Problem with integrate Strip in Android Studio - android-studio

Question

java.lang.NullPointerException: Parameter specified as non-null is
null: method kotlin.jvm.internal.Intrinsics.checkNotNullParameter,
parameter id
at com.stripe.android.paymentsheet.PaymentSheet$CustomerConfiguration.(PaymentSheet.kt)
at com.abdullahalzazai.welcome2.MainActivity2.paymentFlow(MainActivity2.java:102)
at com.abdullahalzazai.welcome2.MainActivity2.access$000(MainActivity2.java:29)
at com.abdullahalzazai.welcome2.MainActivity2$1.onClick(MainActivity2.java:57)
at android.view.View.performClick(View.java:5637)
public class MainActivity2 extends AppCompatActivity {
Button payment;
String PublishableKey ="pk_test_51MWOxeHw41kgZTMnEfStv1DZsXRvXAQk3RrZrv7tH3U8KHzGhvpNJsyrri7SQpY9nOvyeLIbTfTVa1tK7nh5egfu00A0dBYpw9";
String SecretKey="sk_test_51MWOxeHw41kgZTMnhE1cH6j3eo9SaiSCz1bO2JdI5A0T3392jHFHMhexotB8MslRlHwOGoEDqtsKnY5opU3kLTxB00XBmE2Dox";
String CustomerId;
String EphericalKey;
String ClientSecret;
PaymentSheet paymentSheet;
#SuppressLint("MissingInflatedId")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
payment= findViewById(R.id.payment);
PaymentConfiguration.init(this,PublishableKey);
paymentSheet = new PaymentSheet(this,paymentSheetResult -> {
onPaymentresult(paymentSheetResult);
});
payment.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
paymentFlow();
}
});
StringRequest request = new StringRequest(Request.Method.POST, "https://api.stripe.com/v1/customers ",
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject object = new JSONObject(response);
CustomerId = object.getString("id");
Toast.makeText(MainActivity2.this,CustomerId,Toast.LENGTH_SHORT).show();
getEmphericalKey();
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity2.this,error.getLocalizedMessage(),Toast.LENGTH_SHORT).show();
}
}){
#Nullable
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> header = new HashMap<>();
header.put("Authorization","Bearer"+SecretKey);
return header;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(request);
}
private void paymentFlow() {
paymentSheet.presentWithPaymentIntent(ClientSecret,new PaymentSheet.Configuration("Learn with Arvind",new PaymentSheet.CustomerConfiguration(
CustomerId,
EphericalKey
)));
}
private void onPaymentresult(PaymentSheetResult paymentSheetResult) {
if (paymentSheetResult instanceof PaymentSheetResult.Completed){
Toast.makeText(this,"payment success",Toast.LENGTH_SHORT).show();
}
}
private void getEmphericalKey() {
StringRequest request = new StringRequest(Request.Method.POST, "https://api.stripe.com/v1/ephemeral_keys",
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject object = new JSONObject(response);
EphericalKey = object.getString("id");
Toast.makeText(MainActivity2.this,CustomerId,Toast.LENGTH_SHORT).show();
getClintSecret(CustomerId,EphericalKey);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity2.this,error.getLocalizedMessage(),Toast.LENGTH_SHORT).show();
}
}){
#Nullable
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> header = new HashMap<>();
header.put("Authorization","Bearer"+SecretKey);
header.put("Stripe-Version","2022-08-01");
return header;
}
#Nullable
#Override
protected Map<String, String> getPostParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("customer",CustomerId);
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(request);
}
private void getClintSecret(String customerId, String ephericalKey) {
StringRequest request = new StringRequest(Request.Method.POST, " https://api.stripe.com/v1/payment_intents",
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject object = new JSONObject(response);
ClientSecret=object.getString("client_secret");
Toast.makeText(MainActivity2.this,ClientSecret,Toast.LENGTH_SHORT).show();
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity2.this,error.getLocalizedMessage(),Toast.LENGTH_SHORT).show();
}
}){
#Nullable
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> header = new HashMap<>();
header.put("Authorization","Bearer"+SecretKey);
return header;
}
#Nullable
#Override
protected Map<String, String> getPostParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("customer",CustomerId);
params.put("amount","100"+"00");
params.put("currency_payment_methods[enabled]","true");
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(request);
}
}`