Balance of erc20 token on polygon

[timfong888]

Hi, I am reading the docs to see if we can generate on mobile flutter app a public address.

That public address would receive an airdrop erc20 polygon token.

The mobile app displays the erc20 balance.

But it's polygon. It seems that as long as we add the correct RPC we can do this but wanted to confirm because wasn't fully clear when reading docs.

Thanks.

[MuTe33]

You should be able to interact with the polygon chain by changing the RPC address

[timfong888]

Thanks. So the api url can be the RPC url? But I also need to add a chain ID and I don't see a method or function for this. How do I add this?

[MuTe33]

within the RPC url you already define whether it is mainnet or any other testnet. The chain ID specificaly you set on the transaction call if I rememeber correctly