Refactoring. Bugfix Transaktionen, #34, #33, #32, #30, #20

WarpDrinkApp/WarpDrink.iml

 <?xml version="1.0" encoding="UTF-8"?>
-<module external.linked.project.id="WarpDrink" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+<module external.linked.project.id="WarpPay" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
   <component name="FacetManager">
     <facet type="java-gradle" name="Java-Gradle">
       <configuration>

WarpDrinkApp/app/build.gradle

@@ -24,7 +24,10 @@ android {
         exclude 'META-INF/notice.txt'
         exclude 'META-INF/license.txt'
     }
-
+    repositories {
+        mavenCentral()
+        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
+    }
 }
 
 dependencies {
@@ -37,6 +40,7 @@ dependencies {
     compile group: 'com.squareup.retrofit' , name: 'retrofit' , version: '2.0.0-beta2'
     compile group: 'com.squareup.retrofit' , name: 'converter-gson' , version: '2.0.0-beta2'
     compile group: 'com.google.code.gson' , name: 'gson' , version: '2.7'
+    compile 'com.michaelpardo:activeandroid:3.1.0-SNAPSHOT'
     compile group: 'com.squareup.okio' , name: 'okio' , version: '1.9.0'
     compile group: 'com.squareup.okhttp', name: 'okhttp', version: '2.7.5'
     compile group: 'org.antlr', name: 'antlr4-runtime', version: '4.5.3'

WarpDrinkApp/app/src/main/AndroidManifest.xml

@@ -19,8 +19,8 @@
         android:theme="@style/AppTheme">
 
 
-        <meta-data android:name="AA_DB_NAME" android:value="warppay_2.db" />
-        <meta-data android:name="AA_DB_VERSION" android:value="11" />
+        <meta-data android:name="AA_DB_NAME" android:value="warppay_new.db" />
+        <meta-data android:name="AA_DB_VERSION" android:value="15" />
 
         <activity
             android:name="ms.warpzone.warppay.MainActivity"

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/MainActivity.java

@@ -29,6 +29,7 @@ import ms.warpzone.warppay.data.models.local.User;
 import ms.warpzone.warppay.dialogs.BarcodeLearnDialog;
 import ms.warpzone.warppay.manager.DataManager;
 import ms.warpzone.warppay.manager.MainManager;
+import ms.warpzone.warppay.manager.RefreshManager;
 import ms.warpzone.warppay.manager.UiManager;
 import ms.warpzone.warppay.orderList.Order;
 
@@ -102,13 +103,12 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
     @Override
     public void onUserInteraction(){
         if(MainManager.getInstance().getCurrentUser() != null) {
-            MainManager.getInstance().startTimer();
+            RefreshManager.getInstance().startTimer();
             //MainManager.getInstance().stopScreenSaverTimer();
         } else {
-            MainManager.getInstance().stopTimer();
+            RefreshManager.getInstance().stopTimer();
             //MainManager.getInstance().resetScreenSaverTimer();
         }
-
     }
 
     public static String byteArrayToHex(byte[] a) {
@@ -126,7 +126,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
     public boolean onMenuItemClick(MenuItem menuItem) {
         switch (menuItem.getItemId()) {
             case R.id.action_learn_card_id:
-                MainManager.getInstance().stopTimer();
+                RefreshManager.getInstance().stopTimer();
                 if (this.manager.getCurrentUser() != null){
                     new AlertDialog.Builder(this)
                             .setTitle(this.getResources().getString(R.string.confirm_learn_card))
@@ -143,7 +143,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
                 }
                 break;
             case R.id.action_learn_barcode:
-                MainManager.getInstance().stopTimer();
+                RefreshManager.getInstance().stopTimer();
                 this.barcodeLearnDialog = new BarcodeLearnDialog();
                 MainManager.getInstance().setBarcodeLearning(true);
                 this.barcodeLearnDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/data/SQLiteService.java

