CameraFragment | A simple easy-to-integrate Camera Fragment for Android | Camera library

I'm new to Android Studio and I'm trying to implement a listview in a fragment with an adapter. After launching my application I have this error message

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference

It seems to be something with my adapter. Here's my code:

MainActivity.java

Problem: I have a ContainerFragment in which there is a ViewPager. CameraFragment is being shown in this viewpager. The shutter button is in ContainerFragment and I'm using an interface to receive callback in CameraFragment when shutter button is clicked in order to click picture. When callback is received then I try to capture image and app crashes with error.

Log:

I have a main activity that contains a ViewPager2 and a TabLayout to house a few fragments. Each fragment will have buttons that I want to trigger actions in the main activity. However, I'm not seeing how to set up the buttons/event handlers so that the main activity is notified whenever a button is pressed inside one of the fragments. Thanks!

MenuActivity.kt - ViewPager2/TabLayout Setup

I'm using viewBinding successfully and never encountered this problem before. The property is initialized in onViewCreated like so:

So now I'm writing custom camera, and I want to write location into images that I captured, for some reason I cannot use builder.set() here. The file was created like this:

I'm trying to implement the Camera2 API in my application. Having never done this before, I'm starting with the Camera2Basic example code provided by android.

However, within the createCaptureSession() method there is a deprecated initialization method CameraDevice.createCaptureSession(), so I changed it to the following:

I have been getting a java.io.IOException: Not a directory exception for the following code:

I am using Camerax to capture images. but I want to navigate to another fragment after camera capture success.

I am using this code.

I'm still practicing with Kotlin and Android Developing. As far as I understood, Camera class has been deprecated, and Android invites to use Camerax instead, because this high-level class is device-indipendent, and they've made simpler the process of implementing cameras on apps.

I've tried to read the documentation (https://developer.android.com/training/camerax) but it's written so bad I barely understood what they are trying to explain. So I went to read the entire sample code given in the documentation itself (https://github.com/android/camera-samples/tree/main/CameraXBasic). The CameraFragment code is about 500 lines long (ignoring imports and various comments).

Do I really need to write 500 lines of code to simply take a picture? How is this supposed to be considered "simpler than before"?

I mean, Android programming is at the point where I just need to write only 4 lines of code to ask the user to select an Image from his storage and retreive it and show it in an ImageView. Is there a TRUE simple way to take a picture, or do I really need to stop and lose a whole day of work to write all those lines of code?

EDIT: Take this page of the documentation: https://developer.android.com/training/camerax/architecture#kotlin It starts with this piece of code.