diff --git a/app/src/main/java/com/videoapp/tv/SettingsActivity.kt b/app/src/main/java/com/videoapp/tv/SettingsActivity.kt
index ac078f9..2a09dce 100644
--- a/app/src/main/java/com/videoapp/tv/SettingsActivity.kt
+++ b/app/src/main/java/com/videoapp/tv/SettingsActivity.kt
@@ -11,7 +11,8 @@ import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import com.videoapp.tv.data.ConfigRepository
 import com.videoapp.tv.data.SiteConfig
-import com.videoapp.tv.data.SitePreset
+import com.videoapp.tv.engine.SourceHandler
+import com.videoapp.tv.engine.SourceRegistry
 
 class SettingsActivity : AppCompatActivity() {
 
@@ -53,44 +54,40 @@ class SettingsActivity : AppCompatActivity() {
         btnSave = findViewById(R.id.btn_save)
         btnRestore = findViewById(R.id.btn_restore)
 
-        setupPresetSpinner()
+        setupSourceSpinner()
         loadConfig()
 
         btnSave.setOnClickListener { saveConfig() }
         btnRestore.setOnClickListener {
             configRepo.restoreDefault()
-            ignoringSpinner = true
-            spinnerPreset.setSelection(0)
-            ignoringSpinner = false
             loadConfig()
             Toast.makeText(this, R.string.config_restored, Toast.LENGTH_SHORT).show()
         }
     }
 
-    private fun setupPresetSpinner() {
-        val presets = configRepo.getPresets()
-        val presetNames = presets.map { it.name }
+    private fun setupSourceSpinner() {
+        val handlers = SourceRegistry.getAll()
+        val names = handlers.map { it.displayName }
         val adapter = ArrayAdapter(
             this,
             android.R.layout.simple_spinner_item,
-            presetNames
+            names
         )
         adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
         spinnerPreset.adapter = adapter
 
+        val currentId = configRepo.getCurrentSourceId()
+        val currentIndex = handlers.indexOfFirst { it.id == currentId }
+        if (currentIndex >= 0) {
+            spinnerPreset.setSelection(currentIndex)
+        }
+
         spinnerPreset.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
             override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
                 if (ignoringSpinner) return
-                val preset = presets.getOrNull(position) ?: return
-                configRepo.applyPreset(preset)
-                loadConfigFromPreset(preset.config)
-                Toast.makeText(
-                    this@SettingsActivity,
-                    "已切换到 ${preset.name}",
-                    Toast.LENGTH_SHORT
-                ).show()
+                val handler = handlers[position]
+                configRepo.setCurrentSourceId(handler.id)
             }
-
             override fun onNothingSelected(parent: AdapterView<*>?) {}
         }
     }
@@ -115,10 +112,9 @@ class SettingsActivity : AppCompatActivity() {
         val config = configRepo.getConfig()
         loadConfigFromPreset(config)
 
-        val presets = configRepo.getPresets()
-        val matchedIndex = presets.indexOfFirst {
-            it.config.baseUrl == config.baseUrl
-        }
+        val handlers = SourceRegistry.getAll()
+        val currentId = configRepo.getCurrentSourceId()
+        val matchedIndex = handlers.indexOfFirst { it.id == currentId }
         if (matchedIndex >= 0) {
             ignoringSpinner = true
             spinnerPreset.setSelection(matchedIndex)