App always uses default theme instead of custom theme
03:27 09 Jan 2025

I'm taking a course "Android basics with Jetpack compose" codelab: Please explain how I should fix my code... My result: enter image description here

Desired result: enter image description here

Colors.kt

package com.example.woof.ui.theme

import androidx.compose.ui.graphics.Color

val md_theme_light_primary = Color(0xFF006C4C)
val md_theme_light_onPrimary = Color(0xFFFFFFFF)
val md_theme_light_primaryContainer = Color(0xFF89F8C7)
val md_theme_light_onPrimaryContainer = Color(0xFF002114)
val md_theme_light_secondary = Color(0xFF4D6357)
val md_theme_light_onSecondary = Color(0xFFFFFFFF)
val md_theme_light_secondaryContainer = Color(0xFFCFE9D9)
val md_theme_light_onSecondaryContainer = Color(0xFF092016)
val md_theme_light_tertiary = Color(0xFF3D6373)
val md_theme_light_onTertiary = Color(0xFFFFFFFF)
val md_theme_light_tertiaryContainer = Color(0xFFC1E8FB)
val md_theme_light_onTertiaryContainer = Color(0xFF001F29)
val md_theme_light_error = Color(0xFFBA1A1A)
val md_theme_light_errorContainer = Color(0xFFFFDAD6)
val md_theme_light_onError = Color(0xFFFFFFFF)
val md_theme_light_onErrorContainer = Color(0xFF410002)
val md_theme_light_background = Color(0xFFFBFDF9)
val md_theme_light_onBackground = Color(0xFF191C1A)
val md_theme_light_surface = Color(0xFFFBFDF9)
val md_theme_light_onSurface = Color(0xFF191C1A)
val md_theme_light_surfaceVariant = Color(0xFFDBE5DD)
val md_theme_light_onSurfaceVariant = Color(0xFF404943)
val md_theme_light_outline = Color(0xFF707973)
val md_theme_light_inverseOnSurface = Color(0xFFEFF1ED)
val md_theme_light_inverseSurface = Color(0xFF2E312F)
val md_theme_light_inversePrimary = Color(0xFF6CDBAC)
val md_theme_light_shadow = Color(0xFF000000)
val md_theme_light_surfaceTint = Color(0xFF006C4C)
val md_theme_light_outlineVariant = Color(0xFFBFC9C2)
val md_theme_light_scrim = Color(0xFF000000)

val md_theme_dark_primary = Color(0xFF6CDBAC)
val md_theme_dark_onPrimary = Color(0xFF003826)
val md_theme_dark_primaryContainer = Color(0xFF005138)
val md_theme_dark_onPrimaryContainer = Color(0xFF89F8C7)
val md_theme_dark_secondary = Color(0xFFB3CCBE)
val md_theme_dark_onSecondary = Color(0xFF1F352A)
val md_theme_dark_secondaryContainer = Color(0xFF354B40)
val md_theme_dark_onSecondaryContainer = Color(0xFFCFE9D9)
val md_theme_dark_tertiary = Color(0xFFA5CCDF)
val md_theme_dark_onTertiary = Color(0xFF073543)
val md_theme_dark_tertiaryContainer = Color(0xFF244C5B)
val md_theme_dark_onTertiaryContainer = Color(0xFFC1E8FB)
val md_theme_dark_error = Color(0xFFFFB4AB)
val md_theme_dark_errorContainer = Color(0xFF93000A)
val md_theme_dark_onError = Color(0xFF690005)
val md_theme_dark_onErrorContainer = Color(0xFFFFDAD6)
val md_theme_dark_background = Color(0xFF191C1A)
val md_theme_dark_onBackground = Color(0xFFE1E3DF)
val md_theme_dark_surface = Color(0xFF191C1A)
val md_theme_dark_onSurface = Color(0xFFE1E3DF)
val md_theme_dark_surfaceVariant = Color(0xFF404943)
val md_theme_dark_onSurfaceVariant = Color(0xFFBFC9C2)
val md_theme_dark_outline = Color(0xFF8A938C)
val md_theme_dark_inverseOnSurface = Color(0xFF191C1A)
val md_theme_dark_inverseSurface = Color(0xFFE1E3DF)
val md_theme_dark_inversePrimary = Color(0xFF006C4C)
val md_theme_dark_shadow = Color(0xFF000000)
val md_theme_dark_surfaceTint = Color(0xFF6CDBAC)
val md_theme_dark_outlineVariant = Color(0xFF404943)
val md_theme_dark_scrim = Color(0xFF000000)

