I am currently making an expense tracker on Android Studio. it is my first time so I'm not too experienced and am not expecting a fully coded answer, but maybe some guidance as I have not been able to find any resources online for my particular question.
So I know how to get user input, which in my case would be something like Amount Spent: and Location... etc. The only thing I am not familiar with is how to add/append this data to a table in Android.
For example, the table would look like this:
The user input would then be added to the table depending on the header.
I hope it will be helpful for you although in your post there is a few lack of description
Adding Table rows Dynamically in Android
Related
I'm not sure on how to approach the following problem, and I'm looking for some guidance:
I have a File which contains an random Ad Title on each line. What I need to do is to classify each title in smartphone or not-smartphone, depending if the Ad is selling a mobile phone or not.
I'm sorry the file isn't in english, but here is a screenshot showing a little bit of it:
complete file here
Problems I've encountered:
Some Ad titles are related to smartphones, but they aren't actually selling phones, but something related to it (acessory). Example: an ad selling phone cases for Iphone X
Some ad titles doesn't even have the phone brand, but only the model. Example: "White Xiaomi Mi Mix 2s Global 64GB" or "J7 Pro 64gb 4g J730".
It would be perfect if there was a way to extract the exact phone model from the title, but since each ad title is formatted differently, I couldn't find a way to do this.
Usually brands produce a variety of products, and smartphones are just one type of product. So when I filter by the brand name, it often returns me ads which aren't related to smartphones at all (tablets, TVs, chargers, etc). More filtering would be needed
Even though I am allowed to use it, I couldn't find some DB with a list of all smartphone models, or I don't know how to retrieve information from them.
What I've thought so far:
if I had access to a DataBase with a big quantity of smartphone models, I could directly search the file for each model name (example; "Iphone 5s" or "Moto G6").
I tried using FonoAPI https://fonoapi.freshpixl.com (which is a smartphone database for consulting data about the phones using java,php, etc) to search for smartphone models from a specific brand, but the api will only return a max of 100 results per time. So in order to use it, I would need to extract the product model name from the title so I can check if it is listed in the FonoAPI DB
So since each ad title in the file is formatted differently, I'm looking for some ideas on how to do this, because I couldn't find a way to extract the product model from the title to compare with FonoAPI database, neither get access to some big DB containing a vast quantity of models to directly look for them in the file.
My answer is not very precise and more like ideas i wanted to propose (because i like this problem and would be happy to get the file, seems like it is impossible to get it from your link).
First, as all NLP problems you need to ensure all the text is formatted the same way.
To get a phone model database. I would try to get a database with phone brands. Then go on a selling website to do web scraping. This way you would get a lot of phone model.
I would try to use some NLP model like LDA, but with another formatted way (like getting away the words beyond a limit after gb and the phone brands. We can hope all the phone are close to those words).
This can be stupid ideas, but i wanted to share (and i can not comment :D).
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.
I'm not asking for anyone to build me an app.
I just need some tips on getting started.
So what I wanted to do:
be able to map some routes/directions, similar to what Google Maps already has regarding the local transit in a city.
Why? Because Google's database is a bit outdated, first. Second, because I want to create a local database with the routes and with the stations. Unfortunately, I can't really do that using Google Maps and I think Leaflet could help me with this much better. This would've been a web app, where someone with an account could add/edit/delete the routes.
create an Android app that :
a) sees the routes, allows an user to find the closest path to get from point A to B using only the routes I have in my database, sort by tram/bus etc
b) allows the user to mark a location and say something like "bus no 37 was here at hour:minute:second" - this would appear for anyone else that is using the app, similar to what another app lets you do this for police cars and traffic jams
c) extra: allow users to input some data so that my app could also give predictions; for example, someone inputs it took 10m50s to get from point X to point Y on route Z. That remains in a database and then someone else inputs some data for the same path...i would create some algorithm that could get predictions on where would a bus be now if someone marked it at Station 'bla' 5 minutes ago. I know, I know, this might be pretty hard, and it would be pretty inaccurate, I should consider the time of day, but it would just be something small, as an extra. Also, would be cool if this stuff could be added automatically: like the user sets the route he's on, starts "recording", then stops it when he gets off the vehicle and the time and locations are automatically taken into consideration.
Hope you understand what I have in my mind.
Thing is, what would you recommend?
I know Java, Spring MVC and a bit of Android. JavaScript, HTML and CSS won't be a problem. I need to combine these. If I will use Leaflet, as far as I can find, I won't really be able to use it in an Android APP, I would have to create a web app. At the same time, Google Maps doesn't really let me do what I want for my "personal" database. I can't even create decent custom routes by adding waypoints because parts of the Tramway Line aren't on streets with car access. ALso, would you think this is easier/better to do as an Android app or as a web app? I'm kinda new to Android.
I hope this isn't an unsuitable thing to ask on stackoverflow.
I'm open to any ideas.
allows an user to find the closest path to get from point A to B using only the routes I have in my database, sort by tram/bus etc
Routing is hard. Multi-modal routing (tram+bus+car+walking+cycle) even more so. See pgRouting and Valhalla. If you're going to do anything with public transport, then you'll have to deal with GTFS too.
Research into OpenTripPlanner also, as there are several actors developing some similar platforms.
I hope this isn't an unsuitable thing to ask on stackoverflow.
I'm afraid it kinda is - see https://stackoverflow.com/help/on-topic, point 4.
So I have a program that runs on multiple computers. The program connects to a server where it gets all of its data from. There's a JPanel which lists names from a table in my postgresql database. As of now, the only way to refresh the panel is with a button press. I want the panel to update on its own when there is a change in the database so if one user adds a name, the other users will be able to see the change right away. Is there a way to broadcast a message to all users that are connected to the server so that their panel can refresh?
As soon as you want to do something like this you enter the world of multiple threads and all kinds of havock. Your question does not really have anything to do with databases, you merely want to send a message to all others using the application to update a component when they need to, keep your concerns separate. Now then you need to ask some questions like are the users all on the same network? Then you can get away with a simple chat client for java, there are heaps of them out there. But think about it, do you really need this requirement? Can't you just update the table say every 10 seconds? Or every 5 seconds? The difference in the difficulty of the implementation is substantial but the result I would say would be very similiar, unnoticable to the user even. But maybe you just want to learn stuff, then maybe you think you should add another table in sql with one entry which records the time the user table was updated which you can check and will be more optimal than the other. But this is considered bad practice, do you care? Same with sql statements to check when a table was edited last from what I have seen on the net, but should we always apply best practices, the application will still get across the line.
Maybe your update button is not looking so bad after all.
But users complain about that sort of crap and you can't explain this stuff to every user. My suggestion would be to have a configurable update that runs every how ever many seconds you tell it to. You will have to look up stuff about multi-threading though but shouldn't be too horrible.
I have been working on an app that can save your passwords for you. I would like it to work similarly to a contacts application. For example, I want to have a screen that displays all the names of the passwords entered (like the names of your contacts), then when you click on the name, it takes you to a screen with all the information you previously entered on it (like the phone numbers/email addresses that would be in your contacts). I also would like a way to edit this information. I have been searching for almost 2 weeks now and have found nothing to help me. If someone could simply point me in the right direction, or tell me what this way of saving information would be called so I can research it, it would be GREATLY appreciated. If possible, could any answers be explained well enough that a fairly new developer could understand them.
I think you need a ListView and some Adapter to show the name of the password, and when you click one of them, you create an Intent which leads you to a new Activity which show the associated details. In the detail Activity you can do some editing job and save them to database or ContentProvider.
If I am right, I think you need to follow the tutorial of Android development to learn more about Android system.