Cordova Upload Images using File Transfer Plugin and. Net Core WebAPI

Last Update:2018-07-19 Source: Internet

Author: User

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

Requirements

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

Steps

1. Build the 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.

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, the want to store your project.
Click on OK

Our Project looks.

Adding Plugin:

Open CONFIG.
Go to Plugin.
Click on Camera. (Cordova-plugin-camera)
Click on ADD.
Similarly Add File Transfer Plugin (cordova-plugin-file-transfer)

You can see, our installed plugin are 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.

Cordova Upload Images using File Transfer Plugin and .Net core WebAPI

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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