MetaMask Integration: ERC-1155 Interface for Mobile App
As a developer of an ERC-1155-compliant contract that issues a single NFT per use, you have probably implemented the token part using OpenZeppelin’s ERC-1155 standard. Now it’s essential to provide seamless integration with the MetaMask mobile wallet, allowing users to manage their digital assets and access your contract.
Getting Started
To add an ERC-1155 interface to MetaMask mobile, follow these steps:
- Install the MetaMask Wallet App
: First, you need to download and install the official MetaMask Wallet app for Android or iOS. This will allow users to interact with your contract on their mobile devices.
- Create a New Contract: Create a new contract that uses the ERC-1155 standard. You can do this by importing the OpenZeppelin ERC-1155 library into your Solidity code and defining the interface using the “IERC1155” framework.
- Configuring MetaMask Integration: When creating your contract, you need to add a “MetaMask” interface. This interface will allow users to interact with your contract on MetaMask.
Example Code
Here is an example of how you can define a MetaMask interface in Solidity:
pragma solidity ^0.8.0;
import " ERC1155.sol";
contract My Contract {
Use ERC1155 for ERC1155;
struct MetaMaskInterface {
public address;
uint256 public number;
mapping(address => uint256) public values;
}
function addNFT(uint256 _id, address _owner) public ERC1155(MetaMaskInterface(_id), _owner) {
// Add the NFT to your contract storage
}
}
MetaMask interface added
When creating the contract, you need to add a `MetaMask'' interface. You can do this by importing the OpenZeppelin ERC-1155 library and defining theMetaMaskInterface’ structure using the example provided.
For example:
pragma solidity ^0.8.0;
import `` ERC1155.sol';
import "
contract My Contract {
using ERC1155 for ERC1155;
using AddressMapping for AddressMapping;
struct MetaMaskInterface {
public address;
uint256 public number;
mapping(address => uint256) public values;
}
function addNFT(uint256 _id, address _owner) public ERC1155(MetaMaskInterface(_id), _owner) {
// Add the NFT to your contract storage
}
}
Using MetaMask in your contract
Once you have added the “MetaMask” interface to your contract, users can interact with it on their mobile devices. They need to download and install the MetaMask wallet app, then link their account to your contract.
When a user adds an NFT to your contract, they can view its details, including the number of tokens stored in their MetaMask wallet. You can also use this interface to implement features such as:
- Token Burning: Allows users to burn existing NFTs by adding them to MetaMask and triggering a feature.
- NFT Exchange
: Allows users to exchange their NFTs for ETH or other fiat currencies using MetaMask.
Follow the steps below to integrate your ERC-1155 compatible contract with the MetaMask mobile wallet, allowing users to seamlessly manage their digital assets.
