Jetpack Compose can't import Text or setContent anymore

Question

I've been messing around with Jetpack Compose recently and I had gone through the basic tutorial here. Then I started looking at the Jetnewssample project they have. Now I'm ready to start working on my own project but now when I create a new project in the same parent directory as the Jetnewssample project, (which is working fine) Android Studio can no longer import androidx.ui.core.Text or androidx.ui.core.setContent. I can import other classes from the same location but now I just get an unresolved reference error. This is a new project set to start with an Empty Compose Activity. Here is the code:

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.compose.Composable
import androidx.ui.core.Text
import androidx.ui.core.setContent
import androidx.ui.material.MaterialTheme
import androidx.ui.tooling.preview.Preview

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MaterialTheme {
                Greeting("Android")
            }
        }
    }
}

@Composable
fun Greeting(name: String) {
    Text(text = "Hello $name!")
}

@Preview
@Composable
fun DefaultPreview() {
    MaterialTheme {
        Greeting("Android")
    }
}

Here's the module's gradle build file:

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.2"

    defaultConfig {
        applicationId "com.franklin.sanctified"
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility = 1.8
        targetCompatibility = 1.8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
    buildFeatures {
        compose true
    }

}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.core:core-ktx:1.1.0'
    implementation 'androidx.ui:ui-layout:0.1.0-dev03'
    implementation 'androidx.ui:ui-material:0.1.0-dev03'
    implementation 'androidx.ui:ui-tooling:0.1.0-dev03'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

Answer 1

Update on :May-2021

Add below dependencies in app level Gradle or kts file for set content{ .. }

implementation("androidx.activity:activity-compose:1.3.0-alpha07")

Answer 2

Those seem to be in ui-framework for dev03. Try adding that dependency to your lineup:

implementation "androidx.ui:ui-framework:0.1.0-dev03"