diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index bbfd3f9a72..fe5a450625 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/app/build.gradle b/app/build.gradle
index 625d07fe40..1babdde988 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -15,7 +15,7 @@ android {
         applicationId "com.tangem.wallet"
         minSdkVersion 21
         targetSdkVersion 27
-        versionCode 31
+        versionCode 32
         versionName "0.85.5." + generateVersionName()
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
diff --git a/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.java b/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.java
index 27a06193a5..06a0e7c330 100644
--- a/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.java
+++ b/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.java
@@ -429,7 +429,7 @@ public class ConfirmPaymentActivity extends AppCompatActivity implements NfcAdap
         } else {
             tvBalance.setText(engine.GetBalanceWithAlter(mCard));
         }
-        etAmount.setText(getIntent().getStringExtra("Amount"));
+        etAmount.setText(getIntent().getStringExtra(SignPaymentActivity.EXTRA_AMOUNT));
         tvCurrency.setText(engine.GetBalanceCurrency(mCard));
         tvCurrency2.setText(engine.GetFeeCurrency());
 
@@ -593,7 +593,11 @@ public class ConfirmPaymentActivity extends AppCompatActivity implements NfcAdap
                 intent.putExtra("UID", mCard.getUID());
                 intent.putExtra("Card", mCard.getAsBundle());
                 intent.putExtra("Wallet", etWallet.getText().toString());
-                intent.putExtra("Amount", etAmount.getText().toString());
+                intent.putExtra(SignPaymentActivity.EXTRA_AMOUNT, etAmount.getText().toString());
+
+//                if (BuildConfig.DEBUG)
+//                    Toast.makeText(this, etAmount.getText().toString(), Toast.LENGTH_LONG).show();
+
                 intent.putExtra("Fee", etFee.getText().toString());
                 startActivityForResult(intent, REQUEST_CODE_SIGN_PAYMENT);
             } else {
diff --git a/app/src/main/java/com/tangem/presentation/activity/PreparePaymentActivity.java b/app/src/main/java/com/tangem/presentation/activity/PreparePaymentActivity.java
index a64c3bdcfe..9704006b64 100644
--- a/app/src/main/java/com/tangem/presentation/activity/PreparePaymentActivity.java
+++ b/app/src/main/java/com/tangem/presentation/activity/PreparePaymentActivity.java
@@ -16,6 +16,7 @@ import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ImageView;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import com.tangem.domain.cardReader.NfcManager;
 import com.tangem.domain.wallet.Blockchain;
@@ -23,6 +24,7 @@ import com.tangem.domain.wallet.CoinEngine;
 import com.tangem.domain.wallet.CoinEngineFactory;
 import com.tangem.domain.wallet.TangemCard;
 import com.tangem.util.FormatUtil;
+import com.tangem.wallet.BuildConfig;
 import com.tangem.wallet.R;
 
 import java.io.IOException;
@@ -104,6 +106,7 @@ public class PreparePaymentActivity extends AppCompatActivity implements NfcAdap
 //                    e.printStackTrace();
 //                    tvAmountEquivalent.setText("");
 //                }
+
             }
 
             @Override
@@ -136,7 +139,11 @@ public class PreparePaymentActivity extends AppCompatActivity implements NfcAdap
 
         btnVerify.setOnClickListener(v -> {
             String strAmount;
-            strAmount = etAmount.getText().toString().replace(",",".");
+            strAmount = etAmount.getText().toString().replace(",", ".");
+
+            if (BuildConfig.DEBUG)
+                Toast.makeText(this, strAmount, Toast.LENGTH_LONG).show();
+
             CoinEngine engine1 = CoinEngineFactory.Create(mCard.getBlockchain());
 
             Log.i(TAG, mCard.getBlockchain().getOfficialName());
@@ -150,7 +157,11 @@ public class PreparePaymentActivity extends AppCompatActivity implements NfcAdap
                 return;
             }
 
-            boolean checkAddress = engine1.ValdateAddress(etWallet.getText().toString(), mCard);
+            boolean checkAddress = false;
+            if (engine1 != null) {
+                checkAddress = engine1.ValdateAddress(etWallet.getText().toString(), mCard);
+            }
+
             if (!checkAddress) {
                 etWallet.setError(getString(R.string.incorrect_destination_wallet_address));
                 return;
@@ -165,7 +176,7 @@ public class PreparePaymentActivity extends AppCompatActivity implements NfcAdap
             intent.putExtra("UID", mCard.getUID());
             intent.putExtra("Card", mCard.getAsBundle());
             intent.putExtra("Wallet", etWallet.getText().toString());
-            intent.putExtra("Amount", strAmount);
+            intent.putExtra(SignPaymentActivity.EXTRA_AMOUNT, strAmount);
             startActivityForResult(intent, REQUEST_CODE_SEND_PAYMENT);
         });
 
diff --git a/app/src/main/java/com/tangem/presentation/activity/SignPaymentActivity.java b/app/src/main/java/com/tangem/presentation/activity/SignPaymentActivity.java
index 3775aa9091..6899e3b505 100644
--- a/app/src/main/java/com/tangem/presentation/activity/SignPaymentActivity.java
+++ b/app/src/main/java/com/tangem/presentation/activity/SignPaymentActivity.java
@@ -1 +1 @@
-package com.tangem.presentation.activity;

import android.app.Activity;
import android.content.Intent;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.nfc.tech.IsoDep;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.tangem.data.nfc.SignPaymentTask;
import com.tangem.domain.cardReader.CardProtocol;
import com.tangem.domain.cardReader.NfcManager;
import com.tangem.domain.wallet.TangemCard;
import com.tangem.presentation.dialog.NoExtendedLengthSupportDialog;
import com.tangem.presentation.dialog.WaitSecurityDelayDialog;
import com.tangem.util.Util;
import com.tangem.wallet.R;

public class SignPaymentActivity extends AppCompatActivity implements NfcAdapter.ReaderCallback, CardProtocol.Notifications {

    public static final int REQUEST_CODE_SEND_PAYMENT = 1;
    public static final int RESULT_INVALID_PIN = Activity.RESULT_FIRST_USER;
    private TangemCard mCard;
    private TextView tvCardID;
    private NfcManager mNfcManager;
    private static final String logTag = "SignPayment";
    private ProgressBar progressBar;
    private SignPaymentTask signPaymentTask;
    private String amountStr;
    private String feeStr;
    private String outAddressStr;
    private boolean lastReadSuccess = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sign_payment);

        MainActivity.commonInit(getApplicationContext());

        mCard = new TangemCard(getIntent().getStringExtra("UID"));
        mCard.LoadFromBundle(getIntent().getExtras().getBundle("Card"));
        amountStr = getIntent().getStringExtra("Amount");
        feeStr = getIntent().getStringExtra("Fee");
        outAddressStr = getIntent().getStringExtra("Wallet");

        tvCardID = findViewById(R.id.tvCardID);
        tvCardID.setText(mCard.getCIDDescription());

        mNfcManager = new NfcManager(this, this);

        progressBar = findViewById(R.id.progressBar);
        progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
        progressBar.setVisibility(View.INVISIBLE);
    }

    @Override
    public void onTagDiscovered(Tag tag) {
        try {
            // get IsoDep handle and run cardReader thread
            final IsoDep isoDep = IsoDep.get(tag);
            if (isoDep == null) {
                throw new CardProtocol.TangemException(getString(R.string.wrong_tag_err));
            }
            byte UID[] = tag.getId();
            String sUID = Util.byteArrayToHexString(UID);
            Log.v(logTag, "UID: " + sUID);

            if (sUID.equals(mCard.getUID())) {
                if (lastReadSuccess) {
                    isoDep.setTimeout(mCard.getPauseBeforePIN2() + 5000);
                } else {
                    isoDep.setTimeout(mCard.getPauseBeforePIN2() + 65000);
                }
                signPaymentTask = new SignPaymentTask(this, mCard, mNfcManager, isoDep, this, amountStr, feeStr, outAddressStr);
                signPaymentTask.start();
            } else {
                Log.d(logTag, "Mismatch card UID (" + sUID + " instead of " + mCard.getUID() + ")");
                mNfcManager.ignoreTag(isoDep.getTag());
                return;
            }

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    @Override
    public void onResume() {
        super.onResume();
        mNfcManager.onResume();
    }

    @Override
    public void onPause() {
        mNfcManager.onPause();
        if (signPaymentTask != null) {
            signPaymentTask.cancel(true);
        }
        super.onPause();
    }

    @Override
    public void onStop() {
        // dismiss enable NFC dialog
        mNfcManager.onStop();
        if (signPaymentTask != null) {
            signPaymentTask.cancel(true);
        }
        super.onStop();
    }

//    @Override
//    public Dialog CreateNFCDialog(int id, AlertDialogWrapper.Builder builder, LayoutInflater li) {
//        return mNfcManager.onCreateDialog(id, builder, li);
//    }

//    private class SignPaymentTask extends Thread {
//
//        String txAmount = "";
//        String txFee = "";
//
//        public void SetTransactionValue(String amount, String fee) {
//            txAmount = amount;
//            txFee = fee;
//        }
//
//        private String txOutAddress;
//
//        IsoDep mIsoDep;
//        CardProtocol.Notifications mNotifications;
//        private boolean isCancelled = false;
//
//        public SignPaymentTask(IsoDep isoDep, CardProtocol.Notifications notifications, String amount, String fee, String outAddress) {
//            mIsoDep = isoDep;
//            mNotifications = notifications;
//            txOutAddress = outAddress;
//            SetTransactionValue(amount, fee);
//        }
//
//        @Override
//        public void run() {
//            if (mIsoDep == null) {
//                return;
//            }
//            CardProtocol protocol = new CardProtocol(getBaseContext(), mIsoDep, mCard, mNotifications);
//
//            mNotifications.OnReadStart(protocol);
//            try {
//
//                // for Samsung's bugs -
//                // Workaround for the Samsung Galaxy S5 (since the
//                // first connection always hangs on transceive).
//                int timeout = mIsoDep.getTimeout();
//                mIsoDep.connect();
//                mIsoDep.close();
//                mIsoDep.connect();
//                mIsoDep.setTimeout(timeout);
//                try {
//                    mNotifications.OnReadProgress(protocol, 5);
//
//                    Log.i("SignPaymentTask", "[-- Start sign payment --]");
//
//                    if (isCancelled) return;
//                    protocol.run_VerifyCard();
//
//                    Log.i("SignPaymentTask", "Manufacturer: " + protocol.getCard().getManufacturer().getOfficialName());
//
//                    mNotifications.OnReadProgress(protocol, 30);
//                    if (isCancelled) return;
////
////                    if (mCard.getBlockchain() == Blockchain.Ethereum) {
////                        SignETH_TX(protocol);
////                    } else {
////                        SignBTC_TX(protocol);
////                    }
//
//                    CoinEngine engine = CoinEngineFactory.Create(mCard.getBlockchain());
//                    if (engine != null) {
//                        if (mCard.getPauseBeforePIN2() > 0) {
//                            mNotifications.OnReadWait(mCard.getPauseBeforePIN2());
//                        }
//
//                        byte[] tx;
////                        try {
//                        tx = engine.Sign(txFee, txAmount, txOutAddress, mCard, protocol);
////                        }
////                        finally {
////                            mNotifications.OnReadWait(0);
////                        }
//
//                        if (tx != null) {
//                            String txStr = BTCUtils.toHex(tx);
//                            if (mCard.getBlockchain() == Blockchain.Ethereum || mCard.getBlockchain() == Blockchain.EthereumTestNet || mCard.getBlockchain() == Blockchain.Token) {
//                                txStr = String.format("0x%s", txStr);
//                            }
//
//                            LastSignStorage.setLastTX(mCard.getWallet(), txStr);
//
//                            Intent intent = new Intent(getBaseContext(), SendTransactionActivity.class);
//                            intent.putExtra("UID", mCard.getUID());
//                            intent.putExtra("Card", mCard.getAsBundle());
//                            intent.putExtra("TX", txStr);
//                            startActivityForResult(intent, REQUEST_CODE_SEND_PAYMENT);
//                        }
//                    }
//                    mNotifications.OnReadProgress(protocol, 100);
//
//
//                    if (isCancelled) return;
//
//                } finally {
//                    mNfcManager.ignoreTag(mIsoDep.getTag());
//                }
//            } catch (CardProtocol.TangemException_InvalidPIN e) {
//                e.printStackTrace();
//                protocol.setError(e);
//            } catch (Exception e) {
//                e.printStackTrace();
//                protocol.setError(e);
//
//            } finally {
//                Log.i("SignPaymentTask", "[-- Finish sign payment --]");
//                mNotifications.OnReadFinish(protocol);
//            }
//        }
//
//        public void cancel(Boolean AllowInterrupt) {
//            try {
//                if (this.isAlive()) {
//                    isCancelled = true;
//                    join(500);
//                }
//                if (this.isAlive() && AllowInterrupt) {
//                    interrupt();
//                    mNotifications.OnReadCancel();
//                }
//            } catch (Exception e) {
//                e.printStackTrace();
//            }
//        }
//
//    }


    public void OnReadStart(CardProtocol cardProtocol) {
        progressBar.post(() -> {
            progressBar.setVisibility(View.VISIBLE);
            progressBar.setProgress(5);
        });
    }

    public void OnReadFinish(final CardProtocol cardProtocol) {

        signPaymentTask = null;

        if (cardProtocol != null) {
            if (cardProtocol.getError() == null) {
                progressBar.post(() -> {
                    progressBar.setProgress(100);
                    progressBar.setProgressTintList(ColorStateList.valueOf(Color.GREEN));
                });
            } else {
                lastReadSuccess = false;
                if (cardProtocol.getError().getClass().equals(CardProtocol.TangemException_InvalidPIN.class)) {
                    progressBar.post(() -> {
                        progressBar.setProgress(100);
                        progressBar.setProgressTintList(ColorStateList.valueOf(Color.RED));
                    });
                    progressBar.postDelayed(() -> {
                        try {
                            progressBar.setProgress(0);
                            progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
                            progressBar.setVisibility(View.INVISIBLE);
                            Intent intent = new Intent();
                            intent.putExtra("message", "Cannot sign transaction. Make sure you enter correct PIN2!");
                            intent.putExtra("UID", cardProtocol.getCard().getUID());
                            intent.putExtra("Card", cardProtocol.getCard().getAsBundle());
                            setResult(RESULT_INVALID_PIN, intent);
                            finish();
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }, 500);
                    return;
                } else {
                    progressBar.post(() -> {
                        if (cardProtocol.getError() instanceof CardProtocol.TangemException_ExtendedLengthNotSupported) {
                            if (!NoExtendedLengthSupportDialog.allreadyShowed) {
                                new NoExtendedLengthSupportDialog().show(getFragmentManager(), NoExtendedLengthSupportDialog.TAG);
                            }
                        } else {
                            Toast.makeText(getBaseContext(), R.string.try_to_scan_again, Toast.LENGTH_LONG).show();
                        }
                        progressBar.setProgress(100);
                        progressBar.setProgressTintList(ColorStateList.valueOf(Color.RED));
                    });

                }

            }
        }

        progressBar.postDelayed(() -> {
            try {
                progressBar.setProgress(0);
                progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
                progressBar.setVisibility(View.INVISIBLE);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }, 500);
    }

    public void OnReadProgress(CardProtocol protocol, final int progress) {
        progressBar.post(() -> progressBar.setProgress(progress));
    }

    public void OnReadCancel() {
        signPaymentTask = null;

        progressBar.postDelayed(() -> {
            try {
                progressBar.setProgress(0);
                progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
                progressBar.setVisibility(View.INVISIBLE);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }, 500);
    }

    @Override
    public void OnReadWait(final int msec) {
        WaitSecurityDelayDialog.OnReadWait(this, msec);
    }

    @Override
    public void OnReadBeforeRequest(int timeout) {
        WaitSecurityDelayDialog.onReadBeforeRequest(this, timeout);
    }

    @Override
    public void OnReadAfterRequest() {
        WaitSecurityDelayDialog.onReadAfterRequest(this);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                Intent intent = new Intent();
//                intent.putExtra("message", "Operation canceled");
                setResult(Activity.RESULT_CANCELED, intent);
                finish();
                return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE_SEND_PAYMENT) {
            setResult(resultCode, data);
            finish();
            return;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

}
\ No newline at end of file
+package com.tangem.presentation.activity;

import android.app.Activity;
import android.content.Intent;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.nfc.tech.IsoDep;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.tangem.data.nfc.SignPaymentTask;
import com.tangem.domain.cardReader.CardProtocol;
import com.tangem.domain.cardReader.NfcManager;
import com.tangem.domain.wallet.TangemCard;
import com.tangem.presentation.dialog.NoExtendedLengthSupportDialog;
import com.tangem.presentation.dialog.WaitSecurityDelayDialog;
import com.tangem.util.Util;
import com.tangem.wallet.BuildConfig;
import com.tangem.wallet.R;

public class SignPaymentActivity extends AppCompatActivity implements NfcAdapter.ReaderCallback, CardProtocol.Notifications {

    public static final String EXTRA_AMOUNT = "Amount";

    public static final int REQUEST_CODE_SEND_PAYMENT = 1;
    public static final int RESULT_INVALID_PIN = Activity.RESULT_FIRST_USER;
    private TangemCard mCard;
    private TextView tvCardID;
    private NfcManager mNfcManager;
    private static final String logTag = "SignPayment";
    private ProgressBar progressBar;
    private SignPaymentTask signPaymentTask;
    private String amountStr;
    private String feeStr;
    private String outAddressStr;
    private boolean lastReadSuccess = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sign_payment);

        MainActivity.commonInit(getApplicationContext());

        mCard = new TangemCard(getIntent().getStringExtra("UID"));
        mCard.LoadFromBundle(getIntent().getExtras().getBundle("Card"));
        amountStr = getIntent().getStringExtra(EXTRA_AMOUNT);
        feeStr = getIntent().getStringExtra("Fee");
        outAddressStr = getIntent().getStringExtra("Wallet");

        tvCardID = findViewById(R.id.tvCardID);
        tvCardID.setText(mCard.getCIDDescription());

        mNfcManager = new NfcManager(this, this);

        progressBar = findViewById(R.id.progressBar);
        progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
        progressBar.setVisibility(View.INVISIBLE);

        if (BuildConfig.DEBUG)
            Toast.makeText(this, amountStr, Toast.LENGTH_LONG).show();
    }

    @Override
    public void onTagDiscovered(Tag tag) {
        try {
            // get IsoDep handle and run cardReader thread
            final IsoDep isoDep = IsoDep.get(tag);
            if (isoDep == null) {
                throw new CardProtocol.TangemException(getString(R.string.wrong_tag_err));
            }
            byte UID[] = tag.getId();
            String sUID = Util.byteArrayToHexString(UID);
            Log.v(logTag, "UID: " + sUID);

            if (sUID.equals(mCard.getUID())) {
                if (lastReadSuccess) {
                    isoDep.setTimeout(mCard.getPauseBeforePIN2() + 5000);
                } else {
                    isoDep.setTimeout(mCard.getPauseBeforePIN2() + 65000);
                }
                signPaymentTask = new SignPaymentTask(this, mCard, mNfcManager, isoDep, this, amountStr, feeStr, outAddressStr);
                signPaymentTask.start();
            } else {
                Log.d(logTag, "Mismatch card UID (" + sUID + " instead of " + mCard.getUID() + ")");
                mNfcManager.ignoreTag(isoDep.getTag());
                return;
            }

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    @Override
    public void onResume() {
        super.onResume();
        mNfcManager.onResume();
    }

    @Override
    public void onPause() {
        mNfcManager.onPause();
        if (signPaymentTask != null) {
            signPaymentTask.cancel(true);
        }
        super.onPause();
    }

    @Override
    public void onStop() {
        // dismiss enable NFC dialog
        mNfcManager.onStop();
        if (signPaymentTask != null) {
            signPaymentTask.cancel(true);
        }
        super.onStop();
    }

    public void OnReadStart(CardProtocol cardProtocol) {
        progressBar.post(() -> {
            progressBar.setVisibility(View.VISIBLE);
            progressBar.setProgress(5);
        });
    }

    public void OnReadFinish(final CardProtocol cardProtocol) {

        signPaymentTask = null;

        if (cardProtocol != null) {
            if (cardProtocol.getError() == null) {
                progressBar.post(() -> {
                    progressBar.setProgress(100);
                    progressBar.setProgressTintList(ColorStateList.valueOf(Color.GREEN));
                });
            } else {
                lastReadSuccess = false;
                if (cardProtocol.getError().getClass().equals(CardProtocol.TangemException_InvalidPIN.class)) {
                    progressBar.post(() -> {
                        progressBar.setProgress(100);
                        progressBar.setProgressTintList(ColorStateList.valueOf(Color.RED));
                    });
                    progressBar.postDelayed(() -> {
                        try {
                            progressBar.setProgress(0);
                            progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
                            progressBar.setVisibility(View.INVISIBLE);
                            Intent intent = new Intent();
                            intent.putExtra("message", "Cannot sign transaction. Make sure you enter correct PIN2!");
                            intent.putExtra("UID", cardProtocol.getCard().getUID());
                            intent.putExtra("Card", cardProtocol.getCard().getAsBundle());
                            setResult(RESULT_INVALID_PIN, intent);
                            finish();
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }, 500);
                    return;
                } else {
                    progressBar.post(() -> {
                        if (cardProtocol.getError() instanceof CardProtocol.TangemException_ExtendedLengthNotSupported) {
                            if (!NoExtendedLengthSupportDialog.allreadyShowed) {
                                new NoExtendedLengthSupportDialog().show(getFragmentManager(), NoExtendedLengthSupportDialog.TAG);
                            }
                        } else {
                            Toast.makeText(getBaseContext(), R.string.try_to_scan_again, Toast.LENGTH_LONG).show();
                        }
                        progressBar.setProgress(100);
                        progressBar.setProgressTintList(ColorStateList.valueOf(Color.RED));
                    });

                }

            }
        }

        progressBar.postDelayed(() -> {
            try {
                progressBar.setProgress(0);
                progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
                progressBar.setVisibility(View.INVISIBLE);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }, 500);
    }

    public void OnReadProgress(CardProtocol protocol, final int progress) {
        progressBar.post(() -> progressBar.setProgress(progress));
    }

    public void OnReadCancel() {
        signPaymentTask = null;

        progressBar.postDelayed(() -> {
            try {
                progressBar.setProgress(0);
                progressBar.setProgressTintList(ColorStateList.valueOf(Color.DKGRAY));
                progressBar.setVisibility(View.INVISIBLE);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }, 500);
    }

    @Override
    public void OnReadWait(final int msec) {
        WaitSecurityDelayDialog.OnReadWait(this, msec);
    }

    @Override
    public void OnReadBeforeRequest(int timeout) {
        WaitSecurityDelayDialog.onReadBeforeRequest(this, timeout);
    }

    @Override
    public void OnReadAfterRequest() {
        WaitSecurityDelayDialog.onReadAfterRequest(this);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                Intent intent = new Intent();
//                intent.putExtra("message", "Operation canceled");
                setResult(Activity.RESULT_CANCELED, intent);
                finish();
                return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE_SEND_PAYMENT) {
            setResult(resultCode, data);
            finish();
            return;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

}
\ No newline at end of file