Can i use Jsoup in Jetpack Compose in kotlin

Issue

In traditional xml way , i use GlobalScope.launch{} with runOnUiThread {} to work with Jsoup.But in jetpack Compose this not work anymore. It just instant closed when run it.

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        GlobalScope.launch{

            val url="somewebsite.com"
            var doc= Jsoup.connect(url).get()

          runOnUiThread {
          }
        }

        setContent {
            WannaJsoupTheme {

                Surface(color = MaterialTheme.colors.background) {
                    Greeting("Android")
                }
            }
        }
    }
}

Solution

💬Explanation

Based on the above code, apparently you're using the main thread to perform I/O operations. Main thread are generally used for user interface operations. It's better to use background threads for I/O operations. - They are more efficient.

Here's demo app which I created to demonstrate use of JSoup with MVVM architecture.

Link - https://github.com/TheCodeMonks/NYTimes-App

Solution - https://gist.github.com/Spikeysanju/111e061ad82f3b7be6beb419fb18bca4

👇 Quick Solution

class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContent {
        
        // Initiate Coroutine scope
        val scope = rememberCoroutineScope()
        var text by remember {
            mutableStateOf("")
        }

        JsoupTheme {
            // A surface container using the 'background' color from the theme
            Surface(
                modifier = Modifier.fillMaxSize(),
                color = MaterialTheme.colors.background
            ) {

                // Initiate coroutine scope will will run on IO thread &  write method to get the text from the website
                scope.launch(Dispatchers.IO) {
                    val url = "https://en.wikipedia.org/wiki/Steve_Jobs"
                    Jsoup.connect(url).get().also {
                        text = it.text()
                    }
                }

                // Fetch result from the state variable [Text]
                Text(text = "Result: $text")

            }
        }
    }
}

}

Answered By - Spikeysanju