Themes.kt

package com.example.woof.ui.theme

import android.app.Activity
import android.os.Build
import android.view.View
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.darkColorScheme
import androidx.compose.material3.dynamicDarkColorScheme
import androidx.compose.material3.dynamicLightColorScheme
import androidx.compose.material3.lightColorScheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.SideEffect
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.toArgb
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalView
import androidx.core.view.WindowCompat

private val LightColors = lightColorScheme(
    primary = md_theme_light_primary,
    onPrimary = md_theme_light_onPrimary,
    primaryContainer = md_theme_light_primaryContainer,
    onPrimaryContainer = md_theme_light_onPrimaryContainer,
    secondary = md_theme_light_secondary,
    onSecondary = md_theme_light_onSecondary,
    secondaryContainer = md_theme_light_secondaryContainer,
    onSecondaryContainer = md_theme_light_onSecondaryContainer,
    tertiary = md_theme_light_tertiary,
    onTertiary = md_theme_light_onTertiary,
    tertiaryContainer = md_theme_light_tertiaryContainer,
    onTertiaryContainer = md_theme_light_onTertiaryContainer,
    error = md_theme_light_error,
    errorContainer = md_theme_light_errorContainer,
    onError = md_theme_light_onError,
    onErrorContainer = md_theme_light_onErrorContainer,
    background = md_theme_light_background,
    onBackground = md_theme_light_onBackground,
    surface = md_theme_light_surface,
    onSurface = md_theme_light_onSurface,
    surfaceVariant = md_theme_light_surfaceVariant,
    onSurfaceVariant = md_theme_light_onSurfaceVariant,
    outline = md_theme_light_outline,
    inverseOnSurface = md_theme_light_inverseOnSurface,
    inverseSurface = md_theme_light_inverseSurface,
    inversePrimary = md_theme_light_inversePrimary,
    surfaceTint = md_theme_light_surfaceTint,
    outlineVariant = md_theme_light_outlineVariant,
    scrim = md_theme_light_scrim,
)


private val DarkColors = darkColorScheme(
    primary = md_theme_dark_primary,
    onPrimary = md_theme_dark_onPrimary,
    primaryContainer = md_theme_dark_primaryContainer,
    onPrimaryContainer = md_theme_dark_onPrimaryContainer,
    secondary = md_theme_dark_secondary,
    onSecondary = md_theme_dark_onSecondary,
    secondaryContainer = md_theme_dark_secondaryContainer,
    onSecondaryContainer = md_theme_dark_onSecondaryContainer,
    tertiary = md_theme_dark_tertiary,
    onTertiary = md_theme_dark_onTertiary,
    tertiaryContainer = md_theme_dark_tertiaryContainer,
    onTertiaryContainer = md_theme_dark_onTertiaryContainer,
    error = md_theme_dark_error,
    errorContainer = md_theme_dark_errorContainer,
    onError = md_theme_dark_onError,
    onErrorContainer = md_theme_dark_onErrorContainer,
    background = md_theme_dark_background,
    onBackground = md_theme_dark_onBackground,
    surface = md_theme_dark_surface,
    onSurface = md_theme_dark_onSurface,
    surfaceVariant = md_theme_dark_surfaceVariant,
    onSurfaceVariant = md_theme_dark_onSurfaceVariant,
    outline = md_theme_dark_outline,
    inverseOnSurface = md_theme_dark_inverseOnSurface,
    inverseSurface = md_theme_dark_inverseSurface,
    inversePrimary = md_theme_dark_inversePrimary,
    surfaceTint = md_theme_dark_surfaceTint,
    outlineVariant = md_theme_dark_outlineVariant,
    scrim = md_theme_dark_scrim,
)

@Composable
fun WoofTheme(
    darkTheme: Boolean = isSystemInDarkTheme(),
    // Dynamic color is available on Android 12+
    dynamicColor: Boolean = false,
    content: @Composable () -> Unit
) {
    val colorScheme = when {
        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
            val context = LocalContext.current
            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
        }
        darkTheme -> DarkColors
        else -> LightColors
    }
    val view = LocalView.current
    if (!view.isInEditMode) {
        SideEffect {
            setUpEdgeToEdge(view, darkTheme)
        }
    }

    MaterialTheme(
        colorScheme = colorScheme,
        shapes = Shapes,
        typography = Typography,
        content = content
    )
}

private fun setUpEdgeToEdge(view: View, darkTheme: Boolean) {
    val window = (view.context as Activity).window
    WindowCompat.setDecorFitsSystemWindows(window, false)
    window.statusBarColor = Color.Transparent.toArgb()
    val navigationBarColor = when {
        Build.VERSION.SDK_INT >= 29 -> Color.Transparent.toArgb()
        Build.VERSION.SDK_INT >= 26 -> Color(0xFF, 0xFF, 0xFF, 0x63).toArgb()
        // Min sdk version for this app is 24, this block is for SDK versions 24 and 25
        else -> Color(0x00, 0x00, 0x00, 0x50).toArgb()
    }
    window.navigationBarColor = navigationBarColor
    val controller = WindowCompat.getInsetsController(window, view)
    controller.isAppearanceLightStatusBars = !darkTheme
    controller.isAppearanceLightNavigationBars = !darkTheme
}

MainActivity.kt (updated)


package com.example.woof

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.annotation.DrawableRes
import androidx.annotation.StringRes
import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.statusBarsPadding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.material3.Card
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.res.dimensionResource
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import com.example.woof.data.Dog
import com.example.woof.data.dogs
import com.example.woof.ui.theme.WoofTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContent {
            WoofTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize().statusBarsPadding()
                ) {
                    WoofApp()
                }
            }
        }
    }
}

/**
 * Composable that displays an app bar and a list of dogs.
 */
@Composable
fun WoofApp() {
    LazyColumn {
        items(dogs) {
            DogItem(dog = it)
        }
    }
}

/**
 * Composable that displays a list item containing a dog icon and their information.
 *
 * @param dog contains the data that populates the list item
 * @param modifier modifiers to set to this composable
 */
@Composable
fun DogItem(
    dog: Dog,
    modifier: Modifier = Modifier
) {

    Card() {
        Row(
            modifier = modifier
                .fillMaxWidth()
                .padding(dimensionResource(R.dimen.padding_small)),
        )
        {
            DogIcon(dog.imageResourceId)
            DogInformation(dog.name, dog.age)
        }
    }
}

/**
 * Composable that displays a photo of a dog.
 *
 * @param dogIcon is the resource ID for the image of the dog
 * @param modifier modifiers to set to this composable
 */
@Composable
fun DogIcon(
    @DrawableRes dogIcon: Int,
    modifier: Modifier = Modifier
) {
    Image(
        modifier = modifier
            .size(dimensionResource(R.dimen.image_size))
            .padding(dimensionResource(R.dimen.padding_small)),
        painter = painterResource(dogIcon),

        // Content Description is not needed here - image is decorative, and setting a null content
        // description allows accessibility services to skip this element during navigation.

        contentDescription = null
    )
}

/**
 * Composable that displays a dog's name and age.
 *
 * @param dogName is the resource ID for the string of the dog's name
 * @param dogAge is the Int that represents the dog's age
 * @param modifier modifiers to set to this composable
 */
@Composable
fun DogInformation(
    @StringRes dogName: Int,
    dogAge: Int,
    modifier: Modifier = Modifier
) {
    Column(modifier = modifier) {
        Text(
            text = stringResource(dogName),
            modifier = Modifier.padding(top = dimensionResource(R.dimen.padding_small))
        )
        Text(
            text = stringResource(R.string.years_old, dogAge),
        )
    }
}

/**
 * Composable that displays what the UI of the app looks like in light theme in the design tab.
 */
@Preview
@Composable
fun WoofPreview() {
    WoofTheme {
        WoofApp()
    }
}

I tried to change value for dynamicColor to true, restart Android studio, inavalidate cache, rebuild project but it didn't help.

Update: I tried to add button and button took color from custom theme.

kotlin android-jetpack-compose