I am creating a Xamarin iOS share extension.
Everything works fine, but when i try to change something on UI, the app crash. I have no error message. In fact, i want to display something in textview if something fails when the user push post button. I have also tried to put an alertview or to create my own custom post button.
Here is the code:
NSExtensionItem imageItem = ExtensionContext.InputItems[0];
if (imageItem == null)
return;
NSItemProvider imageItemProvider = imageItem.Attachments[0];
if (imageItemProvider == null)
return;
if (!imageItemProvider.HasItemConformingTo(UTType.Image))
return;
TextView.Text = "ok this works here";
imageItemProvider.LoadItem(UTType.Image, null, (NSObject image, NSError error) =>
{
var st = new MemoryStream();
if (image == null)
{
return;
}
var url = image as NSUrl;
if (url == null)
{
return;
}
var img = UIImage.LoadFromData(NSData.FromUrl(url));
img.AsPNG().AsStream().CopyTo(st);
Task.Run(async () =>
{
InvokeOnMainThread(() =>
{
this.TextView.Text = "CODE CRASH HERE";
this.TextView.TextColor = UIColor.Red;
});
}).GetAwaiter().GetResult();
});
Related
I'm using .NET Core 3.1 but I encountered a weird problem!
the problem is any uploaded image the size of it is 0KB
when I restart the IIS and trying again will upload it without any problem but after that, the problem returns back.
I tried this solution by making my code async but with no luck
I changed my system file to be accessible by my Application pool user but with no luck
Here is my code :
public Document shareWithUsers([FromForm] CreateDocumentDto documentDto)
{
List<CreateUserType1DocumentsDto> listOfCreateUserType1Documents = new List<CreateUserType1DocumentsDto>();
List<CreateHDDocumentsDto> listOfCreateHDDocuments = new List<CreateHDDocumentsDto>();
if (documentDto.listOfUserType1Documents != null)
{
foreach (var item in documentDto.listOfUserType1Documents)
{
listOfCreateUserType1Documents.Add(JsonConvert.DeserializeObject<CreateUserType1DocumentsDto>(item));
}
}
else if (documentDto.listOfHDDocuments != null)
{
foreach (var item in documentDto.listOfHDDocuments)
{
listOfCreateHDDocuments.Add(JsonConvert.DeserializeObject<CreateHDDocumentsDto>(item));
}
}
if (documentDto.sharedText == null)
{
if (documentDto.document != null) //that mean user upload file
{
if (documentDto.document.Length > 0)
{
var UploadedFilesPath = Path.Combine(hosting.WebRootPath/*wwwroot path*/, "UploadedFiles" /*folder name in wwwroot path*/);
var filePath = Path.Combine(UploadedFilesPath, documentDto.document.FileName);
//documentDto.docUrl = filePath;
var documentObject = new Document();
using (var stream = new FileStream(filePath, FileMode.Create))
{
documentDto.document.CopyToAsync(stream);// Use stream
}
if (documentDto.listOfUserType1Documents != null)
{
documentObject.listOfUserType1Documents = ObjectMapper.Map<List<UserType1Documents>>(listOfCreateUserType1Documents);
}
else if (documentDto.listOfHDDocuments != null)
{
documentObject.listOfHDDocuments = ObjectMapper.Map<List<HDDocuments>>(listOfCreateHDDocuments);
}
documentObject.docTtitle = documentDto.docTtitle;
documentObject.docName = documentDto.docName;
documentObject.docUrl = filePath;
return _repository.Insert(documentObject);
}
}
}
else
{ //that mean user upload text
var documentObject = new Document();
if (documentDto.listOfUserType1Documents != null)
{
documentObject.listOfUserType1Documents = ObjectMapper.Map<List<UserType1Documents>>(listOfCreateUserType1Documents);
}
else if (documentDto.listOfHDDocuments != null)
{
documentObject.listOfHDDocuments = ObjectMapper.Map<List<HDDocuments>>(listOfCreateHDDocuments);
}
documentObject.sharedText = documentDto.sharedText;
return _repository.Insert(documentObject);
}
return null;
}
My code works only if I change both of them (CopyTo and Insert ) to Async with await
await CopyToAsync()
await InsertAsync()
I have a Notification Service Extension and an AppGroup. I save a photo from camera in the PCL project and copy it to the App Group Container (shared folder).
