Refactor to Compose based UI

app/src/main/java/io/nekohasekai/sfa/LauncherActivity.kt

@@ -0,0 +1,40 @@
+package io.nekohasekai.sfa
+
+import android.app.Activity
+import android.content.Intent
+import android.os.Bundle
+import io.nekohasekai.sfa.compose.ComposeActivity
+import io.nekohasekai.sfa.database.Settings
+import io.nekohasekai.sfa.ui.MainActivity
+import kotlinx.coroutines.runBlocking
+
+class LauncherActivity : Activity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        val useComposeUI =
+            runBlocking {
+                Settings.useComposeUI
+            }
+
+        val targetActivity =
+            if (useComposeUI) {
+                ComposeActivity::class.java
+            } else {
+                MainActivity::class.java
+            }
+
+        val launchIntent =
+            Intent(this, targetActivity).apply {
+                // Transfer any intent data from launcher
+                intent?.let {
+                    action = it.action
+                    data = it.data
+                    it.extras?.let { extras -> putExtras(extras) }
+                }
+            }
+
+        startActivity(launchIntent)
+        finish()
+    }
+}