1. Updated ApiServices class.

2. Added Wifi and Mobile connection check in internet.
3. Added UiUtils class.
4. Added Utils class.
5. Added Phone read state permission.

Author: amitjangid80

.idea/caches/build_file_checksums.ser

@@ -20,6 +20,7 @@ android {
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support:design:27.1.1'
 }

.idea/misc.xml

@@ -2,6 +2,7 @@
     package="com.amit">
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

app/build.gradle

@@ -62,35 +62,35 @@ public String getDeviceName()
 
         if (model.startsWith(manufacturer))
         {
-            return capitalize(model);
+            return capitalizeString(model);
         }
         else
         {
-            return capitalize(manufacturer + " " + model);
+            return capitalizeString(manufacturer + " " + model);
         }
     }
 
     /**
-     * capitalize method
+     * capitalizeString method
      *
-     * this method will capitalize or set the string to upper case
+     * this method will capitalizeString or set the string to upper case
     **/
-    private String capitalize(String s)
+    private String capitalizeString(String string)
     {
-        if (s == null || s.length() == 0)
+        if (string == null || string.length() == 0)
         {
             return "";
         }
 
-        char first = s.charAt(0);
+        char first = string.charAt(0);
 
         if (Character.isUpperCase(first))
         {
-            return s;
+            return string;
         }
         else
         {
-            return Character.toUpperCase(first) + s.substring(1);
+            return Character.toUpperCase(first) + string.substring(1);
         }
     }
 
@@ -131,7 +131,7 @@ private String capitalize(String s)
      * @return String which contains result from API.
      *
      ************************************************************************************************
-     * */
+    **/
     public String makeAPICall(final String apiName, final String requestMethod,
                               final boolean parameters, final JSONObject values,
                               final boolean hasToken)
@@ -224,7 +224,7 @@ public String makeAPICall(final String apiName, final String requestMethod,
      * @param requestType - request type will be GET OR POST
      * @param parameter - if any information has to be sent in body then set parameters
      *                    use json object for this parameter.
-     **/
+    **/
     public Pair<Integer, Bitmap> getBitmapData(String url, String requestType, String parameter)
     {
         Bitmap resultVal = null;

app/src/main/AndroidManifest.xml

@@ -0,0 +1,108 @@
+package com.amit.utilities;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.support.annotation.CheckResult;
+import android.util.Log;
+
+import static android.content.Context.CONNECTIVITY_SERVICE;
+
+/**
+ * Created By AMIT JANGID
+ * 2018 April 17 - Tuesday - 12:50 PM
+**/
+public class Internet
+{
+    private static final String TAG = Internet.class.getSimpleName();
+
+    /**
+     * isInternetConnected
+     * this method will check for connectivity service
+     *
+     * @param context - context of the application
+     * @return - returns true or false.
+    **/
+    @CheckResult
+    public static boolean isInternetConnected(Context context)
+    {
+        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(CONNECTIVITY_SERVICE);
+
+        if (connectivityManager != null)
+        {
+            NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
+            return activeNetworkInfo != null && activeNetworkInfo.isConnected();
+        }
+        else
+        {
+            return false;
+        }
+    }
+
+    /**
+     * isMobileNetConnected
+     * this method helps to find out whether the user is connected to mobile internet or not
+     *
+     * @param context - context of the application
+     * @return this returns true or false
+     *         true if connected or connecting
+     *         false if not connected.
+    **/
+    @CheckResult
+    public static boolean isMobileNetConnected(Context context)
+    {
+        try
+        {
+            ConnectivityManager manager = (ConnectivityManager) context.getSystemService(CONNECTIVITY_SERVICE);
+
+            if (manager != null)
+            {
+                return manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();
+            }
+            else
+            {
+                Log.e(TAG, "isMobileInternetAvailable: connectivity manager was null.");
+                return false;
+            }
+        }
+        catch (Exception e)
+        {
+            Log.e(TAG, "isMobileInternetAvailable: exception while checking for mobile internet.");
+            return false;
+        }
+    }
+
+    /**
+     * isWifiConnected
+     * this method will check if the device is connected to a wifi
+     *
+     * @param context - context of the application
+     * @return - this returns true or false
+     *           true if connected
+     *           false if not connected
+    **/
+    @CheckResult
+    public static boolean isWifiConnected(Context context)
+    {
+        try
+        {
+            ConnectivityManager manager = (ConnectivityManager) context.getSystemService(CONNECTIVITY_SERVICE);
+
+            if (manager != null)
+            {
+                return manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
+            }
+            else
+            {
+                Log.e(TAG, "isWifiConnected: connectivity manager is null.");
+                return false;
+            }
+        }
+        catch (Exception e)
+        {
+            Log.e(TAG, "isWifiConnected: exception while checking for wifi connection.");
+            e.printStackTrace();
+            return false;
+        }
+    }
+}