When you create a GWT app you can run it as a web application and point your browser to the home page and it works. Now, in this case your browser is being served the Javascript from the server and thus all calls to the server from your Javascript work fine.
But, if you then take the generated Java script and rather than have it server from the server just have it saved locally how would you go about getting your server calls to work. Say your server is running on localhost how do you get this to work. What I am trying to do is take a working GWT app and extract the generated Java script and wrap this in a phoneGap enabled app but I can't get my server calls to work.
Instead of trying adhoc approach. You should be looking at options provided by MGWT and PhoneGap - Reference http://www.m-gwt.com/.
Related
I've been trying to create simple mobile app prototype (in Flutter) which would allow you to connect to a Wallet and obtains your address(es). I cannot get the connection working, all the clients I could find are written in JS so my initial approach was to get it working using webview. However none of the libraries worked for me:
WalletConnect - the generated wc: link is not recognized (universal links don't seem to work)
Metamask - doesn't inject the provider into the webview browser (I'm serving the scripts locally)
Web3Modal - requires secure server to run
I'm about to try to get local HTTPS server working in the app just to try the Web3Modal but I kind of have a feeling that I'm approaching this wrong.
Any suggestions appreciated.
There is now walletconnect_dart package which supports WC protocol for Flutter. I have created walletconnect_qrcode_modal_dart package which uses walletconnect_dart to emulate functionality of #walletconnect/qrcode-modal npm package.
I've seen in a lot of places that in order to use an External Mongodb in Meteor applications, you should use an Environment Variable MONGO_URL. However, I'm building my application to work both as web app and mobile app (by generating an apk).
The problem is that when I start meteor as MONGO_URL='mongodb://user:pwd#path.mlab.com:9999/db' meteor it works well in my computer. But, it's not possible (I haven't found any way of doing so yet) to do this in mobile.
So, anyone has any idea of how I could use an external mongodb in mobile applications?
Thanks!
It seems to me that you are confused about how Meteor works, and more generally the client-server architecture.
Only your server has access to your database (whether on the same machine or at a third party provider), so that you keep control of exactly what your Client has access to.
By "Client", we mean what your visitor uses to access your app, whether a web app through a browser, or a mobile app through a Cordova wrapper.
So your mobile app only needs to know the URL of the server it has to connect to. That is specified by the --server option when you do your meteor build.
Then your server needs to know how to access the external MongoDB. This is your MONGO_URL environment variable. In production, you would set this variable on your server host. Each provider offers a different method to configure those environment variables, most of the time there is a graphical administration panel.
Note that the way Meteor works, you can use the same server to support both your web app and mobile app at the same time.
Finally, you can also test on mobile using meteor run android instead of just meteor (or with ios instead of Android, but you need a Mac). Of course you can still specify your MONGO_URL variable in the CLI when testing, exactly like you have done when testing on browser.
For mobile (cordova) meteor applications think of the app as just a web view with the ability to access native device features (camera, bluetooth ...). Since the application is basically a web view, the underlying mongodb associated with it is the same. If you want mobile device specific storage take a look at GroundDB
For your situation, if sounds like your mobile app is having problems connecting to your server, ultimately not allowing it to pull data from the mongoDB. Make sure that when you build the mobile application you have server specifed '--mobile-server'. Also if you are running it locally, make sure your mobile device is on the same network as your computer and any firewalls that might not allow connections are disabled.
I am developing a chrome packaged app. There is already an VB application running with mysql. I want to access the same database but use chrome packaged app as client.
How to access local mysql server from chrome packages app using javascript ?
I am aware of IndexedDB.
You have two options:
Create a web service (e.g. some PHP pages) that talks to MySQL and allows your app to use it as a go-between
Write your own MySQL driver/communicator to communicate with it directly: http://developer.chrome.com/apps/socket.html
The first is the easiest and would take the form:
Your chrome app would use AJAX to communicate with the PHP pages (probably via "POST")
Your PHP pages would expect it to login, use SSL and then use a token to continue identification during a session
The PHP would have generic capabilities to do CRUD actions
The PHP would spit back JSON for the results
but the second option would make you a hero if you took the time to develop that and put it on sourceforge or github under a permissive open source license.
I'm building a web app with Backbone.js (I'm not tied to Backbone yet though). I need a back-end framework only for persistence to a database via a RESTful API. However, I also need to able to deploy it as a 'desktop' app for off-line use, i.e. running a local server and launching a browser window, but I don't want users to have to start a server from the command line to run the application.
I can use SQLite as a database since it's only a single user application, it's just the framework that I'm stuck on. I have looked at the following:
Rails and Django: Default web servers are too flimsy, requires Ruby/Python and runs from the command line. I'm aware of the Bitnami stacks but at 99mb it's too big of a dependency and not exactly hidden from the user.
Sproutcore: Run from command line, also too bulky.
Pyjamas Desktop - Depends on MSHTML which I suspect limits my ability to use HTML5 features.
I'm leaning towards creating a Java app that starts a Scala/Lift server instance and opens a web browser, then sits in the system tray (kind of like WAMP). Is anyone familiar with a tool or framework built for user-friendly deployment as a standalone desktop app?
I do not know if PHP is an option for you? Then I would recommend phpdock.
web2py has a standalone deploy-to-desktop feature with no dependency on Python: http://web2py.com/books/default/chapter/29/14#How-to-distribute-your-applications-as-binaries
As Eydun said, phpdock is an option but it's commercially licensed .
I settled on using Java/Spring/H2/Hibernate/Jetty. I find that Jetty serves requests VERY quickly so the application looks real-time when launched in a browser. There is a tutorial on embedding the Jetty server here. I imagine it's quite trivial to build a GUI that launches the server and a browser.
Another Java option is to use the Play Framework, which may be more at home to those coming from a Django/Rails background. However, the documentation for "creating a standalone version of your application" for Play 2.0+ indicates that they have ditched using Java EE containers (Tomcat/Jetty) and WAR files in favor of running the JARs with the bundled copy of JBoss Netty, so it may take a bit of work to get it running the way you want it.
I would recommend the Play Framework approach if you're OK with using/learning Scala.
I was debugging my application in eclipse on tomcat server by using the URL sent from browser to server (from app logs). However after some change in application the URL formed is pretty large thus I am not able debug it anymore. (I am using GET method).
Is there any way I can make it work ?