fix

app/src/main/java/com/yono/messeripos/MainActivity.java

 package com.yono.messeripos;
 
+import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
 import android.util.Log;
@@ -37,6 +38,7 @@ public class MainActivity extends AppCompatActivity {
                 int id = item.getItemId();
 
                 if (id == R.id.menu_cart){
+                    startActivity(new Intent(getApplicationContext(), PaymentActivity.class));
                     Toast.makeText(MainActivity.this, "Pesan cart", Toast.LENGTH_LONG).show();
                 }
                 return true;

app/src/main/java/com/yono/messeripos/PaymentAdapter.java

@@ -13,10 +13,13 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.cardview.widget.CardView;
+import androidx.databinding.DataBindingComponent;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.request.RequestOptions;
+import com.google.android.material.button.MaterialButton;
+import com.yono.messeripos.databinding.PaymentListBinding;
 
 import java.util.ArrayList;
 
@@ -34,10 +37,12 @@ public class PaymentAdapter extends RecyclerView.Adapter<PaymentAdapter.ViewHold
     @NonNull
     @Override
     public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        View view = LayoutInflater.from(parent.getContext())
-                .inflate(R.layout.payment_list, parent, false);
+        PaymentListBinding paymentListBinding =
 
-        return new ViewHolder(view);
+//        View view = LayoutInflater.from(parent.getContext())
+//                .inflate(R.layout.payment_list, parent, false);
+//
+//        return new ViewHolder(view);
     }
 
     @Override
@@ -45,6 +50,7 @@ public class PaymentAdapter extends RecyclerView.Adapter<PaymentAdapter.ViewHold
         holder.cardView.setTag(position);
         holder.radioButton.setChecked(position == getPosition);
         final PaymentModel paymentModel = paymentModels.get(position);
+        holder.btnPay.setEnabled(false);
 
         ImageView imageView = holder.logoComp;
 
@@ -83,7 +89,7 @@ public class PaymentAdapter extends RecyclerView.Adapter<PaymentAdapter.ViewHold
                     getPosition = getAdapterPosition();
                     notifyDataSetChanged();
                     if (getPosition == Integer.parseInt(cardView.getTag().toString())) radioButton.setChecked(true); else radioButton.setChecked(false);
-
+                    btnPay.setEnabled(true);
                 }
             });
         }