public-static | Programmer 's approach to web content management | Frontend Framework library

I am trying to use Google Nearby Connections API to connect two Android devices to exchange data but no success. The devices can found eachother none of them can connect to the other. It always fails at onConnectionInitiated() with STATUS_ENDPOINT_UNKNOWN when I try to accept the connection.

I tried it with Strategy.P2P_POINT_TO_POINT Strategy.CLUSTER and Strategy.STAR but I get the same result.

Anyone can help me what do I miss?

Both devices are physical and running on Android 9.0

This is the code:

Firebase gives you the ability to add the Firebase Admin SDK to your server:

This is regarding a migration from Firebase client version 6 to 7.

In the past, we called .getException().getErrorCode() on an instance of com.google.firebase.messaging.SendResponse.

We handled two cases specifically, "registration-token-not-registered" and "mismatched-credential".

Since version 7, there are two different error codes that can be retrieved, one with .getException().getErrorCode() (returning an generic ErrorCode) and .getException.getMessagingErrorCode() (returning a more fitting MessagingErrorCode).

The migration guide to version 7 clearly shows that the first case of "registration-token-not-registered" can now be handled with .getException.getMessagingErrorCode() and matching against MessagingErrorCode.UNREGISTERED, but the case of "mismatched-credential" (and all other possible errors) isn't documented anywhere.

The best thing I could find is the documentation of the enum.

But I am not sure if

The credential used to authenticate this SDK does not have permission to send messages to the device corresponding to the provided registration token

(from the Admin Error codes documentation) and

The authenticated sender ID is different from the sender ID for the registration token.

(from the documentation of the enum MessagingErrorCode.SENDER_ID_MISMATCH) means the same...

My question is twofold:

• Is there a nice way to relate MessagingErrorCodes to the actual Admin error codes?
• Is the MessagingErrorCode.SENDER_ID_MISMATCH the right error code for "mismatched-credential"?

I would like to pass along an array of bundles to FirebaseAnalytics as described here but FirebaseAnalytics.Param does not contain an ITEMS value. In fact, it only seems to contain a subset of the values it should contain as shown here:

I have firebaseanalytics version 17.4.4 and I tried to fill in the Param.ITEMS constant value myself ("items" according to the docs) but DebugView shows a firebase error (20 - Event array parameter name is invalid). All other events and parameters seem to work just fine according to DebugView and I found nobody with similar problems. Does anyone have any ideas as to why I only see a subset of the parameters?

I'm getting the the Developer (Code:10, message:10:) error when trying to sign in using Google Sign-in while using FirebaseUI's Authentication. All works well on development, but when I sign my bundle using my upload key and then run it on a device, it fails.

I looked at associated questions here, here and here and the answers didn't help. As you'll see below, I've tried their recommendations.

What I've tried:

• Add SHA1 fingerprints to the Project Settings at the Firebase Console for debug, release (upload), and Google Play keys.
• At console.developers.google.com, created OAuth clients for Android for each of the 3 keys.
• Still at console.developers.google.com created a new Web client which I then took the Client ID and secret and put it under Firebase's authentication / Google sign in method's Web SDK configuration.
• Tried all the steps here, here, here, and here
• Double-checked that my build is actually signed by the correct key (the upload/deploy key)
• Made sure my google-services.json is the latest with all fingerprints present

My app-level build.gradle file contains the following:

I want to sort the constructor params here. I am using TSLINT with Angular9 right now. IS there any rule which can be used such as member-ordering.

Android has an interface, Parcelable, which somehow forces implementing classes to have a public static CREATOR field.

From the documentation of the interface:

Classes implementing the Parcelable interface must also have a non-null static field called CREATOR of a type that implements the Parcelable.Creator interface.

There are two parts to my question:

1) How does this interface force implementing classes to have this static CREATOR field? How can I do this in my own Java interfaces? I cannot see how this works from Parcelable's source code.

For example: If I had an interface Car, and I wanted each implementing class to have a public static String MANUFACTURER. Can this be done in a similar manner to Parcelable's CREATOR field? I can of course add a getManufacturer() method to the interface, but I'm curious as to how the Parcelable forces the static field.

2) Following on from 1, how does Android access this field? With an interface method you could do something like:

I am making an android application, trying to log in a site with POST requests. The problem is site is not mine and it has ReCaptcha on login form.

I tried implementing android SafetyNet API, made a verify request using the site's own site-key but normally, the site ReCaptcha key type is not set to 'reCaptcha Android' and thus it returns the error RECAPTCHA_INVALID_KEYTYPE so I can't verify myself using android SafetyNet API.

I was wondering if there is any other way to verify the captcha site serves.

This SO question is similar, but I do not see the answer which would satisfy me.

So, how does the equivalent of public static readonly string Name = ...; look in F#?

I can define static member Name = ..., but this creates static readonly property.