feat(activity): 新增 SingleFragmentActivity 通用 Fragment 容器页

app/src/main/AndroidManifest.xml

@@ -106,6 +106,10 @@
             android:theme="@style/Theme.DishMatch.NoSplash"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
+        <activity
+            android:name="com.shuwei.dish.match.ui.SingleFragmentActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
+            tools:ignore="DiscouragedApi,LockedOrientationActivity" />
         <activity
             android:name="com.shuwei.dish.match.ui.FoodRecognizeActivity"
             android:theme="@style/Theme.DishMatch.NoSplash"

app/src/main/java/com/shuwei/dish/match/base/BaseActivity.kt

@@ -126,6 +126,9 @@ open class BaseActivity : AppCompatActivity() {
         )
     }
 
+    /** 返回 Fragment 容器的 View ID，供子类加载 Fragment 使用 */
+    protected fun getFragmentContainerId(): Int = R.id.flContainer
+
     override fun setContentView(view: View?) {
         if (view == binding.root) {
             super.setContentView(view)

app/src/main/java/com/shuwei/dish/match/ui/SingleFragmentActivity.kt

@@ -0,0 +1,96 @@
+package com.shuwei.dish.match.ui
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import com.shuwei.dish.match.base.BaseActivity
+import com.shuwei.dish.match.ui.fragment.CollectFragment
+import com.shuwei.dish.match.ui.fragment.DeviceConfigFragment
+import com.shuwei.dish.match.ui.fragment.SeasoningConfigFragment
+import com.shuwei.dish.match.utils.ext.gone
+import com.shuwei.dish.match.utils.ext.visible
+
+/**
+ * 通用单 Fragment 容器 Activity
+ * 通过 [PageType] 决定加载哪个 Fragment，避免为每个配置/功能页面单独创建 Activity
+ */
+class SingleFragmentActivity : BaseActivity() {
+
+    /**
+     * 支持的页面类型枚举
+     * 新增页面时在此追加枚举值，并在 [createFragment] 中补充对应分支
+     */
+    enum class PageType {
+        /** 菜品采集页 */
+        COLLECT,
+        /** 设备配置页 */
+        DEVICE_CONFIG,
+        /** 调料配置页 */
+        SEASONING_CONFIG,
+    }
+
+    companion object {
+        private const val EXTRA_PAGE_TYPE = "extra_page_type"
+
+        /**
+         * 启动 SingleFragmentActivity
+         * @param context 调用方 Context
+         * @param pageType 要显示的页面类型
+         */
+        fun start(context: Context, pageType: PageType) {
+            Intent(context, SingleFragmentActivity::class.java).apply {
+                putExtra(EXTRA_PAGE_TYPE, pageType.name)
+                context.startActivity(this)
+            }
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setHeaderBackground()
+
+        // 解析页面类型，非法值直接关闭
+        val typeName = intent.getStringExtra(EXTRA_PAGE_TYPE)
+        val pageType = typeName?.let {
+            runCatching { PageType.valueOf(it) }.getOrNull()
+        }
+        if (pageType == null) {
+            finish()
+            return
+        }
+
+        // 配置标题栏
+        setTitleBar(
+            titleBarAction = { it.visible() },
+            titleAction = { it.text = getTitleForPage(pageType) },
+            rightIconActon = { it.gone() }
+        )
+
+        // 首次创建时加载 Fragment，避免屏幕旋转重复添加
+        if (savedInstanceState == null) {
+            val fragment = createFragment(pageType)
+            supportFragmentManager.beginTransaction()
+                .replace(getFragmentContainerId(), fragment)
+                .commit()
+        }
+    }
+
+    /**
+     * 根据页面类型返回对应标题文本
+     */
+    private fun getTitleForPage(pageType: PageType): String = when (pageType) {
+        PageType.COLLECT -> "菜品采集"
+        PageType.DEVICE_CONFIG -> "设备配置"
+        PageType.SEASONING_CONFIG -> "调料配置"
+    }
+
+    /**
+     * 根据页面类型创建对应 Fragment 实例
+     */
+    private fun createFragment(pageType: PageType): Fragment = when (pageType) {
+        PageType.COLLECT -> CollectFragment()
+        PageType.DEVICE_CONFIG -> DeviceConfigFragment()
+        PageType.SEASONING_CONFIG -> SeasoningConfigFragment()
+    }
+}