Add Network Not found toast message.

ui/src/main/java/com/wireguard/android/repository/DataRepository.java

@@ -6,10 +6,13 @@ import android.os.Build;
 import android.provider.Settings;
 import android.provider.Settings.Secure;
 import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
 import android.widget.Toast;
-
 import com.wireguard.android.Application;
 import com.wireguard.android.R;
+import com.wireguard.android.activity.LoginActivity;
 import com.wireguard.android.activity.MainActivity;
 import com.wireguard.android.api.ApiConstants;
 import com.wireguard.android.api.network.ClientApi;
@@ -382,6 +385,7 @@ public class DataRepository {
                 .build();
         client.newCall(request).enqueue(new Callback() {
             @Override public void onFailure(final okhttp3.Call call, final IOException e) {
+                showNetworkNotAvailableMessage(e,context);
                 liveData.postValue(new byte[]{});
             }
 
@@ -458,9 +462,18 @@ public class DataRepository {
 
     private void showNetworkNotAvailableMessage(Throwable throwable , Context context){
         if( throwable instanceof UnknownHostException || throwable instanceof ConnectException){
-            Toast toast = Toast.makeText(context,context.getString(R.string.network_not_found),Toast.LENGTH_LONG);
-            toast.setGravity(Gravity.TOP | Gravity.START,90,60);
-            toast.show();
+            if(context instanceof LoginActivity) {
+                ((LoginActivity)context).runOnUiThread(new Runnable() {
+                    @Override public void run() {
+                        final LayoutInflater inflater = ((LoginActivity) context).getLayoutInflater();
+                        final View layout = inflater.inflate(R.layout.toast_layout, (ViewGroup)((LoginActivity)context).findViewById(R.id.custom_toast_container));
+                        final Toast toast = new Toast(context);
+                        toast.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL, 0, 60);
+                        toast.setView(layout);
+                        toast.show();
+                    }
+                });
+            }
         }
     }
 }

ui/src/main/res/drawable/custom_toast.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item>
+        <shape android:shape="rectangle">
+            <gradient android:endColor="@color/toast_color" android:startColor="@color/toast_color" />
+            <corners android:radius="100dp" />
+        </shape>
+    </item>
+</selector>

ui/src/main/res/layout/toast_layout.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/custom_toast_container"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="@drawable/custom_toast"
+        android:padding="8dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <TextView
+            android:id="@+id/text"
+            android:textSize="@dimen/toast_text_size"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="@dimen/margin_top"
+            android:layout_marginTop="@dimen/margin_start_and_end"
+            android:layout_marginEnd="@dimen/margin_top"
+            android:paddingBottom="10dp"
+            android:layout_marginBottom="@dimen/margin_top"
+            android:text="@string/network_not_found"
+            android:textColor="#FFF"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

ui/src/main/res/values/colors.xml

@@ -42,4 +42,5 @@
     <color name="sign_in_disable_end_color">#DF9BDF</color>
     <color name="sign_in_enable_start_color">#EC2F91</color>
     <color name="sign_in_enable_end_color">#C037C0</color>
+    <color name="toast_color">#4E4E4E</color>
 </resources>

ui/src/main/res/values/dimens.xml

@@ -16,4 +16,5 @@
     <dimen name="edit_text_height">55dp</dimen>
     <dimen name="bubble_connection_title_text_size">30sp</dimen>
     <dimen name="icons_size">90dp</dimen>
+    <dimen name="toast_text_size">14sp</dimen>
 </resources>