Update Sell tab in the RecordTransactionActivity allowing to register sell transaction

app/src/main/java/com/herbron/moodl/Activities/RecordTransactionActivity.java

@@ -33,6 +33,7 @@ import android.widget.TextView;
 import android.widget.TimePicker;
 
 import com.herbron.moodl.Activities.RecordTransactionFragments.BuyFragment;
+import com.herbron.moodl.Activities.RecordTransactionFragments.SellFragment;
 import com.herbron.moodl.CurrencyInfoUpdateNotifierInterface;
 import com.herbron.moodl.CustomAdapters.PairRecordListAdapter;
 import com.herbron.moodl.CustomLayouts.CustomRecordFragment;
@@ -150,6 +151,8 @@ public class RecordTransactionActivity extends AppCompatActivity implements Curr
 
         if(transactionId != -1)
         {
+            List<Exchange> exchangeList;
+            List<Pair> pairList;
             DatabaseManager databaseManager = new DatabaseManager(getBaseContext());
             Transaction transaction = databaseManager.getCurrencyTransactionById(transactionId);
             List<Currency> denominationList = cryptocompareApiManager.getCurrenciesDenomination();
@@ -194,7 +197,7 @@ public class RecordTransactionActivity extends AppCompatActivity implements Curr
             switch (transaction.getType())
             {
                 case "b":
-                    List<Exchange> exchangeList = cryptocompareApiManager.getExchangeList(currency.getSymbol());
+                    exchangeList = cryptocompareApiManager.getExchangeList(currency.getSymbol());
 
                     while(index < exchangeList.size() && !found)
                     {
@@ -214,7 +217,7 @@ public class RecordTransactionActivity extends AppCompatActivity implements Curr
                         index++;
                     }
 
-                    List<Pair> pairList = exchange.getPairsFor(currency.getSymbol());
+                    pairList = exchange.getPairsFor(currency.getSymbol());
 
                     found = false;
                     index = 0;
@@ -242,6 +245,50 @@ public class RecordTransactionActivity extends AppCompatActivity implements Curr
 
                     break;
                 case "s":
+                    exchangeList = cryptocompareApiManager.getExchangeList(currency.getSymbol());
+
+                    while(index < exchangeList.size() && !found)
+                    {
+                        if(exchangeList.get(index).getName().equals(transaction.getSource()))
+                        {
+                            exchange = exchangeList.get(index);
+
+                            exchange_autoCompleteTextView.setText(exchange.getName());
+                            exchange_autoCompleteTextView.setEnabled(true);
+
+                            updateExchangeData();
+
+                            updatePairAdapter();
+                            found = true;
+                        }
+
+                        index++;
+                    }
+
+                    pairList = exchange.getPairsFor(currency.getSymbol());
+
+                    found = false;
+                    index = 0;
+
+                    while(index < pairList.size() && !found)
+                    {
+                        if(pairList.get(index).contains(currency.getSymbol()) && pairList.get(index).contains(transaction.getSymPair()))
+                        {
+                            pair = pairList.get(index);
+
+                            pair_autoCompleteTextView.setText(PlaceholderManager.getPairString(pair.getFrom(), pair.getTo(), getBaseContext()));
+                            pair_autoCompleteTextView.setEnabled(true);
+
+                            ((SellFragment) pageAdapter.getItem(1)).updatePair(pair);
+
+                            updatePairData();
+
+                            found = true;
+                        }
+
+                        index++;
+                    }
+
                     tabLayout.getTabAt(1).select();
                     break;
                 case "t":

app/src/main/java/com/herbron/moodl/Activities/RecordTransactionFragments/BuyFragment.java

@@ -10,7 +10,6 @@ import android.support.design.widget.TextInputEditText;
 import android.support.v7.widget.AppCompatButton;
 import android.text.Editable;
 import android.text.TextWatcher;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -48,7 +47,7 @@ public class BuyFragment extends CustomRecordFragment {
     private static Spinner feesCurrencySpinner;
     private static View view;
 
-    private ArrayAdapter<String> currencyAdapter;
+    private ArrayAdapter<String> currencyFeeAdapter;
 
     private SimpleDateFormat sdf;
     private Calendar calendar;
@@ -179,10 +178,10 @@ public class BuyFragment extends CustomRecordFragment {
 
     private void initializeViewElements()
     {
-        totalValueEditText = view.findViewById(R.id.totalValue_editText);
+        totalValueEditText = view.findViewById(R.id.totalValue_editText_buy);
         totalValueEditText.addTextChangedListener(totalValueTextWatcher);
 
-        amoutEditText = view.findViewById(R.id.amount_editText);
+        amoutEditText = view.findViewById(R.id.amount_editText_buy);
         amoutEditText.addTextChangedListener(amountTextWatcher);
 
         buyPriceEditText = view.findViewById(R.id.buyPrice_editText);
@@ -195,11 +194,11 @@ public class BuyFragment extends CustomRecordFragment {
                 createDatePicker();
             }
         });
-        feesCurrencySpinner = view.findViewById(R.id.feesCurrency_editText);
+        feesCurrencySpinner = view.findViewById(R.id.feesCurrency_editText_buy);
 