In the Notification Service Extension I try to download the photo from the App Group container and attach it to the notification but it just does not display in the notification.
I also cannot debug the Service Extension to see what is going. As far as I know that is not possible currently still in Xamarin unless someone can correct me on that please.
Here is the code:
1.in my PCL I save the photo to the AppGroup when a save button is pressed:
private void ButtonSavePhoto_Clicked(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(photoFilePath))
{
Preferences.Set(AppConstants.CUSTOM_PICTURE_FILE_PATH, photoFilePath);
Preferences.Set(AppConstants.CUSTOM_PHOTO_SET_KEY, true);
if (Device.RuntimePlatform == Device.iOS)
{
bool copiedSuccessfully = DependencyService.Get<IPhotoService>().CopiedFileToAppGroupContainer(photoFilePath);
if (copiedSuccessfully)
{
var customPhotoDestPath = DependencyService.Get<IPhotoService>().GetAppContainerCustomPhotoFilePath();
// save the path of the custom photo in the AppGroup container to pass to Notif Extension Service
DependencyService.Get<IGroupUserPrefs>().SetStringValueForKey("imageAbsoluteString", customPhotoDestPath);
// condition whether to use custom photo in push notification
DependencyService.Get<IGroupUserPrefs>().SetBoolValueForKey("isCustomPhotoSet", true);
}
}
buttonSavePhoto.IsEnabled = false;
}
}
2.in my iOS project, Dependency injection calls this method when pressing save button:
public bool CopiedFileToAppGroupContainer(string filePath)
{
bool success = false;
string suiteName = "group.com.company.appName";
var appGroupContainerUrl = NSFileManager.DefaultManager.GetContainerUrl(suiteName);
var appGroupContainerPath = appGroupContainerUrl.Path;
var directoryNameInAppGroupContainer = Path.Combine(appGroupContainerPath, "Pictures");
var filenameDestPath = Path.Combine(directoryNameInAppGroupContainer, AppConstants.CUSTOM_PHOTO_FILENAME);
try
{
Directory.CreateDirectory(directoryNameInAppGroupContainer);
if (File.Exists(filenameDestPath))
{
File.Delete(filenameDestPath);
}
File.Copy(filePath, filenameDestPath);
success = true;
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
return success;
}
Now the path for the photo in the App Group container is:
/private/var/mobile/Containers/Shared/AppGroup/12F209B9-05E9-470C-9C9F-AA959D940302/Pictures/customphoto.jpg
3.Finally in the Notification Service Extension I try to attach the photo to the push notification:
public override void DidReceiveNotificationRequest(UNNotificationRequest request, Action<UNNotificationContent> contentHandler)
{
ContentHandler = contentHandler;
BestAttemptContent = (UNMutableNotificationContent)request.Content.MutableCopy();
string imgPath;
NSUrl imgUrl;
string notificationBody = BestAttemptContent.Body;
string notifBodyInfo = "unknown";
string suiteName = "group.com.company.appname";
NSUserDefaults groupUserDefaults = new NSUserDefaults(suiteName, NSUserDefaultsType.SuiteName);
string pref1_value = groupUserDefaults.StringForKey("user_preference1");
string[] notificationBodySplitAtDelimiterArray = notificationBody.Split(',');
userPrefRegion = notificationBodySplitAtDelimiterArray[0];
bool isCustomAlertSet = groupUserDefaults.BoolForKey("isCustomAlert");
bool isCustomPhotoSet = groupUserDefaults.BoolForKey("isCustomPhotoSet");
string alarmPath = isCustomAlertSet == true ? "customalert.wav" : "default_alert.m4a";
if (isCustomPhotoSet)
{
// this is the App Group url of the custom photo saved in PCL
imgPath = groupUserDefaults.StringForKey("imageAbsoluteString");
}
else
{
imgPath = null;
}
if (imgPath != null )
{
imgUrl = NSUrl.FromString(imgPath);
}
else
{
imgUrl = null;
}
if (!string.IsNullOrEmpty(pref1_value))
{
if (BestAttemptContent.Body.Contains(pref1_value))
{
if (imgUrl != null)
{
// download the image from the AppGroup Container
