TRON

This article describes the process of completing a Tron transaction through the SDK.

Support List

Support most TRX-series cryptocurrencies and their tokens.

• Tron

GsWalletTronSDK

The GsWalletTronSDK class mainly implements the following functions:

• Construct TRX transactions.
• Parse signature information.

class GsWalletTronSDK {
 
  static UR generateSignRequest({
    String? uuid,
    required String signData,
    required String path,
    int? fee,
    required String xfp,
    String? origin,
  })；

  static Map<String, dynamic> parseSignature(UR ur);
}

generateSignRequest

static UR generateSignRequest({
  String? uuid,
  required String signData,
  required String path,
  int? fee,
  required String xfp,
  String? origin,
})；

Input Parameters

• uuid: String optional Representing the unique ID of a transaction

• signData: String required Unsigned-transaction data, it's serialized hex for a TRX transaction

• path: String required BIP32 derivation path for from-address of the transaction

• xfp: String required MasterFingerprint, used as a unique wallet ID

• origin: String optional Notes for transaction, usually source of the request

• fee: int optional Transaction fee, minimum unit.

parseSignature

static Map<String, dynamic> parseSignature(UR ur);

Returns

• uuid: Uint8List transaction ID.

• signature: String signature of transaction.

• origin: String usually "GsWallet".

Example

Construct transaction

import 'package:gs_ur_dart/gs_ur_dart.dart';

UR ur = GsWalletTronSDK.generateSignRequest(
  uuid: "cf6645a0-8d24-11ef-90ac-6dae386eaee6",
  signData:
      "0a02c5fc2208a02f893e39e02b5840e8c38692ec315a68080112640a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412330a1541ac28610814b8b72e308dbb822c388400ad4aa2ef12154128ff40a1e26781937ba6f700a20daa74e6ef548e1880dac40970b5888392ec31",
  path: "m/44'/195'/0'/0/0",
  xfp: "27c3831f",
  origin: null,
  fee: 0);

final UREncoder urEncoder = UREncoder(ur);
String _currentQR = urEncoder.nextPart();
emit(_AnimatedQRDataState(_currentQR));
timer = Timer.periodic(const Duration(milliseconds: 250), (_) {
  _currentQR = urEncoder.nextPart();
  emit(_AnimatedQRDataState(_currentQR));
});

Parse signature

import 'package:gs_ur_dart/gs_ur_dart.dart';

typedef SuccessCallback = void Function(UR);
final SuccessCallback onSuccess;

final QRViewController controller；

controller.scannedDataStream.listen((event) {
  URDecoder urDecoder = URDecoder();
  urDecoder.receivePart(event.code);
  double progress = urDecoder.getProgress();
  if (urDecoder.isComplete()) {
    final UR result = urDecoder.resultUR();
    if (!succeed) {
      onSuccess(result);
      succeed = true;
    }
  }
});

onSuccess(UR ur){
  final tronSigned = GsWalletTronSDK.parseSignature(ur);
}

// tronSigned: {
//      "uuid": [207,102,69,160,141,36,17,239,144,172,109,174,56,110,174,230],
//      "signature":"e07b32499c85a312fd86a8c0f775a0bce723a14336f71e8f6596a28a15bbf79801338e57f3fb18ca75db58977682062c29853b390966baf9303680edf548e01f01",
//      "origin":"GSWALLET",
//    };