-        currencyAdapter = new ArrayAdapter<String>(getSecureContext(), android.R.layout.simple_spinner_item, new ArrayList<>());
+        currencyFeeAdapter = new ArrayAdapter<String>(getSecureContext(), android.R.layout.simple_spinner_item, new ArrayList<>());
-        currencyAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        currencyFeeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        feesCurrencySpinner.setAdapter(currencyAdapter);
+        feesCurrencySpinner.setAdapter(currencyFeeAdapter);
 
         if(fragmentPair != null)
         {
@@ -272,7 +271,7 @@ public class BuyFragment extends CustomRecordFragment {
             }
         });
 
-        fees_editText = view.findViewById(R.id.fees_editText);
+        fees_editText = view.findViewById(R.id.fees_editText_buy);
         fees_editText.addTextChangedListener(new TextWatcher() {
             @Override
             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
@@ -372,7 +371,7 @@ public class BuyFragment extends CustomRecordFragment {
             }
         });
 
-        note_editText = view.findViewById(R.id.note_editText);
+        note_editText = view.findViewById(R.id.note_editText_buy);
 
         checkCallingIntent();
     }
@@ -443,9 +442,9 @@ public class BuyFragment extends CustomRecordFragment {
         symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(fragmentPair.getFrom(), getSecureContext()));
         symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(fragmentPair.getTo(), getSecureContext()));
 
-        currencyAdapter.clear();
+        currencyFeeAdapter.clear();
-        currencyAdapter.addAll(symbolStrings);
+        currencyFeeAdapter.addAll(symbolStrings);
-        currencyAdapter.notifyDataSetChanged();
+        currencyFeeAdapter.notifyDataSetChanged();
     }
 
     private void createDatePicker()
@@ -511,30 +510,27 @@ public class BuyFragment extends CustomRecordFragment {
 
     public void updatePair(Pair pair)
     {
-        currencyAdapter = new ArrayAdapter<String>(getSecureContext(), android.R.layout.simple_spinner_item, new ArrayList<>());
+        currencyFeeAdapter = new ArrayAdapter<String>(getSecureContext(), android.R.layout.simple_spinner_item, new ArrayList<>());
-        currencyAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        currencyFeeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        feesCurrencySpinner.setAdapter(currencyAdapter);
+        feesCurrencySpinner.setAdapter(currencyFeeAdapter);
 
         symbolStrings = new ArrayList<>();
         symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(pair.getFrom(), getSecureContext()));
         symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(pair.getTo(), getSecureContext()));
-        currencyAdapter.addAll(symbolStrings);
+        currencyFeeAdapter.addAll(symbolStrings);
-        currencyAdapter.notifyDataSetChanged();
+        currencyFeeAdapter.notifyDataSetChanged();
     }
 
     @Override
     public void onPairUpdated() {
         fragmentPair = pair;
 
-        fragmentCurrency.setOnTimestampPriceUpdatedListener(new Currency.OnTimestampPriceUpdatedListener() {
+        fragmentCurrency.addOnTimestampPriceUpdatedListener(new Currency.OnTimestampPriceUpdatedListener() {
             @Override
             public void onTimeStampPriceUpdated(String price) {
                 ((TextInputEditText) view.findViewById(R.id.buyPrice_editText)).setText(price);
 
-                if(currencyAdapter != null)
+                updatePair(fragmentPair);
-                {
-                    updateAdapter();
-                }
             }
         });
 

app/src/main/java/com/herbron/moodl/Activities/RecordTransactionFragments/SellFragment.java

@@ -1,37 +1,550 @@
 package com.herbron.moodl.Activities.RecordTransactionFragments;
 
+import android.app.DatePickerDialog;
+import android.content.Context;
+import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
+import android.support.design.widget.TextInputEditText;
+import android.support.v7.widget.AppCompatButton;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.DatePicker;
+import android.widget.Spinner;
+import android.widget.TimePicker;
 
+import com.herbron.moodl.Activities.HomeActivity;
 import com.herbron.moodl.CustomLayouts.CustomRecordFragment;
+import com.herbron.moodl.DataManagers.CurrencyData.Currency;
+import com.herbron.moodl.DataManagers.CurrencyData.Transaction;
+import com.herbron.moodl.DataManagers.DatabaseManager;
+import com.herbron.moodl.DataManagers.ExchangeManager.Exchange;
+import com.herbron.moodl.DataManagers.InfoAPIManagers.Pair;
+import com.herbron.moodl.DataManagers.PreferencesManager;
+import com.herbron.moodl.PlaceholderManager;
 import com.herbron.moodl.R;
 
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.List;
+import java.util.Locale;
+
 public class SellFragment extends CustomRecordFragment {
 
