优化

app/src/main/java/com/sw/dualscreen/activity/SettingActivity.kt

@@ -1,5 +1,6 @@
 package com.sw.dualscreen.activity
 
+import androidx.activity.OnBackPressedCallback
 import androidx.activity.viewModels
 import androidx.fragment.app.Fragment
 import com.sw.dualscreen.R
@@ -7,8 +8,10 @@ import com.sw.dualscreen.activity.fragment.BusinessFragment
 import com.sw.dualscreen.activity.fragment.CollectFragment
 import com.sw.dualscreen.databinding.ActivitySettingBinding
 import com.sw.dualscreen.model.response.FoodInfo
+import com.sw.dualscreen.model.response.ClickBackEvent
 import com.sw.dualscreen.viewmodel.BaseViewModel
 import com.sw.dualscreen.viewmodel.UserViewModel
+import org.greenrobot.eventbus.EventBus
 
 class SettingActivity : BaseActivity<ActivitySettingBinding>() {
 
@@ -28,10 +31,12 @@ class SettingActivity : BaseActivity<ActivitySettingBinding>() {
 
     override fun initialize() {
         super.initialize()
+        initBackDispatcher()
         binding.include.let {
             it.ivPageBack.setOnClickListener {
 //                val intent = Intent(this, MainActivity::class.java)
 //                startActivity(intent)
+                EventBus.getDefault().post(ClickBackEvent())
                 finish()
             }
             it.tvPageTitle.text = "设置"
@@ -65,4 +70,17 @@ class SettingActivity : BaseActivity<ActivitySettingBinding>() {
         viewModel.searchByFoodName(foodName, action)
     }
 
+    private lateinit var backPressedCallback: OnBackPressedCallback
+    private fun initBackDispatcher() {
+        // 创建回调，true表示初始启用状态
+        backPressedCallback = object : OnBackPressedCallback(true) {
+            override fun handleOnBackPressed() {
+                EventBus.getDefault().post(ClickBackEvent())
+            }
+        }
+        // 注册回调，使用lifecycleOwner确保生命周期安全
+        onBackPressedDispatcher.addCallback(this, backPressedCallback)
+    }
+
+
 }