TrustSDK-Android
Getting started
The TrustSDK lets you sign Ethereum transactions and messages so that you can bulid a native DApp without having to worry about keys or wallets. Follow these instructions to integrate TrustSDK in your native DApp.
Demo
Add dependency
- Add jitpack to your root gradle file at the end of repositories:
allprojects {
repositories {
...
maven { url 'https://jitpack.io'}
}
}
- Add dependency to your module:
dependencies {
implementation 'com.github.TrustWallet:TrustSDK-Android:$version'
}
Handle Trust callbacks
In your signing activity Trust
.
import Trust
Override onActivityResult
to obtain the signing result. Handle the response data and pass onSuccessListener and onFailureListener.
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
signMessageCall?.let {
it.onActivityResult(requestCode, resultCode, data) {response ->
Log.d("SIGN_TAG", "Data: " + response.result)
}
}
signTransactionCall?.let {
it.onActivityResult(requestCode, resultCode, data) {response ->
Log.d("SIGN_TAG", "Data: " + response.result)
}
}
}
Sign a transaction
To sign a transaction use this code:
Trust.signTransaction()
.recipient(Address("0x3637a62430C67Fe822f7136D2d9D74bDDd7A26C1"))
.gasPrice(BigInteger.valueOf(16).multiply(BigInteger.TEN.pow(9)))
.gasLimit(21000)
.value(BigDecimal.valueOf(0.3).multiply(BigDecimal.TEN.pow(18)).toBigInteger())
.nonce(0)
.payload("0x")
.call(this)
Sign a message
To sign a message use this code:
Trust.signMessage()
.message("message to be signed")
.call(this)
Sign a personal message
To sign a personal message use this code:
Trust.signPersonalMessage()
.message("message to be signed")
.call(this)
Example
Trust SDK includes an example project with the above code. To run the example project clone the repo and build the project with Android Studio. Run the app on your emulator or device. Make sure that you have Trust Wallet installed on the device or simulator to test the full callback flow.
Authors
- Maxim Rasputin
- Marat Subkhankulov
License
TrustSDK is available under the MIT license. See the LICENSE file for more info.