Hi am trying to access image in assets/images/flower.png Am using react-native-fs but I tried different path but no luck. has anyone did this before and succeeded ?
var RNFS = require("react-native-fs");
this.base64RouteImage = await RNFS.readFile(
"../../../assets/images/flower.png",
"base64"
).then();
console.log("64 is " + base64data);
I tried below different path as below
/images/flower.png
app/assets/images/flower.png
/app/assets/images/flower.png
file://app/assets/images/flower.png
./assets/images/flower.png
import Flower from "../../../assets/images/flower.png";
../../../assets/images/flower.png
EDIT 1
I have added permission read/write internal/external permission in android
EDIT 2
I tried
RNFS.DocumentDirectoryPath + "/assets/images/flower.png"
but it says
error: ENOENT: /data/user/0/com.tipll/files/assets/images/flower.png (No such file or directory)
I need to access the images in react-native assets folder app/assets/images/flower.png
Still no luck
EDIT 3
my path reference from my current screen is like ../../../assets/images/flower.png
EDIT 4
EDIT 5
Am trying to access image from app/views/routes/view/Flower.js this Flower.js screen.
Any help will be appreciated.
Thanks in advance
To Access data from internal memory: Filepath "/storage/emulated/0/".
To Access data from external memory(SD-CARD): Filepath "/storage/0000-0000/".
Few questions arise here,
1) How is the SD-CARD name "0000-0000"?
Well, 0000-0000 is Volume Serial Number, it changes every time an SD-CARD is formatted. If you want to regulate it i.e you want to add your own Serial Number, check out this post Change Serial Number.
2) How do you now what your SD-CARD Serial Number is?
You can use file managers in Playstore to know your SD-Cards Serial Number and also explore this discussion.
If you want read from internal storage (of device) try this:
file:///storage/emulated/0/Pictures/flower.jpg
I guess that you want read from a folder in your rn project... You must provide the structure of your project
So try with require('../../../assets/images/flower.png')
or try with absolute path: require('MyApp/app/assets/images/flower.png')
Related
I'm fairly new to Dart and Flutter, and I'm having trouble to overwrite an existing assets image from a source image.
My attempt:
try {
File localFile = File('assets/images/myImage.png');
localFile.writeAsBytesSync(originFile.readAsBytesSync());
catch (e) {
log(e.toString());
}
I get:
[log] FileSystemException: Cannot open file, path = 'assets/images/myImage.png' (OS Error: No such file or directory, errno = 2)
I did define the assets folder in pubspec.yaml:
assets:
- assets/images/
Ok, so I've read somewhere that the asset file can be accessed like this:
import 'package:flutter/services.dart' show rootBundle;
final byteData = await rootBundle.load('assets/images/myImage.png');
But I don't know how to convert byteData to a File object that represents the actual file.
I think I'm missing something very basic here. Or maybe is there is a proper way to do this that has nothing to do with this approach?
Please help.
Thanks in advance!
If you want to write a file on a user device you should look here: https://flutter.dev/docs/cookbook/persistence/reading-writing-files
Shared preferences are a space in a phone where you app can write, so it's exactly what you want!
Assets are part of you app and are not meant to be modified within the app.
During a build, Flutter places assets into a special archive called
the asset bundle that apps read from at runtime. According to the flutter website
Hope this helps!
Using LogoImg.GetAttribute("src") I get the following scr:
https://scol.stage-next.sc.local/lspprofile/5a2e7338d6e9a927741175e2/image?id=5a2fbc98d6e9a9177c8c1592
But the real name of the file is: TestImage - 9fb0c49d-69b1-49ed-8c63-4283e405b781.jpg
If i enter the src in my browser i got the file with real name downloaded.
How can I get the real name of the file in selenium as I need it for test.
Well the task is solved by other means, i just compared the differences in src. But the responce to the question would be yet interesting.
As you are able to retrieve the src attribute as follows :
https://scol.stage-next.sc.local/lspprofile/5a2e7338d6e9a927741175e2/image?id=5a2fbc98d6e9a9177c8c1592
This is the reference to the resource stored in the Database. So it wouldn't be possible to retrive the name 9fb0c49d-69b1-49ed-8c63-4283e405b781.jpg before the file gets downloaded.
To ensure the download is completed and then to read the filename you will need to use either of the following :
glob.glob() or fnmatch :
https://stackoverflow.com/a/4296148/771848
Watchdog module to monitor changes with in a directory:
python selenium, find out when a download has completed?
I'm implementing Offline Playback with HLS Fairplay following the demo in the FairPlay Streaming Server SDK v4.0.1 that uses AVContentSessionKey.
I download three contents, each content is downloaded and persisted correctly, both the .movpkg and its content key on the documents directory, when I turn off the WIFI these three contents downloaded plays correctly without any problems, before playing Im using this code:
let urlAsset = element.urlAsset!
ContentKeyManager.shared.contentKeySession.addContentKeyRecipient(urlAsset)
if !urlAsset.resourceLoader.preloadsEligibleContentKeys {
urlAsset.resourceLoader.preloadsEligibleContentKeys = true
}
self.present(playerViewController, animated: true, completion: {
AssetPlaybackManager.sharedManager.setAssetForPlayback(urlAsset)
})
So far so good. But the problem is when I close the application (Home button to close applications) and then play the downloaded contents, only the last content downloaded plays correctly, the other ones (first and second) send these error on the console.
Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed"
UserInfo={NSUnderlyingError=0x1c065d760 {Error Domain=NSOSStatusErrorDomain Code=-16227 "(null)"},
NSLocalizedFailureReason=An unknown error occurred (-16227),
NSURL=file:///private/var/mobile/Containers/Data/Application/A950D8DB-B711-47E3-AAF5-C95CC9682430/Library/com.apple.UserManagedAssets.kkG8Ih/644986_7798B8476A473F68.movpkg/, NSLocalizedDescription=The operation could not be completed}
I double check the .movpkg with the keys in the documents directory and appears correctly
/Documents/.keys/one-key
/Documents/.keys/two-key
/Documents/.keys/three-key
Before the error occurs the ContentKeyDelegate is called and the key is loaded and passed to the request correctly.
if persistableContentKeyExistsOnDisk(withContentKeyIdentifier: assetIDString) {
let urlToPersistableKey = urlForPersistableContentKey(withContentKeyIdentifier: assetIDString)
guard let contentKey = FileManager.default.contents(atPath: urlToPersistableKey.path) else {
/
pendingPersistableContentKeyIdentifiers.remove(assetIDString)
return
}
/
Create an AVContentKeyResponse from the persistent key data to use for requesting a key for
decrypting content.
*/
let keyResponse = AVContentKeyResponse(fairPlayStreamingKeyResponseData: contentKey)
/
keyRequest.processContentKeyResponse(keyResponse)
return
}
If I print the contentKeyRecipients the three contents appears correctly
- (lldb) po
ContentKeyManager.shared.contentKeySession.contentKeyRecipients ▿ 3
elements
- 0 : AVURLAsset: 0x1c0234d40, URL = file:///private/var/mobile/Containers/Data/Application/E791A4DE-4261-46B7-A84D-D10B27035FAE/Library/com.apple.UserManagedAssets.kkG8Ih/539628_20469336224AA388.movpkg
- 1 : AVURLAsset: 0x1c0234fa0, URL = file:///private/var/mobile/Containers/Data/Application/E791A4DE-4261-46B7-A84D-D10B27035FAE/Library/com.apple.UserManagedAssets.kkG8Ih/644986_7798B8476A473F68.movpkg
- 2 : AVURLAsset: 0x1c42391c0, URL = file:///private/var/mobile/Containers/Data/Application/E791A4DE-4261-46B7-A84D-D10B27035FAE/Library/com.apple.UserManagedAssets.kkG8Ih/573744_62377F9549C45B93.movpkg
My tests are in iOS 11.1.2 and iOS 11.2 beta 2
I'm not sure what is happening, but seems to be a problem with the persisted key, I don't how if each content needs to be associated with one AVContentKeySession at time.
If someone faced a similar problem, any help would be appreciated.
Thanks in advance
I'm having similar issue.
however, since I need to support iOS 10, I'm not using the new AVContentKeyResponse class. Instead, I'm loading the persistent content key myself, and pass it to the loading request.
