From 8a146754f2c1c95244cbe00dd9c6b9e582658f57 Mon Sep 17 00:00:00 2001
From: Amir Nasrollahzadeh <amiirnlz79@gmail.com>
Date: Mon, 7 Jul 2025 12:46:27 +0330
Subject: [PATCH] Feat: Add auto-save functionality on screen stop event

---
 .../opennote/presentation/screen/NoteScreen.kt | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/app/src/main/java/com/yangdai/opennote/presentation/screen/NoteScreen.kt b/app/src/main/java/com/yangdai/opennote/presentation/screen/NoteScreen.kt
index 98e9ba7..a8aba7a 100644
--- a/app/src/main/java/com/yangdai/opennote/presentation/screen/NoteScreen.kt
+++ b/app/src/main/java/com/yangdai/opennote/presentation/screen/NoteScreen.kt
@@ -102,6 +102,10 @@ import androidx.compose.ui.util.fastJoinToString
 import androidx.core.content.FileProvider
 import androidx.core.net.toUri
 import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.LifecycleOwner
+import androidx.lifecycle.compose.LocalLifecycleOwner
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.yangdai.opennote.MainActivity
 import com.yangdai.opennote.R
@@ -163,6 +167,8 @@ fun NoteScreen(
     val noteTextDetails by viewModel.textState.collectAsStateWithLifecycle()
     val dataAction by viewModel.dataActionStateFlow.collectAsStateWithLifecycle()
     val appSettings by viewModel.settingsStateFlow.collectAsStateWithLifecycle()
+    val lifecycleOwner: LifecycleOwner = LocalLifecycleOwner.current
+
 
     // 确保屏幕旋转等配置变更时，不会重复加载笔记
     var lastLoadedNoteId by rememberSaveable { mutableStateOf<Long?>(null) }
@@ -178,6 +184,18 @@ fun NoteScreen(
         }
     }
 
+    DisposableEffect(lifecycleOwner) {
+        val observer = LifecycleEventObserver { _, event ->
+            if (event == Lifecycle.Event.ON_STOP) {
+                viewModel.onNoteEvent(NoteEvent.SaveOrUpdate)
+            }
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+        onDispose {
+            lifecycleOwner.lifecycle.removeObserver(observer)
+        }
+    }
+
     val context = LocalContext.current
     val coroutineScope = rememberCoroutineScope()
     val pagerState = rememberPagerState(pageCount = { 2 })