var task = NSUrlSession.SharedSession.CreateDownloadTask(imgUrl, (tempFile, response, error) =>
{
if (error != null)
{
ContentHandler(BestAttemptContent);
return;
}
if (tempFile == null)
{
ContentHandler(BestAttemptContent);
return;
}
var cache = NSSearchPath.GetDirectories(NSSearchPathDirectory.CachesDirectory, NSSearchPathDomain.User, true);
var cachesFolder = cache[0];
var guid = NSProcessInfo.ProcessInfo.GloballyUniqueString;
var fileName = guid + "customphoto.jpg";
var cacheFile = cachesFolder + fileName;
var attachmentUrl = NSUrl.CreateFileUrl(cacheFile, false, null);
NSError err = null;
NSFileManager.DefaultManager.Copy(tempFile, attachmentUrl, out err);
if (err != null)
{
ContentHandler(BestAttemptContent);
return;
}
UNNotificationAttachmentOptions options = null;
var attachment = UNNotificationAttachment.FromIdentifier("image", attachmentUrl, options, out err);
if (attachment != null)
{
BestAttemptContent.Attachments = new UNNotificationAttachment[] { attachment };
}
});
task.Resume();
}
BestAttemptContent.Title = "My Custom Title";
BestAttemptContent.Subtitle = "My Custom Subtitle";
BestAttemptContent.Body = "Notification Body";
BestAttemptContent.Sound = UNNotificationSound.GetSound(alarmPath);
}
}
else
{
pref1_value = "error getting extracting user pref";
}
// finally display customized notification
ContentHandler(BestAttemptContent);
}
/private/var/mobile/Containers/Shared/AppGroup/12F209B9-05E9-470C-9C9F-AA959D940302/Pictures/customphoto.jpg
From shared code, when image getting from AppGroup .You can check the file path whether work in this project.
imgPath = groupUserDefaults.StringForKey("imageAbsoluteString");
If not getting file from this path. You can get Url from AppGroup directly.Here is a sample as follow:
var FileManager = new NSFileManager();
var appGroupContainer = FileManager.GetContainerUrl("group.com.company.appName");
NSUrl fileURL = appGroupContainer.Append("customphoto.jpg", false);
And if fileURL can not be directly used, also can convert to NSData and save to local file system. This also can be a try.
Here is a sample below that grabs from local file system:
public static void Sendlocalnotification()
{
var localURL = "...";
NSUrl url = NSUrl.FromString(localURL) ;
var attachmentID = "image";
var options = new UNNotificationAttachmentOptions();
NSError error;
var attachment = UNNotificationAttachment.FromIdentifier(attachmentID, url, options,out error);
var content = new UNMutableNotificationContent();
content.Attachments = new UNNotificationAttachment[] { attachment };
content.Title = "Good Morning ~";
content.Subtitle = "Pull this notification ";
content.Body = "reply some message-BY Ann";
content.CategoryIdentifier = "message";
var trigger1 = UNTimeIntervalNotificationTrigger.CreateTrigger(0.1, false);
var requestID = "messageRequest";
var request = UNNotificationRequest.FromIdentifier(requestID, content, trigger1);
UNUserNotificationCenter.Current.AddNotificationRequest(request, (err) =>
{
if (err != null)
{
Console.Write("Notification Error");
}
});
}
I'm a beginner in node and I'm trying to build a simple console menu. I kept searching for this but coulnd't find a proper answer.
When I run the script I want to display a menu and ask the user to enter an option. After he chooses, I perform an action then display the menu again.
I tried using a while loop but it's blocking my program.
Here's an example of what I'm trying to achieve:
int userRes = -1;
while(userRes != 0){
console.log("Option 1")
console.log("Option 2")
console.log("Option 3")
userRes = readLineSync.question("Pick an option");
if(userRes == 1){
doSomething();
}else if (userRes == 2){
doSomethingElse();
}
}
EDIT: Actual code bellow. As you can see I use stomp. The while loop displays my menu and the action inside the if statement gets executed.
The problem is, when stomp sends back the response my code in the subscribe function is not being executed.
