resolved dependency issue and added alert instead of toast in login screen

app/build.gradle

@@ -124,6 +124,7 @@ dependencies {
     implementation ('com.google.firebase:firebase-messaging:15.0.2') {
         exclude group: 'com.google.firebase', module: 'firebase-iid'
     }
+    implementation 'com.google.firebase:firebase-core:15.0.2'
 
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
 

app/src/main/java/com/vsoft/servicenow/ui/LoginScreen.java

@@ -269,12 +269,12 @@ public class LoginScreen extends Activity {
                     }
                     finish();
                 } else {
-                    Toast.makeText(LoginScreen.this, R.string.user_detail_not_available, Toast.LENGTH_LONG).show();
+                    Util.simpleAlert(LoginScreen.this,getResources().getString(R.string.user_detail_not_available));
                 }
             } else if (syncStatus == API_FAIL_USER_LOGIN) {
-                Toast.makeText(LoginScreen.this, R.string.login_screen_invalid_username_and_password_string, Toast.LENGTH_LONG).show();
+                Util.simpleAlert(LoginScreen.this,getResources().getString(R.string.login_screen_invalid_username_and_password_string));
             } else if (syncStatus == API_FAIL_USER_DETAIL) {
-                Toast.makeText(LoginScreen.this, R.string.failed_to_fetch_user_detail_string, Toast.LENGTH_LONG).show();
+                Util.simpleAlert(LoginScreen.this,getResources().getString(R.string.failed_to_fetch_user_detail_string));
             }
         }
     }

app/src/main/java/com/vsoft/servicenow/utils/Util.java

 package com.vsoft.servicenow.utils;
 
 import android.content.Context;
+import android.content.DialogInterface;
 import android.database.sqlite.SQLiteDatabase;
 import android.graphics.Typeface;
 import android.media.AudioManager;
@@ -8,6 +9,7 @@ import android.media.MediaPlayer;
 import android.media.RingtoneManager;
 import android.net.Uri;
 import android.support.v4.content.ContextCompat;
+import android.support.v7.app.AlertDialog;
 import android.text.Html;
 import android.text.InputType;
 import android.text.Spanned;
@@ -922,6 +924,19 @@ public class Util {
         return textView;
     }
 
+    public static void simpleAlert(Context context,String msg) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(context);
+        builder.setMessage(msg)
+                .setCancelable(false)
+                .setPositiveButton(R.string.ok_string, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        dialog.dismiss();
+                    }
+                });
+        AlertDialog alert = builder.create();
+        alert.show();
+    }
+
     public static String getDefaultDate() {
         Calendar c = Calendar.getInstance();
         SimpleDateFormat df = new SimpleDateFormat("dd MMM, yyyy");

build.gradle

@@ -8,9 +8,9 @@ buildscript {
         maven { url "https://jitpack.io" }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.2'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
-        classpath 'com.google.gms:google-services:3.1.0'
+        classpath 'com.google.gms:google-services:4.2.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

-#Mon Apr 30 19:16:01 IST 2018
+#Wed Jan 09 12:34:55 IST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip