toast for wrong password

app/src/main/java/com/utsmm/kbz/ui/core_ui/EmvTransactionFragment.java

@@ -3,6 +3,7 @@ package com.utsmm.kbz.ui.core_ui;
 import android.os.Bundle;
 import android.text.TextUtils;
 import android.view.View;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -158,6 +159,7 @@ public class EmvTransactionFragment extends DataBindingFragment {
         }
 
         observeEmvResultStatus();
+        observePinWarning();
     }
 
     private boolean isNotManualTransaction() {
@@ -349,6 +351,15 @@ public class EmvTransactionFragment extends DataBindingFragment {
         });
     }
 
+    private void observePinWarning() {
+        emvTransactionViewModel.pinRemainingCount.observe(getViewLifecycleOwner(), msg -> {
+            if (!TextUtils.isEmpty(msg)) {
+                Toast.makeText(requireContext(), msg, Toast.LENGTH_SHORT).show();
+                emvTransactionViewModel.pinRemainingCount.setValue("");
+            }
+        });
+    }
+
     private void observeEmvErrorCode() {
         dismissLoadingDialog();
         emvTransactionViewModel.errorCodeMsg.observe(getViewLifecycleOwner(), pair -> {

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

@@ -120,16 +120,17 @@
 
                 <TextView
                     android:id="@+id/txt_emv_remaining_count"
-                    android:layout_width="wrap_content"
+                    android:layout_width="0dp"
                     android:layout_height="wrap_content"
                     android:layout_marginTop="@dimen/margin_button"
                     android:fontFamily="@font/rubik_regular"
+                    android:gravity="center"
                     android:text="@{emv.pinRemainingCount}"
                     android:textColor="@color/white"
                     android:textSize="@dimen/pan_size"
                     app:layout_constraintEnd_toEndOf="parent"
-                    app:layout_constraintStart_toEndOf="@+id/textView3"
+                    app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@+id/textView20"
+                    app:layout_constraintTop_toBottomOf="@+id/txt_emv_pin_mode"
                     app:layout_goneMarginTop="@dimen/margin_button"
                     tools:text="3 LEFT" />
             </androidx.constraintlayout.widget.ConstraintLayout>

baselib/src/main/java/com/utsmyanmar/baselib/viewModel/EmvBaseViewModel.java

@@ -1,5 +1,6 @@
 package com.utsmyanmar.baselib.viewModel;
 
+import android.app.AlertDialog;
 import android.graphics.Rect;
 import android.os.Handler;
 import android.os.Looper;
@@ -8,6 +9,7 @@ import android.os.RemoteException;
 import android.util.Log;
 import android.view.View;
 import android.view.ViewTreeObserver;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.lifecycle.MutableLiveData;
@@ -106,6 +108,7 @@ public abstract class  EmvBaseViewModel extends BaseViewModel {
     public MutableLiveData<Integer> pinPadVisibility = new MutableLiveData<>(8);
 
     protected int pinEnterCount;
+    private int offlinePinIncorrectPromptCount;
     public CustomPinPadKeyboard customPinPadKeyboard;
 
     private int mWidth = 239;                       // Single item width of password keyboard
@@ -636,6 +639,9 @@ public abstract class  EmvBaseViewModel extends BaseViewModel {
         public void onCardHolderInputPin(boolean isOnlinePin, int leftTimes) {
             LogUtil.d(TAG, "onCardHolderInputPin isOnlinePin = " + isOnlinePin);
             LogUtil.d(TAG, "onCardHolderInputPin leftTimes = " + leftTimes);
+            if (isOnlinePin) {
+                pinRemainingCount.postValue("");
+            }
 //            startPinProcess(isOnlinePin ? 1 : 0);
             mProcessStep = EMV_SHOW_PIN_PAD;
 //            mHandler.obtainMessage(EMV_SHOW_PIN_PAD, isOnlinePin ? 1 : 0).sendToTarget();
@@ -675,7 +681,13 @@ public abstract class  EmvBaseViewModel extends BaseViewModel {
         public void onPrompt(PromptEnum promptEnum) {
             LogUtil.d(TAG, "onPrompt->" + promptEnum);
             if( promptEnum == PromptEnum.OFFLINE_PIN_INCORRECT_TRY_AGAIN) {
+                offlinePinIncorrectPromptCount++;
+                pinEnterCount = 0;
+                pinText.postValue("");
+                int attemptLeft = Math.max(0, 3 - offlinePinIncorrectPromptCount);
+                pinRemainingCount.postValue("Please try again!\n" + attemptLeft + " attempt left!");
                 emvHandler.onSetPromptResponse(false);
+
             } else {
                 emvHandler.onSetPromptResponse(true);
             }
@@ -902,6 +914,7 @@ public abstract class  EmvBaseViewModel extends BaseViewModel {
         emvCardType.postValue("");
         pinText.setValue("");
         pinEnterCount = 0;
+        offlinePinIncorrectPromptCount = 0;
     }
 
     protected void getCardInfo() {