Send 1 ETH from contract to specific address

Smart Contracts
1

My contract will be holding ETH because I'm selling NFT's, but how do I transfer a specific amount to a specific wallet address?

wallet address and amount if fixed

transfer.to(wallet, amount);

2

create an external method that is only callable by you, pass wallet and amount as parameters and call transfer

3

Only callable by me, will not work, this needs to be done automatically when a user mints a NFT

4

then call walletAddress.transfer(amount) in the mint function

5

Tried.....

address(0xdD870fA1b7C4700F2BD7f44238821C26f7392148).transfer(1000000000000000000);

This throws an error: TypeError: "send" and "transfer" are only available for objects of type "address payable", not "address".

6

replace "address" with "payable":

payable(0xdD870fA1b7C4700F2BD7f44238821C26f7392148).transfer(1000000000000000000);

payable() creates an object of type address payable. This is necessary since solidity 6.0.0 (source)

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