public static Transaction createSignedTransaction(TradeSession ts, MbwManager mbwManager) {
Preconditions.checkNotNull(ts.buyerAddress);
// Create default wallet
Wallet wallet = mbwManager.getRecordManager().getWallet(mbwManager.getWalletMode());
// Get spendable outputs
SpendableOutputs spendable =
wallet.getLocalSpendableOutputs(mbwManager.getBlockChainAddressTracker());
// Extract private key ring
PrivateKeyRing keyRing = wallet.getPrivateKeyRing();
// Create unsigned transaction
UnsignedTransaction unsigned =
createUnsignedTransaction(
ts.satoshisFromSeller,
ts.satoshisForBuyer,
ts.buyerAddress,
ts.feeAddress,
mbwManager,
spendable,
keyRing,
mbwManager.getNetwork());
if (unsigned == null) {
return null;
}
// Make signatures
List<byte[]> signatures =
StandardTransactionBuilder.generateSignatures(
unsigned.getSignatureInfo(), keyRing, mbwManager.getRecordManager().getRandomSource());
// Sign transaction
Transaction tx = StandardTransactionBuilder.finalizeTransaction(unsigned, signatures);
return tx;
}
public static boolean canAffordTrade(TradeSession ts, MbwManager mbwManager) {
// Create default wallet
Wallet wallet = mbwManager.getRecordManager().getWallet(mbwManager.getWalletMode());
// Get spendable outputs
SpendableOutputs spendable =
wallet.getLocalSpendableOutputs(mbwManager.getBlockChainAddressTracker());
// Extract private key ring
PrivateKeyRing keyRing = wallet.getPrivateKeyRing();
Address nullAddress = Address.getNullAddress(mbwManager.getNetwork());
return createUnsignedTransaction(
ts.satoshisFromSeller,
ts.satoshisForBuyer,
nullAddress,
nullAddress,
mbwManager,
spendable,
keyRing,
mbwManager.getNetwork())
!= null;
}
@SuppressLint("ShowToast")
@Override
public void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.get_sending_amount_activity);
_toast = Toast.makeText(this, "", Toast.LENGTH_SHORT);
_mbwManager = MbwManager.getInstance(getApplication());
// Get intent parameters
_wallet = Preconditions.checkNotNull((Wallet) getIntent().getSerializableExtra("wallet"));
_spendable =
Preconditions.checkNotNull(
(SpendableOutputs) getIntent().getSerializableExtra("spendable"));
// May be null
_oneBtcInFiat = (Double) getIntent().getSerializableExtra("oneBtcInFiat");
Long amount = (Long) getIntent().getSerializableExtra("amountToSend");
// Load saved state
if (savedInstanceState != null) {
amount = (Long) savedInstanceState.getSerializable("amountToSend");
}
// Construct list of outputs
_outputs = new LinkedList<UnspentTransactionOutput>();
_outputs.addAll(_spendable.unspent);
_outputs.addAll(_spendable.change);
// Construct private key ring
_privateKeyRing = _wallet.getPrivateKeyRing();
// Determine and set balance
_balance = 0;
for (UnspentTransactionOutput out : _outputs) {
_balance += out.value;
}
((TextView) findViewById(R.id.tvMaxAmount)).setText(getBalanceString(_balance));
// Calculate the maximum amount we can send
_maxSendable = getMaxAmount();
// Set amount
String amountString;
if (amount != null) {
amountString = CoinUtil.valueString(amount, _mbwManager.getBitcoinDenomination(), false);
} else {
amountString = "";
}
TextView tvAmount = (TextView) findViewById(R.id.tvAmount);
tvAmount.setText(amountString);
_numberEntry =
new NumberEntry(
_mbwManager.getBitcoinDenomination().getDecimalPlaces(), this, this, amountString);
checkTransaction();
// Make both currency button and invisible right button at top a listener
// switch currency
Button btCurrency = (Button) findViewById(R.id.btCurrency);
btCurrency.setText(_mbwManager.getBitcoinDenomination().getUnicodeName());
btCurrency.setEnabled(_oneBtcInFiat != null);
btCurrency.setOnClickListener(switchCurrencyListener);
findViewById(R.id.btRight).setOnClickListener(switchCurrencyListener);
// Make both paste button and invisible left button at top a listener to
// paste from clipboard
Button btPaste = (Button) findViewById(R.id.btPaste);
btPaste.setOnClickListener(pasteListener);
findViewById(R.id.btLeft).setOnClickListener(pasteListener);
// Next Button
findViewById(R.id.btOk).setOnClickListener(okClickListener);
// Max Button
findViewById(R.id.btMax).setOnClickListener(maxClickListener);
}