Metamask Question: Ethereum cannot be downloaded via Metamask React
When you work with Metamask in the React application, programmers often meet the download of Ethereum objects from the wallet. In this article, we deepen the problem and present the solution.
Problem: Downloading Ethereum Object Metamask React
The code provided by you is a common example of dealing with changes in space in Metamask. When you try to download the Ethereum object from the portfolio using `ethereum.request ({method: 'eh_accounts'}), you encounter the following error:
You can’t download the Ethereum object
`
why this error happens
There is an error because `Ethereum.request ('Eth_ccounts')' is not a correct method of loading Ethereum Metamask React objects. The correct method of applying for the Ethereum address from the wallet is "Ethereum. Etherumccounts ())orethereum.threumbalance (). However, these methods restore a number of Ethereum accounts that do not contain a specific object.
Solution: using ethereum.threumaccounts ()
To download a specific Ethereum account, you can use ethereum.threumaccounts ():
`TYPEDRIPT
Ethereum.request ({method: 'eh_accounts'})
. Hen (bills => {
Specific specific = bills [0];
// Use a specific account to get a private key or other relevant information
})
.Catch ((err: alny) => {
Console.error (ERR); // deals with all errors that may occur when downloading the Ethereum object
});
Increasing the Event listener of account change
To deal with changes on accounts, you can add an event to the “Ethereum” object:
`TYPEDRIPT
Ethereum.on ('Conccountchanged', (newaccounts) => {
Const specific cucount = newaccounts [0];
// Use a specific account to get a private key or other relevant information
});
A perfect example
Here is a great example that shows how the Ethereum object is charged from Metamas and deals with changes in accounts:
`TYPEDRIPT
Import * Metamaskreact "Metamas reaction";
User interface accounts {
[Key: String]: Whatever;
}
Const reccountchanged = async (newaccounts) => {
Const specific cucount = newaccounts [0];
// Use a specific account to get a private key or other relevant information
};
Ethereum.on ("account -oriented", protected account);
Ethereum.request ({method: 'eh_accounts'})
. Hen ((accounts) => {
Console.log (bills);
})
.Catch ((err: alny) => {
Console.error (ERR); // deals with all errors that may occur when downloading the Ethereum object
});
In this example, we define the account information interface and create a function to deal with the account changes. Then we attach this function to the event as a listener of the event to the “Ethereum” object using the method (“calculated”).
application
Understanding the problem and giving the solution, we have made it easier for programmers to download Ethereum elements from Metamask React and dealing with changes in accounts. Remember to replace your own implementation of the implementation and update `ethereum.on (‘Conccountchanged’ (Newaccounts) => {…}); `Line according to proper use.