Jetpack Compose 未解决的引用错误。

Question

我一直遇到这些问题，请帮忙解决。

我想在 Jetpack Compose 中显示一个动画 drawable。

错误 -

e: /myproject/../MainActivity.kt: (42, 17): Unresolved reference: animatedVectorResource
e: /myproject/../MainActivity.kt: (43, 18): Unresolved reference: remember
e: myproject/../MainActivity.kt: (43, 29): Unresolved reference: mutableStateOf

我有这些导入-

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.material3.Text
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.DisposableEffect
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.Modifier
import com.google.accompanist.systemuicontroller.rememberSystemUiController
import androidx.compose.foundation.layout.Column
import androidx.compose.material.MaterialTheme
import androidx.compose.foundation.Image
import androidx.compose.ui.graphics.painter.Painter
import androidx.compose.ui.res.painterResource
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.ui.layout.ContentScale

我的代码

val image = animatedVectorResource(R.drawable.test)
    var atEnd by remember { mutableStateOf(false) }
    Image(painter = image.painterFor(atEnd),contentDescription = "",modifier = Modifier.fillMaxSize(), contentScale = ContentScale.FillBounds)
    Column(modifier = Modifier.fillMaxSize()){
        Text("Hello")
        Text("World")
    }

请帮助我。 我使用这个IDE。 我正在学习Jetpack Compose，也就是说我完全是Jetpack Compose的初学者。

- Dave Co.

Answer 1

对于 remember 和 mutableStateOf，请添加以下导入语句：

import androidx.compose.runtime.*

对于animatedVectorResource，请添加androidx.compose.animation:animation-graphics依赖项并使用。

 import androidx.compose.animation.graphics.res.animatedVectorResource
 import androidx.compose.animation.graphics.vector.AnimatedImageVector

 val image = AnimatedImageVector.animatedVectorResource(R.drawable.test)

- Gabriele Mariotti