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i have just started making android app but i don't know how to use a already made database on SQLiteDatabase to display its content in my android app.
I have made data base helper class.
I want to acess the database information to b displayed in my app like name city etc.
So i want to know how i should write query so that i can access the data and display it in my app.
I am not asking how to make data base helper clas i m asking how to write query in my main.java so that database is displayed in my app
I have used this Library to load an existing .db sqlite-file into my Android-App Database from the assets folder. It worked very well and I recommand you to read the how--to on the main page of the project.
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Can we Use phpmyadmin and Firestore in a same Android App ?? Assuming if one part of the App contain a realtime feature (Chatting App),for which Database is Firestore And other part contain simple user features like viewing the stored data in Database(eg. Wikipedia),lets say it's DB is PhpMyadmin. will it be posssible ?
Yes you can. I did that recently in a project. Firebase is very easy just check the documentation.
You can actually use Firebase for everything. including storing and retrieving data. but, if you want to use another online DB, Web server or API that's totally doable.
I would recommend that you do a separate demo project using firebase and another Retrofit for example.
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Hey guys I'm working on an Android App with Android Studio and I need a database like mlab(mongoDB). But Android doesn't support mlab. I can't just use SQLite because my data has to be saved also when my application is not running.
For example if my user signs in, their profile photo and other information should be saved in the database and I also want to code something like a friend request which also should be saved in the database.
I googled so much but I didn't find a good solution.
I hope someone can help me.
You asking about two separate things. mLab is a Database as a Service which uses MongoDB, while SqLite is just a database.
You can save data while your application is not being used with either option, simply look into background Services and other parts of the Android API that allow background tasks.
If you want to save data to a database that is not on the device, you'll need to look into the documentation of the service to determine the best way to interact with your database. In the case of mLab, they allow both custom drivers and a REST API for interacting with your database.
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I want to know the concept of database in Android. As I understand that using SQLite database we can make , update database but I am unable to understand that how the sign-in option will be added to Android app. Will it be an app that will be work as a server? And the data of login user will come from server?
Depends on the way you design your app. Usually, the sign-in feature is done by providing an option to enter the sign-in credentials in your app, and the server verifies the data that is entered in your app. You don't want to store the entire database on your app, as it is safer within your server. Again, depends on how you design the app.
SQLite is embedded into every Android device. Using an SQLite database in Android does not require a setup procedure or administration of the database
onCreate() - is called by the framework if the database is accessed but not yet created.
onUpgrade() - called if the database version is increased in your application code. This method allows you to update an existing database schema or to drop the existing database and recreate it via the onCreate() method.
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I am working on an android application for my institute. I have to connect my app to the existing database of the college, although there is no API written. When I contacted the administration for help then they only handed me a SQL connection string and told me to write the API myself. I want to focus on the application only. Is there any way I can skip the API writing and still connect to the database easily and quickly??
As per my knowledge you cannot access database without using API. You can create your own database in SQLite but it will be local (offline) database.
One more thing, you can migrate database from one platform to another, but you will need an API to access data.
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I need to move data from one database to another , both databases are of same schema, only thing one database is will be in server and one will be in application (local sqlite database)
There are heaps of good tutorials for achieving the syncing and communication between an Android App and a server (via web service) around:
first
second
third
Just search for "android php (my)sql" or maybe "android jsp (my)sql" if you go tomcat or some other java server.
One of the most promising way is to create an app to sync database over server to local database. It'll take more time but would be working. For this you need to create a web service.