Nativescript - How to POST Image with http.request - nativescript

Question

Help, I need call the http.request for send Image captured in camera api in my NativeScript App.
I capture the photo in camera api for nativescript and need send to api in upload process.
Follow the code about this process:
var frameModule = require("ui/frame");
var viewModule = require("ui/core/view");
var Observable = require("data/observable").Observable;
var config = require("../../shared/config");
var cameraModule = require("camera");
var imageModule = require("ui/image");
var http = require("http");
exports.loaded = function(args) {
var page = args.object;
viewModel = new Observable({
coleta: config.id_coleta
});
page.bindingContext = viewModel;
};
exports.voltar = function() {
var topmost = frameModule.topmost();
topmost.navigate("views/ocorrencia/menuocorrencia");
};
function tapFoto() {
cameraModule.takePicture({
width: 300,
height: 300,
keepAspectRatio: true
}).then(function(picture) {
var image = new imageModule.Image();
image.imageSource = picture;
var item = {
itemImage: picture
};
var urlfoto = "http://192.1.1.1:8090/sendphoto/upload";
alert("URL: " + urlfoto);
http.request({
url: urlfoto,
method: "POST",
headers: {
"Content-Type": "multipart/form-data"
},
content: ({uploadFile: image.imageSource, entrega: config.id_coleta})
}).then(function (response) {
var statusCode = response.statusCode;
alert("Codigo Retorno: " + statusCode);
alert("Foto registrada com sucesso.");
}, function (e){
alert("Erro: " + e);
});
});
}
exports.tapFoto = tapFoto;

Answer 1

I recommend using of nativescript-background-http plugin for uploading files.
tns plugin add nativescript-background-http
Here is your code modifed to work with the installed plugin:
"use strict";
var Observable = require("data/observable").Observable;
var cameraModule = require("camera");
var fs = require("file-system");
var bghttpModule = require("nativescript-background-http");
var session = bghttpModule.session("image-upload");
var viewModel = new Observable();
function navigatingTo(args) {
var page = args.object;
page.bindingContext = viewModel;
}
exports.navigatingTo = navigatingTo;
function onTap() {
cameraModule.takePicture({
width: 300,
height: 300,
keepAspectRatio: true
}).then(function (imageSource) {
console.log("Image taken!");
var folder = fs.knownFolders.documents();
var path = fs.path.join(folder.path, "Test.png");
var saved = imageSource.saveToFile(path, "png");
var request = {
url: "http://httpbin.org/post",
method: "POST",
headers: {
"Content-Type": "application/octet-stream",
"File-Name": "Test.png"
},
description: "{ 'uploading': " + "Test.png" + " }"
};
var task = session.uploadFile(path, request);
task.on("progress", logEvent);
task.on("error", logEvent);
task.on("complete", logEvent);
function logEvent(e) {
console.log("----------------");
console.log('Status: ' + e.eventName);
// console.log(e.object);
if (e.totalBytes !== undefined) {
console.log('current bytes transfered: ' + e.currentBytes);
console.log('Total bytes to transfer: ' + e.totalBytes);
}
}
});
}
exports.onTap = onTap;