Withdraw NFT from PDA/ TokenAccount Anchor-lang

Question

That is what am i doing, transferring my NFTs to TokenAccount with authority as stake_account which is a PDA. How can I tranfer NFTs back to a certian wallet in anchor-lang.

use anchor_spl::token::{ Token, TokenAccount, Transfer }

Token Account:

    #[account(
        init_if_needed,
        seeds = [mint.key().as_ref(), b"nfts_vault_seed", from.key().as_ref()],
        bump,
        //space = 82,
        payer = from, 
        token::mint = mint,
        token::authority = stake_account, //THIS authority is PDA  
    )]
    pub nfts_vault: Account<'info, TokenAccount>,

Transfer NFT to TokenAccount:

token::transfer(
       CpiContext::new(
          ctx.accounts.token_program.to_account_info(),
          token::Transfer {
            from: ctx.accounts.from.to_account_info(),
            to: ctx.accounts.nfts_vault.to_account_info(),
            authority: ctx.accounts.from.to_account_info(),
          }
       ), 1
)?;

Answer 1

Here's a code snippet to transfer tokens from a token account with PDA authority:

let config_bump = ctx.accounts.config.bump;
let config_seeds = &[
    "config".as_bytes().as_ref(),
     ctx.accounts.config.admin.as_ref(),
     &[config_bump]
];
let signer = &[&config_seeds[..]];
        
anchor_spl::token::transfer(
    CpiContext::new(
        ctx.accounts.token_program.to_account_info(),
        Transfer {
            from: ctx.accounts.staking_pool.to_account_info(),
            to: ctx.accounts.staker_token_account.to_account_info(),
            authority: ctx.accounts.config.to_account_info(),
         }
    ).with_signer(signer),
    1
)?;

Here a transfer is being made from staking_pool account to staker_token_account. Since staking_pool is owned by a PDA(config) which can't sign client-side, we add .with_signer() to our CpiContext.

Our signer is derived from the seeds and bump of the config account.