Why my Color theme defined in theme.kt isn't showing in my physical device (debugging)-CodePudding

I've defined my theme for the app to dynamic color (Material You). But whenever I run the app in my physical device, which supports Material You and it's turned on from settings, it don't follow the theme. All elements are in purple, even when changing the wallpaper. Futher more in Dark mode too it shows White Background and same purple.

In demo func I've a Filled Tonal Icon Botton & Dropdown Meny Item containg 5 Menu Items with 4-5 char long texts.

I'm using Android Studio Dolphine in Gruda Linux. Both Updated.

My dependancies & versions:

build.gradle (Project)

uildscript {
    ext {
        compose_version = '1.3.1'
    }
}// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
    id 'com.android.application' version '7.3.1' apply false
    id 'com.android.library' version '7.3.1' apply false
    id 'org.jetbrains.kotlin.android' version '1.6.10' apply false
}

build.gradle (Module)

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
}

android {
    namespace 'com.f.rateme'
    compileSdk 33

    defaultConfig {
        applicationId "com.f.rateme"
        minSdk 31
        targetSdk 33
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        vectorDrawables {
            useSupportLibrary true
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
    buildFeatures {
        compose true
    }
    composeOptions {
        kotlinCompilerExtensionVersion '1.1.1'
    }
    packagingOptions {
        resources {
            excludes  = '/META-INF/{AL2.0,LGPL2.1}'
        }
    }
}



dependencies {

    def nav_version = "2.5.3"

    implementation 'androidx.core:core-ktx:1.9.0'
    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
    implementation 'androidx.activity:activity-compose:1.6.1'
    implementation "androidx.compose.ui:ui:$compose_version"
    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
    implementation 'androidx.compose.material3:material3:1.0.1'
    implementation "androidx.compose.material:material-icons-extended:$compose_version"
    testImplementation 'junit:junit:4.13.2'
    implementation("androidx.navigation:navigation-compose:$nav_version")
    androidTestImplementation 'androidx.test.ext:junit:1.1.4'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.0'
    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"

}

My theme.kt in ui.theme

import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.material3.*
import androidx.compose.runtime.Composable
import androidx.compose.ui.platform.LocalContext



@Composable
fun AppTheme(
  useDarkTheme: Boolean = isSystemInDarkTheme(),
  content: @Composable() () -> Unit
) {

    val colors = if (useDarkTheme) dynamicDarkColorScheme(LocalContext.current)
                 else dynamicLightColorScheme(LocalContext.current)


    MaterialTheme(
    colorScheme = colors,
    typography = typography,
    content = content
    // shapes = shapes, TODO - Maybe shapes parameter required for Material3 theme?
  )
}

My MainActivity.kt

package com.<company_name>.<app_name>

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.*
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.rounded.Add
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview

import com.<company_name>.<app_name>.ui.theme.AppTheme



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

                    var paged = ""

                    paged = feed("Feed")

// PAGE VIEWS


// Feed View
@Composable
fun feed(page: String): String {

    var next = page

    var new_post by remember { mutableStateOf(false) }

    Row() {
        FilledTonalIconButton(
            onClick = { new_post = true },
            enabled = true
        ) {
            Icon(
                Icons.Rounded.Add,
                "Button for creating a new post"
            )
        }

        DropdownMenu(
            expanded = new_post,
            onDismissRequest = { new_post = false }
        ) {
            DropdownMenuItem(text = { Text("Text") }, onClick = { next = "New - Text" }, enabled = true, leadingIcon = { /*TODO*/ })

            DropdownMenuItem(text = { Text("Image") }, onClick = { next = "New - Image" }, enabled = true, leadingIcon = { /*TODO*/ })

            DropdownMenuItem(text = { Text("Video") }, onClick = { next = "New - Video" }, enabled = true, leadingIcon = { /*TODO*/ })

            DropdownMenuItem(text = { Text("Audio") }, onClick = { next = "New - Audio" }, enabled = true, leadingIcon = { /*TODO*/ })

            DropdownMenuItem(text = { Text("Other") }, onClick = { next = "New - Other" }, enabled = true, leadingIcon = { /*TODO*/ })
        }
    }

       return next

}

I'm using Material 3 with Material You in Jetpack compose and using icons from material (google fints)

Screenshots:

Material You is turned on:
In light Mode:

In dark mode

If you find any typo please update it or tell me to fix.

PS: This is my second time here posting and I have an almost zero experience on android development and Kotlin. I developed terminal apps and worked on ML kinda work in Python, C , C. So I may need more information in explanation. I started learning Android Development a week ago only.

You can ask me any more information.

And Sorry for very long post. I wanted to include everything to speed up.

Peace ✌