In this article, I am going to explain ,"How to Upload Images to the server using Cordova File Transfer Plugin and Asp.Net core Web API".

Requirements

  • Web API (you can use local IIS servers to host your API)
  • Cordova Camera Plugin (cordova-plugin-camera)
  • Cordova File Transfer Plugin (cordova-plugin-filetransfer)

Steps

1. Build Asp.net core Web API.

2. Camera Plugin to use mobile camera.

3. Upload Images using File transfer plugin.

SERVER SIDE:

Follow the link below to built Image Upload REST API Using ASP.NET Core.

Follow the link to Host ASP.NET Core Web API on IIS.

MOBILE APP:

Create New project on Visual Studio.

  • Select JavaScript
  • Select Mobile Apps
  • Select Blank APP (Cordova APP)
  • Provide Project Name
  • Select Location that you want to store your project.
  • Click on OK

  • Our Project looks like this.

Adding Plugin:

  • Open config.xml
  • Go to Plugin.
  • Click on Camera. (cordova-plugin-camera)
  • Click on Add.
  • Similarly Add File Transfer Plugin(cordova-plugin-file-transfer)

  • You can see that our installed plugin is on the  installed tab.

Now open your index.html and add following div.

<div class="row">

      <div class="profile-header-container">

         <div class="profile-header-img">

             <div id="image">

                 <img class='img-circle' width='120' height='120' src='images/USER.jpg' />

             </div>

             <div class="rank-label-container">

                 <input type="button" value="Update Profile Picture" id="GetImage">

             </div>

         </div>

      </div>

</div>
  • USER.jpg is a dummy image.

  • Remove all the content of index.css and add following style
body, html {

    height: 100%;

    background-repeat: no-repeat;

    background-image: linear-gradient(rgb(104, 145, 162), rgb(12, 97, 33));

}

/**

 * Profile image component

 */

.profile-header-container {

    margin: 0 auto;

    text-align: center;

}

.profile-header-img {

    padding: 54px;

}

    .profile-header-img > img.img-circle {

        width: 120px;

        height: 120px;

        border: 2px solid #51D2B7;

    }

.profile-header {

    margin-top: 43px;

}

/**

 * Ranking component

 */

.rank-label-container {

    margin-top: -19px;

    /* z-index: 1000; */

    text-align: center;

}

.label.label-default.rank-label {

    background-color: rgb(81, 210, 183);

    padding: 5px 10px 5px 10px;

    border-radius: 27px;

}
  • final Index.htm willl look like:
<!DOCTYPE html>

<html>

<head>

    <meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">

    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />

    <meta name="format-detection" content="telephone=no">

    <meta name="msapplication-tap-highlight" content="no">

    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">

    <link rel="stylesheet" type="text/css" href="css/index.css">

    <title>ImageUploadCordova</title>

</head>

<body>

    <div class="row">

        <div class="profile-header-container">

            <div class="profile-header-img">

                <div id="image">

                    <img class='img-circle' width='120' height='120' src='images/USER.jpg' />

                </div>

                <div class="rank-label-container">

                    <input type="button" value="Update Profile Picture" id="GetImage">

                </div>

            </div>

        </div>

    </div>

    <script type="text/javascript" src="cordova.js"></script>

    <script type="text/javascript" src="scripts/platformOverrides.js"></script>

    <script type="text/javascript" src="scripts/index.js"></script>

</body>

</html>
  • final Index.js look like:
(function () {

    "use strict";

    document.addEventListener( 'deviceready', onDeviceReady.bind( this ), false );

    function onDeviceReady() {

        document.getElementById("GetImage").addEventListener("click", GetImage);

    };

})();

function GetImage() {

    navigator.camera.getPicture(function (imageUri) {

        var CapturePhoto = document.getElementById("image");

        alert("Photo Captured");

        CapturePhoto.innerHTML = "<img class='img-circle' width='120' height='120' src='" + imageUri + "' />'";

        uploadPhoto(imageUri);

    }, null, null);

}

function uploadPhoto(imageURI) {

    var options = new FileUploadOptions();

    options.fileKey = "files";

    options.fileName = imageURI.substr(imageURI.lastIndexOf('/') + 1);

    options.mimeType = "image/jpeg";

    console.log(options.fileName);

    var ft = new FileTransfer();

    ft.upload(imageURI, "http://192.168.1.66:8084/api/image", function (result) {

        console.log(JSON.stringify(result));

        alert(JSON.stringify(result));

    }, function (error) {

        console.log(JSON.stringify(error));

        alert(JSON.stringify(result));

    }, options);

}

In Index.js, you can see two methods firstly, GetImage for capturing image from Camera and secondly, UploadImage for uploading image to our web api. http://192.168.1.66:8084 is my local IIS server address.

Output:

  • Tap on Upload Profile Picture.
  • Choose camera
  • Take a picture.

Server Side Output:

  • Open your IIS.
  • Right click on your webAPI and click on Explore.

  • Finally, image is uploaded on Server Folder.

Summary:

In this article, we learned how to Upload Image using Cordova Camera plugin and File Transfer Plugin with ASP.Net core web API on Server Side.

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