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FileTransfer is an object that allows you to upload files to a server or download files from a server.
The FileTransfer
object provides a way to upload files to a remote server using an HTTP multi-part POST request. Both HTTP and HTTPS protocols are supported. Optional parameters can be specified by passing a FileUploadOptions object to the upload method. On successful upload, the success callback will be called with a FileUploadResult object. If an error occurs, the error callback will be invoked with a FileTransferError object. It is also possible to download a file from remote and save it on the device (only iOS and Android).
Parameters:
Quick Example
// !! Assumes variable fileURI contains a valid URI to a text file on the device var win = function(r) { console.log("Code = " + r.responseCode); console.log("Response = " + r.response); console.log("Sent = " + r.bytesSent); } var fail = function(error) { alert("An error has occurred: Code = " + error.code); console.log("upload error source " + error.source); console.log("upload error target " + error.target); } var options = new FileUploadOptions(); options.fileKey="file"; options.fileName=fileURI.substr(fileURI.lastIndexOf('/')+1); options.mimeType="text/plain"; var params = {}; params.value1 = "test"; params.value2 = "param"; options.params = params; var ft = new FileTransfer(); ft.upload(fileURI, encodeURI("http://some.server.com/upload.php"), win, fail, options);
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>File Transfer Example</title> <script type="text/javascript" charset="utf-8" src="cordova-2.8.0.js"></script> <script type="text/javascript" charset="utf-8"> // Wait for Cordova to load // document.addEventListener("deviceready", onDeviceReady, false); // Cordova is ready // function onDeviceReady() { // Retrieve image file location from specified source navigator.camera.getPicture(uploadPhoto, function(message) { alert('get picture failed'); }, { quality: 50, destinationType: navigator.camera.DestinationType.FILE_URI, sourceType: navigator.camera.PictureSourceType.PHOTOLIBRARY } ); } function uploadPhoto(imageURI) { var options = new FileUploadOptions(); options.fileKey="file"; options.fileName=imageURI.substr(imageURI.lastIndexOf('/')+1); options.mimeType="image/jpeg"; var params = {}; params.value1 = "test"; params.value2 = "param"; options.params = params; var ft = new FileTransfer(); ft.upload(imageURI, encodeURI("http://some.server.com/upload.php"), win, fail, options); } function win(r) { console.log("Code = " + r.responseCode); console.log("Response = " + r.response); console.log("Sent = " + r.bytesSent); } function fail(error) { alert("An error has occurred: Code = " + error.code); console.log("upload error source " + error.source); console.log("upload error target " + error.target); } </script> </head> <body> <h1>Example</h1> <p>Upload File</p> </body> </html>
Setting Upload Headers
Supported on Android and iOS
function win(r) { console.log("Code = " + r.responseCode); console.log("Response = " + r.response); console.log("Sent = " + r.bytesSent); } function fail(error) { alert("An error has occurred: Code = " + error.code); console.log("upload error source " + error.source); console.log("upload error target " + error.target); } var uri = encodeURI("http://some.server.com/upload.php"); var options = new FileUploadOptions(); options.fileKey="file"; options.fileName=fileURI.substr(fileURI.lastIndexOf('/')+1); options.mimeType="text/plain"; var headers={'headerParam':'headerValue'}; options.headers = headers; var ft = new FileTransfer(); ft.upload(fileURI, uri, win, fail, options);
Android Quirks
If you experience problems uploading to a Nginx server then make sure you have the chunkedMode option set to false.
Parameters:
Quick Example
// !! 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==" } } );
Aborts an in-progress transfer. The onerror callback will be called with a FileTransferError object which has an error code of FileTransferError.ABORT_ERR.
Supported Platforms
Quick Example
// !! Assumes variable fileURI contains a valid URI to a text file on the device var win = function(r) { console.log("Code = " + r.responseCode); console.log("Response = " + r.response); console.log("Sent = " + r.bytesSent); } var fail = function(error) { alert("An error has occurred: Code = " + error.code); console.log("upload error source " + error.source); console.log("upload error target " + error.target); } var options = new FileUploadOptions(); options.fileKey="file"; options.fileName=fileURI.substr(fileURI.lastIndexOf('/')+1); options.mimeType="text/plain"; var params = {}; params.value1 = "test"; params.value2 = "param"; options.params = params; var ft = new FileTransfer(); ft.upload(fileURI, encodeURI("http://some.server.com/upload.php"), win, fail, options); ft.abort(win, fail);
Called with a ProgressEvent whenever a new chunk of data is transferred.
Supported Platforms
Example
fileTransfer.onprogress = function(progressEvent) { if (progressEvent.lengthComputable) { loadingStatus.setPercentage(progressEvent.loaded / progressEvent.total); } else { loadingStatus.increment(); } }; fileTransfer.download(...); // or fileTransfer.upload(...);
Quirks