If i have an idea to build an android application , where do i find my team? are there any sites or application that can help?

Firebase can be use. It is from google.

Appy Pie's free Android App Maker helps you build amazing Android apps without any coding.

Flutter also a good site to use

The answer to this question is given below in the explanation section.

Explanation:

If you have an idea to build an android application, then first you need to know that the application that you are going to build is viable in a programming context. I mean the application you want to can be built easily in the android language.

To find the team for developing your application, if you have your business office and have a capacity for three to four developers where they set and build your application, then you need to hire people through advertising on social media that is easy to hire people and cost-effective.

If you don't have office space, then you can hire developers that will work online for you. In this case, you can hire developers from freelancing websites, such as up-work, guru, freelancer etc. From these platforms, you can hire developers according to what you need and according to your budget. Because hiring developer from under developing countries is cheapest than hiring developers from developed countries.

If you have some programming knowledge, then you can learn yourself androind language on you tube and can develop the application. But in this case, you will find many errors in your application and your application may not look likes a professional application.

However, there are many online android application developing tools available if you have no coding knowledge such

bubble.io    

firsbase

appypie.com

andromo.com

appsgeyser.com

appyourself.net

etc

Using these tools, you can build an android application without coding, but it also require learning these tools and also time to learn and develop.

it is much more convenient for the consumer to order something online, rather than going to a store. it saves them time and money for them, especially if that item is not accessed easily.