web3swift | Native ABI parsing | Cryptocurrency library
kandi X-RAY | web3swift Summary
kandi X-RAY | web3swift Summary
web3swift is an iOS toolbelt for interaction with the Ethereum network.
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Trending Discussions on web3swift
QUESTION
I have data fetched from a network request, which is ["0": 1]
. I want to parse the value 1
into either Int
or String
.
If I try to cast the value to either String
, Int
, NSNumber
, or NSString
, I invariably get the following error:
ANSWER
Answered 2021-May-26 at 04:55I digged into the library's code, and found that the library decodes the integers in the response as either BigInt
or BigUInt
. You should know which kind of data you are expecting.
You should try casting to one of those types instead, and since BigInt
or BigUInt
can store numbers that are arbitrarily big, you probably shouldn't convert them to an Int
. You can convert them to String
s (not sure why you want to) using String.init(_:)
.
This is not one of the types of object that JSONSerialization
recognises, so JSONSerialization.isValidJSONObject
returns false.
QUESTION
I am trying to interact with a smart contract I set up.
Basically the goal is to set from an iOS App 5 Parameters
projectTitle
projectLocation
projectStart
projectEnd
teamType
I want the user to set those parameters and write it on the ropsten testnetwork.
I also would like to get the contract information at a later point whenever the user feels for it.
my solidity code is working properly in remix and the contract is already deployed:
...ANSWER
Answered 2021-May-21 at 18:56You are close. Starting with the error "Call can throw, but it is not marked with 'try' and the error is not handled"
this is caused by trying to call
a contract function without using the Try Catch pattern. Do to the way web3 library is designed this patten is necessary for all write and call methods.
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Vulnerabilities
No vulnerabilities reported
Install web3swift
CocoaPods
Carthage
Swift Package Open xcode setting and add this repo as a source
Clone repo
Instal dependencies via ./carthage-build.sh --platform iOS (temp workaround, foe of Carthage bug. For details please look at
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