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AnimatedLoader
import androidx.compose.runtime.Composable
import androidx.compose.runtime.Stable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import com.airbnb.lottie.compose.LottieAnimation
import com.airbnb.lottie.compose.LottieCancellationBehavior
import com.airbnb.lottie.compose.LottieCompositionSpec
import com.airbnb.lottie.compose.LottieConstants
import com.airbnb.lottie.compose.animateLottieCompositionAsState
import com.airbnb.lottie.compose.rememberLottieComposition
import dev.wotosts.lottie.R
/**
* 애니메이션 중간에 로딩이 멈추는 경우 애니메이션을 끝까지 완료한 후 종료되어야 함.
*
* @property playOneTime 1회만 플레이
*/
@Stable
class AnimatedLoaderState(
private val scope: CoroutineScope,
private val playOneTime: Boolean = true,
private val startDelay: Long = 100,
private val onLastAnimatedLoopComplete: () -> Unit = {}
) {
var show by mutableStateOf(false)
var playing by mutableStateOf(false)
private var delayJob: Job? = null
fun startLoading() {
if (show) return
delayJob?.cancel()
delayJob = scope.launch {
delay(startDelay)
playing = true
show = true
}
}
fun endLoading() {
delayJob?.cancel()
playing = false
}
// if !playOneTime -> after called endLoading and animation is completed
// else -> animation is completed
internal fun onAnimationComplete() {
show = false
onLastAnimatedLoopComplete()
}
val repeatCount: Int
get() = if (playOneTime) 1 else LottieConstants.IterateForever
}
@Composable
fun rememberAnimatedLoaderState(
scope: CoroutineScope = rememberCoroutineScope(),
startDelay: Long = 100,
playOneTime: Boolean = false,
onLastAnimatedLoopComplete: () -> Unit = {}
) =
remember(scope, startDelay, playOneTime, onLastAnimatedLoopComplete) {
AnimatedLoaderState(
scope = scope,
startDelay = startDelay,
playOneTime = playOneTime,
onLastAnimatedLoopComplete = onLastAnimatedLoopComplete
)
}
@Composable
fun AnimatedLoader(
modifier: Modifier = Modifier,
state: AnimatedLoaderState = rememberAnimatedLoaderState(),
onLastAnimationComplete: (() -> Unit)? = null
) {
val composition by rememberLottieComposition(spec = LottieCompositionSpec.RawRes(R.raw.loading))
if (state.show) {
val progress by animateLottieCompositionAsState(
composition = composition,
isPlaying = state.playing,
iterations = state.repeatCount,
cancellationBehavior = LottieCancellationBehavior.OnIterationFinish,
restartOnPlay = true
)
val isAnimationCompleted by remember {
derivedStateOf {
progress == 1.0f
}
}
LaunchedEffect(isAnimationCompleted) {
if(isAnimationCompleted) state.onAnimationComplete()
}
LottieAnimation(
modifier = modifier,
composition = composition,
progress = { progress }
)
}
}
@Preview
@Composable
private fun AnimatedLoaderPreview() {
val state = rememberAnimatedLoaderState()
AnimatedLoader(state = state)
}
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.size
import androidx.compose.material3.Card
import androidx.compose.material3.CardDefaults
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.ExperimentalComposeUiApi
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalView
import androidx.compose.ui.unit.dp
import androidx.compose.ui.window.Dialog
import androidx.compose.ui.window.DialogProperties
import androidx.compose.ui.window.DialogWindowProvider
@OptIn(ExperimentalComposeUiApi::class)
@Composable
fun AnimatedLoaderDialog(state: AnimatedLoaderState = rememberAnimatedLoaderState()) {
Dialog(
onDismissRequest = { },
properties = DialogProperties(
dismissOnBackPress = false,
usePlatformDefaultWidth = false
)
) {
val dialogWindowProvider = LocalView.current.parent as? DialogWindowProvider
dialogWindowProvider?.window?.setDimAmount(0f)
// statusbar 색 변경 flag clear 필요
Box(
Modifier
.fillMaxSize(),
contentAlignment = Alignment.Center
) {
Card(
modifier = Modifier
.size(120.dp),
colors = CardDefaults.cardColors(containerColor = Color.LightGray.copy(alpha = 0.5f))
) {
AnimatedLoader(state = state)
}
}
}
}
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import dev.wotosts.lottie.ui.AnimatedLoader
import dev.wotosts.lottie.ui.rememberAnimatedLoaderState
import dev.wotosts.lottie.ui.theme.LottieTheme
class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
LottieTheme {
// A surface container using the 'background' color from the theme
Column(
modifier = Modifier.fillMaxSize()
) {
val state = rememberAnimatedLoaderState()
Row(
modifier = Modifier.fillMaxWidth(),
horizontalArrangement = Arrangement.Center
) {
TextButton(onClick = { state.startLoading() }) {
Text(text = "Start")
}
TextButton(onClick = { state.endLoading() }) {
Text(text = "End")
}
}
//if (state.show) AnimatedLoaderDialog(state = state)
AnimatedLoader(state = state)
}
}
}
}
}
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