I’d like to help you with your problem with your problem. Here is an article with step -by -step instructions on how to get Bony API signature for Ethereum transactions using Flutter:
Get Binance API Signature: Step by Step Instructions
Binance-Api offers a way to access different data flows and APIs, including real-time market data, trade information and more. If you are working with Binance -Api in your fluttering application, you need to get an API key and create an API signature that verifies your identity. In this article, we will pass through Ethereum through the Ethereum -Api signature using the Flutter_Binance package.
Requirements:
- You have a bony account with sufficient means.
- You have registered on your site Binance -Api.
3 .. You received the API key and the mystery of the API (customer -id and customer secret).
- You have set the « Flutter_Binance » package in your Flutter project.
Step 1: Get Query Parameters
If you submit a request for Binance API, you should include the query parameters with the API parameter. In this case, we will use the Ethereum -Api parameter to record transaction information.
`Dart
Strings queryams = 'timestamp =' + datateme.now (). Milisekundesceepoch.Tostring ();
This creates a query parameter with the temple of time in milliseconds.
Step 2: Create http customer
You need to set up a customer HTTP to investigate binance. For this, we will use the « http » package.
`Dart
Import 'Package: http/http.dart' as http;
Future
Final ApiPoint = '
Final Header = {
'X-API key': 'your_api_key' ,,,
'X-API-SEEPRET': 'Your_api_secret',
};
can answer = waiting http.get (
Uri.parsse (Topdpoint),
Header: header,
);
IF (Answer.Statuscode == 200) {
// Analyze the JSON answer
Finally JSondata = Jsordecode (Answer.Body);
// process data as needed
Print ('transaction information:');
Print (jsondata);
// Return the success message
The return frame of return (
AppBar: AppBar (
Title: Text ('Ethereum Transaction Information'),
)
Body: Center (
Child: Column (
MainCessalignment: Maincessalignment.Center,
Children: [
Text ('Successful Information on Deal!'),),
Size (height: 20),
Increased button (
Onpression: () {
Navigator.push (
Context,
Material Pager Route (Builder: (Context) => Customdialog ()),
);
},
Child: Text (“Open a custom dialogue for further processing”).
)
] ,,,
)
)
);
} Different {
// bypassing errors
The return frame of return (
AppBar: AppBar (
Title: Text ('Error Revised'),
)
Body: Center (
Child: Column (
MainCessalignment: Maincessalignment.Center,
Children: [
Text (“Error by creating a request. Please check your API key and mystery”).
Size (height: 20),
Increased button (
Onpression: () {
Navigator.pop (context);
},
Child: Text (“Back to Previous Screen”),
)
] ,,,
)
)
);
}
}
Step 3: Sign request
To check your identity and get an API signature, you need to sign a request with a private key.
- Create a new file
Private_Key.pemin the regular directory of your project.
- Generate a private key with the « dart: convert » library or a tool like Openssl.
`Bash
Opensssl Genrsa -OUT Private_Key.pem 2048
3.
