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
Sally_san
So I’ve got a client that wants to build a site like this: Specifically 3 things from the website: The fullscreen sections that chang...
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
palak231
Hi this is Palak Sharma I am new here and I found this community while researching about JavaScript over the internet. Well I have comp...
/js
New
prego4444
how can i make a border like this to be exactly on the midle of the edge? i could only found border in inside and outside but nothing on ...
New
Fl4m3Ph03n1x
Background I have a a fresh umbrella project with a Phoenix app inside. To create the app I used the following commands: mix new test_a...
New
harwind
I’m currently working on a front-end development project and I’m facing an issue with aligning items using CSS Flexbox. I want to horizon...
New
pjamesrud
I am creating an app that allows user to enter values and depending on the value a number of textviews are changed programmatically from ...
New
PickyBiker
I have done small amounts of programming for IOS and for Android, but now I need to create something that works with both. What are the ...
New
Julien0577
Hi all, Anybody knows how to do this menu animation? (from BBVA APP, they have the same for both android and iOS app). Is it custom?...
New

Other popular topics Top

PragmaticBookshelf
Stop developing web apps with yesterday’s tools. Today, developers are increasingly adopting Clojure as a web-development platform. See f...
New
AstonJ
Or looking forward to? :nerd_face:
503 15149 280
New
AstonJ
poll poll Be sure to check out @Dusty’s article posted here: An Introduction to Alternative Keyboard Layouts It’s one of the best write-...
New
AstonJ
This looks like a stunning keycap set :orange_heart: A LEGENDARY KEYBOARD LIVES ON When you bought an Apple Macintosh computer in the e...
New
PragmaticBookshelf
Learn different ways of writing concurrent code in Elixir and increase your application's performance, without sacrificing scalability or...
New
AstonJ
We’ve talked about his book briefly here but it is quickly becoming obsolete - so he’s decided to create a series of 7 podcasts, the firs...
New
PragmaticBookshelf
Author Spotlight Mike Riley @mriley This month, we turn the spotlight on Mike Riley, author of Portable Python Projects. Mike’s book ...
New
PragmaticBookshelf
25 puzzles that will make you a better C programmer by challenging your knowledge of the language, and explaining the technical details o...
New
mindriot
Ok, well here are some thoughts and opinions on some of the ergonomic keyboards I have, I guess like mini review of each that I use enoug...
New
PragmaticBookshelf
Use advanced functional programming principles, practical Domain-Driven Design techniques, and production-ready Elixir code to build scal...
New