Things to know about in Jetpack Compose.

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In this article we will see some common things in jetpack compose

1). Get Context of the current screen

@Composable
fun FindContext() {
    
    val context = LocalContext.current
    
    Toast.makeText(context,"Hey",Toast.LENGTH_LONG).show()
    
}

We get the context through LocalContext.currrent composition local

2). Auto Focus on TextField

Get auto focus on textfield , when it visible for the first time.

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun FocusOnTextField(
    modifier: Modifier = Modifier
) {

    val focusRequester = remember { FocusRequester() }

    LaunchedEffect(key1 = Unit) {
        focusRequester.requestFocus()
    }
    Box(modifier = modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
        TextField(
            value = "",
            onValueChange = {},
            placeholder = { Text(text = "Enter username") },
            modifier = Modifier.focusRequester(focusRequester)
        )
    }

}