I am developing a simple app for windows 8. In My app I want the start tile to show images from local host that I ship with my app.
for example I have kept my images on /images/tile1.jpg like wise.
and my xml code is
<tile>
<visual>
<binding template="TileWideImage">
<image id="1" src ="http://localhost/images/tile1.jpg" />
</binding>
</visual>
which is present at /tile1.xml likewise
and my default.js code is
// For an introduction to the Blank template, see the following documentation:
// http://go.microsoft.com/fwlink/?LinkId=232509
(function () {
"use strict";
WinJS.Binding.optimizeBindingReferences = true;
var app = WinJS.Application;
var activation = Windows.ApplicationModel.Activation;
app.onactivated = function (args) {
if (args.detail.kind === activation.ActivationKind.launch) {
if (args.detail.previousExecutionState !== activation.ApplicationExecutionState.terminated) {
var notifications = Windows.UI.Notifications;
var recurrence = notifications.PeriodicUpdateRecurrence.halfHour;
var urls = [
new Windows.Foundation.Uri("http://localhost/tile1.xml"),
new Windows.Foundation.Uri("http://localhost/tile2.xml"),
new Windows.Foundation.Uri("http://localhost/tile3.xml"),
new Windows.Foundation.Uri("http://localhost/tile4.xml")
];
notifications.TileUpdateManager.createTileUpdaterForApplication().enableNotificationQueue(true);
notifications.TileUpdateManager.createTileUpdaterForApplication().startPeriodicUpdateBatch(urls, recurrence);
} else {
// TODO: This application has been reactivated from suspension.
// Restore application state here.
}
args.setPromise(WinJS.UI.processAll());
}
};
app.oncheckpoint = function (args) {
// TODO: This application is about to be suspended. Save any state
// that needs to persist across suspensions here. You might use the
// WinJS.Application.sessionState object, which is automatically
// saved and restored across suspension. If you need to complete an
// asynchronous operation before your application is suspended, call
// args.setPromise().
};
app.start();
})();
I am just unable to figure out what's wrong with the code. Please help.
Well, you can't. Loopback is not permitted, so your app won't pass certification if you're using a localhost service.
Can you deliver the images with the app itself? Alternatively, set up an external service to host your images and tiles. You really only need something like Windows Azure blob storage, don't even need to host a web service.
Lastly, you'll want to make sure you ALWAYS include a square tile image. The user always has control, so they may choose not to display your app as a wide tile.
Related
Hi I am new to nativescript and i am trying to select video files, i was trying to use nativescript-mediafilepicker, it successfully opens the folders but i am not sure how to select a file using the same programatically.
let mediafilepicker = new Mediafilepicker();
mediafilepicker.openImagePicker(options);
mediafilepicker.on("getFiles", function (res) {
let results = res.object.get('results');
console.dir(results);
})
mediafilepicker.on("error", function (res) {
let msg = res.object.get('msg');
console.log(msg);
});
mediafilepicker.on("cancel", function (res) {
let msg = res.object.get('msg');
console.log(msg);
});
Thanks in advance
You won't have any control on the selection UI / videos as it will be a system or third party app that was opened through Intent, which is totally outside your app context.
If you like more control over every user action in picker UI, then you will probably have to build one yourself. There are few open source iOS / Android libraries that may probably support this feature, you can extend them to NativeScript if you are familiar with plugins architecture.
I have a screen where we have 4 tabs, each tab should be displayed as per the login priority.
Ex:Department,Role,Employee,Screen are the tabs.
Each tab is having buttons to add,edit,remove the data.
by default when i log with any user its going to the first tab, but not all the users are having the first tab as their requirement.
how can i resolve this to do it dynamically in html client application
As covered towards the end of the following LightSwitch Team blog post, you can programmatically change the tab by using the screen.showTab method:
Creating a wizard-like experience for HTML client (Andy Kung)
However, in order to use this showTab API command when your screen is loading, its use needs to be delayed until the screen has fully displayed. This can be achieved in your screen's created method by using a combination of the jQuery mobile pagechange event (as the LightSwitch HTML Client uses jQuery mobile) and a setTimeout with a zero timeout (to delay the showTab until the loading screen is rendered).
The following shows a brief example of how you can use this approach to dynamically set the initial screen tab:
myapp.BrowseScreen.created = function (screen) {
var initialTabName = localStorage.getItem("Rolename") + "Tab";
$(window).one("pagechange", function (e, data) {
setTimeout(function () {
screen.showTab(initialTabName);
});
});
};
Based on your earlier post it appears that you're using LocalStorage to track your logged in user and their role.
On this basis, the above example assumes that the user's role will be the factor dictating the tab they are shown when the screen loads (the screen is named BrowseScreen in the above example).
It also assumes that your tabs are named after each employee role (suffixed with the text 'Tab') e.g. a user who is assigned the role 'DepartmentManager' would be directed to a tab called 'DepartmentManagerTab'.
Whilst slightly more involved, if you'd prefer to avoid the pagechange and setTimeout it's possible to customise the LightSwitch library to introduce a new navigationComplete screen event. This new event is ideal for executing any operations dependent upon the screen having fully rendered (such as navigating to a different tab using the showTab function).
If you'd like to introduce this additional event, you'll need to reference the un-minified version of the LightSwitch library by making the following change in your HTML client's default.htm file (to remove the .min from the end of the library script reference):
<!--<script type="text/javascript" src="Scripts/msls-?.?.?.min.js"></script>-->
<script type="text/javascript" src="Scripts/msls-?.?.?.js"></script>
The question marks in the line above will relate to the version of LightSwitch you're using.
You'll then need to locate the section of code in your Scripts/msls-?.?.?.js file that declares the completeNavigation function and change it as follows:
function completeNavigation(targetUnit) {
msls_notify(msls_shell_NavigationComplete, { navigationUnit: targetUnit });
var screen = targetUnit.screen;
var intialNavigation = !screen.activeTab;
var selectedTab = targetUnit.__pageName;
if (screen.activeTab !== selectedTab) {
callNavigationUnitScreenFunction(targetUnit, "navigationComplete", [intialNavigation, selectedTab]);
screen.activeTab = selectedTab; // Set at the end of the process to allow the previous selection to be referenced (activeTab)
}
}
function callNavigationUnitScreenFunction(navigationUnit, functionName, additionalParameters) {
var screenObject = navigationUnit.screen;
var constructorName = "constructor";
var _ScreenType = screenObject[constructorName];
if (!!_ScreenType) {
var fn = _ScreenType[functionName];
if (!!fn) {
return fn.apply(null, [screenObject, navigationUnit].concat(additionalParameters));
}
}
}
You can then use this new event in your screens as follows:
myapp.BrowseScreen.navigationComplete = function (screen, navigationUnit, intialNavigation, selectedTab) {
if (intialNavigation) {
var initialTabName = localStorage.getItem("Rolename") + "Tab";
screen.showTab(initialTabName);
}
};
This event fires whenever a navigation event completes (including a change of tab) with the initialNavigation parameter being set to true upon the initial load of the screen and the selectedTab parameter reflecting the selected tab.
Although modification to the LightSwitch library aren't uncommon with some of the more seasoned LightSwitch developers, if you decide to go down this path you'll need to thoroughly test the change for any adverse side effects. Also, if you upgrade your version of LightSwitch, you'll need to repeat the library modification in the new version.
I'm building a web app with AngularJS that will allow users to upload their own images. Right now all of my data is text based, so I am storing the text based data in Firebase. As far as I know, Firebase can't store images. What I want to do is store the user generated images somewhere simple (I'm thinking Amazon S3 or even Dropbox) and then reference the images via unique URLs, which I would store as text in Firebase.
My questions:
Does this seem like a valid approach?
Any recommended services for hosting the images?
How to upload an image to the hosting service and get the image's unique URL?
Right now I am allowing users to upload images on the front end with the following code, just not sure what to do with the images once I have them. Would appreciate any help, I'm very new to this!
HTML
<output id="list"></output>
<input type="file" id="files" name="files[]" class="button" multiple />
Upload Pictures</i>
Angular Controller
$scope.getImages = function(){
$("input[type='file']").trigger('click');
}
function handleFileSelect(evt) {
var files = evt.target.files; // FileList object
// Loop through the FileList and render image files as thumbnails.
for (var i = 0, f; f = files[i]; i++) {
console.log(f);
// Only process image files.
if (!f.type.match('image.*')) {
continue;
}
var reader = new FileReader();
// Closure to capture the file information.
reader.onload = (function(theFile) {
return function(e) {
// Render thumbnail.
var span = document.createElement('span');
span.innerHTML = ['<img class="thumb" src="', e.target.result,
'" title="', escape(theFile.name), '"/>'].join('');
document.getElementById('list').insertBefore(span, null);
};
})(f);
// Read in the image file as a data URL.
reader.readAsDataURL(f);
}
}
document.getElementById('files').addEventListener('change', handleFileSelect, false);
You could use a service like Cloudinary to host images uploaded by your users. There are Angular directives that making using the service pretty easy. You will need a small server-side component to encrypt the upload parameters.
Look into Zapier integration with S3. The idea is that you setup a queue collection in firebase where you would create a new instance with the binary of the file data. Then zapier listens to for child_added on this queue collection and does it's magic (that you don't have to worry about) to upload your file to S3 bucket. After everything is finished, the instance in the queue is deleted... No server side needed with that, except there might be some fees...
Here is the link https://zapier.com/zapbook/amazon-s3/
I am developing a mobile web app using Kendo UI Mobile. Whenever we make any AJAX calls, or our DataSources make them we call app.startLoading() to show the loading icon to the user. This works very well.
However, depending on the context in which the call is made we would like to change the text that is displayed along with the loading icon. I know you can define this when I create the kendo.mobile.Application instance. How can I change it afterwards?
The documentation does not suggest a way to do this, and a browse of the source code did not help me either. Is this really not possible?
EDIT: This is using Kendo UI Mobile v.2012.3.1114
I usually make a "utility" function to do this:
var _kendoApp = new kendo.mobile.Application(document.body, {});
var showLoading = function (message) {
_kendoApp.loading = "<h1>" + (message ? message : "Loading...") + "</h1>";
_kendoApp.showLoading();
};
I am also setting a default message of "Loading..." if one isn't passed in.
Edit:
I could have sworn that worked for me in a past app I did, but judging by thr source, I think you are right, my answer above shouldn't work. My best suggestion is to add a class to the message element so you can target it, and use jQuery to change the text.
var _kendoApp;
var showLoading = function (message) {
$(".loading-message").text(message ? message : "Loading...");
_kendoApp.showLoading();
};
_kendoApp = new kendo.mobile.Application(document.body, {
loading: '<h1 class="loading-message">Loading...</h1>'
});
I have a problem loading images
var bgReady = false;
var bgImage = new Image();
bgImage.onload = function () {
alert('it loaded');
bgReady = true;
};
bgImage.src = "images/background.png";
the alert does not appear when the websocket server is running.
The alert will appear if I remove the socket code and turn the server off.
I have already placed alerts throughout the code to see how far it will run without breaking.
Nothing seems to be breaking except the image does not seem to want to load.
any suggestions will be helpful.
I was accessing files from a different port so thats why they were not loading