Jetpack compose initial project

app/build.gradle.kts

@@ -30,23 +30,31 @@ android {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.4.7"
+    }
     kotlinOptions {
         jvmTarget = "17"
     }
-    buildFeatures {
-        viewBinding = true
-    }
 }
 
 dependencies {
 
     implementation("androidx.core:core-ktx:1.10.1")
-    implementation("androidx.appcompat:appcompat:1.6.1")
-    implementation("com.google.android.material:material:1.9.0")
-    implementation("androidx.constraintlayout:constraintlayout:2.1.4")
-    implementation("androidx.navigation:navigation-fragment-ktx:2.7.1")
-    implementation("androidx.navigation:navigation-ui-ktx:2.7.1")
+    implementation("androidx.activity:activity-compose:1.7.2")
+    implementation("androidx.compose.ui:ui")
+    implementation("androidx.compose.ui:ui-graphics")
+    implementation("androidx.compose.ui:ui-tooling-preview")
+    implementation("androidx.compose.material3:material3:1.1.1")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+    androidTestImplementation("androidx.compose.ui:ui-test-junit4")
+    debugImplementation("androidx.compose.ui:ui-tooling")
+    debugImplementation("androidx.compose.ui:ui-test-manifest")
+    implementation("com.google.zxing:core:3.4.1")
+    implementation("com.journeyapps:zxing-android-embedded:4.3.0")
 }

app/src/main/AndroidManifest.xml

@@ -10,13 +10,13 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.XML_AND_JETPACKCOMPOSE_INTEROPERABILITY"
+
+        android:theme="@style/Theme.Xml_And_Jetpack_Interoperability"
         tools:targetApi="31">
         <activity
             android:name=".MainActivity"
             android:exported="true"
-            android:label="@string/app_name"
-            android:theme="@style/Theme.XML_AND_JETPACKCOMPOSE_INTEROPERABILITY">
+            android:theme="@style/Theme.Xml_And_Jetpack_Interoperability">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/kaushalvasava/apps/xml_and_jetpackcompose_interoperability/MainActivity.kt

@@ -1,32 +1,42 @@
 package com.kaushalvasava.apps.xml_and_jetpackcompose_interoperability
 
 import android.os.Bundle
-import androidx.appcompat.app.AppCompatActivity
-import androidx.navigation.NavController
-import androidx.navigation.fragment.NavHostFragment
-import androidx.navigation.ui.setupActionBarWithNavController
-import com.kaushalvasava.apps.xml_and_jetpackcompose_interoperability.databinding.ActivityMainBinding
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.fillMaxSize
+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.kaushalvasava.apps.xml_and_jetpackcompose_interoperability.ui.theme.ComposeAppTheme
 
-class MainActivity : AppCompatActivity() {
+class MainActivity : ComponentActivity() {
 
-    private lateinit var binding: ActivityMainBinding
-    private lateinit var navController: NavController
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-
-        binding = ActivityMainBinding.inflate(layoutInflater)
-        setContentView(binding.root)
-
-        setSupportActionBar(binding.toolbar)
-
-        val navHostFragment =
-            supportFragmentManager.findFragmentById(R.id.nav_host_fragment_content_main) as NavHostFragment
-        navController = navHostFragment.navController
-        setupActionBarWithNavController(navController)
+        setContent {
+            ComposeAppTheme {
+                // A surface container using the 'background' color from the theme
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background
+                ) {
+                    Greeting()
+                }
+            }
+        }
     }
+}
 
-    override fun onSupportNavigateUp(): Boolean {
-        return navController.navigateUp()
-                || super.onSupportNavigateUp()
-    }
+@Composable
+fun Greeting() {
+    Text("Hello Compose ")
+}
+
+@Preview
+@Composable
+fun GreetingPreview() {
+    Greeting()
 }

app/src/main/java/com/kaushalvasava/apps/xml_and_jetpackcompose_interoperability/ui/theme/Color.kt

@@ -0,0 +1,11 @@
+package com.kaushalvasava.apps.xml_and_jetpackcompose_interoperability.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650a4)
+val PurpleGrey40 = Color(0xFF625b71)
+val Pink40 = Color(0xFF7D5260)

app/src/main/java/com/kaushalvasava/apps/xml_and_jetpackcompose_interoperability/ui/theme/Theme.kt

@@ -0,0 +1,70 @@
+package com.kaushalvasava.apps.xml_and_jetpackcompose_interoperability.ui.theme
+
+import android.app.Activity
+import android.os.Build
+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.toArgb
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalView
+import androidx.core.view.WindowCompat
+
+private val DarkColorScheme = darkColorScheme(
+    primary = Purple80,
+    secondary = PurpleGrey80,
+    tertiary = Pink80
+)
+
+private val LightColorScheme = lightColorScheme(
+    primary = Purple40,
+    secondary = PurpleGrey40,
+    tertiary = Pink40
+
+    /* Other default colors to override
+    background = Color(0xFFFFFBFE),
+    surface = Color(0xFFFFFBFE),
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onTertiary = Color.White,
+    onBackground = Color(0xFF1C1B1F),
+    onSurface = Color(0xFF1C1B1F),
+    */
+)
+
+@Composable
+fun ComposeAppTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    // Dynamic color is available on Android 12+
+    dynamicColor: Boolean = true,
+    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 -> DarkColorScheme
+        else -> LightColorScheme
+    }
+    val view = LocalView.current
+    if (!view.isInEditMode) {
+        SideEffect {
+            val window = (view.context as Activity).window
+            window.statusBarColor = colorScheme.primary.toArgb()
+            WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = darkTheme
+        }
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content
+    )
+}

app/src/main/java/com/kaushalvasava/apps/xml_and_jetpackcompose_interoperability/ui/theme/Type.kt

@@ -0,0 +1,34 @@
+package com.kaushalvasava.apps.xml_and_jetpackcompose_interoperability.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+    bodyLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 16.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.5.sp
+    )
+    /* Other default text styles to override
+    titleLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 11.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    )
+    */
+)