////set dialog width and height///////////
            dialog.getWindow().setLayout(WindowManager.LayoutParams.WRAP_CONTENT,
                    WindowManager.LayoutParams.WRAP_CONTENT);

            //////////////set transparent Background///////////////
            dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
            //////set animation
            dialog.getWindow().getAttributes().windowAnimations =
                    android.R.style.Animation_Dialog;

            /////////Initialize dialog variable
            Button btTryAgain = dialog.findViewById(R.id.bt_try_again);
            //////Perform onClick listner
            btTryAgain.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //////call method
                    recreate();
                }
            });

            //show dialog
            dialog.show();

        }

    }

Then you can call this method in login button,formload,forgotpass button etc.