Questions tagged [android]

For questions regarding installation, configuration, running and debugging Ethereum software specifically on the Android operating system.

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Android webj3 “insufficient funds for gas * price + value” exception

I'm trying to send ether in my Android app between 2 addresses which were opened using Metamask.io There is a balance of 2 ethers in "from" account. Here the code Web3j web3 = Web3jFactory....
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2answers
2k views

create a mobile wallet for my ERC20

Does anyone know if is there any open source code mobile wallet (Android or IOS) that i can use to store and transfer my custom ERC20 token. I would like to be able to modify it in order to allow it ...
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0answers
571 views

How to create custom ERC20 wallet into my app , to send and receive my tokens?

We have an app for rewards and would like to have a functionality for users to exchange or transfer there tokens to each other. Is there a way i can add that into my app?
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1answer
144 views

Speed up android geth sync

Hi I'm using rinkeby as test node for my mobile app. When I connect to node it need much time for sync mobile client with current head (especially on new accounts). Is there possibility not to ...
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1answer
1k views

Unable to retrieve value from Web3j sendFunds Future

I have been trying to send funds from one ethereum account to another using web3j to test that it works on Android. I am using an Infura cloud instance. First, it appears I need to send it async ...
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1answer
114 views

Any common library for Wallet and smart contract in android,IOS and Web?

Before post this question I researched about Ethereum wallet and smart contract. I saw many of the libraries which support android & iOS in different protocol, but not in a same protocol. So, I am ...
2
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2answers
835 views

Out Of Memory exception when using web3j in Android

I'm trying to integrate web3j in an android application. But the library gives an Out Of Memory exception when loading the wallet file: Credentials credentials = WalletUtils.loadCredentials("password"...
2
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0answers
330 views

mobile geth not connecting to peers

I want to have a mobile geth implementation on my android device and started with this code: https://github.com/ethereum/go-ethereum/wiki/Mobile-Clients:-Libraries-and-Inproc-Ethereum-Nodes . Then i ...
2
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2answers
3k views

Integrate web3.js into a native iOS & Android Apps

Integrating web3.js into a native iOS & Android Apps has issues. I am having difficulty integrating web3.js into a native mobile App (iOS & Android), would it be reasonable to use a cloud ...
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2answers
637 views

web3j WalletUtils.loadCredentials() works in Java, throws java.lang.OutOfMemoryError on Android

I'm trying to use web3j + Infura to interact with the Rinkeby chain from an android app. I first wrote a simple test in Java and everything worked - transactions, interacting with contracts, you name ...
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1answer
363 views

IPFS Android Cant add file

I am using the java-ipfs-api - https://www.npmjs.com/package/geth-private for my android DApp. I have managed to connect to the ipfs daemon and have tested it using the ipfs.refs.local(); command as ...
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1answer
913 views

How to interact with Geth mobile from react-native

I'm working on a react-native dapp to get some experience, but I'm struggling to interact with geth from the javascript side. I'm currently only focused on Android. The Geth client is succesfully ...
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1answer
1k views

How to store user private keys and details

I am creating an android DApp and have used go-ethereum to create wallets for users when they create an account. This stores the private key on their device. I want to also keep all of their details ...
3
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1answer
2k views

Create ethereum wallet inside android dapp

I am creating a DApp for android and want to be able to create a wallet for each user when they register. I am using web3j, can see how to make wallets in the command line but can't see how to do it ...
1
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1answer
746 views

Deploying smart contracts from mobile device

I have recently started learning solidity but I don't have access to a laptop. All I have is a Samsung s4. I know it is not ideal, but is there a wallet that has the ability to deploy from Android
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1answer
3k views

“retrieved hash chain is invalid”

I am currently having problems syncing with rinkeby - was working (very) fine before - anyone else experiencing this? 04-21 03:11:59.352 24740 24767 E GoLog : INFO [04-21|01:11:59] Block ...
5
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1answer
457 views

Mobile Light Client Networking

I've been able to create a private networking using the command line Geth tools, so I have been trying to recreate it using the Android light client Geth. On the command line Geth, I made sure the ...
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1answer
1k views

Failed to check docker installation: exec: “docker”: executable file not found in $PATH

I am trying to create an Android Node for Ethereum using go implementation. I am following this link - https://github.com/Seedstars/go-ethereaum-android. During installation process I am running below ...
3
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1answer
1k views

Starting a private geth node on android studio?

I want to start a private node of go-ethereum on android-studio. I have tried this to start a private node but I am getting the error geth not running: https://github.com/karalabe/geth-sandbox/tree/...
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1answer
692 views

How to do a testnet transaction on Android with Geth 1.5.9?

I'm trying to build a DApp on Android with Geth 1.5.9. After some research and coding I managed to find the information to install/run a geth node and also create some accounts with Android Studio. ...
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0answers
27 views

Peer is constantly lying ( or just confused about the current head) [duplicate]

I think every one should have the right to disagree about the chain head - but he should not tell me all the time: GoLog: I0305 11:44:49.604203 eth/downloader/downloader.go:640] Peer f61925002670fd0a ...
5
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2answers
801 views

Is there an iOS equivalent for the Android web3j (json-rpc) library?

