相册预览界面增加删除按钮和二次确认

app/src/main/java/com/inspection/camera/ui/gallery/GalleryScreen.kt

@@ -201,6 +201,8 @@ fun GalleryScreen(
 
     // 大图查看对话框（支持双指缩放）
     if (selectedImageUri != null) {
+        var showDeleteConfirm by remember { mutableStateOf(false) }
+
         AlertDialog(
             onDismissRequest = { selectedImageUri = null },
             title = {
@@ -210,10 +212,19 @@ fun GalleryScreen(
                     verticalAlignment = Alignment.CenterVertically
                 ) {
                     Text("图片预览")
+                    Row {
+                        IconButton(onClick = { showDeleteConfirm = true }) {
+                            Icon(
+                                Icons.Default.Delete,
+                                contentDescription = "删除",
+                                tint = Color.Red
+                            )
+                        }
                         IconButton(onClick = { selectedImageUri = null }) {
                             Icon(Icons.Default.Close, contentDescription = "关闭")
                         }
                     }
+                }
             },
             text = {
                 ZoomableImage(
@@ -229,6 +240,32 @@ fun GalleryScreen(
                 }
             }
         )
+
+        // 删除二次确认对话框
+        if (showDeleteConfirm) {
+            AlertDialog(
+                onDismissRequest = { showDeleteConfirm = false },
+                title = { Text("确认删除") },
+                text = { Text("确定要删除这张图片吗？删除后无法恢复。") },
+                confirmButton = {
+                    TextButton(onClick = {
+                        scope.launch {
+                            deleteImage(context, selectedImageUri!!)
+                            images = loadImagesFromGallery(context)
+                            selectedImageUri = null
+                            showDeleteConfirm = false
+                        }
+                    }) {
+                        Text("确定删除", color = Color.Red)
+                    }
+                },
+                dismissButton = {
+                    TextButton(onClick = { showDeleteConfirm = false }) {
+                        Text("取消")
+                    }
+                }
+            )
+        }
     }
 }