> For the complete documentation index, see [llms.txt](https://dev-docs.dcentwallet.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev-docs.dcentwallet.com/dcent-biometric-wallet-for-mobile/dcent-biometric-sdk-android/klaytn.md).

# Klaytn

## **getKalytnSignedTransaction**

The D'CENT Android SDK provides functions for signing transaction of coins.

**This function for :**

* `KLAYTN` (KLAY)
* `KLAYTN_ERC20` - klaytn token
* `KLAY_BAOBAB` (KLAYt)
* `KRC20_BAOBAB`

### **Parameters**

| Parameter   | Type                                          | Description                    |
| ----------- | --------------------------------------------- | ------------------------------ |
| coinType    | `CoinType`                                    | klaytn coin type.              |
| transaction | [KlaytnTransaction](#class-klaytntransaction) | klaytn transaction parameters. |

#### **class KlaytnTransaction**

<table><thead><tr><th width="167.33333333333331">Name</th><th width="160">Type</th><th>Description</th></tr></thead><tbody><tr><td>hdKeyPath</td><td><code>Bip44KeyPath</code></td><td>sign key path for klaytn transaction</td></tr><tr><td>nonce</td><td><code>String</code></td><td>account nonce for klaytn transaction</td></tr><tr><td>toAddr</td><td><code>String</code></td><td>address to send</td></tr><tr><td>amount</td><td><code>String</code></td><td>amount of ETH to send</td></tr><tr><td>gasLimit</td><td><code>String</code></td><td>gas limit value</td></tr><tr><td>gasPrice</td><td><code>String</code></td><td>gas price for klaytn transaction</td></tr><tr><td>data</td><td><code>String</code></td><td>transaction data of klaytn transaction</td></tr><tr><td>chainId</td><td><code>int</code></td><td>chain id</td></tr><tr><td>txType</td><td><code>KlaytnTxType</code></td><td>(optional)Type of klaytn transaction<br>This can be set using the <code>setOptionAttribute()</code> method. The default is <code>TX_TYPE_LEGACY</code></td></tr><tr><td>fromAddr</td><td><code>String</code></td><td>(optional)Signer's Address of klaytn transaction<br>This can be set using the <code>setOptionAttribute()</code> method.</td></tr><tr><td>feeRatio</td><td><code>int</code></td><td>(optional)Fee Ratio of klaytn transaction<br>This can be set using the <code>setOptionAttribute()</code> method.</td></tr><tr><td>tokenName</td><td><code>String</code></td><td>(optional)token name of contract for <code>KLAYTN_ERC20</code> transaction<br>This can be set using the <code>setTokenAttribute()</code>method. </td></tr><tr><td>decimals</td><td><code>String</code></td><td>(optional)decimals of contract for <code>KLAYTN_ERC20</code> transaction<br>This can be set using the <code>setTokenAttribute()</code>method.</td></tr><tr><td>symbol</td><td><code>String</code></td><td>(optional)symbol of contract for <code>KLAYTN_ERC20</code> transaction<br>This can be set using the <code>setTokenAttribute()</code>method.</td></tr></tbody></table>

### **Returns**

`String` - signed transaction.

**Example**

```java
KlaytnTransaction klaytnTransanction;
klaytnTransanction = new KlaytnTransaction.Builder()
                .keyPath(Bip44KeyPath.valueOf("m/44'/8217'/0'/0/0"))
                .nonce("0")
                .toAddr("0x732E035fBdb9E5AB5Ef80c08f6aA081d029984dc")
                .amount("1000000000000000000")
                .gasLimit("25000")
                .gasPrice("25000000000")
                .data("")
                .chainId(1001)
                .build();

String response = mDcentmanager.getKlaytnSignedTransaction(CoinType.KLAYTN, klaytnTransanction);
```