问题
I am using the Android 2.2 API. I want to know how to connect to a PostgreSQL database server.
I am new to this and so have no ideas, so please help me with some sample code.
回答1:
You usually don't connect directly to a database. To achieve the results you want, you can do a RESTful request.
This means, send either a JSON string or xml file to a server(which you can program in php, ruby and what not)
I'm not going to give you sample code cause there are literally tons of code on a simple google search "android restful login" Example tutorial
The process is usually:
Enter login credentials on android device -> send post request to server -> validate credentials to the database(postgres in this case) -> send verification back -> android device act upon verification(usually by loading a new activity as a result if logged in successfully)
来源：https://stackoverflow.com/questions/10408784/how-to-check-username-and-password-in-a-postgresql-server-from-android