This question (Ethereum library for iOS/Android?) showed me the way to web3j, but I also need a similar solution for iOS. Does anyone know of such a project?
3
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0answers
95 views

Time to first block

I am experience long waiting times from start of the block-sync to the first block. Is there any way I can speed this up? 02-08 17:21:37.971 23640 23659 E GoLog : I0208 16:21:37.980483 eth/...
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0answers
186 views

go.Universe$proxyerror: invalid transaction v, r, s values

I am getting this crash: go.Universe$proxyerror: invalid transaction v, r, s values at org.ethereum.geth.EthereumClient.getBlockByNumber(Native Method) for this call: ethClient.getBlockByNumber(...
2
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1answer
435 views

How can you connect to a private chain with the Android client library?

There doesn't seem to be much documentation for the mobile Ethereum libraries yet, at least that I could find. I know they are still in development, but is there any way to set the Genesis file ...
11
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1answer
1k views

How to connect an Android App user to ethereum network?

I'm working on developing a decentralized application which requires every user of the Android app to have separate account containing his ether balance information and other user-specific information....
3
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0answers
300 views

tyring to sync ropsten testnet with android-inproc: Rolled back 2 headers

I am trying to sync the new testnet with the android inproc node ( tried with geth-1.5.3, geth-1.5.4-SNAPSHOT and geth-1.5.5-SNAPSHOT ) getting this log: 11-28 20:00:29.957 6637 6861 E GoLog : ...
2
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1answer
421 views

Would running an ethereum node of a private network in android drain battery?

I am building an android application where users can pay for items they buy with ether. Application will use a private ethereum network. As I understood, I have to run an ethereum node in the android ...
8
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1answer
544 views

No signer to authorize the transaction with

When trying to make a transaction on a boundContract with geth-api through the library of @karalabe. I am missing a way to get the signer. I only see the interface for signer in the aar but no way to ...
21
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0answers
540 views

E/Go: fatal error: thread exhaustion

I am experimenting with the geth-android library with light-client and in-process node from @karalabe. I could successfully sync with the testnet node from @phonikg, unfortunately this one is down now....
4
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0answers
401 views

Is there an app to read QR code of smartcontract bytecode and trigger it?

I want to know if there is a workaround for a smartphone user to simply scan a QR code that would trigger a transaction using a custom smartcontract (not a native currency). The contract would behave ...
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2answers
130 views

Is there any way to install an Ethereum wallet on a Non-Google Android device?

I have an Android device running Cyanogen Mod without Google services, but it seems all Android applications for Ethereum ship via Google Play only. I kindly requested the Jaxx developers multiple ...
8
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2answers
1k views

Light clients for android

I am trying to develop an android wallet using Ethereum go and I ran the DroidGeth from this link. I tried to ran ethereum on the testnet, but its taking for ever to download the blockchain. How can ...
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0answers
66 views

Wrapper for Jaxx

I would like to build android or iOS application that can send and receive data with contract. I can simply use JAXX, which can let me send 'data' to the contract. But the only problem is that I have ...
-1
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1answer
2k views

Tutorial for ethereum wallet creation in android [duplicate]

I am very new to ethereum and would like to learn it. Is there some tutorial available which lets me create an ethereum wallet for android ?
3
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1answer
2k views

Android Ethereum wallet for a private blockchain?

Is there any android wallet that can be customized to operate on a private Ethereum blockchain? I need to send/receive transactions and run simple queries on the blockchain data. I'm not looking for ...
4
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2answers
3k views

Generating Ethereum Private Key,Public Key On Mobile (Android/Java)

I'm looking for a way to generate Ethereum private keys and public keys inside an Android app. I've scavenged the web and ultimately decided to tear apart the code to myetherwallet and import the same ...
4
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4answers
5k views

Ethereum library for iOS/Android?

Are there any existing native libraries (not whole wallets, I do not need a UI but want to sign transactions and call smart contract functions embedded in another app) for iOS or Android? If not, are ...
17
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1answer
363 views

Can Ethereum be pruned to the extent that it could be run from a Raspberry Pi?

What are the limits to how much the ETH blockchain can be pruned. Will ETH ever be practical on devices with limited resources such as a Raspberry Pi, Android or iOS wallet?
8
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1answer
2k views

What can I use to interact with the Ethereum network from an Android device?

From my research, until I can build an Ethereum node on an Android device I’ll need to use a public API to interact with the network, such as BlockApps (http://www.blockapps.net/documentation#...
13
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4answers
10k views

Are there any android wallets for Ethereum? [closed]

What Ethereum wallets are available for Android? Or which ones are still being developed?
8
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2answers
2k views

Ethereum light client roadmap?

The Ethereum roadmap makes no mention about when to expect a light client. Anyone has any insights on when we could expect to see a light client that could efficiently run on, say, an Android device?

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