Develop Reference

react-native How to open local file url using Linking?

I'm using the following code to download a file (can be a PDF or a DOC) and then opening it using Linking.
const { dirs } = RNFetchBlob.fs;
let config = {
fileCache : true,
appendExt : extension,
addAndroidDownloads : {
useDownloadManager : false,
notification : false,
title : 'File',
description : 'A file.',
path: `${dirs.DownloadDir}/file.${extension}`,
},
};
RNFetchBlob.config(config)
.fetch(
method,
remoteUrl,
APIHelpers.getDefaultHeaders()
)
.then((res) => {
let status = res.info().status;
if (status == 200) {
Linking.canOpenURL(res.path())
.then((supported) => {
if (!supported) {
alert('Can\'t handle url: ' + res.path());
} else {
Linking.openURL(res.path())
.catch((err) => alert('An error occurred while opening the file. ' + err));
}
})
.catch((err) => alert('The file cannot be opened. ' + err));
} else {
alert('File was not found.')
}
})
.catch((errorMessage, statusCode) => {
alert('There was some error while downloading the file. ' + errorMessage);
});
However, I'm getting the following error:
An error occurred while opening the file. Error: Unable to open URL:
file:///Users/abhishekpokhriyal/Library/Developer/CoreSimulator/Devices/3E2A9C16-0222-40A6-8C1C-EC174B6EE9E8/data/Containers/Data/Application/A37B9D69-583D-4DC8-94B2-0F4AF8272310/Documents/RNFetchBlob_tmp/RNFetchBlobTmp_o259xexg7axbwq3fh6f4.pdf
I need to implement the solution for both iOS and Android.

I think the easiest way to do so is by using react-native-file-viewer package.
It allows you to Prompt the user to choose an app to open the file with (if there are multiple installed apps that support the mimetype).
import FileViewer from 'react-native-file-viewer';
const path = // absolute-path-to-my-local-file.
FileViewer.open(path, { showOpenWithDialog: true })
.then(() => {
// success
})
.catch(error => {
// error
});

So, I finally did this by replacing Linking by the package react-native-file-viewer.
In my APIHelpers.js:
async getRemoteFile(filePath, extension, method = 'GET') {
const remoteUrl = `${API_BASE_URL}/${encodeURIComponent(filePath)}`;
const { dirs } = RNFetchBlob.fs;
let config = {
fileCache : true,
appendExt : extension,
addAndroidDownloads : {
useDownloadManager : false,
notification : false,
title : 'File',
description : 'A file.',
path: `${dirs.DownloadDir}/file.${extension}`,
},
};
return new Promise(async (next, error) => {
try {
let response = await RNFetchBlob.config(config)
.fetch(
method,
remoteUrl,
this.getDefaultHeaders()
);
next(response);
} catch (err) {
error(err);
}
});
}
In my Actions.js
export function openDocument(docPath, ext) {
return async (dispatch) => {
dispatch(fetchingFile());
APIHelpers.getRemoteFile(docPath, ext).then(async function(response) {
dispatch(successFetchingFile());
let status = response.info().status;
if (status == 200) {
const path = response.path();
setTimeout(() => {
FileViewer.open(path, {
showOpenWithDialog: true,
showAppsSuggestions: true,
})
.catch(error => {
dispatch(errorOpeningFile(error));
});
}, 100);
} else {
dispatch(invalidFile());
}
}).catch(function(err) {
dispatch(errorFetchingFile(err));
});
}
}
In my Screen.js
import { openDocument } from 'path/to/Actions';
render() {
return <Button
title={'View file'}
onPress={() => this.props.dispatchOpenDocument(doc.filepath, doc.extension)}
/>;
}
.
.
.
const mapDispatchToProps = {
dispatchOpenDocument: (docPath, ext) => openDocument(docPath, ext),
}

Are you downloading it from the web? I can see the pdf path is attached at the end of the error path.
For web URLs, the protocol ("http://", "https://") must be set accordingly!
Try to append appropriate schemes to your path. Check it out from the link mentioned below.

This can be done with 'rn-fetch-blob'
RNFetchBlob.android.actionViewIntent(fileLocation, mimeType);