@@ -2,6 +2,8 @@ package ms.warpzone.warppay.data;
 
 import android.util.Log;
 
+import com.activeandroid.query.Select;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/data/models/local/Product.java

@@ -8,6 +8,7 @@ import com.activeandroid.annotation.Table;
 import com.activeandroid.query.Delete;
 import com.activeandroid.query.Select;
 
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -30,7 +31,7 @@ public class Product extends Model {
     private float position;
 
     @Column(name = "price")
-    private float price;
+    private BigDecimal price;
 
     @Column(name = "count")
     private int count;
@@ -39,7 +40,7 @@ public class Product extends Model {
         super();
     }
 
-    public Product(int pid, String name, String category, float price, int count, float position) {
+    public Product(int pid, String name, String category, BigDecimal price, int count, float position) {
         super();
         this.pid = pid;
         this.name = name;
@@ -49,7 +50,7 @@ public class Product extends Model {
         this.position = position;
     }
 
-    public static ArrayList<Product> getAllWithoutBarcode() {
+    public static List<Product> getAllWithoutBarcode() {
         return new Select()
                 .from(Product.class)
                 .where("barcode = ''")
@@ -81,11 +82,11 @@ public class Product extends Model {
         this.category = category;
     }
 
-    public float getPrice() {
+    public BigDecimal getPrice() {
         return price;
     }
 
-    public void setPrice(float price) {
+    public void setPrice(BigDecimal price) {
         this.price = price;
     }
 

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/data/models/local/User.java

@@ -6,6 +6,7 @@ import com.activeandroid.annotation.Table;
 import com.activeandroid.query.Delete;
 import com.activeandroid.query.Select;
 
+import java.math.BigDecimal;
 import java.util.List;
 
 @Table(name = "Users")
@@ -21,14 +22,14 @@ public class User extends Model {
     private String card_id;
 
     @Column(name = "credit")
-    private double credit;
+    private BigDecimal credit;
 
 
     public User() {
         super();
     }
 
-    public User(String uid, String pinCode, double credit, String card_id) {
+    public User(String uid, String pinCode, BigDecimal credit, String card_id) {
         super();
         this.uid = uid;
         this.credit = credit;
@@ -52,11 +53,11 @@ public class User extends Model {
         this.card_id = card_id;
     }
 
-    public double getCredit() {
+    public BigDecimal getCredit() {
         return credit;
     }
 
-    public void setCredit(double credit) {
+    public void setCredit(BigDecimal credit) {
         this.credit = credit;
     }
 

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/data/models/rest/RestProduct.java

 package ms.warpzone.warppay.data.models.rest;
 
+import java.math.BigDecimal;
+
 import ms.warpzone.warppay.data.models.local.Product;
 
 public class RestProduct {
@@ -9,7 +11,7 @@ public class RestProduct {
     private String name;
     private String category;
     private String barcode;
-    private Float price_vk;
+    private BigDecimal price_vk;
     private int stock_count;
     private float position;
 
@@ -17,7 +19,7 @@ public class RestProduct {
         super();
     }
 
-    public RestProduct(int id, String name, String category,String barcode, Float price_vk, int stock_count, float position) {
+    public RestProduct(int id, String name, String category,String barcode, BigDecimal price_vk, int stock_count, float position) {
         this.id = id;
         this.name = name;
         this.category = category;
@@ -51,11 +53,11 @@ public class RestProduct {
         this.category = category;
     }
 
-    public Float getPrice() {
+    public BigDecimal getPrice() {
         return price_vk;
     }
 
-    public void setPrice(Float price) {
+    public void setPrice(BigDecimal price) {
         this.price_vk = price_vk;
     }
 

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/data/models/rest/RestTransaction.java

 package ms.warpzone.warppay.data.models.rest;
 
