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Updated on 2026-08-14

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Tangem 2019-06-11 12:27:03 +03:00
parent ba0b69b263
commit 2d170ae61c
8 changed files with 39 additions and 79 deletions
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75
app/src/main/java/com/tangem/wallet/ltc/LtcEngine.java
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@ -395,18 +395,15 @@ public class LtcEngine extends BtcEngine {
@Override
public SignTask.TransactionToSign constructTransaction(Amount amountValue, Amount feeValue, boolean IncFee, String targetAddress) throws Exception {
final ArrayList<UnspentOutputInfo> unspentOutputs;
ArrayList<UnspentOutputInfo> unspentOutputs = new ArrayList<>();
checkBlockchainDataExists();
String myAddress = ctx.getCoinData().getWallet();
byte[] pbKey = ctx.getCard().getWalletPublicKey();
// Build script for our address
List<BtcData.UnspentTransaction> rawTxList = coinData.getUnspentTransactions();
byte[] outputScriptWeAreAbleToSpend = Transaction.Script.buildOutput(myAddress).bytes;
// Collect unspent
unspentOutputs = BTCUtils.getOutputs(rawTxList, outputScriptWeAreAbleToSpend);
for (BtcData.UnspentTransaction utxo : coinData.getUnspentTransactions()) {
unspentOutputs.add(new UnspentOutputInfo(BTCUtils.fromHex(utxo.txID), new Transaction.Script(BTCUtils.fromHex(utxo.Raw)), utxo.Amount, utxo.Height, -1, utxo.txID, null));
}
long fullAmount = 0;
for (int i = 0; i < unspentOutputs.size(); ++i) {
@ -495,66 +492,16 @@ public class LtcEngine extends BtcEngine {
};
}
private final static BigDecimal relayFee = new BigDecimal(0.00001);
private final static BigDecimal relayFee = new BigDecimal(0.00001).setScale(8, RoundingMode.DOWN);
@Override
public void requestFee(BlockchainRequestsCallbacks blockchainRequestsCallbacks, String targetAddress, Amount amount) throws Exception {
final int calcSize = calculateEstimatedTransactionSize(targetAddress, amount.toValueString());
Log.e(TAG, String.format("Estimated tx size %d", calcSize));
coinData.minFee=null;
coinData.maxFee=null;
coinData.normalFee=null;
coinData.minFee = coinData.normalFee = coinData.maxFee = new Amount(relayFee, "LTC");
blockchainRequestsCallbacks.onComplete(true);
}
final ServerApiElectrum serverApiElectrum = new ServerApiElectrum();
final ServerApiElectrum.ResponseListener electrumListener = new ServerApiElectrum.ResponseListener() {
@Override
public void onSuccess(ElectrumRequest electrumRequest) {
BigDecimal fee;
if (electrumRequest.isMethod(ElectrumRequest.METHOD_GetFee)) {
try {
fee = new BigDecimal(electrumRequest.getResultString()); //fee per KB
if (fee.equals(BigDecimal.ZERO)) {
serverApiElectrum.requestData(ctx, ElectrumRequest.getFee());
}
// if (calcSize != 0) {
fee = fee.multiply(new BigDecimal(calcSize)).divide(new BigDecimal(1024)); // (per KB -> per byte)*size
// } else {
// serverApiElectrum.requestData(ctx, ElectrumRequest.getFee());
// }
//compare fee to usual relay fee
if (fee.compareTo(relayFee) < 0) {
fee = relayFee;
}
fee = fee.setScale(8, RoundingMode.DOWN);
CoinEngine.Amount feeAmount = new CoinEngine.Amount(fee, ctx.getBlockchain().getCurrency());
coinData.minFee = feeAmount;
coinData.normalFee = feeAmount;
coinData.maxFee = feeAmount;
// if (coinData.minFee != null && coinData.normalFee != null && coinData.maxFee != null) {
blockchainRequestsCallbacks.onComplete(true);
// } else {
// blockchainRequestsCallbacks.onProgress();
// }
} catch (JSONException e) {
e.printStackTrace();
}
}
}
@Override
public void onFail(ElectrumRequest electrumRequest) {
ctx.setError(electrumRequest.getError());
blockchainRequestsCallbacks.onComplete(false);
}
};
serverApiElectrum.setResponseListener(electrumListener);
serverApiElectrum.requestData(ctx, ElectrumRequest.getFee());
@Override
public boolean allowSelectFeeLevel() {
return false;
}
}