Add ComposeListView hosting a Jetpack Compose LazyColumn

Author: colemancda

Demo/app/src/main/java/com/pureswift/swiftandroid/ComposeListView.kt

@@ -0,0 +1,48 @@
+package com.pureswift.swiftandroid
+
+import android.content.Context
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.material3.Text
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.key
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.ComposeView
+import androidx.compose.ui.unit.dp
+import com.pureswift.swiftandroid.ui.theme.SwiftAndroidTheme
+
+// SwiftUI `List` backed by a Jetpack Compose `LazyColumn`, sourcing its rows from a Swift-implemented `ListViewAdapter`.
+// `ComposeView` is final, so it's hosted as a child of this `FrameLayout` rather than subclassed.
+class ComposeListView(context: Context, private val adapter: ListViewAdapter) : FrameLayout(context) {
+
+    private var version by mutableIntStateOf(0)
+
+    init {
+        val composeView = ComposeView(context)
+        composeView.setContent {
+            SwiftAndroidTheme {
+                key(version) {
+                    LazyColumn {
+                        items(adapter.getCount()) { index ->
+                            Text(
+                                text = adapter.getItem(index) as String,
+                                modifier = Modifier.padding(16.dp)
+                            )
+                        }
+                    }
+                }
+            }
+        }
+        addView(composeView, ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT))
+    }
+
+    fun getAdapter(): ListViewAdapter = adapter
+
+    fun refresh() {
+        version++
+    }
+}