+import java.math.BigDecimal;
+
 public class RestTransaction {
 
     private int tid;
     private int trans_type;
     private RestProduct product;
-    private double amount;
+    private BigDecimal amount;
     private boolean cash_paid;
 
     public RestTransaction() {
         super();
     }
 
-    public RestTransaction(int tid, int trans_type, RestProduct product, double amount, boolean cash_paid) {
+    public RestTransaction(int tid, int trans_type, RestProduct product, BigDecimal amount, boolean cash_paid) {
         this.tid = tid;
         this.trans_type = trans_type;
         this.product = product;
@@ -40,11 +42,11 @@ public class RestTransaction {
         this.product = product;
     }
 
-    public double getAmount() {
+    public BigDecimal getAmount() {
         return amount;
     }
 
-    public void setAmount(double amount) {
+    public void setAmount(BigDecimal amount) {
         this.amount = amount;
     }
 

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/data/models/rest/RestUser.java

 package ms.warpzone.warppay.data.models.rest;
 
+import java.math.BigDecimal;
+
 import ms.warpzone.warppay.data.models.local.User;
 
 public class RestUser {
 
 
     private String uid;
-    private double credit;
+    private BigDecimal credit;
     private String card_id;
     private String pinCode;
 
@@ -14,7 +16,7 @@ public class RestUser {
         super();
     }
 
-    public RestUser(String uid, double credit, String card_id, String pinCode) {
+    public RestUser(String uid, BigDecimal credit, String card_id, String pinCode) {
         super();
         this.uid = uid;
         this.credit = credit;
@@ -38,11 +40,11 @@ public class RestUser {
         this.card_id = card_id;
     }
 
-    public double getCredit() {
+    public BigDecimal getCredit() {
         return credit;
     }
 
-    public void setCredit(double credit) {
+    public void setCredit(BigDecimal credit) {
         this.credit = credit;
     }
 

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/dialogs/BarcodeLearnDialog.java

@@ -27,6 +27,7 @@ import ms.warpzone.warppay.data.models.rest.RestProduct;
 import ms.warpzone.warppay.data.models.rest.RestUser;
 import ms.warpzone.warppay.manager.DataManager;
 import ms.warpzone.warppay.manager.MainManager;
+import ms.warpzone.warppay.manager.RestManager;
 import ms.warpzone.warppay.manager.UiManager;
 import ms.warpzone.warppay.orderList.ListViewAdapter;
 import ms.warpzone.warppay.orderList.Order;
@@ -95,7 +96,7 @@ public class BarcodeLearnDialog extends Dialog implements View.OnClickListener,
                     this.act_product.setBarcode(this.barcode);
                     this.act_product.save();
                     RestProduct p = RestProduct.fromLocalProduct(this.act_product);
-                    MainManager.getInstance().getRestService().saveBarcode(p.getId(),p).enqueue(new Callback<Void>() {
+                    RestManager.getInstance().getRestService().saveBarcode(p.getId(),p).enqueue(new Callback<Void>() {
                         @Override
                         public void onResponse(Response<Void> response, Retrofit retrofit) {
 

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/dialogs/ChargeCustomDialog.java

@@ -10,6 +10,8 @@ import android.widget.Button;
 import android.widget.EditText;
 import android.widget.NumberPicker;
 
+import java.math.BigDecimal;
+
 import ms.warpzone.warppay.MainActivity;
 import ms.warpzone.warppay.R;
 import ms.warpzone.warppay.manager.MainManager;
@@ -63,8 +65,8 @@ public class ChargeCustomDialog extends Dialog implements
         try {
             String text = this.etxtAmount.getText().toString();
             text = text.replace(",",".");
-            double amount = Double.valueOf(text);
-            if(amount > 0.0)
+            BigDecimal amount = BigDecimal.valueOf(Double.valueOf(text));
+            if(amount.compareTo(new BigDecimal(0.0)) > 0)
                 MainManager.getInstance().chargeAmount(amount);
         } catch (Exception e) {
 

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/dialogs/ChargeDialog.java

@@ -6,6 +6,8 @@ import android.view.View;
 import android.view.Window;
 import android.widget.Button;
 
+import java.math.BigDecimal;
+
 import ms.warpzone.warppay.MainActivity;
 import ms.warpzone.warppay.R;
 import ms.warpzone.warppay.manager.MainManager;
@@ -43,16 +45,16 @@ public class ChargeDialog extends Dialog implements
 
     @Override
     public void onClick(View v) {
-        double amount = 0.0;
+        BigDecimal amount = new BigDecimal(0.0);
         switch (v.getId()) {
             case R.id.btnFiveEuro:
-                amount = 5.0;
+                amount = new BigDecimal(5.0);
                 break;
             case R.id.btnTenEuro:
-                amount = 10.0;
+                amount = new BigDecimal(10.0);
                 break;
             case R.id.btnTwentyEuro:
-                amount = 20.0;
+                amount = new BigDecimal(20.0);
                 break;
             case R.id.btnOther:
                 ChargeCustomDialog cd = new ChargeCustomDialog(this,this.c);
@@ -62,7 +64,7 @@ public class ChargeDialog extends Dialog implements
             default:
                 break;
         }
-        if(amount > 0.0)
+        if(amount.compareTo(new BigDecimal(0.0)) >  0)
             MainManager.getInstance().chargeAmount(amount);
         dismiss();
     }

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/dialogs/NyanCatDialog.java

@@ -44,8 +44,8 @@ public class NyanCatDialog extends Dialog implements View.OnClickListener{
         setContentView(R.layout.nyan_cat_dialog);
 
         this.vvNyanCat = (VideoView) findViewById(R.id.vvNyanCat);
-        String uri = "android.resource://" + MainManager.getInstance().getMainActivity().getPackageName() + "/" + R.raw.nyancat;
-        this.vvNyanCat.setVideoURI(Uri.parse(uri));
+       // String uri = "android.resource://" + MainManager.getInstance().getMainActivity().getPackageName() + "/" + R.raw.nyancat;
+        //this.vvNyanCat.setVideoURI(Uri.parse(uri));
         this.vvNyanCat.setOnClickListener(this);
         this.vvNyanCat.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
             public void onCompletion(MediaPlayer mp) {

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/dialogs/PinCodesDialog.java

@@ -69,8 +69,6 @@ public class PinCodesDialog extends Dialog implements View.OnClickListener, View
              default:
                 break;
         }
-
-        dismiss();
     }
 
     @Override

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/dialogs/ProductDialog.java

@@ -2,6 +2,7 @@ package ms.warpzone.warppay.dialogs;
 
 import android.app.Dialog;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.View;
 import android.view.Window;
 import android.widget.Button;
@@ -13,6 +14,7 @@ import ms.warpzone.warppay.MainActivity;
 import ms.warpzone.warppay.R;
 import ms.warpzone.warppay.data.models.local.Product;
 import ms.warpzone.warppay.manager.MainManager;
+import ms.warpzone.warppay.manager.RefreshManager;
 import ms.warpzone.warppay.manager.UiManager;
 import ms.warpzone.warppay.orderList.Order;
 
@@ -45,6 +47,7 @@ public class ProductDialog extends Dialog implements View.OnClickListener {
             prodButton.setWidth(200);
             prodButton.setGravity(0);
             String placeholder = "\n\n\n\n\n\n";
+
             placeholder = placeholder.substring(Integer.valueOf(p.getName().length() / 16));
             prodButton.setText(p.getName()+placeholder+String.valueOf(p.getPrice())+" Euro");
             prodButton.setTag(p.getName());
@@ -65,10 +68,11 @@ public class ProductDialog extends Dialog implements View.OnClickListener {
 
     @Override
     public void onClick(View view) {
-        MainManager.getInstance().startTimer();
+        RefreshManager.getInstance().startTimer();
         Button clicked = (Button) view;
         String product_name = (String) clicked.getTag();
         Product product = Product.getOneByName(product_name);
+
         Order order = new Order(product);
         UiManager.getInstance().addOrder(order);
         MainManager.getInstance().addOrder(order);

