Web3j: why RemoteFunctionCall cannot resolved in 4.2.0-android?

[parcool]

titile

org.web3j.protocol.core.RemoteFunctionCall cannot resolved in 4.2.0-android.

description

I use the web3j solidity gennerate cmd try to gennerate a java-class to transfer ERC-20 tokens,but some api not found that looks like version incompatible.

step:

• copy the contract code form etherscan.io
• $ solcjs USDP.sol --bin --abi --optimize -o .
• $ web3j solidity generate --javaTypes -b ~/USDP_sol_TetherToken.bin -a ~/USDP_sol_TetherToken.abi -o ~ -p com.test.mywallet.stablecoin.eth.usdt
• copy it to my project.

anyone can help me?

[seansanders]

I actually had this error myself.
What I found I had to do was be sure to include in my build.gradle file implementation('org.web3j:core:4.5.6').
This will have to be placed in your dependencies location.
Also, as a side note, be sure to enable the permissions for internet access in your andoridManifest.xml file.
It seems like your wrapper web3j command is correct.

[AlexandrouR]

@parcool is this still an issue?

[Struka9]

@parcool is this still an issue?

I think it is, just tried and seems to be missing from 4.2.0-android

[sonh]

I has the same issue when using only "org.web3j:core:4.2.0-android"

[kuabhish]

Same problem I am also facing.

I think the problem is that I used the web3j cli to generate the smart contract in java.
and web3j cli version is 4.5.16. but the android version is 4.2.x (tried on both 4.2.1 and 4.2.0)

So, i was trying to run the
https://docs.web3j.io/smart_contracts/#solidity-smart-contract-wrappers
commands in java ... (which is not available in 4.2.1)

how should i write the commands properly in the java code?

[AlexandrouR]

This issue is no longer relevant as the latest android version is 4.6.0 therefore this should be fixed. If however, the issue persists please create a new issue.