I tried without a while (just the action) and it works perfectly.
var Stomp = require("stomp-client");
const readlineSync = require("readline-sync");
var client = new Stomp(host, 61613);
function conn(res,req){
client.connect(function(sessionId) {
client.subscribe("/queue/" + res, function(body, headers) {
console.log(body);
});
var res = -1;
while (res != 0) {
displayMenu();
var res = readlineSync.question("Introduceti o optiune: ");
if (res == 1) {
client.publish("/queue/" + req, "test");
} else if (res == 0) {
process.exit();
}
}
});
}
function displayMenu() {
console.log(
"Option one\n Option two\n 0 for exit";
);
}
You can use this code
const readLineSync = require('readline-sync')
let userRes;
while (userRes !== '0') {
console.log("Option 1")
console.log("Option 2")
console.log("Option 3")
userRes = readLineSync.question("Pick an option");
if (userRes === '1') {
doSomething()
} else if (userRes === '2') {
doSomethingElse()
}
}
I have a monotouch dialog view controller. I have a number of nested root elements
public RootElement LoginSection()
{
//var rootSection = new Section("");
var root = new RootElement ("I'm already a member");
EntryElement emailEnt = new EntryElement ("Login","Username or Email","");
EntryElement passwdEnt = new EntryElement ("Password","Password","",true);
StyledStringElement loginBtn = new StyledStringElement ("Login"){
Accessory = UITableViewCellAccessory.DetailDisclosureButton
};
Section loginDetails = new Section("Your Details"){emailEnt,passwdEnt,loginBtn};
loginBtn.Tapped += () => {
var result = ApiOperations.ApiValidateLoginCredentials (emailEnt.Value, passwdEnt.Value);
if (result) {
var login = DataOperations.DbGetLogin ();
//first time user so we need to save their details into the db
if (login == null) {
} else {
BTProgressHUD.Show ("Logging In", -1, BTProgressHUD.MaskType.Black);
BTProgressHUD.InvokeInBackground (delegate {
ApiOperations.QrCode (login.ConsumerId);
ApiOperations.ApiConsumer (login.ConsumerId);
AuthenicatedActionCompleted.Invoke (this, new EventArgs ());
BTProgressHUD.Dismiss ();
});
}
} else {
//didnt work
using (var alert = new UIAlertView ("Unable to login", "Please try again.", null, "OK", null))
alert.Show ();
}
};
root.Add (loginDetails);
return root;
}
My problem is the the length of each of the element titles. My top level root title is also long e.g. Welcome to my application
If I tap on an rootelement above the back button shows "welcome to...." ideally I would like the button to show "back" vs the long string.
Is it possible to update this?
Ok solved it. If anyone else has the same problem this worked for me.
The last line is the trick.
public override void LoadView ()
{
base.LoadView ();
View.BackgroundColor =UIColor.Clear;
TableView.BackgroundView = null;
var background = UIImage.FromBundle(Resources.BackgroundImagePath);
ParentViewController.View.BackgroundColor = UIColor.FromPatternImage (background);
this.NavigationItem.BackBarButtonItem = new UIBarButtonItem ("Back", UIBarButtonItemStyle.Plain, null);
}
I'm trying to create a simple chrome extension using the following google RSS reader sample,
http://code.google.com/chrome/extensions/samples.html#597015d3bcce3da693b02314afd607bec4f55291
I can add links in the pop-up window that open tabs, but not from the feeds themselves.
Looping through the items in the feed, grabbing title tags and link tags, I want the title to link the the appropriate sites
var entries = doc.getElementsByTagName('item');
var count = Math.min(entries.length, maxFeedItems);
for (var i = 0; i < count; i++) {
item = entries.item(i);
// Grab the title for the feed item.
var itemTitle = item.getElementsByTagName('title')[0];
if (itemTitle) {
itemTitle = itemTitle.textContent;
} else {
itemTitle = "Unknown title";
}
// Grab the link for this feed item
var itemLink = item.getElementsByTagName('link')[0];
if (itemLink) {
itemLink = itemLink.textContent;
} else {
itemLink = "Unknown link";
}
var title = document.createElement("a");
title.className = "item_title";
title.innerText = itemTitle; //display title in iframe
title.addEventListener("click", titleLink); // should open link when clicking on title, but does not.
