TextUtils | A tool for analyzing text data in Django backend | REST library

So I am relatively new to programming, and I have been working on this task app, where I want to save the data such as task name and more, given by the user. I am trying to accomplish this using Room. Now, initially, when I tried to do it, the app would crash since I was doing everything on the main thread probably. So, after a little research, I came to AsyncTask, but that is outdated. Now finally I have come across the Executer. I created a class for it, but I am a little unsure as to how I can implement it in my app. This is what I did :

Entity Class :

I am working on a tasks app, and I have this activity that takes data from the user in the form of radio buttons. However, I don't want the user to exit the activity without filling any radio buttons. How can I go about that? I have been trying to fix this problem since forever, but got nothing yet.

This is the code for my activity :

when my function remeber me is checked, it only stored the username and not the password, how to fix or change the whole function in order to have the possibility to store both username and password.

I am trying to receive data from bluetooth device which is expected to be in this format:

MY ORIGINAL QUESTION I am making an android app with firebase Realtime database. I am getting sum of the firebase nodes in side recycler view. I have a text view out side the recycler view where I am getting the sub total of the values of the recycler view. MY PROBLEM is that I cannot get the actual sum and also the sum keeps increasing when I scroll up and down. Here is my Main activity JAVA code:

I am trying to create a delete menu Icon when I tap on that it opens a dialog asking whether to delete this item from the list or not but when I am tapping on that nothing happens.

File where delete menu is present

UpdateFragment.kt

package com.example.roomtutorial1.fragments.update

I'm trying to port the Espresso sample from Java to Kotlin, I got an error for the WebView version

I'm using the name MainActivity.kt as is, it just simple and works well:

I have a SearchView set up on the top Toolbar in MainActivity. A user clicks on the search icon and then enters search character(s) from a soft keyboard. A ViewModel observer returns matching data from a Room database and then runs a setFilter() method for the CardsAdapter to set up a RecyclerView list that shows CardViews that matched the search String. I set up Spannable code in the Adapter's onBindViewHolder() to highlight the characters that match the search String, for each returned CardView.

The search code is returning the correct CardViews. However, the Spannable code is not working as expected. What am I missing here?

Here are the outcomes I am trying to fix:

1. if a small "t" is entered in the SearchView,

   a) then only the first "t" is highlighted (in green color). All remaining small "t"s for that CardView EditText line are not highlighted. I would like all small "t"s highlighted.

   b) none of the CardViews that have a uppercase "T" are highlighted in the green color. I would like all Uppercase "T"s to be highlighted as well.

Here is a sample CardView showing the two issues: only the first small "t" is highlighted in green and the Uppercase "T" is not highlighted at all.

1. if an Uppercase "T" is entered in the SearchView,

   a) then only the first "T" is highlighted (in green color). All remaining uppercase "T"s are not highlighted. I would like all "T"s to be highlighted.

   b) none of the CardViews that have a small "t" are highlighted in the green color. I would like all of the small "t"s to be highlighted as well.

In onBindViewHolder(), if I append the "String todoHighlight = card.getTodo()" with ".toLowerCase()" then:

1. if a small "t" is entered in the SearchView,

   a) then only the first "T" or "t" is highlighted (in green color). All remaining "T"s or "t"s are not highlighted. I would like them all highlighted.

   b) The capital "T"s are highlighted in the green color as I would like.

2. if an uppercase "T" is entered in the SearchView,

   a) none of the CardViews that have a small "t" or an uppercase "T" are highlighted in the green color. I would like them all highlighted.

   MainActivity

   ...

   ...

Clicking on setupBtn saves the following com.google.android.gms.tasks.zzu@9138f83 instead of image links.

I think the whole problem is in this line Uri download_uri = Uri.parse(task.getResult().getMetadata().getReference().getDownloadUrl().toString());

Tell me what the problem is and how to fix it.

Complete code for Activity