+    private TextInputEditText amoutEditText;
+    private TextInputEditText sellPriceEditText;
+    private TextInputEditText sellDateEditText;
+    private TextInputEditText totalValueEditText;
+    private TextInputEditText fees_editText;
+    private TextInputEditText note_editText;
+    private AppCompatButton saveSellButton;
+    private static Spinner feesCurrencySpinner;
+    private static View view;
+
+    private ArrayAdapter<String> currencyFeeAdapter;
+
+    private SimpleDateFormat sdf;
+    private Calendar calendar;
+    private PreferencesManager preferenceManager;
+
+    private static Context context;
+
+    private static Currency fragmentCurrency;
+    private static Exchange fragmentExchange;
+    private static Pair fragmentPair;
+    private List<String> symbolStrings;
+
+    private int transactionId;
+    private Transaction transaction;
+
+    private boolean isAmountLastUpdated;
+
+    private TextWatcher amountTextWatcher = new TextWatcher() {
+        @Override
+        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            totalValueEditText.removeTextChangedListener(totalValueTextWatcher);
+        }
+
+        @Override
+        public void onTextChanged(CharSequence s, int start, int before, int count) {
+            if(isFieldCorrectlyFilled(sellPriceEditText, false) && isFieldCorrectlyFilled(amoutEditText, false))
+            {
+                if(Double.parseDouble(amoutEditText.getText().toString()) > 0)
+                {
+                    Double totalValue = Double.parseDouble(sellPriceEditText.getText().toString()) * Double.parseDouble(s.toString());
+                    totalValueEditText.setText(String.format("%f", totalValue));
+                }
+                else
+                {
+                    totalValueEditText.setText("0");
+                }
+            }
+            else
+            {
+                totalValueEditText.setText("");
+            }
+        }
+
+        @Override
+        public void afterTextChanged(Editable s) {
+            totalValueEditText.addTextChangedListener(totalValueTextWatcher);
+            isAmountLastUpdated = true;
+        }
+    };
+
+    private TextWatcher totalValueTextWatcher = new TextWatcher() {
+        @Override
+        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            amoutEditText.removeTextChangedListener(amountTextWatcher);
+        }
+
+        @Override
+        public void onTextChanged(CharSequence s, int start, int before, int count) {
+            if(isFieldCorrectlyFilled(sellPriceEditText, false) && isFieldCorrectlyFilled(totalValueEditText, false))
+            {
+                if(Double.parseDouble(totalValueEditText.getText().toString()) > 0)
+                {
+                    Double amount = Double.parseDouble(s.toString()) / Double.parseDouble(sellPriceEditText.getText().toString());
+                    amoutEditText.setText(String.format("%f", amount));
+                }
+                else
+                {
+                    amoutEditText.setText("0");
+                }
+            }
+            else
+            {
+                amoutEditText.setText("");
+            }
+        }
+
+        @Override
+        public void afterTextChanged(Editable s) {
+            amoutEditText.addTextChangedListener(amountTextWatcher);
+            isAmountLastUpdated = false;
+        }
+    };
+
     @Nullable
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_sell, container, false);
+        view = inflater.inflate(R.layout.fragment_sell, container, false);
+
+        context = getActivity().getApplicationContext();
+
+        calendar = Calendar.getInstance();
+        sdf = new SimpleDateFormat(" HH:mm dd/MM/yyyy", Locale.UK);
+
+        preferenceManager = new PreferencesManager(getContext());
+
+        initializeViewElements();
+
         return view;
     }
 
+    private void initializeViewElements()
+    {
+        totalValueEditText = view.findViewById(R.id.totalValue_editText_sell);
+        totalValueEditText.addTextChangedListener(totalValueTextWatcher);
+
+        amoutEditText = view.findViewById(R.id.amount_editText_sell);
+        amoutEditText.addTextChangedListener(amountTextWatcher);
+
+        sellPriceEditText = view.findViewById(R.id.sellPrice_editText);
+        sellDateEditText = view.findViewById(R.id.sellDate_editText);
+        sellDateEditText.setText(sdf.format(calendar.getTime()));
+
+        sellDateEditText.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                createDatePicker();
+            }
+        });
+        feesCurrencySpinner = view.findViewById(R.id.feesCurrency_editText_sell);
+
+        currencyFeeAdapter = new ArrayAdapter<String>(getSecureContext(), android.R.layout.simple_spinner_item, new ArrayList<>());
+        currencyFeeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        feesCurrencySpinner.setAdapter(currencyFeeAdapter);
+
+        if(fragmentPair != null)
+        {
+            updateAdapter();
+        }
+
+        saveSellButton = view.findViewById(R.id.saveSellButton);
+        saveSellButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if(isFieldCorrectlyFilled(amoutEditText, true) && isFieldCorrectlyFilled(sellPriceEditText, true) && isFieldCorrectlyFilled(totalValueEditText, true))
+                {
+                    double amount = Double.parseDouble(amoutEditText.getText().toString());
+                    double purchasePrice = Double.parseDouble(sellPriceEditText.getText().toString());
+                    double fees;
+                    String feeCurrency;
+
+                    if(feesCurrencySpinner.getSelectedItemPosition() < 1)
+                    {
+                        feeCurrency = fragmentPair.getFrom();
+                    }
+                    else
+                    {
+                        feeCurrency = fragmentPair.getTo();
+                    }
+
+                    fees = getFees(feeCurrency, amount, purchasePrice);
+
+                    String note = note_editText.getText().toString();
+
+                    DatabaseManager databaseManager = new DatabaseManager(getContext());
+
+                    preferenceManager.setMustUpdateSummary(true);
+
+                    if(transactionId == -1)
+                    {
+                        databaseManager.addTransaction(fragmentCurrency.getSymbol()
+                                , amount
+                                , calendar.getTime()
+                                , purchasePrice
+                                , fees
+                                , note
+                                , fragmentPair.getFrom().equals(fragmentCurrency.getSymbol()) ? fragmentPair.getTo() : fragmentPair.getFrom()
+                                , feeCurrency
+                                , fragmentExchange.getName()
+                                , "s"
+                                , feesCurrencySpinner.getSelectedItemPosition() % 2 == 0 ? "p" : "f");
+
+                        Intent intent = new Intent(getActivity(), HomeActivity.class);
+                        intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
+                        startActivity(intent);
+                    }
+                    else
+                    {
+                        databaseManager.updateTransactionWithId(transactionId
+                                , amount
+                                , calendar.getTime()
+                                , purchasePrice
+                                , fees
+                                , note
+                                , fragmentPair.getFrom().equals(fragmentCurrency.getSymbol()) ? fragmentPair.getTo() : fragmentPair.getFrom()
+                                , feeCurrency
+                                , fragmentExchange.getName()
+                                , "s"
+                                , feesCurrencySpinner.getSelectedItemPosition() % 2 == 0 ? "p" : "f");
+                    }
+
+                    getActivity().finish();
+                }
+            }
+        });
+
+        fees_editText = view.findViewById(R.id.fees_editText_sell);
+        fees_editText.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+                totalValueEditText.removeTextChangedListener(totalValueTextWatcher);
+                amoutEditText.removeTextChangedListener(amountTextWatcher);
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+
+                if((isFieldCorrectlyFilled(amoutEditText, false) || isFieldCorrectlyFilled(totalValueEditText, false)) && isFieldCorrectlyFilled(sellPriceEditText, false))
+                {
+                    double amount = Double.parseDouble(amoutEditText.getText().toString());
+                    double purchasePrice = Double.parseDouble(sellPriceEditText.getText().toString());
+                    double fees;
+                    double totalValue = Double.parseDouble(totalValueEditText.getText().toString());
+                    String feeCurrency;
+
+                    if(isAmountLastUpdated)
+                    {
+                        totalValue = amount * purchasePrice;
+                    }
+                    else
+                    {
+                        amount = totalValue / purchasePrice;
+                    }
+
+                    if(fees_editText.getText().toString().equals("0") || (start == 0 && before == 1 && count == 0))
+                    {
+                        if(isAmountLastUpdated)
+                        {
+                            totalValueEditText.setText(String.valueOf(amount * purchasePrice));
+                        }
+                        else
+                        {
+                            amoutEditText.setText(String.valueOf(totalValue / purchasePrice));
+                        }
+                    }
+                    else
+                    {
+
+                        if(feesCurrencySpinner.getSelectedItemPosition() < 2)
+                        {
+                            feeCurrency = fragmentPair.getFrom();
+                        }
+                        else
+                        {
+                            feeCurrency = fragmentPair.getTo();
+                        }
+
+                        fees = getFees(feeCurrency, amount, purchasePrice);
+
+                        if(feesCurrencySpinner.getSelectedItemPosition() % 2 == 0)
+                        {
+                            if(isAmountLastUpdated)
+                            {
+                                totalValueEditText.setText(String.valueOf(totalValue + fees));
+                            }
+                            else
+                            {
+                                amoutEditText.setText(String.valueOf(amount - (fees / purchasePrice)));
+                            }
+                        }
+                        else
+                        {
+                            if(fragmentCurrency.getSymbol().equals(feeCurrency))
+                            {
+                                if(isAmountLastUpdated)
+                                {
+                                    totalValueEditText.setText(String.valueOf(totalValue + (fees * purchasePrice)));
+                                }
+                                else
+                                {
+                                    amoutEditText.setText(String.valueOf((totalValue / purchasePrice) - fees));
+                                }
+                            }
+                            else
+                            {
+                                if(isAmountLastUpdated)
+                                {
+                                    totalValueEditText.setText(String.valueOf(totalValue + fees));
+                                }
+                                else
+                                {
+                                    amoutEditText.setText(String.valueOf((totalValue - fees) / purchasePrice));
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                totalValueEditText.addTextChangedListener(totalValueTextWatcher);
+                amoutEditText.addTextChangedListener(amountTextWatcher);
+            }
+        });
+
+        note_editText = view.findViewById(R.id.note_editText_sell);
+
+        checkCallingIntent();
+    }
+
+    private double getFees(String feeCurrency, double amount, double purchasedPrice)
+    {
+        double fees;
+
+        if(fees_editText.getText().toString().equals(""))
+        {
+            fees = 0;
+        }
+        else
+        {
+            fees = Double.parseDouble(fees_editText.getText().toString());
+
+            if(feesCurrencySpinner.getSelectedItemPosition() % 2 == 0)
+            {
+                if(fragmentCurrency.getSymbol().equals(feeCurrency))
+                {
+                    fees = (100 * amount) / (100 + fees);
+                }
+                else
+                {
+                    double base = (100 * purchasedPrice * amount) / (100 + fees);
+
+                    fees = purchasedPrice * amount - base;
+                }
+            }
+        }
+
+        return fees;
+    }
+
+    private void checkCallingIntent()
+    {
+        Intent intent = getActivity().getIntent();
+        transactionId = intent.getIntExtra("transactionId", -1);
+
+        if(transactionId != -1)
+        {
+            DatabaseManager databaseManager = new DatabaseManager(context);
+            transaction = databaseManager.getCurrencyTransactionById(transactionId);
+
+            if(transaction.getType().equals("b"))
+            {
+                fillFields();
+            }
+        }
+    }
+
+    private void fillFields()
+    {
+        amoutEditText.setText(String.valueOf(transaction.getAmount()));
+        sellPriceEditText.setText(String.valueOf(transaction.getPrice()));
+        calendar.setTimeInMillis(transaction.getTimestamp());
+        sellDateEditText.setText(sdf.format(calendar.getTime()));
+        totalValueEditText.setText(String.valueOf(transaction.getAmount() * transaction.getPrice()));
+        fees_editText.setText(String.valueOf(transaction.getFees()));
+        note_editText.setText(transaction.getNote());
+    }
+
+    private void updateAdapter()
+    {
+        symbolStrings = new ArrayList<>();
+        symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(fragmentPair.getFrom(), getSecureContext()));
+        symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(fragmentPair.getTo(), getSecureContext()));
+
+        currencyFeeAdapter.clear();
+        currencyFeeAdapter.addAll(symbolStrings);
+        currencyFeeAdapter.notifyDataSetChanged();
+    }
+
+    private static Context getSecureContext()
+    {
+        return context;
+    }
+
+    private void createDatePicker()
+    {
+        DatePickerDialog datePickerDialog = new DatePickerDialog(
+                getContext(),
+                new DatePickerDialog.OnDateSetListener() {
+                    @Override
+                    public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
+                        calendar.set(Calendar.YEAR, year);
+                        calendar.set(Calendar.MONTH, month);
+                        calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
+                        sellDateEditText.setText(sdf.format(calendar.getTime()));
+                        createTimePicker();
+                    }
+                },
+                calendar.get(Calendar.YEAR),
+                calendar.get(Calendar.MONTH),
+                calendar.get(Calendar.DAY_OF_MONTH)
+        );
+
+        datePickerDialog.getDatePicker().setMaxDate(Calendar.getInstance().getTimeInMillis());
+        datePickerDialog.show();
+    }
+
+    private void createTimePicker()
+    {
+        new android.app.TimePickerDialog(
+                getContext(),
+                new android.app.TimePickerDialog.OnTimeSetListener() {
+                    @Override
+                    public void onTimeSet(TimePicker view, int hour, int minute) {
+                        calendar.set(Calendar.HOUR_OF_DAY, hour);
+                        calendar.set(Calendar.MINUTE, minute);
+                        sellDateEditText.setText(sdf.format(calendar.getTime()));
+
+                        if(fragmentCurrency != null)
+                        {
+                            fragmentCurrency.getTimestampPrice(getContext(), fragmentCurrency.getSymbol().equals(fragmentPair.getFrom()) ? fragmentPair.getTo() : fragmentPair.getFrom(),calendar.getTimeInMillis() / 1000);
+                        }
+                    }
+                },
+                calendar.get(Calendar.HOUR_OF_DAY),
+                calendar.get(Calendar.MINUTE),
+                true
+        ).show();
+    }
+
+    private boolean isFieldCorrectlyFilled(TextInputEditText editText, boolean displayError)
+    {
+        String purchasedPriceText = editText.getText().toString();
+        double purchasedPrice;
+
+        try {
+            purchasedPrice = Double.parseDouble(purchasedPriceText);
+
+            if(purchasedPrice < 0)
+            {
+                if(displayError) editText.setError(getResources().getString(R.string.field_negative));
+
+                return false;
+            }
+        } catch (NumberFormatException e) {
+            if(displayError) editText.setError(getResources().getString(R.string.field_nan));
+
+            return false;
+        }
+
+        if(purchasedPriceText.equals(""))
+        {
+            if(displayError) editText.setError(getResources().getString(R.string.field_empty));
+
+            return false;
+        }
+
+        return true;
+    }
+
     @Override
     public void onCurrencyUpdated() {
-
+        fragmentCurrency = currency;
     }
 
     @Override
     public void onExchangeUpdated() {
+        fragmentExchange = exchange;
+    }
 
+    public void updatePair(Pair pair)
+    {
+        currencyFeeAdapter = new ArrayAdapter<String>(getSecureContext(), android.R.layout.simple_spinner_item, new ArrayList<>());
+        currencyFeeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        feesCurrencySpinner.setAdapter(currencyFeeAdapter);
+
+        symbolStrings = new ArrayList<>();
+        symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(pair.getFrom(), getSecureContext()));
+        symbolStrings.addAll(PlaceholderManager.getFeeOptionsForSymbol(pair.getTo(), getSecureContext()));
+        currencyFeeAdapter.addAll(symbolStrings);
+        currencyFeeAdapter.notifyDataSetChanged();
     }
 
     @Override
     public void onPairUpdated() {
+        fragmentPair = pair;
 
+        fragmentCurrency.addOnTimestampPriceUpdatedListener(new Currency.OnTimestampPriceUpdatedListener() {
+            @Override
+            public void onTimeStampPriceUpdated(String price) {
+                ((TextInputEditText) view.findViewById(R.id.sellPrice_editText)).setText(price);
+
+                updatePair(fragmentPair);
+            }
+        });
+
+        if(preferenceManager == null)
+        {
+            preferenceManager = new PreferencesManager(getSecureContext());
+        }
+
+        if(calendar == null)
+        {
+            calendar = Calendar.getInstance();
+        }
+
+        fragmentCurrency.getTimestampPrice(getSecureContext(), fragmentCurrency.getSymbol().equals(fragmentPair.getFrom()) ? fragmentPair.getTo() : fragmentPair.getFrom(), calendar.getTimeInMillis() / 1000);
     }
 }

app/src/main/java/com/herbron/moodl/DataManagers/CurrencyData/Currency.java

@@ -44,7 +44,7 @@ public class Currency implements Parcelable {
     private int rank;
     private String startDate;
     private List<String> socialMediaLinks;
-    private OnTimestampPriceUpdatedListener onTimestampPriceUpdatedListener;
+    private List<OnTimestampPriceUpdatedListener> onTimestampPriceUpdatedListenerList;
     //private String proofType
 
     private CurrencyInfoUpdateNotifierInterface currencyInfoUpdateNotifierInterface;
@@ -82,8 +82,6 @@ public class Currency implements Parcelable {
         this.currencyInfoUpdateNotifierInterface = currencyInfoUpdateNotifierInterface;
     }
 
-    //public Currency(int id, String symbol, String name, String algorithm, String proofType, )
-
     public void getTimestampPrice(android.content.Context context, String toSymbol, long timestamp)
     {
         dataRetriver = new CurrencyDataRetriever(context);
@@ -96,9 +94,12 @@ public class Currency implements Parcelable {
             public void onSuccess(String price) {
                 currencyInfoUpdateNotifierInterface.onTimestampPriceUpdated(price);
 
-                if(onTimestampPriceUpdatedListener != null)
+                if(onTimestampPriceUpdatedListenerList != null)
                 {
-                    onTimestampPriceUpdatedListener.onTimeStampPriceUpdated(price);
+                    for(int i = 0; i < onTimestampPriceUpdatedListenerList.size(); i++)
+                    {
+                        onTimestampPriceUpdatedListenerList.get(i).onTimeStampPriceUpdated(price);
+                    }
                 }
             }
         }, timestamp);
@@ -221,12 +222,6 @@ public class Currency implements Parcelable {
         }, CurrencyDataRetriever.DAYS);
     }
 
-    public void updateDetails(android.content.Context context, final CurrencyCallBack callBack)
-    {
-            dataRetriver = new CurrencyDataRetriever(context);
-
-    }
-
     private int getDarkenColor(int color)
     {
         int transColor;
@@ -542,8 +537,13 @@ public class Currency implements Parcelable {
         void onTimeStampPriceUpdated(String price);
     }
 
-    public void setOnTimestampPriceUpdatedListener(OnTimestampPriceUpdatedListener onTimestampPriceUpdatedListener)
+    public void addOnTimestampPriceUpdatedListener(OnTimestampPriceUpdatedListener onTimestampPriceUpdatedListener)
     {
-        this.onTimestampPriceUpdatedListener = onTimestampPriceUpdatedListener;
+        if(onTimestampPriceUpdatedListenerList == null)
+        {
+            onTimestampPriceUpdatedListenerList = new ArrayList<>();
+        }
+
+        onTimestampPriceUpdatedListenerList.add(onTimestampPriceUpdatedListener);
     }
 }

app/src/main/res/layout-v21/fragment_buy.xml

@@ -1,135 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="@drawable/record_transaction_layout_background_buy">
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_margin="@dimen/margin"
-        android:orientation="vertical">
-
-        <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_amount"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <android.support.design.widget.TextInputEditText
-                android:id="@+id/amount_editText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:inputType="numberDecimal"
-                android:hint="@string/activity_add_amount"/>
-
-        </android.support.design.widget.TextInputLayout>
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal"
-            android:baselineAligned="false">
-
-            <android.support.design.widget.TextInputLayout
-                android:id="@+id/input_buyPrice"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_weight="1.5">
-
-                <android.support.design.widget.TextInputEditText
-                    android:id="@+id/buyPrice_editText"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:inputType="numberDecimal"
-                    android:hint="@string/activity_purchase_price"/>
-
-            </android.support.design.widget.TextInputLayout>
-
-            <android.support.design.widget.TextInputLayout
-                android:id="@+id/input_buyDate"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_weight="1">
-
-                <android.support.design.widget.TextInputEditText
-                    android:id="@+id/buyDate_editText"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:hint="@string/activity_purchase_date"
-                    android:focusable="false"/>
-
-            </android.support.design.widget.TextInputLayout>
-
-        </LinearLayout>
-
-        <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_totalValue"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <android.support.design.widget.TextInputEditText
-                android:id="@+id/totalValue_editText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:inputType="numberDecimal"
-                android:hint="@string/total_value"/>
-
-        </android.support.design.widget.TextInputLayout>
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal">
-
-            <android.support.design.widget.TextInputLayout
-                android:id="@+id/input_fees"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_weight="0.7">
-
-                <android.support.design.widget.TextInputEditText
-                    android:id="@+id/fees_editText"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:inputType="numberDecimal"
-                    android:hint="@string/activity_fees"/>
-
-            </android.support.design.widget.TextInputLayout>
-
-            <Spinner
-                android:id="@+id/feesCurrency_editText"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:layout_weight="1"/>
-
-        </LinearLayout>
-
-        <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_note"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <android.support.design.widget.TextInputEditText
-                android:id="@+id/note_editText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:hint="@string/notes"
-                android:maxLines="4"
-                android:lines="4"
-                android:gravity="top"/>
-
-        </android.support.design.widget.TextInputLayout>
-
-        <android.support.v7.widget.AppCompatButton
-            android:id="@+id/saveBuyButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textColor="@color/white"
-            android:text="@string/save"
-            android:layout_marginBottom="@dimen/mdtp_minimum_margin_top_bottom"
-            android:layout_gravity="end"
-            style="@style/Widget.AppCompat.Button.Colored"/>
-
-    </LinearLayout>
-
-</ScrollView>

app/src/main/res/layout-v21/fragment_sell.xml

@@ -1,135 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="@drawable/record_transaction_layout_background_sell">
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_margin="@dimen/margin"
-        android:orientation="vertical">
-
-        <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_amount"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <android.support.design.widget.TextInputEditText
-                android:id="@+id/amount_editText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:inputType="numberDecimal"
-                android:hint="@string/activity_add_amount"/>
-
-        </android.support.design.widget.TextInputLayout>
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal"
-            android:baselineAligned="false">
-
-            <android.support.design.widget.TextInputLayout
-                android:id="@+id/input_sellPrice"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_weight="1.5">
-
-                <android.support.design.widget.TextInputEditText
-                    android:id="@+id/sellPrice_editText"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:inputType="numberDecimal"
-                    android:hint="@string/activity_sell_price"/>
-
-            </android.support.design.widget.TextInputLayout>
-
-            <android.support.design.widget.TextInputLayout
-                android:id="@+id/input_sellDate"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_weight="1">
-
-                <android.support.design.widget.TextInputEditText
-                    android:id="@+id/sellDate_editText"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:hint="@string/activity_sell_date"
-                    android:focusable="false"/>
-
-            </android.support.design.widget.TextInputLayout>
-
-        </LinearLayout>
-
-        <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_totalValue"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <android.support.design.widget.TextInputEditText
-                android:id="@+id/totalValue_editText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:inputType="numberDecimal"
-                android:hint="@string/total_value"/>
-
-        </android.support.design.widget.TextInputLayout>
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal">
-
-            <android.support.design.widget.TextInputLayout
-                android:id="@+id/input_fees"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_weight="0.7">
-
-                <android.support.design.widget.TextInputEditText
-                    android:id="@+id/fees_editText"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:inputType="numberDecimal"
-                    android:hint="@string/activity_fees"/>
-
-            </android.support.design.widget.TextInputLayout>
-
-            <Spinner
-                android:id="@+id/feesCurrency_editText"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:layout_weight="1"/>
-
-        </LinearLayout>
-
-        <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_note"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <android.support.design.widget.TextInputEditText
-                android:id="@+id/note_editText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:hint="@string/notes"
-                android:maxLines="4"
-                android:lines="4"
-                android:gravity="top"/>
-
-        </android.support.design.widget.TextInputLayout>
-
-        <android.support.v7.widget.AppCompatButton
-            android:id="@+id/saveSellButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textColor="@color/white"
-            android:text="@string/save"
-            android:layout_marginBottom="@dimen/mdtp_minimum_margin_top_bottom"
-            android:layout_gravity="end"
-            style="@style/Widget.AppCompat.Button.Colored"/>
-
-    </LinearLayout>
-
-</ScrollView>

app/src/main/res/layout-v21/fragment_transfer.xml

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="@drawable/record_transaction_layout_background_transfer">
-
-    <TextView
-        android:text="transfer fragment"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:gravity="center"
-        android:layout_centerVertical="true"
-        android:layout_centerHorizontal="true"/>
-
-</RelativeLayout>

app/src/main/res/layout/fragment_buy.xml

@@ -11,12 +11,12 @@
         android:orientation="vertical">
 
         <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_amount"
+            android:id="@+id/input_amount_buy"
             android:layout_width="match_parent"
             android:layout_height="wrap_content">
 
