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社区首页 >问答首页 >为什么我的Jetpack撰写导航应用程序停止？

问为什么我的Jetpack撰写导航应用程序停止？
EN

Stack Overflow用户
提问于 2022-10-11 21:15:13
回答 1查看 53关注 0票数 1

我在练习构图导航。我创建了一个应用程序，该应用程序在我所称的SuccessScreen上显示带有图像的行，当单击某个特定项时，它导航到包含更多信息/详细信息的目的地，我称之为SuccessInfoScreen。为此，我使用了导航组合Arugments。我基本上是通过对Android开发者Rally创作进行基准测试来做到这一点的，包括Tab Row特性。

请表现出一些理解和耐心，我对此有点陌生。

但问题是，当我单击一个项目来导航到应用程序停止的SuccessScreen 时，会停止。--我不知道是什么导致了它，也不知道如何修复它--当我对SuccessScreen进行更改时，它就开始了。

所以我相信问题来自SuccessScreen (记住，我说过这是我导航的目的地)。

我将发布SuccessScreen的代码，这会产生错误，而不是SuccessInfoScreen，因为我不知道代码会更长。

请理解，我安排的代码，以多种组合，以这种格式；

FirstBodyElement -> FirstBodyRow

SecondBodyElement -> SecondBodyGrid

最后，我在SuccessContentScreen上调用SuccessScreen。

请让我及时谈谈我所做的改变，因为我认为这与此有关。

FirstBodyElement；

代码语言：javascript
复制
@Composable
fun FirstBodyElement(
    successInfo: SuccessInfoData,
    onSuccessCardClick: (SuccessInfoData) -> Unit
) {
    Column(
        horizontalAlignment = Alignment.CenterHorizontally,
        modifier = Modifier
            .clickable { onSuccessCardClick(successInfo) }
    ) {
        Image(
            painter = painterResource(successInfo.successInfoImageId),
            contentDescription = null,
            contentScale = ContentScale.Crop,
            modifier = Modifier
                .size(88.dp)
                .clip(RoundedCornerShape(16.dp))
        )

        Text(
            text = successInfo.title,
            style = MaterialTheme.typography.h3,
            modifier = Modifier.paddingFromBaseline(
                top = 24.dp, bottom = 8.dp
            )
        )
    }
}

FirstBodyRow；

代码语言：javascript
复制
@Composable
fun FirstBodyRow(
    successInfo: List<SuccessInfoData>,
    onSuccessCardClick: (SuccessInfoData) -> Unit,
) {
    LazyRow(
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        contentPadding = PaddingValues(horizontal = 16.dp),
        modifier = Modifier
    ) {
        items(
            items = successInfo,
            itemContent = {
                FirstBodyElement(it, onSuccessCardClick)
            }
        )
    }
}

这(FirstBodyRow)是我开始进行更改的地方，我将SuccessInfoData变成List (FirstBodyRow的参数)，所以它变成了successInfo: List<SuccessInfoData>，当然，对于SecondBodyGrid、SuccessContentScreen和SuccessScreen，我也是这样做的。我这样做是因为FirstBodyRow和SecondBodyGrid中的项显示了错误，error: None of the following functions can be called with the arguments supplied.，但是当我将参数作为List传递时，这个错误就消失了。

SecondBodyElement；

代码语言：javascript
复制
@Composable
fun SecondBodyElement(
    successInfo: SuccessInfoData,
    onSuccessCardClick: (SuccessInfoData) -> Unit
) {
    Surface(
        shape = MaterialTheme.shapes.small,
        modifier = Modifier
            .clickable { onSuccessCardClick(successInfo) }
    ) {
        Row(
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .width(192.dp)
        ) {
            Image(
                painter = painterResource(successInfo.successInfoImageId),
                contentDescription = null,
                contentScale = ContentScale.Crop,
                modifier = Modifier
                    .size(56.dp)
            )
            Text(
                text = successInfo.title,
                style = MaterialTheme.typography.h3,
                modifier = Modifier.padding(horizontal = 16.dp)
            )
        }

    }
}

SecondyBodyGrid；

代码语言：javascript
复制
@Composable
fun SecondBodyGrid(
    successInfo: List<SuccessInfoData>,
    onSuccessCardClick: (SuccessInfoData) -> Unit = {},
) {
    LazyHorizontalGrid(
        rows = GridCells.Fixed(2),
        contentPadding = PaddingValues(horizontal = 16.dp),
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalArrangement = Arrangement.spacedBy(8.dp),
        modifier = Modifier.height(120.dp)
    ) {
        items(
            items = successInfo,
            itemContent = {
                SecondBodyElement(it, onSuccessCardClick)
            }
        )
    }
}

SuccessContentScreen；

代码语言：javascript
复制
@Composable
fun SuccessContentScreen(
    modifier: Modifier = Modifier,
    onSuccessCardClick: (List<SuccessInfoData>) -> Unit,
    accountType: String? = SuccessInfoModel.successInfoModelList.first().title
) {

    //val successInfo = remember(accountType) { SuccessInfoModel.getSuccessInfo(accountType) }
    val successInfo = remember(accountType) { SuccessInfoModel.successInfoModelList }

    Column(
        modifier
            .verticalScroll(rememberScrollState())
            .padding(vertical = 16.dp)
    ) {
        SuccessQuote()
        SuccessTitleSection(title = R.string.women_between_18_39) {
            FirstBodyRow(successInfo) { onSuccessCardClick(successInfo) }
        }
        SuccessTitleSection(title = R.string.women_40) {
            SecondBodyGrid(successInfo) { onSuccessCardClick(successInfo) }
        }
    }
}

最后是SuccessScreen；

代码语言：javascript
复制
@Composable
fun SuccessScreen(onSuccessCardClick: (List<SuccessInfoData>) -> Unit) {
    SuccessContentScreen(onSuccessCardClick = onSuccessCardClick)
}

我还将NavHost中的一个函数更改为列表

代码语言：javascript
复制
private fun NavHostController.navigateToSuccessInfoScreen(accountType: List<SuccessInfoData>) {
    this.navigateSingleTopTo("${SuccessInfoDestination.route}/$accountType")
}

我打算用它来导航到SuccessInfoScreen。

要了解更多信息，我将添加以下内容；

代码语言：javascript
复制
....
    fun getSuccessInfo(accountName: String?): SuccessInfoData {
            return successInfoModelList.first { it.title == accountName }
        }
....

这是在SuccessScreen数据/模型(我将它们放在一起)文件中定义的。我从Android开发者的Rally应用程序中复制了它。

我知道这事很多，我很感激你的耐心。没有任何信息太小。

谢谢你提前帮忙。如果您需要任何信息，我非常乐意提供它，谢谢。

编辑；

添加运行错误；

代码语言：javascript
复制
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.think_healthy.keto, PID: 32069
    java.util.NoSuchElementException: Collection contains no element matching the predicate.
        at com.think_healthy.keto.model.SuccessInfoModel.getSuccessInfo(SuccessInfoModel.kt:120)
        at com.think_healthy.keto.ui.screens.success.SuccessInfoScreenKt.SuccessInfoDetails(SuccessInfoScreen.kt:39)
        at com.think_healthy.keto.ui.screens.success.SuccessInfoScreenKt.DisplaySuccessInfo(SuccessInfoScreen.kt:83)
        at com.think_healthy.keto.ui.screens.success.SuccessInfoScreenKt.SuccessInfoScreen(SuccessInfoScreen.kt:31)
        at com.think_healthy.keto.ComposableSingletons$KetoNavHostKt$lambda-3$1.invoke(KetoNavHost.kt:75)
        at com.think_healthy.keto.ComposableSingletons$KetoNavHostKt$lambda-3$1.invoke(KetoNavHost.kt:69)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:116)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.navigation.compose.NavHostKt$NavHost$4$2.invoke(NavHost.kt:163)
        at androidx.navigation.compose.NavHostKt$NavHost$4$2.invoke(NavHost.kt:162)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
        at androidx.compose.runtime.saveable.SaveableStateHolderImpl.SaveableStateProvider(SaveableStateHolder.kt:84)
        at androidx.navigation.compose.NavBackStackEntryProviderKt.SaveableStateProvider(NavBackStackEntryProvider.kt:60)
        at androidx.navigation.compose.NavBackStackEntryProviderKt.access$SaveableStateProvider(NavBackStackEntryProvider.kt:1)
        at androidx.navigation.compose.NavBackStackEntryProviderKt$LocalOwnersProvider$1.invoke(NavBackStackEntryProvider.kt:52)
        at androidx.navigation.compose.NavBackStackEntryProviderKt$LocalOwnersProvider$1.invoke(NavBackStackEntryProvider.kt:51)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
        at androidx.navigation.compose.NavBackStackEntryProviderKt.LocalOwnersProvider(NavBackStackEntryProvider.kt:47)
        at androidx.navigation.compose.NavHostKt$NavHost$4.invoke(NavHost.kt:162)
        at androidx.navigation.compose.NavHostKt$NavHost$4.invoke(NavHost.kt:141)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:116)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.animation.CrossfadeKt$Crossfade$5$1.invoke(Crossfade.kt:133)
        at androidx.compose.animation.CrossfadeKt$Crossfade$5$1.invoke(Crossfade.kt:128)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.animation.CrossfadeKt.Crossfade(Crossfade.kt:142)
        at androidx.compose.animation.CrossfadeKt.Crossfade(Crossfade.kt:73)
        at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:141)
        at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:67)
        at com.think_healthy.keto.KetoNavHostKt.KetoNavHost(KetoNavHost.kt:22)
        at com.think_healthy.keto.ComposableSingletons$MainActivityKt$lambda-2$1$2.invoke(MainActivity.kt:54)
        at com.think_healthy.keto.ComposableSingletons$MainActivityKt$lambda-2$1$2.invoke(MainActivity.kt:53)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:116)
        at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$1.invoke(ComposableLambda.jvm.kt:127)
        at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$1.invoke(ComposableLambda.jvm.kt:127)
E/AndroidRuntime:     at androidx.compose.runtime.RecomposeScopeImpl.compose(RecomposeScopeImpl.kt:145)
        at androidx.compose.runtime.ComposerImpl.recomposeToGroupEnd(Composer.kt:2367)
        at androidx.compose.runtime.ComposerImpl.skipCurrentGroup(Composer.kt:2634)
        at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:3250)
        at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:3228)
        at androidx.compose.runtime.SnapshotStateKt__DerivedStateKt.observeDerivedStateRecalculations(DerivedState.kt:336)
        at androidx.compose.runtime.SnapshotStateKt.observeDerivedStateRecalculations(Unknown Source:1)
        at androidx.compose.runtime.ComposerImpl.doCompose(Composer.kt:3228)
        at androidx.compose.runtime.ComposerImpl.recompose$runtime_release(Composer.kt:3193)
        at androidx.compose.runtime.CompositionImpl.recompose(Composition.kt:753)
        at androidx.compose.runtime.Recomposer.performRecompose(Recomposer.kt:1008)
        at androidx.compose.runtime.Recomposer.access$performRecompose(Recomposer.kt:125)
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:533)
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:502)
        at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:34)
        at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
        at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
        at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:919)
        at android.view.Choreographer.doCallbacks(Choreographer.java:729)
        at android.view.Choreographer.doFrame(Choreographer.java:661)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:907)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6549)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:451)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:888)

