FirebaseUI-Android | Optimized UI components for Firebase | Authentication library

Lack of proper documentation on gradle method resConfigs made me ask this question.

• In this example, google gives a specific example of how to use it with Languages.
• In this example, google mixed Languages and Drawables
• I was unable to find any javadoc like gradle doc for the same

If I specify something in front of resConfigs, only that gets included in the final build, everything else does not get bundled into the apk.

The test app has

• Multiple languages (values-en , values-fr, ...)
• Multiple drawable folders (drawable-xxhdpi, drawable-xxxhdpi, ...)
• Multiple android versions (values-v21 , values-v7, ...)
• Multiple smallest widths(sw800, sw1000, ...)
• Multiple orientations (port,land)
• etc

Note: I used android studios' apk analyzer to deduce the following results. before every test, full clean, rebuild, and prod build was generated with proguard(shrink) enabled.

Test 1: I specified only languages resConfigs="en", "fr"

Result 1: In the apk,

• all languages vanished except en and fr
• all other resources were present (drawables, dimens, sw, orientation ...)

Test 2: I specified only drawables resConfigs="xxhdpi"

Result 2: In the apk,

• all languages were present
• all other resources were present (dimens, sw, orientation ...)
• all drawables vanished except xxhdpi. (all other drawable folders were present, but had 0 byte files)

Test 3: I specified languages and drawable resConfigs="en","fr","xxhdpi"

Result 3: In the apk,

• all languages vanished except en and fr
• all other resources were present (dimens, sw, orientation ...)
• all drawables vanished except xxhdpi.

1. When I only specify languages resConfigs="en", "fr", why are other resources getting bundled into the apk (for eg: drawables)
2. Similary, when I only specify resConfigs="xxhdpi" , why languages and other resources get bundled
3. In case of gradle is using some intelligence to figure out what to exclude and what not to exclude, does there exist a list of group of resources which fall under same category, is there any documentation on it?
   For eg
   • Language is a group, if gradle finds at least one language tag, it excludes all other languages. otherwise, includes all languages?
   • Drawable is a group, if gradle finds at least one drawable tag, it excludes all other drawables. otherwise, includes all drawables?

1. resConfigs only worked for me on app level gradle only. When I tried to use it on a dependent module, it ignored it completely. How to make it work on a dependent module. (I was trying to integrate firebaseUI for auth)
2. is resConfigs in early stages of development, or is it meant only for development purposes, and not to be used in prod setups?

I'm trying to implement Firebase UI with Glide, I followed the guides here and here, and I got this strange error:

I'm using FirebaseUI-Android to authenticate using Microsoft and Apple.

I choose either one of the Sign In options and a custom Chrome tab opens with the provider's authentication flow. After successfully signing in using the provider, the authentication screen is re-displayed, with a dark overlay. Pressing once dismisses the dark overlay. The top-left close button must also be pressed in order to return to my app onActivityResult is then called and sign in completes successfully

I would like to eliminate the need to dismiss the dark overlay and press the close button.

This happens with both the Microsoft auth flow and the Apple auth flow.

Here's demonstration of the behaviour: https://giphy.com/gifs/iEuTTe8ud85EpsXCpH/fullscreen

I know this is a discussed topic, but here I am, after all other solutions I've found did not solve my problem. I saved multiple images in Firebase Storage and now I want to get one of them and put it into an ImageView on an AlertDialog (or another Activity).

I've read about Glide solution, but it doesn't work for me. Gilde:

Using Firebase UI for sign-in and sign-up, how do I remove the option for a user to sign-up with a first & last name? In other words, only their email and password are required.

According to this github issue, the feature to do so has been implemented.

Firebase provided Kotlin code for sign-in/sign-up:

I have read about this issue in multiple places such as here but do not know what user experience to give users.

I'm using Firebase Auth on iOS (Swift). In my app, there are only 2 ways for users to create an account:

1. Email (email/password)
2. Sign In with Apple

I'm not sure how to handle this scenario where Apple replaces the email provider in Firebase:

1. User signs up with option #1 (Email) as john@gmail.com. We use the api send email verification to send an email for user to verify their email.
2. This user does not open email to verify their email for some reason. Therefore, the email is not verified.
3. User logs out of the app.
4. Instead of the user logging in with option #1 (Email), the user logs in with option #2 (Sign In with Apple). Their Apple ID email is the same as option #1 (Email): john@gmail.com. We use the API sign in with credential.

In this flow, Apple replaces the email provider because both their regular email and Apple ID email are the same (and the regular email was not verified). If the email is verified, Firebase links the email and Apple account automatically in this case... instead of replacing.

If you try to create an account with option #1 (Email) again later you'll get this error because it is already used with Apple:

Base on guideline at https://github.com/firebase/FirebaseUI-Android/tree/master/firestore, I make a list items with FirestoreRecyclerAdapter but I don't know why the couldn't retrieve any data. In fact, the number view items are shown correctly, but the content always null. Anyone can help me. Below is source code:

Activity: