Gemini优化图片滚动缓存问题「待验证」见ImageListScreen.kt中的ImageListScreen视图

app/src/main/java/com/aiosman/riderpro/ImageListScreen.kt

@@ -0,0 +1,67 @@
+import android.content.Context
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.unit.dp
+import coil.compose.rememberAsyncImagePainter
+import coil.request.ImageRequest
+import coil.ImageLoader
+import coil.disk.DiskCache
+import coil.memory.MemoryCache
+
+data class ImageItem(val url: String)
+
+@Composable
+fun ImageListScreen(context: Context, imageList: List<ImageItem>) {
+    val imageLoader = getImageLoader(context)
+
+    LazyColumn(
+        modifier = Modifier.fillMaxSize(),
+        contentPadding = PaddingValues(16.dp)
+    ) {
+        items(imageList) { item ->
+            ImageItem(item, imageLoader, context) // 传递 context 参数
+        }
+    }
+}
+
+@Composable
+fun ImageItem(item: ImageItem, imageLoader: ImageLoader, context: Context) { // 接收 context 参数
+    val painter = rememberAsyncImagePainter(
+        model = ImageRequest.Builder(context) // 使用 context 参数
+            .data(item.url)
+            .crossfade(true)
+            .build(),
+        imageLoader = imageLoader
+    )
+
+    Image(
+        painter = painter,
+        contentDescription = null,
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(200.dp),
+        contentScale = ContentScale.Crop
+    )
+    Spacer(modifier = Modifier.height(16.dp))
+}
+
+fun getImageLoader(context: Context): ImageLoader {
+    return ImageLoader.Builder(context)
+        .memoryCache {
+            MemoryCache.Builder(context)
+                .maxSizePercent(0.25) // 设置内存缓存大小为可用内存的 25%
+                .build()
+        }
+        .diskCache {
+            DiskCache.Builder()
+                .directory(context.cacheDir.resolve("image_cache"))
+                .maxSizePercent(0.02) // 设置磁盘缓存大小为可用存储空间的 2%
+                .build()
+        }
+        .build()
+}

app/src/main/java/com/aiosman/riderpro/ui/login/login.kt

@@ -24,6 +24,8 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.navigation.NavOptions
+import androidx.navigation.navOptions
 import com.aiosman.riderpro.LocalNavController
 import com.aiosman.riderpro.R
 import com.aiosman.riderpro.ui.NavigationRoute
@@ -83,7 +85,12 @@ fun LoginPage() {
                         text = "Login in".uppercase(),
                         backgroundImage = R.mipmap.rider_pro_grey_bg_big
                     ) {
-                        navController.navigate(NavigationRoute.UserAuth.route)
+                        navController.navigate(
+                            NavigationRoute.UserAuth.route,
+                            navOptions {
+                                popUpTo(navController.currentDestination?.id ?: 0) { inclusive = true }
+                            }
+                        )
                     }
                     ActionButton(
                         modifier = Modifier
@@ -92,7 +99,12 @@ fun LoginPage() {
                         text = "Sign In".uppercase(),
                         backgroundImage = R.mipmap.rider_pro_red_bg_big
                     ){
-                        navController.navigate(NavigationRoute.SignUp.route)
+                        navController.navigate(
+                            NavigationRoute.SignUp.route,
+                            navOptions {
+                                popUpTo(navController.currentDestination?.id ?: 0) { inclusive = true }
+                            }
+                        )
                     }
                 }
             }