unable to integrate Razorpay in Fragment

[Mustangodhra]

and i am getting error like : Error: onPaymentError probably not implemented in your activity . so , guide me how to solve it.

@52280 Implement the PaymentResultListener or PaymentResultWithDataListener(which I have done in the example) in the parent activity and notify the fragment about the event using a ViewModel See : https://developer.android.com/guide/fragments/communicate#viewmodel

Create a ViewModel called SharedViewModel like:

public class SharedViewModel extends ViewModel {
    private final MutableLiveData<Boolean> onSuccess = new MutableLiveData<>();
    private final MutableLiveData<Boolean> onError = new MutableLiveData<>();

    private PaymentError paymentError;
    private PaymentSuccess paymentSuccess;

    public LiveData<Boolean> getOnSuccess() {
        return onSuccess;
    }

    public LiveData<Boolean> getOnError() {
        return onError;
    }

    public void setOnSuccess(Boolean b) {
        onSuccess.setValue(b);
    }

    public void setOnError(Boolean b) {
        onError.setValue(b);
    }

    public PaymentError getPaymentError() {
        return paymentError;
    }

    public void setPaymentError(PaymentError paymentError) {
        this.paymentError = paymentError;
    }

    public PaymentSuccess getPaymentSuccess() {
        return paymentSuccess;
    }

    public void setPaymentSuccess(PaymentSuccess paymentSuccess) {
        this.paymentSuccess = paymentSuccess;
    }
}

Now in your activity do this:

private SharedViewModel sharedViewModel;

@Override
protected void onCreate(Bundle savedInstanceState) {
    ...
    ...

    sharedViewModel = new ViewModelProvider(this).get(SharedViewModel.class);
    sharedViewModel.setOnSuccess(false);
    sharedViewModel.setOnError(false);

    ...
    ...
}

@Override
public void onPaymentSuccess(String razorpayPaymentId, PaymentData paymentData) {
    PaymentSuccess paymentSuccess = new PaymentSuccess(razorpayPaymentId, paymentData);

    sharedViewModel.setPaymentSuccess(paymentSuccess);
    sharedViewModel.setOnSuccess(true);
}

@Override
public void onPaymentError(int code, String description, PaymentData paymentData) {
    PaymentError paymentError = new PaymentError(code, description, paymentData);

    sharedViewModel.setPaymentError(paymentError);
    sharedViewModel.setOnError(true);
}

In the fragment do this without implementing the listener in it:

private SharedViewModel sharedViewModel;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    ..
    ..

    Checkout.preload(getContext());

    sharedViewModel = new ViewModelProvider(requireActivity()).get(SharedViewModel.class);

    sharedViewModel.getOnSuccess().observe(getViewLifecycleOwner(), onSuccess -> {
        if (onSuccess) {
            PaymentSuccess success = sharedViewModel.getPaymentSuccess();

            onPaymentSuccess(success.getRazorpayPaymentId(), success.getPaymentData());
        }
    });

    sharedViewModel.getOnError().observe(getViewLifecycleOwner(), onError -> {
        if (onError) {
            PaymentError error = sharedViewModel.getPaymentError();

            onPaymentError(error.getCode(), error.getDescription(), error.getPaymentData());
        }
    });

    ..
    ..
}

public void onPaymentSuccess(String razorpayPaymentId, PaymentData paymentData) {
    sharedViewModel.setOnSuccess(false);
    Checkout.clearUserData(getContext());

    // Do something
}

public void onPaymentError(int code, String description, PaymentData paymentData) {
    sharedViewModel.setOnError(false);
    Checkout.clearUserData(getContext());

    // Do something
}

The classes PaymentError and PaymentSuccess are :

public class PaymentSuccess {
    private String razorpayPaymentId;
    private PaymentData paymentData;

    public PaymentSuccess(String razorpayPaymentId, PaymentData paymentData) {
        this.razorpayPaymentId = razorpayPaymentId;
        this.paymentData = paymentData;
    }

    public String getRazorpayPaymentId() {
        return razorpayPaymentId;
    }

    public PaymentData getPaymentData() {
        return paymentData;
    }
}

public class PaymentError {
    private int code;
    private String description;
    private PaymentData paymentData;

    public PaymentError(int code, String description, PaymentData paymentData) {
        this.code = code;
        this.description = description;
        this.paymentData = paymentData;
    }

    public int getCode() {
        return code;
    }

    public String getDescription() {
        return description;
    }

    public PaymentData getPaymentData() {
        return paymentData;
    }
}

I tried this code but i am getting an error which shows:

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.saiftechnology.eventpool, PID: 15810 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.saiftechnology.eventpool/com.saiftechnology.eventpool.student.studentAccount}: java.lang.RuntimeException: Cannot create an instance of class com.saiftechnology.eventpool.student.eventDetailsFragment$SharedViewModel at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3311) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3460) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2047) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:224) at android.app.ActivityThread.main(ActivityThread.java:7590) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950) Caused by: java.lang.RuntimeException: Cannot create an instance of class com.saiftechnology.eventpool.student.eventDetailsFragment$SharedViewModel at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.java:221) at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.java:278) at androidx.lifecycle.SavedStateViewModelFactory.create(SavedStateViewModelFactory.java:112) at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:185) at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:150) at com.saiftechnology.eventpool.student.studentAccount.onCreate(studentAccount.java:40) at android.app.Activity.performCreate(Activity.java:7893) at android.app.Activity.performCreate(Activity.java:7880) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3286) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3460)  at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)  at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)  at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2047)  at android.os.Handler.dispatchMessage(Handler.java:107)  at android.os.Looper.loop(Looper.java:224)  at android.app.ActivityThread.main(ActivityThread.java:7590)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)  Caused by: java.lang.InstantiationException: java.lang.Class<com.saiftechnology.eventpool.student.eventDetailsFragment$SharedViewModel> has no zero argument constructor at java.lang.Class.newInstance(Native Method) at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.java:219) at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.java:278)  at androidx.lifecycle.SavedStateViewModelFactory.create(SavedStateViewModelFactory.java:112)  at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:185)  at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:150)  at com.saiftechnology.eventpool.student.studentAccount.onCreate(studentAccount.java:40)  at android.app.Activity.performCreate(Activity.java:7893)  at android.app.Activity.performCreate(Activity.java:7880)  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3286)  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3460)  at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)  at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)  at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2047)  at android.os.Handler.dispatchMessage(Handler.java:107)  at android.os.Looper.loop(Looper.java:224)  at android.app.ActivityThread.main(ActivityThread.java:7590)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)  I/ology.eventpoo: ProcessProfilingInfo new_methods=2208 is saved saved_to_disk=1 resolve_classes_delay=8000

the code which is pointed in the error (studentAccount.java:40) is: sharedViewModel = new ViewModelProvider(this).get(eventDetailsFragment.SharedViewModel.class);

Appreciate your help.

Originally posted by @Mustangodhra in https://github.com/razorpay/razorpay-android-sample-app/issues/9#issuecomment-800784522

[vivekshindhe]

@Mustangodhra Two points,

• The logs that you have shared with us, don't really give many contexts as to how this would be caused because of the SDK.
• The ViewModel class is a great idea to use. But, you'll need to implement PaymentResultWithDataListener in the activity and then pass on the values to your fragment.

Let us know if you need any more clarification on the same.

[sumedht]

@Mustangodhra Closing this issue as there is no further communication on this. U can always re-open if u still facing this issue.

[rahulsharma0657]

You can try to implement the razor pay in activity and then get the call back in the fragment.