ui/theme/Theme.kt

private val LightThemeColors = lightColors(
    primary = Red700,
    primaryVariant = Red900,
    onPrimary = Color.White,
    secondary = Red700,
    secondaryVariant = Red900,
    onSecondary = Color.White,
    error = Red800,
    onBackground = Color.Black,

)

private val DarkThemeColors = darkColors(
    primary = Red300,
    primaryVariant = Red700,
    onPrimary = Color.Black,
    secondary = Red300,
    onSecondary = Color.Black,
    error = Red200,
    onBackground = Color.White
)

@Composable
fun JetnewsTheme(
    darkTheme: Boolean = isSystemInDarkTheme(),
    content: @Composable () -> Unit
) {
    MaterialTheme(
        colors = if (darkTheme) DarkThemeColors else LightThemeColors,
        typography = JetnewsTypography,
        shapes = JetnewsShapes,
        content = content
    )
}

主题需要的资源和定义

ui/theme/Color.kt 颜色管理

val Red200 = Color(0xfff297a2)
val Red300 = Color(0xffea6d7e)
val Red700 = Color(0xffdd0d3c)
val Red800 = Color(0xffd00036)
val Red900 = Color(0xffc20029)

ui/theme/Shape.kt 创建项目一般会有一个这个文件

val Shapes = Shapes(
    small = RoundedCornerShape(4.dp),
    medium = RoundedCornerShape(4.dp),
    large = RoundedCornerShape(8.dp)
)

ui/theme/Type.kt 字体相关管理 字体声明和全局定义

// 声明字体
private val Montserrat = FontFamily(
    Font(R.font.montserrat_regular),
    Font(R.font.montserrat_medium, FontWeight.W500),
    Font(R.font.montserrat_semibold, FontWeight.W600)
)

private val Domine = FontFamily(
    Font(R.font.domine_regular),
    Font(R.font.domine_bold, FontWeight.Bold)
)


val JetnewsTypography = Typography(
    defaultFontFamily = Montserrat,
    h4 = TextStyle(
        fontWeight = FontWeight.SemiBold,
        fontSize = 30.sp,
        letterSpacing = 0.sp
    ),
    h5 = TextStyle(
        fontWeight = FontWeight.SemiBold,
        fontSize = 24.sp,
        letterSpacing = 0.sp
    ),
    h6 = TextStyle(
        fontWeight = FontWeight.SemiBold,
        fontSize = 20.sp,
        letterSpacing = 0.sp
    ),
    subtitle1 = TextStyle(
        fontWeight = FontWeight.SemiBold,
        fontSize = 16.sp,
        letterSpacing = 0.15.sp
    ),
    subtitle2 = TextStyle(
        fontWeight = FontWeight.Medium,
        fontSize = 14.sp,
        letterSpacing = 0.1.sp
    ),
    body1 = TextStyle(
        fontFamily = Domine,
        fontWeight = FontWeight.Normal,
        fontSize = 16.sp,
        letterSpacing = 0.5.sp
    ),
    body2 = TextStyle(
        fontWeight = FontWeight.Medium,
        fontSize = 14.sp,
        letterSpacing = 0.25.sp
    ),
    button = TextStyle(
        fontWeight = FontWeight.SemiBold,
        fontSize = 14.sp,
        letterSpacing = 1.25.sp
    ),
    caption = TextStyle(
        fontWeight = FontWeight.Medium,
        fontSize = 12.sp,
        letterSpacing = 0.4.sp
    ),
    overline = TextStyle(
        fontWeight = FontWeight.SemiBold,
        fontSize = 12.sp,
        letterSpacing = 1.sp
    )
)