pjamesrud

pjamesrud

Android app, using a loop value to set visibilty and add data to textview?

I am creating an app that allows user to enter values and depending on the value a number of textviews are changed programmatically from gone to visible.
In the xml file there is TV!,TV2 and TV3, The user enters a couple of numbers from previous activity and these are used to set the visibility of the TV1,TV2 and TV3 textviews

Example:
            User enters 2.
Using a for loop 
        for (int i = 0; i<= userinput; i++){
          showTV = "TV"+(i);
          showTV.setVisibility(View.VISIBLE);
          showTV.setText(String.valueOf(list1.get(1)));

But I can not get the textview’s Id to be recognized using the i value

Can it be done this way or is this the wrong direction.

First Post!

Veeran

Veeran

It seems like you’re on the right track, but there’s a small mistake in your approach. When trying to dynamically set the visibility of TextViews based on user input, you should use the resource identifier (R.id) to access the TextViews rather than concatenating a string.

You can achieve this by creating an array of TextViews in your Java code that corresponds to the TextViews in your XML layout. Then, you can iterate through this array to set the visibility of TextViews based on the user input. Here’s a simplified example:

// Assuming you have TextViews in your XML with IDs TV1, TV2, and TV3
TextView tvArray = new TextView{findViewById(R.id.TV1), findViewById(R.id.TV2), findViewById(R.id.TV3)};

int userInput = 2; // Example user input

for (int i = 0; i <= userInput; i++) {
tvArray[i].setVisibility(View.VISIBLE);
tvArray[i].setText(String.valueOf(list1.get(i))); // Assuming list1 contains the values you want to set
}

Best Regards

Where Next?

Popular Frontend topics Top

New
jubocade
What is the best course of front end (live webinars or recorded)? So I already have basic understanding of HTML CSS JS and React but I wa...
New
beberardinelli
Hi! I just started coding a few months ago and I am trying to get all the help I can get. My friend showed me this debugging tool called...
New
pavanforza
I have a requirement to extract data from firebase which is used to build serverless applications. Can we connect Firebase no-sql databa...
New
tomcatttttt
I’m trying to take the API from the site to get a seamless online game through the HTML5 API. It works in all browsers except Google Chro...
New
harwind
First have a look at the code: function mainfunc(func, par3, par2){ window[func](par3, par2); } function calledfunc(par3, par2){ ...
/js
New
Fl4m3Ph03n1x
Background I have a fresh umbrella app and I am trying to create a Phoenix app inside it. However, even though I can create the Phoenix a...
New
ramiro-marinio
Hello. So unexperienced frontend dev here. Basically, 3 or 4 months ago I started working on a project and I committed the capital sin of...
New
wilsoc31
First time building an app. It will run for Android and also for iPhone 15 but will not for iPod. Not sure why or where to even begin. ...
New
Benjamin-Philip
I’m curious about designing some websites and applications for personal (and potentially public via open sourcing) use. I’m an experience...
New

Other popular topics Top

PragmaticBookshelf
Rust is an exciting new programming language combining the power of C with memory safety, fearless concurrency, and productivity boosters...
New
AstonJ
I ended up cancelling my Moonlander order as I think it’s just going to be a bit too bulky for me. I think the Planck and the Preonic (o...
New
dimitarvp
Small essay with thoughts on macOS vs. Linux: I know @Exadra37 is just waiting around the corner to scream at me “I TOLD YOU SO!!!” but I...
New
Exadra37
I am asking for any distro that only has the bare-bones to be able to get a shell in the server and then just install the packages as we ...
New
AstonJ
Continuing the discussion from Thinking about learning Crystal, let’s discuss - I was wondering which languages don’t GC - maybe we can c...
New
PragmaticBookshelf
Author Spotlight Rebecca Skinner @RebeccaSkinner Welcome to our latest author spotlight, where we sit down with Rebecca Skinner, auth...
New
CommunityNews
A Brief Review of the Minisforum V3 AMD Tablet. Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...
New
AstonJ
This is a very quick guide, you just need to: Download LM Studio: https://lmstudio.ai/ Click on search Type DeepSeek, then select the o...
New
PragmaticBookshelf
A concise guide to MySQL 9 database administration, covering fundamental concepts, techniques, and best practices. Neil Smyth MySQL...
New
CommunityNews
Open-source implementation of the classic GTA engine now running directly in your browser. Experience the reVC technology demo on DOS.Zon...
New