MainActivity.kt
package com.cfsuman.jetpackcompose
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.activity.compose.setContent
import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.ExperimentalAnimationApi
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.material.Button
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
class MainActivity : AppCompatActivity() {
@ExperimentalAnimationApi
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
MainContent()
}
}
@ExperimentalAnimationApi
@Composable
fun MainContent(){
val isVisible = remember { mutableStateOf(value = false) }
Column(
modifier = Modifier
.background(Color.LightGray)
.fillMaxSize()
.padding(16.dp),
verticalArrangement = Arrangement.spacedBy(16.dp)
) {
Button(
onClick = { isVisible.value = !isVisible.value }
) {
Text(
text = if (isVisible.value) "Hide" else "Show"
)
}
AnimatedVisibility(isVisible.value) {
Box(
modifier = Modifier
.fillMaxWidth()
.height(275.dp)
.background(Color.Red)
)
}
}
}
@Preview
@Composable
fun ComposablePreview(){
//MainContent()
}
}
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