Tips for managing a ScrollableView with numerous views

I am working on a Titanium project specifically for Android that involves using a ScrollableView to scroll through numerous views. Each view contains a paragraph or two of text and possibly an image.

My concern is the strain this may put on the CPU if all views are populated at once. To remedy this, I have devised a plan to only display three views within the ScrollableView at any given time.

Here is my proposed solution: each view is numbered from 1 to 10, with the currently active view in bold. The other views are denoted by placeholders. For example, when the user first views the app:

1 2 3 - - - - - - -

As the user scrolls right:

1 2 3 - - - - - - -

Upon scrolling again, view 1 is replaced with view 4 to maintain the pattern.

- 2 3 4 - - - - - -

This process continues as the user interacts with the ScrollableView.

One challenge I am facing is the inability to insert views before existing ones, such as when scrolling left. How should I go about implementing this feature?

javascriptandroidtitanium

Answer №1

I have developed a Titanium module that implements the functionality described in this GitHub gist. You can find more information about it on my blog

Here is an example of how to use it:

var VirtualScroller = require('ui/common/VirtualScroller');

var virtualScroller = VirtualScroller({
    itemCount: 10,
    start: 0,
    getView: function(i) {
        return Titanium.UI.createLabel({
            width: Titanium.UI.FILL,
            height: Titanium.UI.FILL,
            text: "This is item " + (i + 1)
        });
    },
    isInfinite: false
});

window.add(virtualScroller.view);

This module operates by managing a ScrollableView with three views, similar to the original gist. It offers support for both finite and infinite scrolling.

You can access this module on BitBucket.

Answer №2

If you're looking for a way to display a list without dividers and with efficient scrolling, I recommend implementing a ListView. This component handles scrolling internally, eliminating the need for a ScrollView wrapper. Additionally, it optimizes content loading by only keeping visible items in memory at any given time.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

creating dynamic JavaScript elements within a parent div container on the client side

I've been working on a JavaScript code that generates new div elements every few milliseconds and stacks them up. However, I'm facing an issue where the script is running outside of any specific div container. Is using document.getElementById("pa ...

javascripthtmldom

Encountering an issue with setting an adapter for an Android ListView using an array of filenames

I'm having trouble creating a ListView that displays files from a specific directory. I followed this tutorial, but unfortunately, my application keeps crashing. Here is the LogCat output: 03-16 15:46:03.781: D/AndroidRuntime(16689): Shutting down V ...

javaandroideclipselistviewlistadapter

Ways to retrieve the current state within a function after invoking the setState method

I'm currently working on a function to store the blogPost object in a document within my Firestore database. The process I have in mind is as follows: Click on the SAVE button and initiate the savePost() function The savePost() function should then ...

javascriptreactjsfirebasegoogle-cloud-firestorereact-hooks

Tips on redirecting a user to a specific page after they have made a selection without doing so immediately

I am a beginner in the world of coding. Currently, I am working on creating templates for an online software application. Users will have the option to select from different choices using radio buttons. However, I want to ensure that users are not redirect ...

javascripthtml

Tips for building an independent library in Android with AndroidStudio

Being new to the world of JAVA/ Android after coming from a C background, I find the AndroidStudio/ Gradle setup to be quite overwhelming. My intention is to develop a library in AndroidStudio. However, when I try to start a new Android Studio project, it ...

javaandroidandroid-studiogradleshared-libraries

Export all except those from the module in ESM

Suppose I have two imports containing numerous named exports, too many to list individually, and I need to reexport them while excluding a few due to naming conflicts. For example, consider the following two files: foo.js: export const a = 1; export cons ...

javascripttypescriptes6-modules

Retrieving JSON data from an API

As a beginner with Jquery JSON and API's, I am trying to work on hitting an API that returns city names in JSON format. I need to display these city names dynamically on my webpage in a list format. Can someone guide me through this process? If you w ...

javascriptjqueryjson

Connecting Angular directive to a controller

While diving into some Angular JS tutorials, I decided to apply what I learned in the Ionic framework. Unfortunately, I hit a roadblock when attempting to create a reusable HTML control because the model isn't syncing with the view as expected. Here&a ...

javascriptangularjshtml

Strategies for developing versatile controls that can adapt to the environment in which they are used?

Take a look at the image provided. In my application, I have three large black rectangles representing different forms in separate contexts. Across all three forms, there is a red box control present. The visibility and values of this red box are determin ...

javascriptjqueryasp.netdesign-patterns

Can you provide me the steps to delete the title attribute from images in Wordpress?

My client has expressed dissatisfaction with the tooltip that appears when hovering over images in certain browsers, particularly Safari. This tooltip displays the title attribute within the img tag, which is a requirement enforced by Wordpress. Even if w ...

phpjavascriptwordpress

Align the object with the path it is following

Currently, I am in the process of learning about vectors and their application in moving objects within ThreeJS. For an experiment, I am propelling a box using a specified velocity and an arbitrary gravity vector. Additionally, I am attempting to align th ...

javascriptthree.js

How to share custom data with fb_share feature while displaying box count? (find out more below)

I am trying to implement Facebook sharing with box count on my website. The code I am using is as follows: <div id="fbShare"> <a name="fb_share" type="button_count" expr:share_url="data:post.url" href="http://www.facebook.com/sharer.php">S ...

javascriptjqueryasp.netfacebook

Oops! The Route.post() function is looking for a callback function, but instead, it received an [object Object

Looking to integrate a password reset feature in my web app, but encountering the error mentioned in the title. Here's a snippet of my code: main.js: const router = express.Router(); const AsyncNewPassword = require('./controller/asyncnewpasswor ...

javascriptnode.jsexpressmongooseexpress-router

What is the process of converting PUG to JSX?

I am currently attempting to integrate Pug code within a JS react application. While researching, I came across this plugin here, which can assist in converting the code. However, it seems to have an issue with handling the "." statements present in the c ...

javascriptreactjspug

Populate the table with JSON content using jQuery

I am attempting to populate a table with JSON data using jQuery, but the content within the div remains empty. I need assistance in identifying the error. The array list contains the data (I verified this using console.log(list)). Additionally, list[' ...

phpjavascriptjqueryjson

Having trouble retrieving req.session variables in Express/NodeJS?

I have come across various versions of this particular question, however, none of them seem to address my issue directly. My current objective is to establish a Node.js server using Express. Below is my existing server configuration: var express = require ...

javascriptnode.jssessionexpress

Is there a way to emphasize my navigation using a call-to-action (CTA)?

My CTA is set up like this: <div class="heading__link"> <a class="heading__cta" href="#about">View my work</a> </div> Additionally, my navigation bar is structured like this: <nav id=&quo ...

javascripthtmlcss

Unlocking secure content with Ajax

Trying to access a webservice or webpage solely through ajax, as it is the only allowed method for some reason. The webservice is secured with corporate SSO. When requesting webpage X for the first time, you are redirected to login page Y, outside of the a ...

javascripthtmlajax

Creating a series of tiny vertical markings along the horizontal line using the input range

I have a range input and I am looking to add small vertical lines at intervals of 10 on the horizontal line representing each default step. The range of my input is from 0 to 40 and I would like to have small vertical lines at 10, 20, and 30. I need to ac ...

javascripthtmlcssinputsalesforce-lightning

Using React Native to implement a slide bar that displays an image

Currently working on an app and aiming to implement a slider feature for emoji selection. Despite searching for suitable packages, I have not been able to find one that fits my requirements. As a result, I decided to use the react native slider instead. Ho ...

javascriptreactjsreact-native