Anyway, I'm getting exact the same error as you and same behavior. One thing to note is that if I remove the code that loads persistent content key from disk, and always fetch the key from server, then everything works. But this defeats the purpose of "offline" playback...
So it seems like the system thinks the persistent content key is invalid...
Which TLLV you used on the server side to specify Rental Duration of the downloaded content? Did you use Content key duration TLLV or Offline Key TLLV? If you used Offline Key TLLV you need to double check that "Content ID" field is different for every downloaded movie.
We had encounter this error message, too.
It will happen when content exceed over expiration date which set in server side.
For example :
We give 10 minutes of expiration date for Video A
Download this Video A, and verify CKC delivery correctly (print log)
Play Video A without connection
Take a break (after 11 minutes), close App, and launch App again, select Video A to Play
Show below error message from AVPlayerItem.error.description:
Error Domain=AVFoundationErrorDomain Code=-11800
"The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-16227),
NSLocalizedDescription=The operation could not be completed, NSUnderlyingError=0x1d4257310
{Error Domain=NSOSStatusErrorDomain Code=-16227 "(null)"}}
You can refresh encrypted data again by
AVAssetResourceLoaderDelegate
or use AVContentSessionKey
Reference : https://developer.apple.com/videos/play/wwdc2018/507/
Make sure you set correct offline content identifier on a serverside. The identifier you set should be associated with the specific rendition/stream allowed by the license. This helped me.
Is there a way to reference the database.sqlite file without knowing the absolute path?
_db = QSqlDatabase::addDatabase("QSQLITE");
_db.setDatabaseName("/the/path/i/dont/know/database.sqlite");
I already tried to add the database.sqlite to the Resources folder and call it via qrc:, but apparently it is not possible to write to a resource file.
I also tried using QApplication::applicationDirPath();, but this would result in different paths depending on the user's OS. E.g. it appends MyApp.app/Contents/MacOS to the actual directory.
When you create a QSqlDatabase with SQLite as a backend you have two options:
Give an absolute path as a db name
Give a relative path: in this case the database will be saved in the directory of your binary.
So you must know absolute path of your db in your case.
edit
In the case you initially know where the database should be located you can either hardcode it (which is never wise) or you can create a configuration and load it using QSettings. For example:
QSettings settings;
QString dbPath = settings.readValue("DBPath", QString(/*fallback path*/)).toString();
//do smth with dbPath
Take a look further here
if you want to store the db per user you shout use this:
QDesktopServices::storageLocation(QDesktopServices::DataLocation)
this method returns the location where persistent application data can be stored.
for more information check this: http://doc.trolltech.com/4.5/qdesktopservices.html#storageLocation
In my Grails application I need to create a file in current system in which I need to save information fetched from table in database. How to do this from within controller action? I don't have any idea of it.
I have created file as
File file=new File("file name.txt")
file.createNewFile();
then I have wrote values of MySQL database table fields in it as:
file<<patient.id
file<<patient.name
.
.
.
it stores data like continuous text but I want to have a .doc file in which data should get stored in table. I found Apache's POI for creating doc file but I am not getting how it works and how I should use it.
Not sure exactly what you want to store in a file but below is an example of how to easly write a String to a file using Apache-commons-io Which should be included in grails
import org.apache.commons.io.FileUtils;
class SomeController{
def writeToFile = {
def data = getSomeStringData();
def fileStore = new File("./path/to/files/ControllerOutput_${new Date()}.txt");
fileStore.createNewFile();
FileUtils.writeStringToFile(fileStore, data);
println("your file was created # {fileStore.absolutePath} and is ${fileStore.length()} bytes");
}
}
Does this help? If not, you need to explain exactly what your looking for.
This is a comment to Michael's answer (unfortunately I still don't have the reputation to reply on answers).
If you're struggling around the problem how to specifiy the relative path from within your controller's context, this might help you:
So if you have following folder you want to read/write files from/into"..
/myproject/web-app/temp/
you can access the file like this:
import org.codehaus.groovy.grails.commons.ApplicationHolder as AH
// getResource references to the web-app folder as root folder
Resource resource = AH.getApplication().getParentContext().getResource("/temp/myfile.txt)