I have some client-side infos (a long associative array encoded with JSON) that I would like to send to the server with POST, to create an image based on those infos. The goal is to download that image using Phonegap primitives and saving it to the local storage.
Is there a way to do it?
Looking to the phonegap reference is there no way to send explicitely post data. Should I work with the parameter "header" (???) ?
Example:
var fileTransfer = new FileTransfer();
var uri = encodeURI("http://some.server.com/create_my_image.php");
fileTransfer.download(
uri,
filePath,
function(entry) {
console.log("download complete: " + entry.fullPath);
},
function(error) {
console.log("download error source " + error.source);
console.log("download error target " + error.target);
console.log("upload error code" + error.code);
},
false,
{
// HERE ADD SOME CODE TO SEND POST DATA?
headers: {
"???": "???"
}
}
);
Related
I have more than 2 weeks that i tried to download file PDF in phonegap application using the File Transfer Plugin but it didn't work!! i make everything for that:
-installing the last version of phonegap
-installing the last version of File Transfer plugin
And this is the code to integrate in Javascript interface:
var fileTransfer = new FileTransfer();
fileTransfer.download(
"http://developer.android.com/assets/images/home/ics-android.png",
"file://sdcard/ics-android.png",
function(entry) {
alert("download complete: " + entry.fullPath);
},
function(error) {
alert("download error source " + error.source);
alert("download error target " + error.target);
alert("upload error code" + error.code);
});
But it seems wrong!!! I have like a result last three alerts in an android device:
-Download error source
-Download error target
-Upload error code
What i should doing?!!
Request you to check out my github page that contains a sample Cordova app which downloads PDF file from external URL and downloads it to the device.
This sample app is tested both in iOS and android devices. Hope it helps.
According to file transfer plugin documentation, first of all you need to create a file where you will store your remote data. Your code should look like this:
{
//call this after onDeviceReady event
...
var savePath = cordova.file.externalRootDirectory;
var fileName = "ics-android.png";
var url = encodeURI("http://developer.android.com/assets/images/home/ics-android.png");
downloadFile(savePath, fileName, url);
...
}
function downloadFile(savePath, fileName, remoteURL) {
window.resolveLocalFileSystemURL(savePath, function (dirEntry) {
console.log('file system open: ' + dirEntry.name);
createFile(dirEntry, fileName, function (fileEntry) {
download(remoteURL, fileEntry);
});
}, function (err) { alert(err) });
}
function createFile(dirEntry, fileName, callback) {
// Creates a new file or returns the file if it already exists.
dirEntry.getFile(fileName, { create: true, exclusive: false }, function (fileEntry) {
callback(fileEntry);
}, function (err) { alert(err) });
}
function download(remoteURL, fileEntry) {
var fileURL = fileEntry.toURL();
var fileTransfer = new FileTransfer();
fileTransfer.download(
remoteURL,
fileURL,
function (entry) {
alert("download complete: " + entry.fullPath);
},
function (error) {
alert("download error source " + error.source);
alert("download error target " + error.target);
alert("upload error code" + error.code);
});
}
Note that for path I use cordova.file.externalRootDirectory, so you get root sdcard path for file.
I am working on Cordova 2015 Apache cordova app . I want to recieve files from remote server such as https://www.w3.org/2011/web-apps-ws/papers/Nitobi.pdf and save it into my device.
$("#SaveFile").click(function () {
var _fileTransfer = new FileTransfer();
var filePath = cordova.file.dataDirectory + "Download/tost.pdf";
var uri = encodeURI("https://www.w3.org/2011/web-apps-ws/papers/Nitobi.pdf");
_fileTransfer .download(
uri,
filePath,
function (entry) {
alert("download complete: " + entry.fullPath);
},
function (error) {
alert("download error source " + error.source);
alert("download error target " + error.target);
alert("upload error code" + error.code);
},
false,
{
headers: {
"Authorization": "Basic dGVzdHVzZXJuYW1lOnRlc3RwYXNzd29yZA=="
}
}
);
});
When I 'v debugged it always go to error function
1st error describe the source:
2nd error describe the target:
. and i didn't get any thing in download folder .
here is a list of mobile paths from the w3c standard: http://wiki.phonegap.com/w/page/35605874/Planning%3A%20File%20API
and here is how you use it with phonegap: http://docs.phonegap.com/en/1.4.1/phonegap_file_file.md.html#LocalFileSystem
so you have to request the file system onSuccess you can use the path
here a full example: Writing and reading file in phonegap
having a bit of trouble with my download function for Cordova. I have a function here:
document.addEventListener("deviceready", function () {
var fileUrl = e.target.getAttribute('data-soundurl');
console.log(fileUrl);
//returns as "../www/card-sounds/sound2.m4a"
var fileOutputPath = e.target.getAttribute('data-quote') + ".m4a";
console.log(fileOutputPath);
//returns as "Sound Title.m4a"
var fileTransfer = new FileTransfer();
var output = "file:///android_asset/www/res/db/"+fileOutputPath;
fileTransfer.download(
fileUrl,
output,
function(entry) {console.log("download complete: " + entry.toURL());},
function(error) {console.log("download error source " + error.source);
console.log("download error target " + error.target);
console.log("upload error code" + error.code);
},
false,
{headers:{"Authorization": "Basic dGVzdHVzZXJuYW1lOnRlc3RwYXNzd29yZA=="}}
);
console.log(output);
//returns as "file:///android_asset_www_res/db/Sound Title.m4a"
}, true);
And my log output just shows:
download error source null
download error target null
upload error codenull
I can't seem to get any sort of .root part of the FileSystem to actually give me a defined string so I'm just trying to get it to download to Android for now. Am I doing something fundamentally wrong? I am so confused here.
Try this :
var output = "/res/db/"+fileOutputPath;
For your output use
var output = cordova.file.externalRootDirectory + fileOutputPath;
cordova.file.externalRootDirectory should give you something like "file:///storage/emulated/0/"
I'm using Cordova to make android and iOS app, now I would like to check if file already exist in the dirctory.
First I download file from server and save it locally using the code below
$scope.downloadFile = function(){
alert(cordova.file.dataDirectory)
var fileTransfer = new FileTransfer();
var uri = encodeURI("http://example.com/files/th/001.mp3");
var downloadPath = cordova.file.dataDirectory+'001.mp3'; // ANDROID
fileTransfer.download(
uri,
downloadPath,
function(entry) {
$scope.savepath = entry.toInternalURL();
alert("download complete: " + entry.toURL());
alert('saved at : '+entry.toInternalURL());
},
function(error) {
alert("download error source " + error.source);
alert("download error target " + error.target);
alert("upload error code" + error.code);
},
false,
{
headers: {
"Authorization": "Basic dGVzdHVzZXJuYW1lOnRlc3RwYXNzd29yZA=="
}
}
);
}//End DownloadFile
and I would like to check if the file already exist using checkIfFileExists(path) method
function checkIfFileExists(path){
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, function(fileSystem){
//alert('result: '+JSON.stringify(fileSystem.root))
fileSystem.root.getFile(path, { create: false }, fileExists, fileDoesNotExist);
}, getFSFail); //of requestFileSystem
}
function fileExists(fileEntry){
alert("File " + fileEntry.fullPath + " exists!");
}
function fileDoesNotExist(){
alert("file does not exist");
}
function getFSFail(evt) {
console.log(evt.target.error.code);
}
I checked on my phone, the file is already saved to Android/data/com.myname.myappname/file/001.mp3
but the problem is the code always show file does not exist whenever I use the path like
cordova.file.dataDirectory+'001.mp3';
or cdvfile://localhost/persistent/files/001.mp3
or 'cdvfile://localhost/files/001.mp3'
so I would like to ask that the real path that I need to use to check if the file exist or not.
Please provide me any suggestion.
Regards.
Do you need to use or CheckFileExists? You could try using Phonegap's FileReader method?
var reader = new FileReader();
var fileSource = cordova.file.dataDirectory+'001.mp3'
reader.onloadend = function(evt) {
if(evt.target.result == null) {
// Null? You still have a problem: file doesn't exist.
} else {
// Otherwise the file exists.
}
};
//Check if the file exists
reader.readAsDataURL(fileSource);
I've already managed to save a web page (x/html) successfully, but I'd also like to save the images and mp4 videos that are contained in it, for further visualization in offline mode.
I've got access to the iOS filesystem, so I save the html by obtaining the code through an AJAX request, and later saving it to a file.
I don't really know how to do the same with video and images. I have a server to which I can send queries from my app, so it shows exclusively the content I need to download, with the optimal headers in case its necessary. I just don't know how to "download" it from the client side (Javascript).
Thanks in advance for any help.
You can use a FileTransfer object to download a remote image to a local file.
This is the latest official sample snippet:
// !! Assumes filePath is a valid path on the device
var fileTransfer = new FileTransfer();
var uri = encodeURI("http://some.server.com/download.php");
fileTransfer.download(
uri,
filePath,
function(entry) {
console.log("download complete: " + entry.fullPath);
},
function(error) {
console.log("download error source " + error.source);
console.log("download error target " + error.target);
console.log("upload error code" + error.code);
},
false,
{
headers: {
"Authorization": "Basic dGVzdHVzZXJuYW1lOnRlc3RwYXNzd29yZA=="
}
}
);
You can only do it natively I'm afraid.
I'm doing it through a FileDownload PhoneGap Plugin that I wrote, using NSURLConnection. I pass in the url to download to the plugin through Javascript, and a target location (and it even gives me download progress).
Have not tested it yet, but the documentation at PhoneGap looks quite promising http://docs.phonegap.com/en/1.0.0/phonegap_file_file.md.html
I have used this snippet on my ios app project:
window.requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, success, fail);
var target_directory="";
function fail() {
//alert("failed to get filesystem");
}
function downloadImage(url, filename){
alert("download just started.");
try{
var ft = new FileTransfer();
ft.download(
url,
target_directory + filename,
function(entry) {
//alert("download complete!:" + entry.nativeURL ); //path of the downloaded file
},
function(error) {
//alert("download error" + error.code);
//alert("download error" + JSON.stringify(error));
}
);
}
catch (e){
//alert(JSON.stringify(e));
}
}
function success(fileSystem) {
target_directory = fileSystem.root.nativeURL; //root path
downloadImage(encodeURI("http://upload.wikimedia.org/wikipedia/commons/2/22/Turkish_Van_Cat.jpg"), "cat.jpg"); // I just used a sample url and filename
}