}
// -------------------------------------------------------------------
// Show |url| in a new tab.
function showUrl(url) {
// Only allow http and https URLs.
if (url.indexOf("http:") != 0 && url.indexOf("https:") != 0) {
return;
}
chrome.tabs.create({url: url});
}
function moreStories(event) {
showUrl(moreStoriesUrl);
}
function titleLink(event) {
showUrl(itemLink);
}
Any thoughts on why this is not working.
If I replace title.addEventListener("click", titleLink); with title.addEventListener("click", moreStories); each title will link to moreStories, I cannot get each title to link to itemLink.
Thanks
Its a bit hard to answer your question without the whole code, but Ill give it a shot ;)
First up, titleLink() isnt going to work because itemLink isnt known. When you create title (the link) you should of attached it to that...say title.href=itemLink then in tiltleLinks you could access that href with showUrl(event.currentTarget.href)
Also did you fix the error in that example?...if not then change frameLoaded to....
function frameLoaded() {
var links = document.getElementsByTagName("A");
for (i = 0; i < links.length; i++) {
var clssName = links[i].className;
if (clssName != "item_title" && clssName != "open_box") {
links[i].addEventListener("click", showStory);
}
}
window.addEventListener("message", messageHandler);
}
If you still have probs could you attach the whole code so I can see what your doing and Ill give you a hand.
Thank you very much for your help.
code title.href=itemLink and code showUrl(event.currentTarget.href) was exactly what I needed.
For completeness, here is the full code,
<script id="iframe_script">
function reportHeight() {
var msg = JSON.stringify({type:"size", size:document.body.offsetHeight});
parent.postMessage(msg, "*");
}
function frameLoaded() {
var links = document.getElementsByTagName("A");
for (i = 0; i < links.length; i++) {
var class = links[i].className;
if (class != "item_title" && class != "open_box") {
links[i].addEventListener("click", showStory);
}
}
window.addEventListener("message", messageHandler);
}
function showStory(event) {
var href = event.currentTarget.href;
parent.postMessage(JSON.stringify({type:"show", url:href}), "*");
event.preventDefault();
}
function messageHandler(event) {
reportHeight();
}
</script>
<script>
// Feed URL.
var feedUrl = 'http://localhost/newsfeed.xml';
// The XMLHttpRequest object that tries to load and parse the feed.
var req;
function main() {
req = new XMLHttpRequest();
req.onload = handleResponse;
req.onerror = handleError;
req.open("GET", feedUrl, true);
req.send(null);
}
// Handles feed parsing errors.
function handleFeedParsingFailed(error) {
var feed = document.getElementById("feed");
feed.className = "error";
feed.innerText = "Error: " + error;
}
// Handles errors during the XMLHttpRequest.
function handleError() {
handleFeedParsingFailed('Failed to fetch RSS feed.');
}
// Handles parsing the feed data we got back from XMLHttpRequest.
function handleResponse() {
var doc = req.responseXML;
if (!doc) {
handleFeedParsingFailed("Not a valid feed.");
return;
}
buildPreview(doc);
}
// The maximum number of feed items to show in the preview.
var maxFeedItems = 10;
// Where the more stories link should navigate to.
var moreStoriesUrl;
function buildPreview(doc) {
// Get the link to the feed source.
var link = doc.getElementsByTagName("link");
var parentTag = link[0].parentNode.tagName;
if (parentTag != "item" && parentTag != "entry") {
moreStoriesUrl = link[0].textContent;
}
// Setup the title image.
var images = doc.getElementsByTagName("image");
var titleImg;
if (images.length != 0) {
var urls = images[0].getElementsByTagName("url");
if (urls.length != 0) {
titleImg = urls[0].textContent;
}
}
var img = document.getElementById("title");
// Listen for mouse and key events
if (titleImg) {
img.src = titleImg;
if (moreStoriesUrl) {
document.getElementById("title_a").addEventListener("click",moreStories);
document.getElementById("title_a").addEventListener("keydown",
function(event) {
if (event.keyCode == 13) {
moreStories(event);
}});
}
} else {
img.style.display = "none";
}
// Construct the iframe's HTML.
var iframe_src = "<!doctype html><html><head><script>" +
document.getElementById("iframe_script").textContent + "<" +
"/script></head><body onload='frameLoaded();' " +
"style='padding:0px;margin:0px;'>";
var feed = document.getElementById("feed");
// Set ARIA role indicating the feed element has a tree structure
feed.setAttribute("role", "tree");
var entries = doc.getElementsByTagName('item');
var count = Math.min(entries.length, maxFeedItems);
for (var i = 0; i < count; i++) {
item = entries.item(i);
// Grab the title for the feed item.
