I am developing a routine app to store the data of Routine posted on a notice board based on a keyword entered. For example, if you are from group A (should be certain unique keyword), Just enter the Keyword and Scan the piece of Paper and it will store the data from it to your phone.So that's the Concept.I have gotten to the point where my phone can detect text.But i am stuck on storing the data.Can any one help?
PS: I am new to android development..So please Elaborate it a bit..
first things first, this question is very broad and asks for a final solution, not really about a problem. You should learn more about Android development with tutorials and classes you can find free online.
Now, to answer some part of it, here follows a class on GitHub that accesses the database and persists some things:
https://github.com/ravi8x/AndroidSQLite/blob/master/app/src/main/java/info/androidhive/sqlite/database/DatabaseHelper.java
You have to pay attention to the code in GitHub, since it uses additional classes you can browse. I hope this is enough to help you a bit.
Related
I want to develop an app which I stream basic text information about sports. First of all I believe I need a server which my users connect to see my stream as soon as something new is published. But I don't have an idea about how to build something like that. I did some search on web to find lessons or answers but I wasn't able to find anything useful. If it's true that I need a server, is Java language good to code server's program? Because I only know a little bit of Java.
And I want my app to have a monthly fee. I'm completely new to programming but I guess I need a database to keep track of my user information. Do I have to build my own user membership system - which people register with their e-mails etc- for all this? Is it hard to do that? And again I don't have any source of information about this one too.
I'm lost at this point. I don't know what to search to get some answers. So I'm asking you guys. What do I need to build an app with monthly fee that streams live information? I'm not expecting a full answer here but at least I believe you guys can tell me where to look for answers. Thanks.
While I agree the question is very vague and open (we could write a thesis on the topic in question and everyone will have their own way to complete) my suggestion would be to research the following:
Java - read as much as you can about the language and ensure that you are happy with (or know where you can get access to good helpers) the syntax (you mention that you know a little about Java so that is a good start).
Android programming in general. Look up the Activity lifecycle (The Android documentation is good, read as much as you can, follow the examples and try out the tutorials! https://developer.android.com/training/basics/activity-lifecycle/index.html)
Read up on Firebase; this should make the server side a little simpler (although I have only a parsing knowledge (i.e., none) of Firebase, it looks like it will be a good start). Again walk through the examples / tutorials; do the Hello World and then pull it apart to see if you can figure out how it is holding together.
Then when you have questions (which you will, we all do!) come back and I know that you will get some great help!
Once you have a few applications under your belt (personal 'play' apps) then and only then would I consider looking at the Google Play API (https://developers.google.com/android-publisher/).
Hope this gets you on the starting grid at least! Good luck!
Gav
I'm fairly new to the world of Computer Science, and I have questions that I am not sure where/how to look for an answer for them, otherwise I would have just googled.
So, I made an app in android, and it has a SQLite database. Right now, I am the only one who uses this app, it's not even published...the app is like any other social network website where you post something, and others comment on it. So right now, I'm the only one who posts and comments, and the results are all saved in SQLite database in my phone.
How can I "publish" my database to the world? So other people could access the database too? add comments to it etc. when they have the app installed on their device.
What topics of computer science I need to learn to go with this?
I'm sure there's a simple answer to this, but I don't know where/what to look for.
If there are any links to websites, or similar questions on here that could help please post it here.
You have developed an app with db that is in client side
In order to be accessed from everywhere ... you have to use centralized Data base server like sql-server,oracle or my sql...
you have to link you local db to server db for that you need a API(Application programming interface) it can be developed using various languages such as php,c#,java etc..
I hope this would be helpful enough for you.
So wasn't sure how to title this one but I'm hoping someone with Android experience can answer this for me.
I'm trying to turn Android code into App Inventor 2 code. I need to start a new activity and have the relevant Action, ActivityPackage, ActivityClass, DataType, ExtraKey, ExtraValue (whether all of these are needed for this specific situation I'm not sure) to input into an ActivityStarter that views the locally stored phone contacts.
I am sure there is a way, there is in just Android app making with Java but I need help translating that code across. I'm pretty sure I want an android.intent.action.VIEW and contactsContract.CommonDataKindsPhone I'm just not sure in which parts in should go and what else I need to than be able to add that information to a list.
This is what I have so far:
I'm sure others would appreciate this information, as well as how to get other related data to contacts into App Inventor 2.
Also I know about ContactPicker.PhoneNumberList and PhoneNumberPicker.PhoneNumberList neither of which are able to find any contacts on my phone which is why I'm trying to work out a work-around.
Anyway any help is appreciated,
Thanks.
Unfortunately it's not possible to get a list of locally stored phone contacts with App Inventor. See also issue 734 in the Issues List. I suggest you to star this issue, so probably one day we get this feature into App Inventor.
The ContactPicker.PhoneNumberList or PhoneNumberPicker.PhoneNumberList only give you all phone numbers of a contact after picking a contact.
App Inventor has its limitations and unfortunately you can't do something like this as described in this Stackoverflow answer. The only thing you can do is to access the Google Contacts API with the web component to get a list of contacts, but precondition is, your contacts are synchronized with Google, but this is not what you want. An example to do that you can find here.
I am a CS major and I just recently decided to start putting some of my java knowledge to use by learning how to program with Android. I have just been doing tutorials and reading some books on how to get started, but I would like to write an app and eventually release it to the app store. I have most of the ins and outs of the app figured out, but I'm not sure how to approach data storage. Part of my app will track shipping numbers and info, however, each shipment will have a pretty long list of fields (Name, ID, Address, Weight, Girth, ect.). The list in full approaches 10 items, if you include optional fields. Thats a lot of information to have a user fill out, especially if they have to do it on their phone (app is designed for small businesses, so lots of shipping for tracking). I would prefer not to have to build a sister website to hold this info for the user, so I guess my question would be, is there a service for mobile apps to use to push and pull info that a user could access through their computer? Or would it be better to use a file uploader and just format the info? I'm still an android novice, so I figured I need a little advice from the pros. Any and all advice would be appreciated, and if you know a database type service that is safe and reliable, that would help very much. Thank you!
im working on a simple Android app, it is much like any other simple Database app. I have 4 EditText fields where the user inputs 4 different small pieces of text. I want this text to be inserted in to my Database table in the corrects rows for my columns. I am not really sure how to go about doing this. I know onClickListener needs to be used but not sure how to use it.
What you are looking for is the glue to make it work, as you have a storage ( your database ) and the user interface. But, as you pointed out just right, your onClick actions, or more widely spoken, your whole user-interaction needs to be filled with action.
I won't give you a specific advice here as I think you should read a bit about the Model-View-Controller Pattern here, as well as about how Android handles all that stuff. A good entrypoint for gaining knowledge is, as always, Wikipedia.
Don't get me wrong, I don't mean to offend you by not answering the specific question: I just think it's more valuable for you to first learn the basics required for building great apps instead of reading a step-by-step manual!
On my phone right now, but you are correct about setting up an onClick method for, let's just say, a Submit button.
I would look at the Developers Guide on the SQLiteDatabase on ways to insert values by executing a SQL statement or check into using ContentValues to insert values when the button's pressed, both could help you out.
Also, with a fair share of knowledge on databases the Developer Guide should be all you need, but if you need further help search for related questions.
NOTE
A good practice is getting used to debugging your code using LogCat. It helps when things go astray, especially when working with databases.
Tne Notepad Tutorial in the Android Developer Documentation takes you through creating an application which stores data from fields in an SQLite database.
You could work through this, or if you didn't want to do that it would be a good source of sample code.