An easy guide to accessing a file from an SD card using PhoneGap

I'm currently experimenting with PhoneGap's documentation tutorial by calling the window.requestFileSystem method only when I need to access a specific file, instead of inside the onDeviceReady function. However, I've encountered an issue where my code doesn't seem to progress past that particular line.

function pullSelectRecord(link)
{
    selectedFile = link;
    window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
}

function gotFS(fileSystem) {
        alert("this is" + selectedFile);
        fileSystem.root.getFile(link, null, gotFileEntry, fail);
    }

    function gotFileEntry(fileEntry) {
        fileEntry.file(gotFile, fail);
    }

    function gotFile(file){
        readDataUrl(file);
        readAsText(file);
    }

 function readAsText(file) {
        var reader = new FileReader();
        reader.onloadend = function(evt) {
            alert(evt.target.result);
        };
        reader.readAsText(file);
    }

Answer №1

Feel free to use requestFileSystem from any part of your code. If you're stuck at this point, check the "adb logcat" for error messages that can guide you in troubleshooting. Additionally, double-check if your Manifest.xml includes the necessary write external storage permission.

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

Avoid loading the page when the browser's back button is pressed with vue-router

In my application, I have a "Home" page as well as a "Success" page. On the Success page, there is a button that, when clicked, redirects to a URL like https://google.com, using window.location.href='https://google.com'. Currently, I am able to ...

Find out if OpenAI's chat completion feature will trigger a function call or generate a message

In my NestJS application, I have integrated a chat feature that utilizes the openai createChatCompletion API to produce responses based on user input and send them back to the client in real-time. Now, with the introduction of function calls in the openai ...

Running the ng build command will execute a JavaScript file

I need help running a JavaScript file within my Angular application every time I initiate ng build. Specifically, the script should be executed prior to the build process to ensure that its changes are reflected in the final build. The JavaScript file, na ...

Tips for maximizing the efficiency of a callback when utilizing the filter function in Primefaces for 'myDataTable'

Currently using Primefaces 5.1, and I've encountered a situation where I want to hide a table until after the filter is applied in Javascript. My initial thought was to simply set the css of the table to visibility:hidden;, followed by running the fol ...

Loop variables undergoing change

I am currently working on a loop that fetches data from an API and then processes it to populate a simple array with the retrieved information. Promise.all(promises.map(obj => API.functionName(obj))).then((response) => { var index = startingDate; ...

Issue with response.split(",")[0] in Internet Explorer

Here is the code snippet I am struggling with: <script> $('#blah').on('click', function(){ $.ajax({ type: 'POST', url: 'ajax.php', data: {"xxx":"yyy", "zzz":"nnn ...

Unable to access setRowData() in AgGrid/Angular 2 leads to rendering of the grid without displaying any rowData

Resolved I think my solution is temporarily fixed and it reveals that I may have set up my mongoose model incorrectly. The answer provided did assist me in solving my issue, but ultimately the reason for the empty data rows was due to incorrect identifier ...

iOS is causing issues with the JavaScript function and not allowing it to

By creating an NSString that contains JavaScript, I am able to set the e-mail body. NSString * someString =@"<!DOCTYPE html>\n <html>\n <body> \n <h1>My Web Page</h1> \n <p ...

Unexpected behavior found in certain parts of jquery due to the implementation of Ajax

Every time I try to use the ajax code on the same page or an external .js file, it seems to cause issues and prevents other parts of the code (jquery) from functioning properly. The ajax should only trigger when clicking on a specific li element with the c ...

Steps to converting each new line into a list in JavaScript

Consider the following scenario where an object is structured as shown below: data { second minute hour dog cat horse apple orange strawberry } Is there a way to iterate through the fields{} dictionary and convert each line into its individual ...

Tips for including a class in a HTML document using jQuery?

I have successfully included my header and footer in separate HTML files using jQuery's .load() function. The jQuery code I used is shown below: $(function(){ $("#header").load("page-component/header.html"); $("#footer").load("page-component/f ...

Issue with AngularJS 1.x filter on null columns

I am currently working on a table that has multiple filter fields, one for each column. <table> <tr> <th><input type="text" ng-model="search.name"></th> <th><input type="text" ng-model="search.pho ...

Iterate over the array and eliminate any stylesheets

Currently working on a website using WordPress, and dealing with some unwanted css files that come with certain plugins. I've been attempting to remove these stylesheets with JavaScript but keep running into an error saying Failed to execute 'qu ...

Unable to configure AngularJS inputs to have a blank default value

I am facing a peculiar issue where I am unable to initialize my input fields as blank/empty. Even after clearing the cache and performing a hard reload, Google Chrome seems to be auto-populating them with older cached values. Here is the current view: ht ...

Having trouble sending a FormData object with Axios for a user uploaded file in a React, Node.JS project

My goal is to enable users to upload images to my application, which consists of a React frontend and a Node backend. The process involves sending the uploaded file from the client to the server, followed by making a request from the server to Firebase clo ...

Is there a way to dynamically modify a website's default viewport settings in a mobile browser?

When viewing a website in Landscape mode, everything looks good. However, switching to Portrait mode displays the message "Screen size not supported." I decided to test this on my desktop browser and discovered that adjusting the initial-scale:1 to initial ...

Tips for receiving responses when data is posted to a URL in Node.js using `req.body.url`

How can I retrieve data from the URL provided in req.body.url using Postman's collection tool? In my code snippet, I have defined a key as "URL" and the corresponding value as a live URL. You can refer to the screenshot below for more details: https: ...

Passing data between Vue.js components using jQuery

I have two components in my Vue.js project - ShowComment and EditComment. Within ShowComment, there is a variable called this.CommentRecID that I need to access in the EditComment component. The issue I am facing is that when I try to log this.CommentRec ...

Using Typescript to pass inferred type to React's useCallback

Illustration: function useFunction(fn) { return fn; } type Data = { '/person': { person: any }, '/place': { place: any }, }; function useData<Path extends keyof Data>( path: Path, options: { callback?: (data: Data[ ...

Is there a way to remove <font> tags using Javascript designMode?

Currently, I am in the process of developing a WYSIWYG editor as a hobby project. My approach involves utilizing an iframe with design mode enabled and leveraging the execcommand feature in JavaScript to implement the editor functionalities. For instance, ...