小编Leb*_*ebo的帖子

您好，我试图找到一些帮助，我正在使用正确的导入语句 import androidx.compose.ui.Modifier 但我收到错误消息 e: /Users/lebo/AndroidStudioProjects/BasicsCodelab/app/src/main/java /com/example/basicscodelab/MainActivity.kt: (36, 68): 未解析的参考: dp

我的代码看起来像这样，但是当我添加填充时它停止工作

package com.example.basicscodelab

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import com.example.basicscodelab.ui.theme.BasicsCodelabTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            BasicsCodelabTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {
                    Greeting("Android")
                }
            }
        }
    }
}

@Composable …