var itemTitle = item.getElementsByTagName('title')[0];
if (itemTitle) {
itemTitle = itemTitle.textContent;
} else {
itemTitle = "Unknown title";
}
// Grab the link for the feed item.
var itemLink = item.getElementsByTagName('link')[0];
if (itemLink) {
itemLink = itemLink.textContent;
} else {
itemLink = "Unknown link";
}
var item = document.createElement("div");
var title = document.createElement("a");
title.innerText = itemTitle; //display title in iframe
title.href=itemLink;
title.addEventListener("click", titleLink);
item.appendChild(title);
feed.appendChild(item);
}
if (moreStoriesUrl) {
var more = document.createElement("a");
more.className = "more";
more.innerText = "***Site Main Page*** \u00BB";
more.tabIndex = 0;
more.addEventListener("click", moreStories);
more.addEventListener("keydown", function(event) {
if (event.keyCode == 13) {
moreStories(event);
}});
feed.appendChild(more);
}
}
// -------------------------------------------------------------------
// Show |url| in a new tab.
function showUrl(url) {
// Only allow http and https URLs.
if (url.indexOf("http:") != 0 && url.indexOf("https:") != 0) {
return;
}
chrome.tabs.create({url: url});
}
// -------------------------------------------------------------------
function moreStories(event) {
showUrl(moreStoriesUrl);
}
function titleLink(event) {
showUrl(event.currentTarget.href);
}
function keyHandlerShowDesc(event) {
// Display content under heading when spacebar or right-arrow pressed
// Hide content when spacebar pressed again or left-arrow pressed
// Move to next heading when down-arrow pressed
// Move to previous heading when up-arrow pressed
if (event.keyCode == 32) {
showDesc(event);
} else if ((this.parentNode.className == "item opened") &&
(event.keyCode == 37)) {
showDesc(event);
} else if ((this.parentNode.className == "item") && (event.keyCode == 39)) {
showDesc(event);
} else if (event.keyCode == 40) {
if (this.parentNode.nextSibling) {
this.parentNode.nextSibling.children[1].focus();
}
} else if (event.keyCode == 38) {
if (this.parentNode.previousSibling) {
this.parentNode.previousSibling.children[1].focus();
}
}
}
function showDesc(event) {
var item = event.currentTarget.parentNode;
var items = document.getElementsByClassName("item");
for (var i = 0; i < items.length; i++) {
var iframe = items[i].getElementsByClassName("item_desc")[0];
if (items[i] == item && items[i].className == "item") {
items[i].className = "item opened";
iframe.contentWindow.postMessage("reportHeight", "*");
// Set the ARIA state indicating the tree item is currently expanded.
items[i].getElementsByClassName("item_title")[0].
setAttribute("aria-expanded", "true");
iframe.tabIndex = 0;
} else {
items[i].className = "item";
iframe.style.height = "0px";
// Set the ARIA state indicating the tree item is currently collapsed.
items[i].getElementsByClassName("item_title")[0].
setAttribute("aria-expanded", "false");
iframe.tabIndex = -1;
}
}
}
function iframeMessageHandler(e) {
// Only listen to messages from one of our own iframes.
var iframes = document.getElementsByTagName("IFRAME");
for (var i = 0; i < iframes.length; i++) {
if (iframes[i].contentWindow == e.source) {
var msg = JSON.parse(e.data);
if (msg) {
if (msg.type == "size") {
iframes[i].style.height = msg.size + "px";
}
else if (msg.type == "show") {
var url = msg.url;
if (url.indexOf("http://localhost/index.html") == 0) {
// If the URL is a redirect URL, strip of the destination and go to
// that directly. This is necessary because the Google news
// redirector blocks use of the redirects in this case.
var index = url.indexOf("&url=");
if (index >= 0) {
url = url.substring(index + 5);
index = url.indexOf("&");
if (index >= 0)
url = url.substring(0, index);
}
}
showUrl(url);
}
}
return;
}
}
}
window.addEventListener("message", iframeMessageHandler);
</script>
Thanks again for the help.
-Mike