web3j VS web3.py

Web3j: Lightweight Java and Android library for integration with Ethereum clients. https://www.web3labs.com/web3j-sdk

In the meantime, one thing that might be helpful for Android developers is updating the document and/or providing the workaround. If an Android developer follows the documentation, an app won't work. A note along the lines of "web3j for Android is down until further notice", "join the discord for the android workaround", ... might be helpful. There have been some hints (eg 1, 2) about workarounds setup and use, but as far as we can tell, web3j for android is currently broken. It appears that there might be a workaround for most, basic Android web3j functionality, even with v4.8.8-android. We'll try the discord.

Just to add: there is also web3j (https://github.com/web3j/web3j) for the Java people. You can use Maven/Gradle and it generates stubs (classes) which use can use to call the Smart Contracts on any EVM chain. And it is type-safe (as corresponding Java types are used for the Solidity types).

I'm trying to build a mobile app on a blockchain and unsure if a library like web3j would work with all blockchains that use JSON RPC

Congrats. As a java programmer you might find web3j useful: https://github.com/web3j/web3j

There really wasn’t as of about 2 years ago at least. I worked on a Clojure backend that integrated with Ethereum and went with Java interior using https://github.com/web3j/web3j which wasn’t too painful.

Hey, I develop a crypto trading app for Android and currently started with the implementation of an Ethereum wallet using web3j. If your are interested in contribution just contact me.

Try https://github.com/web3j/web3j

you can also write your own key generator using web3.py (https://github.com/ethereum/web3.py, see this part of the docs https://web3py.readthedocs.io/en/latest/web3.eth.account.html#creating-a-private-key)

I understand from literally the only other thread about this on the internet (https://github.com/ethereum/web3.py/issues/879) that web3 removed 'KeepAliveRPCProvider' from newer versions. Is there a fix for this or is this tool obsolete now?

There's also Github where many people have posted open source projects such as this: https://github.com/ethereum/web3.py

Basically I’m trying to do what nueverest is trying to do here: https://github.com/ethereum/web3.py/issues/685

True but there is a decent amount of support for Python when it comes to Web3 (Web3.py for example). Plus, Python is a great starting language anyway

link to pull request where tests were added (issue #2056)

Another thing you might consider is web3.py. It might not be as useful as javascript libraries (web3/ethers), depending on what you plan to build, but the concepts are all the same and, again, you can leverage existing python knowledge.