I am trying to execute some functions of my deployed contract in Android Studio through a Java file. I have generated Java Wrapper files. However, when I run Android Studio, there is no data added to the smart contract. Is there anything wrong with my codes? Any help will be appreciated.
Here is my Java Code :
package smth.ui.home;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import org.web3j.crypto.Credentials;
import org.web3j.protocol.Web3j;
import org.web3j.protocol.core.methods.response.TransactionReceipt;
import org.web3j.protocol.http.HttpService;
import org.web3j.tx.ManagedTransaction;
import smth.R;
import smth.pojo.UserAccountFactory;
public class HomeFragment extends Fragment {
private HomeViewModel homeViewModel;
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
homeViewModel =
new ViewModelProvider(this).get(HomeViewModel.class);
View root = inflater.inflate(R.layout.fragment_home, container, false);
final TextView textView = root.findViewById(R.id.text_home);
homeViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
@Override
public void onChanged(@Nullable String s) {
textView.setText(s);
}
});
Web3j web3 = Web3j.build(new HttpService("https://ropsten.etherscan.io/tx/0x7b8418fc1d6d82e221a3ec4519c2a1c0de04a4a5a4c421e2e45ec63c3109737e"));
Credentials credentials1 = Credentials.create("privateKey");
try {
UserAccountFactory contract = UserAccountFactory.load("0x1db931d46dc846bd2e7ff0f33d9eb43fc62e6981", web3, credentials1, ManagedTransaction.GAS_PRICE, UserAccountFactory.GAS_LIMIT);
TransactionReceipt transactionReceipt = contract.registerNewUser("[email protected]", "Hi1231","Customer").sendAsync().get();
} catch (Exception e) {
e.printStackTrace();
}
web3.shutdown();
return root;
}
}
And here is my JavaWrapper code :
package smth.pojo;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.Callable;
import org.web3j.abi.TypeReference;
import org.web3j.abi.datatypes.Function;
import org.web3j.abi.datatypes.Type;
import org.web3j.abi.datatypes.Utf8String;
import org.web3j.abi.datatypes.generated.Bytes32;
import org.web3j.abi.datatypes.generated.Uint256;
import org.web3j.crypto.Credentials;
import org.web3j.protocol.Web3j;
import org.web3j.protocol.core.RemoteCall;
import org.web3j.protocol.core.methods.response.TransactionReceipt;
import org.web3j.tuples.generated.Tuple4;
import org.web3j.tx.Contract;
import org.web3j.tx.TransactionManager;
/**
* <p>Auto generated code.
* <p><strong>Do not modify!</strong>
* <p>Please use the <a href="https://docs.web3j.io/command_line.html">web3j command line tools</a>,
* or the org.web3j.codegen.SolidityFunctionWrapperGenerator in the
* <a href="https://github.com/web3j/web3j/tree/master/codegen">codegen module</a> to update.
*
* <p>Generated with web3j version 3.3.1.
*/
public class UserAccountFactory extends Contract {
private static final String BINARY = null;
protected static final HashMap<String, String> _addresses;
static {
_addresses = new HashMap<>();
}
protected UserAccountFactory(String contractAddress, Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
super(BINARY, contractAddress, web3j, credentials, gasPrice, gasLimit);
}
protected UserAccountFactory(String contractAddress, Web3j web3j, TransactionManager transactionManager, BigInteger gasPrice, BigInteger gasLimit) {
super(BINARY, contractAddress, web3j, transactionManager, gasPrice, gasLimit);
}
public static RemoteCall<UserAccountFactory> deploy(Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
return deployRemoteCall(UserAccountFactory.class, web3j, credentials, gasPrice, gasLimit, BINARY, "");
}
public static RemoteCall<UserAccountFactory> deploy(Web3j web3j, TransactionManager transactionManager, BigInteger gasPrice, BigInteger gasLimit) {
return deployRemoteCall(UserAccountFactory.class, web3j, transactionManager, gasPrice, gasLimit, BINARY, "");
}
public RemoteCall<TransactionReceipt> editUserDetails(BigInteger _userNo, String _oldPassword, String _newPassword) {
final Function function = new Function(
"editUserDetails",
Arrays.<Type>asList(new org.web3j.abi.datatypes.generated.Uint256(_userNo),
new org.web3j.abi.datatypes.Utf8String(_oldPassword),
new org.web3j.abi.datatypes.Utf8String(_newPassword)),
Collections.<TypeReference<?>>emptyList());
return executeRemoteCallTransaction(function);
}
public RemoteCall<TransactionReceipt> loginUser(BigInteger _userNo, String _password) {
final Function function = new Function(
"loginUser",
Arrays.<Type>asList(new org.web3j.abi.datatypes.generated.Uint256(_userNo),
new org.web3j.abi.datatypes.Utf8String(_password)),
Collections.<TypeReference<?>>emptyList());
return executeRemoteCallTransaction(function);
}
public RemoteCall<TransactionReceipt> registerNewUser(String _email, String _password, String _accountType) {
final Function function = new Function(
"registerNewUser",
Arrays.<Type>asList(new org.web3j.abi.datatypes.Utf8String(_email),
new org.web3j.abi.datatypes.Utf8String(_password),
new org.web3j.abi.datatypes.Utf8String(_accountType)),
Collections.<TypeReference<?>>emptyList());
return executeRemoteCallTransaction(function);
}
public RemoteCall<BigInteger> userCount() {
final Function function = new Function("userCount",
Arrays.<Type>asList(),
Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
return executeRemoteCallSingleValueReturn(function, BigInteger.class);
}
public RemoteCall<Tuple4<BigInteger, String, byte[], String>> userList(BigInteger param0) {
final Function function = new Function("userList",
Arrays.<Type>asList(new org.web3j.abi.datatypes.generated.Uint256(param0)),
Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}, new TypeReference<Utf8String>() {}, new TypeReference<Bytes32>() {}, new TypeReference<Utf8String>() {}));
return new RemoteCall<Tuple4<BigInteger, String, byte[], String>>(
new Callable<Tuple4<BigInteger, String, byte[], String>>() {
@Override
public Tuple4<BigInteger, String, byte[], String> call() throws Exception {
List<Type> results = executeCallMultipleValueReturn(function);
return new Tuple4<BigInteger, String, byte[], String>(
(BigInteger) results.get(0).getValue(),
(String) results.get(1).getValue(),
(byte[]) results.get(2).getValue(),
(String) results.get(3).getValue());
}
});
}
public static UserAccountFactory load(String contractAddress, Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
return new UserAccountFactory(contractAddress, web3j, credentials, gasPrice, gasLimit);
}
public static UserAccountFactory load(String contractAddress, Web3j web3j, TransactionManager transactionManager, BigInteger gasPrice, BigInteger gasLimit) {
return new UserAccountFactory(contractAddress, web3j, transactionManager, gasPrice, gasLimit);
}
protected String getStaticDeployedAddress(String networkId) {
return _addresses.get(networkId);
}
public static String getPreviouslyDeployedAddress(String networkId) {
return _addresses.get(networkId);
}
}
