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I'm using Geth.aar library for handling ethereum.

I generated the address, gas price, gas estimation, and transaction count.

now I want to sign the transaction.

Please help who knows the answer.

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    I am compiling geth sources into shared library and calling functions in this library from C++, this is how my Ethereum Wallet signs transactions in Android. But this is a bit complicated, you may probably go for running a Javascript implementation in some browser engine or use Java API. – Nulik Aug 13 '18 at 18:38
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Do you want to sign a transaction from your Android application?

For this you can use the Java library Web3j https://web3j.io It simplifies the process of interacting with nodes from applications

  • I'm using Geth.aar library. – Bandish Aug 14 '18 at 10:03
  • If I understand correctly, geth.arr is the implementation of the go-ethereum node for Android. Therefore, I see a scheme of interaction with the Ethereum network: Your app -> Web3j -> Geth – Vasay Aug 14 '18 at 10:12
  • I'm not using Web3j but I'm using android version of go ethereum i.e Geth.aar – Bandish Aug 14 '18 at 10:16

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