androidandroid-studiokotlinbitcoinbitcoinj

Bitcoinj is not syncing with Android

My Android app is not syncing to the blockchain, but when I used the bitcoinj library on my PC it worked fine.

Note: both programs start with

walletAppKit.setBlockingStartup(false).startAsync().awaitRunning()

when the kit is complete and the app calls this on the onCreate method and has sufficient permissions such as read/write and internet. The test device is also physical and not an emulator.

I logged both programs using

var str = "Creation-Time:${walletAppKit.wallet().earliestKeyCreationTime} \n" + 
               "AppKit Running: ${walletAppKit.isRunning}\n" +
               " File Directory:${walletAppKit.directory()}\nTransactions:\n"
try {
    for (x in walletAppKit.wallet().transactionsByTime) {
        str += "${x.txId}\n"
    }

    str += "Peer # and running:${walletAppKit.peerGroup().numConnectedPeers()} ${walletAppKit.peerGroup().isRunning}\n"
    str += "Chain Height: ${walletAppKit.chain().chainHead.height}\n"
    str += "Balance: ${walletAppKit.wallet().balance.toPlainString() } BTC Received: ${walletAppKit.wallet().totalReceived.toPlainString() } BTC Sent: ${walletAppKit.wallet().totalSent.toPlainString() } BTC\n"
    str += "Directory Status: ${walletAppKit.directory().totalSpace} bytes\n Can Read File?:${walletAppKit.directory().canRead()} Can Write File?:${walletAppKit.directory().canWrite()}"

Here is the logging output screenshots:

enter image description here

enter image description here

You'll notice that the one with TX-IDS is running on my laptop and has a way bigger block amount than the one running on the phone, how can I get this synced up?

Solution

  • Use the kotlin bitcoin kit provided by horizontal systems on github. Use implementation 'com.github.horizontalsystems:bitcoin-kit-android:694d681f3e' in your gradle module and in your project module add mavenCentral()in the buildscript branch:

    buildscript {

    repositories {

    other stuff

    mavenCentral()

    }

    dependencies {

    }

    }

    Then in the allprojects brackets place maven { url 'https://www.jitpack.io' } in the repositories brackets:

    allprojects{

    repositories{

    *other stuff*

    maven { url 'https://www.jitpack.io' }

    }

    }