Phonegap WebIntent cannot open / access a downloaded APK file

From my Phonegap App I am downloading my APK which happens with no issues but I cannot get the file installed once its there.
The following bit of code just fails during the WEB INTENT section which should install the APk but its having trouble reading the file.
var apkFilePath = cordova.file.externalApplicationStorageDirectory+'myapp.apk';
// Android UPDATE routine
function downloadApkAndroid(data) {
var permissions = cordova.plugins.permissions;
permissions.hasPermission(permissions.WRITE_EXTERNAL_STORAGE, function (status) {
if (!status.hasPermission) {
var errorCallback = function () {
alert("Error: app requires storage permission");
if (callBack && callBack !== null) {
callBack();
}
};
permissions.requestPermission(permissions.WRITE_EXTERNAL_STORAGE,
function (status) {
if (!status.hasPermission)
errorCallback();
else {
downloadFile();
}
},
errorCallback);
}
else {
downloadFile();
}
}, null);
}
function downloadFile(){
var fileTransfer = new FileTransfer();
var url = "https://myappurl.com/myapp.apk";
var uri = encodeURI(url);
var filePath = getFilePath();
fileTransfer.download(
uri,
apkFilePath,
function (entry) {
console.log("Download complete: " + entry.fullPath);
promptForUpdateAndroid(entry);
},
function (error) {
console.error("Download error source " + error.source);
console.error("Download error target " + error.target);
console.error("Download error code " + error.code);
},
false,
{
}
);
}
/*
* Uses the borismus webintent plugin
*/
function promptForUpdateAndroid(entry) {
console.log(apkFilePath);
window.plugins.webintent.startActivity(
{
action: window.plugins.webintent.ACTION_VIEW,
url: apkFilePath,
type: 'application/vnd.android.package-archive'
},
function () {
},
function () {
// alert('Failed to open URL via Android Intent.');
console.log("Failed to open URL via Android Intent. URL: " + entry.fullPath);
}
);
}

So figured this out by using cordova-plugin-file-opener2 and changing the promptForUpdateAndroid() to get rid of Web Intents:
var myFilePath = cordova.file.dataDirectory+'myApp.apk';
function promptForUpdateAndroid(entry) {
cordova.plugins.fileOpener2.open(
myFilePath,
'application/vnd.android.package-archive',
{
error : function(e) {
console.log('Error status: ' + e.status + ' - Error message: ' + e.message);
},
success : function () {
console.log('file opened successfully');
}
}
);
This instantly installed the app, though it didn't re-open once installed. I'm off to figure that out.

How can I submit a file in React Native?

I'm using fetch for requests, and I want to submit a file along with other data. How can I do so?
If it is not possible using fetch, what should I do then?
Thanks you guys.

react-native-fs
Has support for file upload on iOS
From the README:
// require the module
var RNFS = require('react-native-fs');
var uploadUrl = 'http://requestb.in/XXXXXXX'; // For testing purposes, go to http://requestb.in/ and create your own link
// create an array of objects of the files you want to upload
var files = [
{
name: 'test1',
filename: 'test1.w4a',
filepath: RNFS.DocumentDirectoryPath + '/test1.w4a',
filetype: 'audio/x-m4a'
}, {
name: 'test2',
filename: 'test2.w4a',
filepath: RNFS.DocumentDirectoryPath + '/test2.w4a',
filetype: 'audio/x-m4a'
}
];
var uploadBegin = (response) => {
var jobId = response.jobId;
console.log('UPLOAD HAS BEGUN! JobId: ' + jobId);
};
var uploadProgress = (response) => {
var percentage = Math.floor((response.totalBytesSent/response.totalBytesExpectedToSend) * 100);
console.log('UPLOAD IS ' + percentage + '% DONE!');
};
// upload files
RNFS.uploadFiles({
toUrl: uploadUrl,
files: files,
method: 'POST',
headers: {
'Accept': 'application/json',
},
fields: {
'hello': 'world',
},
begin: uploadBegin,
progress: uploadProgress
})
.then((response) => {
if (response.statusCode == 200) {
console.log('FILES UPLOADED!'); // response.statusCode, response.headers, response.body
} else {
console.log('SERVER ERROR');
}
})
.catch((err) => {
if(err.description === "cancelled") {
// cancelled by user
}
console.log(err);
});

How to download music that stored in http server in Angularjs

Let's say I have a API that stores some .mp3 music.
The sample link here:
https://118.69.201.34:8882/api/ApiMusic/Download?songId=2000
Now I want to write an API calling function in Angularjs to download the music to my Android devices with the song's Id number as in the link.
How can I do that? Please help :(

You can use the ngCordova FileTransfer library here: http://ngcordova.com/docs/plugins/fileTransfer/
Here's example code from that page, tweaked to your example URL:
document.addEventListener('deviceready', function () {
var fileid = "2000";
var url = "https://118.69.201.34:8882/api/ApiMusic/Download?songId=" + fileid;
var targetPath = cordova.file.documentsDirectory + fileid + ".mp3";
var trustHosts = true
var options = {};
$cordovaFileTransfer.download(url, targetPath, options, trustHosts)
.then(function(result) {
// Success!
}, function(err) {
// Error
}, function (progress) {
$timeout(function () {
$scope.downloadProgress = (progress.loaded / progress.total) * 100;
})
});
}, false);

