android: Problem in BrainTree Drop In SDK for Android

@jibon57 that is due to the fact that the method signature requires a primitive boolean type instead of the java.lang.Boolean object. I can’t explain the reasoning behind that, it’s Braintree’s code.

Now, in Java you would go about simply writing boolean.class, but that is not valid in NativeScript since the primitive Java types have no corresponding representation in JavaScript.

There is one thing that I can think of that you could try, although you could say it’s a very dirty hack. Consider implementing the code of interest in Java, or wait for the metadata generator fix, and replace the bad code with the proper JavaScript calls.

Here’s the hack explained: So we need to get a hold of what boolean.class would normally return in Java, since we can’t call it directly in JavaScript. In that case we can think of a method/field whose return type is the type that is of interest to us, and get it using reflection, which we will then pass to the getMethod call, in order to properly get the method that Java’s reflection originally failed finding.

In Braintree’s API I found the isAndroidPayEnabled method on the DropInRequestClass, and its return type is boolean, so it will have to do.

First we get the method using reflection, then we get the method’s return type, which we will then be able to use.

let isAndroidPayEnabled = dropInRequest.getClass().getMethod("isAndroidPayEnabled", []);
let booleanType = isAndroidPayEnabled.getReturnType();
let collectDeviceDataMethod = dropInRequest.getClass().getMethod("collectDeviceData", [booleanType]);
collectDeviceDataMethod.invoke(dropInRequest, [true]);

I have not tested the code.

@jibon57 this is what the above would look like using reflection as a workaround to call the missing methods:

let activity = app.android.foregroundActivity;
let dropInRequest = new com.braintreepayments.api.dropin.DropInRequest();
let token = "placeholder";

let clientTokenMethod = dropInRequest.getClass().getMethod("clientToken", [java.lang.String.class]); // method signature is dropInRequest.clientToken(java.lang.String). Pass class objects in an array. 

// do exception handling

// call clientToken on the DropInRequest instance with the token parameter
// pass all method parameters as an array object
clientTokenMethod.invoke(dropInRequest, [token]);

// Similarly, find the getIntent method with reflection, and invoke it on the dropInRequest object.
let getIntentMethod = dropInRequest.getClass().getMethod("getIntent", [android.content.Context.class]);

let dIRIntent = getIntentMethod.invoke(dropInRequest, [activity]);

app.android.foregroundActivity.startActivityForResult(dIRIntent, '4949');

Hope that’s enough to help you make the other calls with reflection. Refer to this simple answer on Java reflection to see how it’s normally done in Java - https://stackoverflow.com/questions/160970/how-do-i-invoke-a-java-method-when-given-the-method-name-as-a-string

Closing the issue in favor of #832, where the problem is described in detail.

@chauhan-saurabh please post issue-related questions in the respective plugin’s repository.

As for the logs that you are seeing - they are mere warnings issued by Google’s Chrome (the embedded browser on your mobile), and are safe to ignore, as they are not related neither to the plugin, nor to NativeScript. The reason you are seeing them is because of the webview that is supposedly being open when working with the Braintree sdk.

@jibon57 - pay close attention to the plugin documentation. You are lucky its thorough at least 😛

https://developers.braintreepayments.com/guides/client-sdk/setup/android/v2#browser-switch-setup -> Note: The scheme you define must use all lowercase letters.

@jibon57 thanks for the log. I created an issue outlining the possible solutions we could implement to reduce the cases when problems like yours could happen.

For the time being you could call to DropInRequest’s methods using Java reflection. Let me know if you need help with the implementation.

@Pip3r4o Thanks for reply. Yes, I think so:

:buildMetadata
Skip com.braintreepayments.api.AndroidPay
	Error: java.lang.NullPointerException
Skip com.braintreepayments.api.AndroidPayActivity
	Error: java.lang.NullPointerException
Skip com.braintreepayments.api.BraintreeFragment
	Error: java.lang.NullPointerException
Skip com.braintreepayments.api.VisaCheckout
	Error: java.lang.NullPointerException
Skip com.braintreepayments.api.dropin.DropInRequest
	Error: java.lang.NullPointerException
Skip com.braintreepayments.api.interfaces.TokenizationParametersListener
	Error: java.lang.NullPointerException
Skip com.braintreepayments.api.models.AndroidPayCardNonce
	Error: java.lang.NullPointerException
Skip com.braintreepayments.api.models.VisaCheckoutBuilder
	Error: java.lang.NullPointerException

I have attached the full log log.txt

But I was following instruction from here: https://github.com/braintree/braintree-android-drop-in

build.gradle:

dependencies {
    compile 'com.braintreepayments.api:braintree:2.6.0'
   compile 'com.braintreepayments.api:drop-in:3.+'
}