android 如何使用Jetpack Compose和AnimatedVisibility仅为项目可见性设置一次动画？

0ve6wy6x 于 2023-05-12 发布在 Android

关注(0)|答案(1)|浏览(151)

所以当我加上

val state = remember {
    MutableTransitionState(false)
}
state.targetState = true
AnimatedVisibility(
    visibleState = state,
    enter = slideInHorizontally(
        animationSpec = tween(
            durationMillis = 250,
            delayMillis = animationDelay
        ),
        initialOffsetX = {
            screenWidthPx
        }
    )
) {
    content()
}

当我从另一个（popBackStack/naivateUp）返回到这个屏幕或在配置更改期间，动画一直被触发。
如何只设置一次动画？

android

来源：https://stackoverflow.com/questions/76203224/how-to-animate-item-visibility-only-once-with-jetpack-compose-and-animatedvisibi

1条答案

按热度按时间

mnemlml81#

每次在remember范围之外，都将目标状态显式设置为true，现在目标状态也将被记住，并且除非将目标状态设置为false，否则它将不会动画

val state = remember {
    MutableTransitionState(false).apply {
      targetState = true
    }
}
AnimatedVisibility(
    visibleState = state,
    enter = slideInHorizontally(
        animationSpec = tween(
            durationMillis = 250,
            delayMillis = animationDelay
        ),
        initialOffsetX = {
            screenWidthPx
        }
    )
) {
    content()
}

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android 如何使用Jetpack Compose和AnimatedVisibility仅为项目可见性设置一次动画？

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