MainActivity.kt
package com.cfsuman.jetpackcompose
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.activity.compose.setContent
import androidx.compose.animation.core.*
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Circle
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
MainContent()
}
}
@Composable
fun MainContent(){
val isEnabled = remember { mutableStateOf(true) }
val isTop = remember { mutableStateOf(true) }
val offset: Offset by animateOffsetAsState(
targetValue = if (isTop.value)
Offset(0f, 0f) else Offset(100f, 300f),
animationSpec = tween(
durationMillis = 2000, // duration
easing = FastOutSlowInEasing
),
finishedListener = {
// disable the button
isEnabled.value = true
}
)
Column(
modifier = Modifier
.fillMaxSize()
.background(Color(0xFFCCCCFF))
.padding(16.dp),
verticalArrangement = Arrangement.spacedBy(16.dp),
horizontalAlignment = Alignment.CenterHorizontally
) {
Button(
onClick = {
isTop.value = !isTop.value
isEnabled.value = false
},
colors = ButtonDefaults.buttonColors(
Color(0xFF32127A), Color(0xCCFFFFFF)
),
enabled = isEnabled.value
) {
Text(
text = "Animate Offset Change",
modifier = Modifier.padding(12.dp)
)
}
Icon(
Icons.Filled.Circle,
contentDescription = "Localized description",
Modifier
.size(150.dp)
.offset(offset.x.dp, offset.y.dp),
tint = Color(0xFF000080)
)
}
}
@Preview
@Composable
fun ComposablePreview(){
//MainContent()
}
}
- jetpack compose - AnimateColorAsState
- jetpack compose - AnimateColorAsState duration
- jetpack compose - AnimateDpAsState
- jetpack compose - Infinite color animation
- jetpack compose - Swiping
- jetpack compose - Panning zooming rotating
- jetpack compose - Weight modifier
- jetpack compose - TextField input type
- jetpack compose - TextField clear focus
- jetpack compose - TextField focus change listener
- jetpack compose - LazyColumn add remove item
- jetpack compose - LazyColumn selectable
- jetpack compose - Box vs Surface
- jetpack compose - Column center
- jetpack compose - Column background color