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/manager/DataManager.java

@@ -3,6 +3,7 @@ package ms.warpzone.warppay.manager;
 import android.util.Log;
 import android.widget.Toast;
 
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -21,7 +22,12 @@ public class DataManager {
     private User currentUser;
 
     private Boolean is_guest=false;
-    private double totalAmount;
+    private BigDecimal totalAmount = new BigDecimal(0.0);
+
+    public ArrayList<Order> getOrderList() {
+        return orderList;
+    }
+
     private ArrayList<Order> orderList;
     private String lastCardId;
 
@@ -35,7 +41,7 @@ public class DataManager {
 
     public void saveCurrentUser() {
         RestUser rest_user = RestUser.fromLocalUser(this.currentUser);
-        MainManager.getInstance().getRestService().saveUser(rest_user.getUserid(), rest_user).enqueue(new Callback<RestUser>() {
+        RestManager.getInstance().getRestService().saveUser(rest_user.getUserid(), rest_user).enqueue(new Callback<RestUser>() {
             @Override
             public void onResponse(Response<RestUser> response, Retrofit retrofit) {
                 if(response.code() == 403) {
@@ -60,41 +66,11 @@ public class DataManager {
         this.is_guest = is_guest;
     }
 
-    public void performPayment(Boolean cash) {
-        ArrayList transactions = new ArrayList<>();
-
-        for (Order order:this.orderList) {
-            RestTransaction transaction = new RestTransaction();
-            transaction.setProduct(RestProduct.fromLocalProduct(order.getProduct()));
-            transaction.setTrans_type(2);
-            if (this.is_guest || cash)
-                transaction.setCash_paid(true);
-            transactions.add(transaction);
-        }
-        MainManager.getInstance().getRestService().saveTransaction(this.currentUser.getUserid(), transactions).enqueue(new Callback<Void>() {
-            @Override
-            public void onResponse(Response<Void> response, Retrofit retrofit) {
-                Log.d("REST",String.valueOf(response.code()));
-            }
-
-            @Override
-            public void onFailure(Throwable t) {
-                Log.d("REST", t.getMessage());
-            }
-        });
-
-        if(!this.is_guest && !cash) {
-            this.currentUser.setCredit(this.currentUser.getCredit() - this.totalAmount);
-            this.currentUser.save();
-        }
-        this.totalAmount = 0.0;
-    }
-
     public void clearCurrentUser() {
         this.currentUser = null;
-        this.totalAmount = 0.0;
+        this.totalAmount = new BigDecimal(0.0);
         this.is_guest=false;
-        this.orderList = new ArrayList<Order>();
+        this.orderList = new ArrayList<>();
     }
 
     public User getCurrentUser() {
@@ -105,17 +81,17 @@ public class DataManager {
         this.currentUser = currentUser;
     }
 
-    public double getTotalAmount() {
+    public BigDecimal getTotalAmount() {
         return totalAmount;
     }
 
     public void addOrder(Order order) {
         this.orderList.add(order);
-        this.totalAmount += order.getProduct().getPrice();
+        this.totalAmount = this.totalAmount.add(order.getProduct().getPrice());
     }
     public void removeOrder(Order order) {
         this.orderList.remove(order);
-        this.totalAmount -= order.getProduct().getPrice();
+        this.totalAmount = this.totalAmount.subtract(order.getProduct().getPrice());
     }
     public void setLastCardId(String lastCardId) {
         this.lastCardId = lastCardId;

