I am developing an Android word game like Scrabble. I need to check if the word a user enters is correct (aka is a String entered by a user equal to an existing word).
All that Android seems to offer is a spell-checking api which provides you with some suggestions based on your input. This just seems silly to me because these suggestions are actual words and there seems to be nothing in the api that is able to check if a word exists in it's dictionary.
I understood that there are some other web based solutions for my problem but I can't assume these web-based solutions will work forever and that users have a stable network connection. Also, my game is time based so the only proper solution would be a local one.
So, (how) can I validate a word (String) locally on Android?
inb4 it can't be done properly and wordnik is the best solution for me
Load your dictionary into SQLite and use a query to determine if it's valid.
Related
I'm currently working on a native Android app for my company and ran into some problems with Salesforce lately.
I hope I can find some help here.
What I want to achieve:
The company has a lot of Accounts in Salesforce with 3 important fields for the app: Name, Business (Workshop or Parts Dealer) and location(latitude, longitude)
I would like to show those Accounts(Workshops/Parts Dealers) as markers on a google map in my Android app based on a radius around the user's current location. So it would be more than sufficient to get the data as JSON or XML(i read about sObjects, which would be nice too)
The app will be freely available on Google Play Store and every user should be able to see all the Workshops/Parts dealers around the world.
The problem I'm facing is that I can't find a way to fetch the data inside my app without authenticating every user with a Salesforce-Login.
Which API is the best to use in this case?
It would be so awesome if anybody could help me with this problem.
What I tried so far:
- SalesforceMobileSDK: If i extend SalesForceApplication() i always end up with the Salesforce-Login Screen.
It seems that every client has to be authenticated for API-calls to work. I tried using the method peekUnauthenticatedRestClient(), but this method only works on full path URL's(e.g. "https://api.spotify.com/v1/search?q=James%20Brown&type=artist"), which isn't really practical for my Use-case.
I feel like I read nearly all docs about salesforce API, but can't quite get my head around how to solve this problem, although it seems like to be a pretty common use-case.
would a salesforce-apex method which would select all records inside a set radius around the user's location to be accessible without authentication?
Thanks for your help in advance!
Roman
Try asking on salesforce.stackexchange.com. Your question is more about licensing model than a particular programming problem. It might even be the case that you don't really need Salesforce for your project, you'd be better off on Heroku (even free tier) if the login piece is an issue...
All Salesforce APIs require some form of authentication. If you're positive you don't want to hardcode "Integration user" credentials in the app and you don't want to pay for (self-)registered user licenses in your org...
Try to read about these:
Site - piece of Visualforce running under specific "guest user", letting you view & interact with SF data without having to log in. You expose SF data to the world but that means it's your job to handle security (if any) and craft the API. You want to really display the data to human? Or just return JSON content or what...
Sites are meant to be displayin some incentive to contact you. Your product catalog / basic order form. Some map of nearby locations. Maybe a "contact us" form. There's limit on the traffic so eventually they'll explode as your app gets popular:
Customer Community - typically you need named licenses (even if they're fairly cheap) to let your customers log in to your SF. You create a Contact, click magic button - boom, this Contact now has a real matching User record with its own license. Think of it as some kind of step up from Sites - it'll still have some limits but will offer more than just raw API access and you'll have better control on what's going on.
My application involves scanning through the phone camera and detecting text. The only words that my application is concerned with is valid english words.
I have a list of ~354,000 valid english words that i can compare my scanned word with.
Since my application continuously detects text, i need this functionality to be very very fast. I have applied Levenshtein Distance technique. For each word, I:
Store the contents of the text file into an Arraylist<String> using Scanner
Calculate Levenshtein Distance of the word with each of the 354k words
Return the word corresponding to the minimum distance value
The problem is that it is very very slow. Without applying this, my app manages to ocr more than 20 words in around 70 to 100 millisecond. When i include this fixing routine, my app takes more that 1 full minute (60000ms) for a single word.
I was wondering if this technique is even suitable, given my case. If not, what other tested way should i go with? Any help would be greatly appreciated. I know this is possible, looking at how android keyboards are able to instantly correct our incorrectly typed words.
Other Failed endeavors:
Jaro distance. (similar)
Android internal SpellCheckerSession service. (doesn't fit my case. Result receipt via a callback is the issue)
My Solution that works:
I created a MYSQL table and uploaded the list of valid english words in it. It solves all the problems addressed in the question.
Here is my Android Application for reference:
Optical Dictionary & Vocabulary Teacher
I'm developing a word-building game (similar to scrabble) that takes a user's input and checks whether it is a valid word or not. First, I thought of using an offline dictionary database with SQLite.
But later I realized that there's a built-in dictionary (that predicts the words that are being entered in the text fields).
Is there any way that I can use this built-in dictionary to validate words entered in my app?
Perhaps what you are searching Android Spelling Cheker, here is an example.
I'm trying to detect whether certain websites are "valid" websites. Some things that make a website invalid:
Gives back bad status codes
Page content is empty
Website is a squatter (for example, the url points to a GoDaddy page, or any page that says come register this domain!)
I'm trying to figure out how to detect whether a website is a squatter. I'm using Java if that matters. Any ideas?
Sound like a good task for Machine Learning in my opinion.
Collect a sample of websites, some of them are 'squatters' and some of them are not (this is called the train set).
Use the bag of words model, or the tf-idf model (or any other model) as your features-space, and train a classifier using some supervised learning algorithm (SVM, decision trees,...).
On run time, use your classifier to determine if a website is a squatter or not.
Weka is a java library that implements many Machine Learning algorithm, and might help you.
I was wondering if anyone had experience retrieving data with the 3270 protocol. My understanding so far is:
Connection
I need to connect to an SNA server using telnet, issue a command and then some data will be returned. I'm not sure how this connection is made since I've read that a standard telnet connection won't work. I've also read that IBM have a library to help but not got as far as finding out any more about it.
Parsing
I had assumed that the data being returned would be a string of 1920 characters since the 3278 screen was 80x24 chars. I would simply need to parse these chars into the appropriate fields. The more I read about the 3270 protcol the less this seems to be the case - I read in the documentation provided with a trial of the Jagacy 3270 Java library that attributes were marked in the protocol with the char 'A' before the attribute and my understanding is that there are more chars denoting other factors such as whether fields are editable.
I'm reasonably sure my thinking has been too simplistic. Take an example like a screen containing a list of items - pressing a special key on one of the 24 visible rows drills down into more detailed information regarding that row.
Also it's been suggested to me that print commands can be issued. This has some positive implications - if the format of the string returned is not 1920 since it contains these characters such as 'A' denoting how users interact with the terminal, printing would eradicate these. Also it would stop having to page through lots of data. The flip side is I wouldn't know how to retrieve the data from the print command back to Java.
So..
I currently don't have access to the SNA server but have some screen shots of what the terminal will look like once I get a connection and was therefore going to start work on parsing. With so many assumptions and not a lot of idea on what the data will look like I feel really stumped. Does anyone have any knowledge of these systems that might help me back on track?
You've picked a ripper of a problem there. 3270 is a very complex protocol indeed. I wouldn't bother about trying to implement it, it's a fool's errand, and I'm speaking from painful personal experience. Try to find a TN3270 (Telnet 3270) client API.
This might not specifically answer your question, but...
If you are using Rational Developer for z/OS, your java code should be able to use the integrated HATS product to deal with the 3270 stream. It might not fit your project, but I thought I would mention it if all you are trying to do is some simple screen scraping, it makes things very easy.