allprojects {
repositories {
...
maven { url 'https://jitpack.io'}
}
}For “Maven” add this dependency to your module:
<dependency>
<groupId>com.github.centerprime</groupId>
<artifactId>Ethereum-Client-SDK</artifactId>
<version>1.2.0</version>
</dependency>For “Gradle” add this dependency to your module:
dependencies {
implementation 'com.github.centerprime:Ethereum-Client-SDK:1.2.0'
}Once you have the dependencies set up you can start using CenterPrime by creating a Ethereum Wallet:
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
import com.centerprime.ethereum_sdk.EthManager;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.schedulers.Schedulers;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
EthManager ethManager = EthManager.getInstance();
String password = "xxxx12345";
ethManager.createWallet(password, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(wallet -> {
String walletAddress = wallet.getAddress();
String keystore = wallet.getKeystore();
}, error -> {
});
}
}Congratulations! Now you are a CenterPrime user.
You can create Ethereum Wallet.
EthManager ethManager = EthManager.getInstance();
String password = "xxxx12345";
ethManager.createWallet(password, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(wallet -> {
String walletAddress = wallet.getAddress();
String keystore = wallet.getKeystore();
}, error -> {
});To import Ethereum wallet by keystore you can use a code written below.
EthManager ethManager = EthManager.getInstance();
String password = "xxxx12345";
String keystore = "JSON_FORMAT";
ethManager.importFromKeystore(keystore, password, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(walletAddress -> {
Toast.makeText(this, "Wallet Address : " + walletAddress, Toast.LENGTH_SHORT).show();
}, error -> {
});To import Ethereum wallet by private key you can use a code written below.
EthManager ethManager = EthManager.getInstance();
String privateKey = "PRIVATE_KEY";
ethManager.importFromPrivateKey(privateKey, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(walletAddress -> {
Toast.makeText(this, "Wallet Address : " + walletAddress, Toast.LENGTH_SHORT).show();
}, error -> {
});If you want to export wallet address’s keystore you can use a code written below.
EthManager ethManager = EthManager.getInstance();
String walletAddress = "WALLET_ADDRESS";
ethManager.getKeyStore(walletAddress, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(keystore -> {
Toast.makeText(this, "Keystore : " + keystore, Toast.LENGTH_SHORT).show();
}, error -> {
});If you want to export wallet address’s private key you can use a code written below.
EthManager ethManager = EthManager.getInstance();
String walletAddress = "WALLET_ADDRESS";
String password = "WALLET_PASSWORD";
ethManager.exportPrivateKey(walletAddress, password,this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(privatekey -> {
Toast.makeText(this, "Private Key : " + privatekey, Toast.LENGTH_SHORT).show();
}, error -> {
});To get balance of Ethereum wallet address you can use this code.
EthManager ethManager = EthManager.getInstance();
String walletAddress = "WALLET_ADDRESS";
ethManager.balanceInEth(walletAddress)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(balance -> {
Toast.makeText(this, "Eth Balance : " + balance, Toast.LENGTH_SHORT).show();
}, error -> {
});To get balance of ERC20 token you can use this code.
EthManager ethManager = EthManager.getInstance();
String walletAddress = "WALLET_ADDRESS";
String password = "WALLET_PASSWORD";
String erc20TokenContractAddress = "ERC_20_TOKEN_CONTRACT_ADDRESS";
ethManager.getTokenBalance(walletAddress, password, erc20TokenContractAddress, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(balance -> {
Toast.makeText(this, "Token Balance : " + balance, Toast.LENGTH_SHORT).show();
}, error -> {
});To send Ethereum to another wallet address you can use this code.
EthManager ethManager = EthManager.getInstance();
String walletAddress = "WALLET_ADDRESS";
String password = "WALLET_PASSWORD";
BigInteger gasPrice = new BigInteger("GAS_PRICE");
BigInteger gasLimit = new BigInteger("GAS_LIMIT");
BigDecimal etherAmount = new BigDecimal("ETHER_AMOUNT");
String receiverAddress = "RECEIVER_WALLET_ADDRESS";
ethManager.sendEther(walletAddress, password,gasPrice,gasLimit,etherAmount, receiverAddress, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(tx -> {
Toast.makeText(this, "TX : " + tx, Toast.LENGTH_SHORT).show();
}, error -> {
});To send ERC20 Token to another wallet address you can use this code.
EthManager ethManager = EthManager.getInstance();
String walletAddress = "WALLET_ADDRESS";
String password = "WALLET_PASSWORD";
BigInteger gasPrice = new BigInteger("GAS_PRICE");
BigInteger gasLimit = new BigInteger("GAS_LIMIT");
BigDecimal tokenAmount = new BigDecimal("TOKEN_AMOUNT");
String receiverAddress = "RECEIVER_WALLET_ADDRESS";
String erc20TokenContractAddress = "ERC20_TOKEN_CONTRACT_ADDRESS";
ethManager.sendToken(walletAddress, password, gasPrice, gasLimit, tokenAmount, receiverAddress, erc20TokenContractAddress, this)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(tx -> {
Toast.makeText(this, "TX : " + tx, Toast.LENGTH_SHORT).show();
}, error -> {
});