WarpDrinkApp/app/src/main/java/ms/warpzone/warppay/manager/RefreshManager.java

+package ms.warpzone.warppay.manager;
+
+import android.app.ProgressDialog;
+import android.content.DialogInterface;
+import android.os.Handler;
+import android.util.Log;
+
+import java.util.List;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import ms.warpzone.warppay.data.models.local.Category;
+import ms.warpzone.warppay.data.models.local.User;
+import ms.warpzone.warppay.data.models.rest.RestCategory;
+import ms.warpzone.warppay.data.models.rest.RestProduct;
+import ms.warpzone.warppay.data.models.rest.RestUser;
+import ms.warpzone.warppay.dialogs.NotificationDialog;
+import ms.warpzone.warppay.dialogs.NyanCatDialog;
+import retrofit.Callback;
+import retrofit.Response;
+import retrofit.Retrofit;
+
+public class RefreshManager {
+    private static RefreshManager ourInstance = new RefreshManager();
+    private Timer timer;
+    private Timer screenSaverTimer;
+    private Timer tmrRefresh;
+    public ProgressDialog pdProcess;
+    private NotificationDialog ndRefreshError = null;
+
+    private RefreshManager() {}
+    public static RefreshManager getInstance() {
+        return ourInstance;
+    }
+
+    void refreshData() {
+        this.refreshData(false);
+    }
+
+    public void refreshData(boolean disableDialog) {
+        if(this.ndRefreshError != null)
+            this.ndRefreshError.dismiss();
+        this.ndRefreshError = null;
+
+        if(!disableDialog)
+            pdProcess = ProgressDialog.show(MainManager.getInstance().getMainActivity(), "Processing...", "Loading...");
+
+
+
+        RestManager.getInstance().getRestService().getAllUser().enqueue(new Callback<List<RestUser>>() {
+            @Override
+            public void onResponse(Response<List<RestUser>> response, Retrofit retrofit) {
+                if(response.code() == 200 ) {
+                    List<User> userList = MainManager.getInstance().getSqLiteService().refreshUserData(response.body());
+                    if (userList != null) {
+                        UiManager.getInstance().refreshUserData(userList);
+                    }
+                } else {
+                    RefreshManager.getInstance().showRefreshError();
+                }
+            }
+
+            @Override
+            public void onFailure(Throwable t) {
+                Log.d("REST", t.getMessage());
+                RefreshManager.getInstance().showRefreshError();
+            }
+        });
+
+        RestManager.getInstance().getRestService().getAllCategories().enqueue(new Callback<List<RestCategory>>() {
+            @Override
+            public void onResponse(Response<List<RestCategory>> response, Retrofit retrofit) {
+                if(response.code() == 200 ) {
+                    List<Category> categoryList = MainManager.getInstance().getSqLiteService().refreshCategoryData(response.body());
+                    if (categoryList != null) {
+                        UiManager.getInstance().showCategoryButtons();
+                    }
+                } else {
+                    RefreshManager.getInstance().showRefreshError();
+                }
+            }
+
+            @Override
+            public void onFailure(Throwable t) {
+                Log.d("REST", t.getMessage());
+                RefreshManager.getInstance().showRefreshError();
+            }
+        });
+
+        RestManager.getInstance().getRestService().getAllProducts().enqueue(new Callback<List<RestProduct>>() {
+            @Override
+            public void onResponse(Response<List<RestProduct>> response, Retrofit retrofit) {
+                if(response.code() == 200 ) {
+                    List<ms.warpzone.warppay.data.models.local.Product> productList = MainManager.getInstance().getSqLiteService().refreshProductData(response.body());
+                    if (productList != null) {
+                        UiManager.getInstance().refreshProductData(productList);
+                    }
+                    if(RefreshManager.getInstance().pdProcess != null ) {
+                        RefreshManager.getInstance().pdProcess.dismiss();
+                        RefreshManager.getInstance().pdProcess = null;
+                    }
+                } else {
+                    RefreshManager.getInstance().showRefreshError();
+                }
+            }
+
+            @Override
+            public void onFailure(Throwable t) {