             <android.support.design.widget.TextInputEditText
-                android:id="@+id/amount_editText"
+                android:id="@+id/amount_editText_buy"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:inputType="numberDecimal"
@@ -63,12 +63,12 @@
         </LinearLayout>
 
         <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_totalValue"
+            android:id="@+id/input_totalValue_buy"
             android:layout_width="match_parent"
             android:layout_height="wrap_content">
 
             <android.support.design.widget.TextInputEditText
-                android:id="@+id/totalValue_editText"
+                android:id="@+id/totalValue_editText_buy"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:inputType="numberDecimal"
@@ -82,13 +82,13 @@
             android:orientation="horizontal">
 
             <android.support.design.widget.TextInputLayout
-                android:id="@+id/input_fees"
+                android:id="@+id/input_fees_buy"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_weight="0.7">
 
                 <android.support.design.widget.TextInputEditText
-                    android:id="@+id/fees_editText"
+                    android:id="@+id/fees_editText_buy"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:inputType="numberDecimal"
@@ -97,7 +97,7 @@
             </android.support.design.widget.TextInputLayout>
 
             <Spinner
-                android:id="@+id/feesCurrency_editText"
+                android:id="@+id/feesCurrency_editText_buy"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:layout_weight="1"/>
@@ -105,12 +105,12 @@
         </LinearLayout>
 
         <android.support.design.widget.TextInputLayout
-            android:id="@+id/input_note"
+            android:id="@+id/input_note_buy"
             android:layout_width="match_parent"
             android:layout_height="wrap_content">
 
             <android.support.design.widget.TextInputEditText
-                android:id="@+id/note_editText"
+                android:id="@+id/note_editText_buy"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:hint="@string/notes"

app/src/main/res/layout/fragment_sell.xml

@@ -1,15 +1,135 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@drawable/record_transaction_layout_background_sell">
 
-    <TextView
+    <LinearLayout
-        android:text="sell fragment"
+        android:layout_width="match_parent"
-        android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:gravity="center"
+        android:layout_margin="@dimen/margin"
-        android:layout_centerVertical="true"
+        android:orientation="vertical">
-        android:layout_centerHorizontal="true"/>
 
-</RelativeLayout>
+        <android.support.design.widget.TextInputLayout
+            android:id="@+id/input_amount_sell"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <android.support.design.widget.TextInputEditText
+                android:id="@+id/amount_editText_sell"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="numberDecimal"
+                android:hint="@string/activity_add_amount"/>
+
+        </android.support.design.widget.TextInputLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:baselineAligned="false">
+
+            <android.support.design.widget.TextInputLayout
+                android:id="@+id/input_sellPrice"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_weight="1.5">
+
+                <android.support.design.widget.TextInputEditText
+                    android:id="@+id/sellPrice_editText"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:inputType="numberDecimal"
+                    android:hint="@string/activity_sell_price"/>
+
+            </android.support.design.widget.TextInputLayout>
+
+            <android.support.design.widget.TextInputLayout
+                android:id="@+id/input_sellDate"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_weight="1">
+
+                <android.support.design.widget.TextInputEditText
+                    android:id="@+id/sellDate_editText"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:hint="@string/activity_sell_date"
+                    android:focusable="false"/>
+
+            </android.support.design.widget.TextInputLayout>
+
+        </LinearLayout>
+
+        <android.support.design.widget.TextInputLayout
+            android:id="@+id/input_totalValue_sell"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <android.support.design.widget.TextInputEditText
+                android:id="@+id/totalValue_editText_sell"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="numberDecimal"
+                android:hint="@string/total_value"/>
+
+        </android.support.design.widget.TextInputLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <android.support.design.widget.TextInputLayout
+                android:id="@+id/input_fees_sell"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_weight="0.7">
+
+                <android.support.design.widget.TextInputEditText
+                    android:id="@+id/fees_editText_sell"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:inputType="numberDecimal"
+                    android:hint="@string/activity_fees"/>
+
+            </android.support.design.widget.TextInputLayout>
+
+            <Spinner
+                android:id="@+id/feesCurrency_editText_sell"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"/>
+
+        </LinearLayout>
+
+        <android.support.design.widget.TextInputLayout
+            android:id="@+id/input_note_sell"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <android.support.design.widget.TextInputEditText
+                android:id="@+id/note_editText_sell"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:hint="@string/notes"
+                android:maxLines="4"
+                android:lines="4"
+                android:gravity="top"/>
+
+        </android.support.design.widget.TextInputLayout>
+
+        <android.support.v7.widget.AppCompatButton
+            android:id="@+id/saveSellButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textColor="@color/white"
+            android:text="@string/save"
+            android:layout_marginBottom="@dimen/mdtp_minimum_margin_top_bottom"
+            android:layout_gravity="end"
+            style="@style/Widget.AppCompat.Button.Colored"/>
+
+    </LinearLayout>
+
+</ScrollView>