Cześć,
próbuję sił w jetpack compose...pierwsze kroki ;-)
Napisałem kod zgodnie z tutorialem z tego linka:
Program ( suwak) wywala komunikat
W wykrytych problemach otrzymuję komunikat :
Function "MainContent" is never used
Prośba jak zwykle o jakieś podpowiedzi :-)
Tu kod:
package com.example.suwak
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.Slider
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import kotlin.math.roundToInt
@Composable
fun MainContent(){
var sliderPosition by remember { mutableStateOf(0F)}
Column (Modifier.padding(24.dp),
horizontalAlignment = Alignment.CenterHorizontally,
verticalArrangement = Arrangement.spacedBy(12.dp)
) {
Text(
text= "Float Position (0- 1) : $sliderPosition",
fontWeight = FontWeight.Bold
)
Text(
text= "Int Position (0- 100) : ${(sliderPosition * 100).roundToInt()}",
fontWeight = FontWeight.Bold
)
Slider(
value = sliderPosition,
onValueChange = {sliderPosition = it}
)
}
}