+                Log.d("REST", t.getMessage());
+                RefreshManager.getInstance().showRefreshError();
+            }
+        });
+    }
+
+    public void showRefreshError() {
+        if(ndRefreshError == null) {
+            RefreshManager.getInstance().stopRefreshTimer();
+            if (RefreshManager.getInstance().pdProcess != null) {
+                RefreshManager.getInstance().pdProcess.dismiss();
+                RefreshManager.getInstance().pdProcess = null;
+            }
+            ndRefreshError = new NotificationDialog(MainManager.getInstance().getMainActivity(),"WARNING","Refresh failed. Please retry!");
+            ndRefreshError.setWarning();
+            ndRefreshError.getBuilder().setNeutralButton("Refresh", new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialogInterface, int i) {
+                    RefreshManager.getInstance().refreshData();
+
+                }
+            });
+            ndRefreshError.show();
+
+            final Handler handler = new Handler();
+            final Runnable runnable = new Runnable() {
+                @Override
+                public void run() {
+                    RefreshManager.getInstance().refreshData();
+                }
+            };
+
+            ndRefreshError.getDialog().setOnDismissListener(new DialogInterface.OnDismissListener() {
+                @Override
+                public void onDismiss(DialogInterface dialog) {
+                    handler.removeCallbacks(runnable);
+                }
+            });
+
+            handler.postDelayed(runnable, 10000);
+        }
+
+    }
+    public void stopTimer() {
+        if (this.timer != null) {
+            this.timer.cancel();
+            this.timer.purge();
+        }
+    }
+
+    public void startTimer() {
+        this.stopTimer();
+        this.timer = new Timer();
+        TimerTask t = new TimerTask() {
+            @Override
+            public void run() {
+                Handler mainHandler = new Handler(MainManager.getInstance().getMainActivity().getApplicationContext().getMainLooper());
+                Runnable myRunnable = new Runnable() {
+                    @Override
+                    public void run() {
+                        MainManager.getInstance().clearCurrentUser();
+                    }
+                };
+                mainHandler.post(myRunnable);
+            }
+        };
+
+        this.timer.schedule(t, 60000);
+    }
+
+    public void startRefreshTimer() {
+        this.tmrRefresh = new Timer();
+        TimerTask t = new TimerTask() {
+            @Override
+            public void run() {
+                Handler mainHandler = new Handler(MainManager.getInstance().getMainActivity().getApplicationContext().getMainLooper());
+                Runnable myRunnable = new Runnable() {
+                    @Override
+                    public void run() {
+
+                        Log.d("REST","REFRESH TIMER RUNNING");
+                        if(MainManager.getInstance().getCurrentUser() == null)
+                            RefreshManager.getInstance().refreshData(true);
+                    }
+                };
+                mainHandler.post(myRunnable);
+            }
+        };
+        Log.d("REST","STARTING REFRESH TIMER");
+        this.tmrRefresh.schedule(t, 60000,60000);
+    }
+    public void stopRefreshTimer() {
+        if (this.tmrRefresh != null) {
+            this.tmrRefresh.cancel();
+            this.tmrRefresh.purge();
+        }
+    }
+    public void resetScreenSaverTimer() {
+        this.stopScreenSaverTimer();
+        this.screenSaverTimer = new Timer();
+
+        TimerTask t = new TimerTask() {
+            @Override
+            public void run() {
+                Handler mainHandler = new Handler(MainManager.getInstance().getMainActivity().getApplicationContext().getMainLooper());
+                Runnable myRunnable = new Runnable() {
+                    @Override
+                    public void run() {
+                        new NyanCatDialog().show();
+                    }
+                };
+                mainHandler.post(myRunnable);
+            }
+        };
+        this.screenSaverTimer.schedule(t, 4000);
+    }
+
+    public void stopScreenSaverTimer() {
+        if (this.screenSaverTimer != null) {
+            this.screenSaverTimer.cancel();
+            this.screenSaverTimer.purge();
+        }
+    }
+
+}