从应用程序崩溃的那一刻起，我在LOGCAT上得到了这个错误；

代码语言：javascript
复制
2022-10-12 21:40:36.758 5964-5964/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.think_healthy.keto, PID: 5964
    java.util.NoSuchElementException: Collection contains no element matching the predicate.
        at com.think_healthy.keto.model.SuccessInfoModel.getSuccessInfo(SuccessInfoModel.kt:120)
        at com.think_healthy.keto.ui.screens.success.SuccessInfoScreenKt.SuccessInfoDetails(SuccessInfoScreen.kt:39)
        at com.think_healthy.keto.ui.screens.success.SuccessInfoScreenKt.DisplaySuccessInfo(SuccessInfoScreen.kt:83)
        at com.think_healthy.keto.ui.screens.success.SuccessInfoScreenKt.SuccessInfoScreen(SuccessInfoScreen.kt:31)
        at com.think_healthy.keto.ComposableSingletons$KetoNavHostKt$lambda-3$1.invoke(KetoNavHost.kt:75)
        at com.think_healthy.keto.ComposableSingletons$KetoNavHostKt$lambda-3$1.invoke(KetoNavHost.kt:69)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:116)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.navigation.compose.NavHostKt$NavHost$4$2.invoke(NavHost.kt:163)
        at androidx.navigation.compose.NavHostKt$NavHost$4$2.invoke(NavHost.kt:162)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
        at androidx.compose.runtime.saveable.SaveableStateHolderImpl.SaveableStateProvider(SaveableStateHolder.kt:84)
        at androidx.navigation.compose.NavBackStackEntryProviderKt.SaveableStateProvider(NavBackStackEntryProvider.kt:60)
        at androidx.navigation.compose.NavBackStackEntryProviderKt.access$SaveableStateProvider(NavBackStackEntryProvider.kt:1)
        at androidx.navigation.compose.NavBackStackEntryProviderKt$LocalOwnersProvider$1.invoke(NavBackStackEntryProvider.kt:52)
        at androidx.navigation.compose.NavBackStackEntryProviderKt$LocalOwnersProvider$1.invoke(NavBackStackEntryProvider.kt:51)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
        at androidx.navigation.compose.NavBackStackEntryProviderKt.LocalOwnersProvider(NavBackStackEntryProvider.kt:47)
        at androidx.navigation.compose.NavHostKt$NavHost$4.invoke(NavHost.kt:162)
        at androidx.navigation.compose.NavHostKt$NavHost$4.invoke(NavHost.kt:141)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:116)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.animation.CrossfadeKt$Crossfade$5$1.invoke(Crossfade.kt:133)
        at androidx.compose.animation.CrossfadeKt$Crossfade$5$1.invoke(Crossfade.kt:128)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
        at androidx.compose.animation.CrossfadeKt.Crossfade(Crossfade.kt:142)
        at androidx.compose.animation.CrossfadeKt.Crossfade(Crossfade.kt:73)
        at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:141)
        at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:67)
        at com.think_healthy.keto.KetoNavHostKt.KetoNavHost(KetoNavHost.kt:22)
        at com.think_healthy.keto.ComposableSingletons$MainActivityKt$lambda-2$1$2.invoke(MainActivity.kt:54)
        at com.think_healthy.keto.ComposableSingletons$MainActivityKt$lambda-2$1$2.invoke(MainActivity.kt:53)
        at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:116)
        at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$1.invoke(ComposableLambda.jvm.kt:127)
        at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$1.invoke(ComposableLambda.jvm.kt:127)
        at androidx.compose.runtime.RecomposeScopeImpl.compose(RecomposeScopeImpl.kt:145)
android-jetpack-navigation
android
kotlin
android-jetpack-compose
EN

回答 1

Stack Overflow用户

发布于 2022-10-12 05:29:33

当应用程序停止时，您也可以上传错误报告吗？

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/74034195

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