I did it finally, here is my code. Just share for those who want to refer to this issue in the future. Thanks you guys for your answers
$scope.download = function(songId, songName) {
$ionicLoading.show({
template: 'Downloading...'
});
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, function (fs) {
fs.root.getDirectory(
"fMusic",
{
create: true
},
function (dirEntry) {
dirEntry.getFile(
songName + ".mp3",
{
create: true,
exclusive: false
},
function gotFileEntry(fe) {
var p = fe.toURL();
fe.remove();
ft = new FileTransfer();
ft.download(
encodeURI(APIUrl + songId),
p,
function (entry) {
$ionicLoading.hide();
$scope.mp3File = entry.toURL();
},
function (error) {
$ionicLoading.hide();
alert("Download Error Source --> " + error.source);
},
false,
null
);
},
function () {
$ionicLoading.hide();
console.log("Get the file failed");
}
);
}
);
},
function () {
$ionicLoading.hide();
console.log("Request for filesystem failed");
});
}

How to store and retrieve files in/from android app space?

I'm developing a cordova/phonegap app. Right now, I'm testing the app on Android.
If I include files (audio, video, ...) by default, I can access to that files indicating the "url" like audio/filesong.mp3 or video/filevideo.mp4.
But if I download files with the next code:
function downloadFile() {
var fileTransfer = new FileTransfer();
var uri = encodeURI("UrlOfTheFile");
var fileURL = "cdvfile://localhost/persistent/appcustomstorage/";
fileTransfer.download(
uri, fileURL + "file.extension", 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=="
}
});
}
I download the file in StorageRoot/appcustomstorage/file.extension
It is possible to store the file in the app package, i.e., in, for example, Android/data/com.example.app??
Or a method to get the Android/data/com.example.app url and then add the necessary folder?
Solution:
In this case I find all mp3 in the device. It works on Nexus 4.
index.html
<ul data-role="listview" data-inset="true" id="ulsongs">
</ul>
index JavaScript:
document.addEventListener("deviceready", onDeviceReady, false);
// device APIs are available
function onDeviceReady() {
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
}
function gotFS(fileSystem) {
FileSystem = fileSystem;
// Call to start to find all files
getFileSystem();
}
storageScript:
var FileSystem = null;
var AudioExtensions = [ '.mp3' ];// , '.wav', '.m4a' ];
var my_media = null;
function listDir(directoryEntry, level) {
if (level === undefined)
level = 0;
var directoryReader = directoryEntry.createReader();
directoryReader.readEntries(function(entries) { // success get files and
// folders
for ( var i = 0; i < entries.length; ++i) {
if (entries[i].name === '.')
continue;
if (entries[i].isDirectory) {
FileSystem.root.getDirectory(entries[i].fullPath.slice(1,
entries[i].fullPath.length), {
create : false
}, function(dirEntry) {
listDir(dirEntry, level + 1);
}, function(error) {
console.log('ERROR');
alert(error.code);
});
}
if (entries[i].isFile) {
var extension;
extension = entries[i].name.substr(entries[i].name
.lastIndexOf('.'));
if (entries[i].isFile === true
&& $.inArray(extension, AudioExtensions) >= 0) {
// Add a song to the list
$("#ulsongs").append(
"<li id='" + entries[i].fullPath + "'"
+ " data-icon=\"audio\"><a>"
+ entries[i].name + "</a></li>");
$('#ulsongs').listview('refresh');
}
}
}
}, function(error) { // error get files and folders
alert('Error. Code: ' + error.code);
});
// Action listener
$('#ulsongs li').click(function(e) {
pathsong = $(this).attr('id');
console.log('item clicked. Path: ' + pathsong);
if (typeof (pathsong) != 'undefined' && pathsong != null) {
// Stop previous song
if ((audio_status != null) && (audio_status == 2)) {
console.log('STOP AUDIO');
my_media.stop();
my_media.release();
}
// Play the audio file at url
my_media = new Media(pathsong,
// success callback
function() {
console.log("playAudio():Audio Success");
},
// error callback
function(err) {
console.log("playAudio():Audio Error: " + err);
}, status);
// Play audio
my_media.play();
}
});
}
var audio_status = null;
function status(stat) {
audio_status = stat;
}
/**
*
*/
function getFileSystem() {
console.log('entra getFileSystem');
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0,
function(fileSystem) { // success get file system
var sdcard = fileSystem.root;
sdcard.getDirectory('', {
create : false
}, function(dirEntry) {
listDir(dirEntry);
}, function(error) {
alert(error.code);
})
}, function(evt) { // error get file system
console
.log('ERROR GETTING FILE SYSTEM'
+ evt.target.error.code);
});
}
I create a list of mp3.
I use jQuery and jQueryMobile
Edit
The process may need a bit of time. It is recommended to show a loading popup.