jetpack compose java.lang.IllegalStateException：Start/end 不平衡

Question

这段代码导致了这次崩溃：

我正在使用 compose 版本 1.0.0-alpha06

java.lang.IllegalStateException: Start/end imbalance at androidx.compose.runtime.Composer.finalizeCompose(Composer.kt:2369) at androidx.compose.runtime.Composer.endRoot(Composer.kt:575) at androidx.compose.runtime.Composer.composeInitial(Composer.kt:2054) at androidx.compose.runtime.Recomposer.composeInitial$runtime_release(Recomposer.kt:276) at androidx.compose.runtime.CompositionImpl.setContent(Composition.kt:110) at androidx.compose.ui.platform.WrappedComposition$setContent.invoke(Wrapper.kt:234) at androidx.compose.ui.platform.WrappedComposition$setContent.invoke(Wrapper.kt:-1) at androidx.compose.ui.platform.AndroidComposeView.onAttachedToWindow(AndroidComposeView.kt:627) at android.view.View.dispatchAttachedToWindow(View.java:20479) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3489) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3496) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3496) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3496) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3496) at android.view.AttachInfo_Accessor.setAttachInfo(AttachInfo_Accessor.java:44)

有人可以帮助我吗？谢谢

@Composable
@Preview
private fun Image1() {
    Box(modifier = Modifier.fillMaxWidth().wrapContentHeight()) {
        Image(
                asset = imageResource(id = R.mipmap.fit_static_image_1),
                contentScale = ContentScale.FillWidth,
        )
        Column(Modifier.padding(start = 16.dp, end = 16.dp).align(Alignment.CenterStart), horizontalAlignment = Alignment.Start) {
            Text(
                    color = getColor(id = R.color.white),
                    fontWeight = FontWeight.Bold,
                    fontSize = TextUnit.Sp(18),
                    text = dicString(id = R.string.fit_static_image_1_title),
                    textAlign = TextAlign.Start
            )
            Text(
                    text = dicString(id = R.string.fit_static_image_1_description),
                    color = getColor(id = R.color.white),
                    fontSize = TextUnit.Sp(14),
                    modifier = Modifier.padding(top = 4.dp),
                    textAlign = TextAlign.Start
            )
        }
    }
}

Answer 1

我使用 remember { } 错误，我试图在 dicString 函数中使用它来记住获得的字符串。这导致了这个问题。我通过将资源 ID 作为参数添加到 remember 函数来解决这个问题。 记住( id ) { }

Answer 2

由于在可组合项的构造中缺少数据，从可组合项返回时我遇到了这种情况。

val dataOrNull by viewModel.data.collectAsState(null)

Box {
    MyComposable(
        data = dataOrNull ?: return
    )
}

我在构建树之前通过返回解决了这个问题

val dataOrNull by viewModel.data.collectAsState(null)

val data = dataOrNull ?: return

Box {
    MyComposable(
        data = data
    )
}

Answer 3

我在 compose 版本上遇到了同样的问题 compose_version = '1.1.0' 解决方法是从可组合函数中删除 return 语句。示例：

@Composable
fun Foo() {
    if (true) return // convert to else statement
    Text(text = "foo")
}

jetpack compose java.lang.IllegalStateException：Start/end 不平衡

jetpack compose java.lang.IllegalStateException: Start/end imbalance

android

kotlin

android-jetpack-compose