XDC3Java

Usage

JAR file

Add XDC3Java to your project:

To add module dependency in android application

To add module dependency in your project follow the steps below :

go to file menu — project structure — modules — click ‘+’ — select import gradle Project — select the sub-module folder (git repo which is created by us) — select “XDC3Java“ folder — finish

you can see the folder in your android project

Now we have to add Module Dependency in the application project builg.gradle file

put “implementation project(":XDC3Java")“ in dependencies

Now we can access the methods of XDC3Java library in Any

Accessing methods of XRC20 in our project

  XDC20Client.getInstance().getTokenoinfo(token_address, new TokenDetailCallback() {
                    @Override
                    public void success(TokenDetailsResponse tokenDetailsResponse)
                    {
                       // you can proceed as you like after getting succes response.
                    }

                    @Override
                    public void failure(Throwable t)
                    {
                        Toast.makeText(MainActivity.this,t.getMessage(),Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void failure(String message)
                    {
                        Toast.makeText(MainActivity.this,message,Toast.LENGTH_LONG).show();
                    }
                });

Now, we can interact with the XRC20 read methods.

name() → string Returns the name of the token.

tokenResponse.getName();

balanceOf(address token,address account) → uint256 Returns the amount of tokens owned by account.

 tokenResponse.getBalance();

For write methods, we need to create an instance of XDC20Client Client and we need token owner private key

Credentials creds = org.web3j.crypto.Credentials.create(PRIVATE_KEY);

transfer(address token, address recipient, uint256 amount) → Moves amount tokens from the caller’s account to recipient. It will return a transaction hash.

  String trasaction_hash = XDC20Client.getInstance().TransferXdc(private_key, sender_address, receiver_address, new BigInteger(String.valueOf(token_totransfer), Long.parseLong(gasprice), Long.parseLong(gaslimit;

approve(address token, address spender, uint256 amount) → Sets amount as the allowance of spender over the caller’s tokens. It will return a transaction hash.

approved_hash = XDC20Client.getInstance().approveXRC20Token(Spender_address, privatekey, allownce_spender, value_approve);                    

For increase Allowance and decrease Allowance we need an instance of XRC20 and private key of owner:

decreaseAllowance(String privatekey, address token, address owner, address spender, uint256 subtractedValue)Automatically decreases the allowance granted to spender by the caller.

This is an alternative to approve.

Emits an Approval event indicating the updated allowance.

 approved_hash = XDC20Client.getInstance().decreaseAllownce(decrease_owner, decrease_spender, privatekey, decrease_allownce, Spender_address);                     

Accessing methods of XRC721 in our project

  XDC721Client.getInstance().getTokenoinfo(token_address, new TokenDetailCallback() {
                    @Override
                    public void success(Token721DetailCallback tokenDetailsResponse)
                    {
                       // you can proceed as you like after getting succes response.
                    }

                    @Override
                    public void failure(Throwable t)
                    {
                        Toast.makeText(MainActivity.this,t.getMessage(),Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void failure(String message)
                    {
                        Toast.makeText(MainActivity.this,message,Toast.LENGTH_LONG).show();
                    }
                });

Now, we can interact with the XRC721 read methods.

name() → string Returns the name of the token.

tokenResponse.getName();

symbol() → uint256 Returns the Symbol of token.

 tokenResponse.getSymbol();

For write methods, we need to create an instance of XDC721Client Client and we need token owner private key

Credentials creds = org.web3j.crypto.Credentials.create(PRIVATE_KEY);

transferfrom(address token, address recipient, uint256 amount) → Transfer ownership of an NFT. It will return a transaction hash.

  String trasaction_hash = XDC721Client.getInstance().transferfrom(tokenAddress, privatekey, tokenid, receiverAddress);

approve(address token, address spender, uint256 tokenid) → Change or reaffirm the approved address for an NFT. It will return a transaction hash.

approved_hash = XDC721Client.getInstance().approve(tokenAddress, privatekey, tokenid, receiverAddress);