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105 changes: 105 additions & 0 deletions
105
wallet_app/android/app/src/main/java/com/example/walletapp/AccountBalanceActivity.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| package com.example.walletapp | ||
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| import android.os.Bundle | ||
| import androidx.activity.ComponentActivity | ||
| import androidx.activity.compose.setContent | ||
| import androidx.activity.enableEdgeToEdge | ||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.layout.Arrangement | ||
| import androidx.compose.foundation.layout.Column | ||
| import androidx.compose.foundation.layout.Spacer | ||
| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.foundation.layout.height | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.material.Surface | ||
| import androidx.compose.material.Text | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.text.font.Font | ||
| import androidx.compose.ui.text.font.FontFamily | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.compose.ui.unit.sp | ||
| import androidx.core.graphics.toColorInt | ||
| import androidx.core.view.WindowCompat | ||
| import org.web3j.protocol.Web3j | ||
| import org.web3j.protocol.http.HttpService | ||
| import org.web3j.utils.Convert | ||
| import java.math.BigDecimal | ||
| import com.example.walletapp.ui.theme.WalletappTheme | ||
|
|
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| class AccountBalanceActivity : ComponentActivity() { | ||
| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| enableEdgeToEdge() | ||
| WindowCompat.setDecorFitsSystemWindows(window, true) | ||
| setContent { | ||
| WalletappTheme { | ||
| Surface(modifier = Modifier.fillMaxSize()) { | ||
| AccountBalanceScreenView( | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Composable | ||
| fun AccountBalanceScreenView(){ | ||
|
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| val rpcUrl = "https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID" // Replace with your RPC URL | ||
| val accountAddress = "0xYourHardcodedAccountAddress" // account Address | ||
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| // Call the balance retrieval function | ||
| val balance = getAccountBalance(rpcUrl, accountAddress)?.toPlainString() ?: "0.0" | ||
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| Column(modifier = Modifier | ||
| .fillMaxSize() | ||
| .background(Color("#0C0C4F".toColorInt())) | ||
| .padding(16.dp), | ||
| horizontalAlignment = Alignment.CenterHorizontally, | ||
| verticalArrangement = Arrangement.Center){ | ||
| Spacer(modifier = Modifier.height(40.dp)) | ||
| Text( | ||
| text = "Your Account Balance", | ||
| fontFamily = FontFamily(Font(R.font.publicsans_regular)), | ||
| color = Color.White, | ||
| fontSize = 14.sp | ||
| ) | ||
| Spacer(modifier = Modifier.height(8.dp)) | ||
| Text( | ||
| text = "$$balance", | ||
| fontFamily = FontFamily(Font(R.font.inter_regular)), | ||
| color = Color.White, | ||
| fontSize = 28.sp, | ||
| modifier = Modifier | ||
| .align(Alignment.CenterHorizontally) | ||
| .padding(top = 70.dp) | ||
| ) | ||
| Spacer(modifier = Modifier.height(8.dp)) | ||
| Text( | ||
| text = accountAddress, | ||
| fontFamily = FontFamily(Font(R.font.inter_regular)), | ||
| color = Color.White, | ||
| fontSize = 16.sp, | ||
| modifier = Modifier.align(Alignment.CenterHorizontally) | ||
| ) | ||
|
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|
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|
|
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| } | ||
| } | ||
|
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| fun getAccountBalance(rpcUrl: String, accountAddress: String): BigDecimal? { | ||
| val web3j = Web3j.build(HttpService(rpcUrl)) | ||
| return try { | ||
| val ethGetBalance = web3j.ethGetBalance(accountAddress, org.web3j.protocol.core.DefaultBlockParameterName.LATEST).send() | ||
| val balanceInWei = ethGetBalance.balance | ||
| Convert.fromWei(balanceInWei.toString(), Convert.Unit.ETHER) | ||
| } catch (e: Exception) { | ||
| e.printStackTrace() | ||
| null | ||
| } | ||
| } | ||
| } |
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