V1.0.0（3）添加网络重新连接按钮，版本代码加一

app/build.gradle.kts

@@ -14,7 +14,7 @@ android {
         applicationId = "com.live.dynamicwallpaper"
         minSdk = 23
         targetSdk = 34
-        versionCode = 2
+        versionCode = 3
         versionName = "1.0.0"
         setProperty(
             "archivesBaseName",

app/src/main/java/com/live/dynamicwallpaper/ui/activity/DynamicActivity.java

@@ -65,6 +65,12 @@ public class DynamicActivity extends AppCompatActivity {
         viewModel = new ViewModelProvider(this).get(DynamicViewModel.class);
         String format = contentData.getWallpaperType() == 2 ? "ViewShiftLive" : "ViewLive";
 
+        downloadVideo(resourceId, imagePath, format);
+
+        observeFavoriteState();
+    }
+
+    private void downloadVideo(int resourceId, String imagePath, String format) {
         if (contentData.getWallpaperPath().isEmpty()) {
             mediaFetcher.fetchVideoFile(this, resourceId, imagePath, format, new OnDownloadCallback() {
                 @Override
@@ -74,13 +80,14 @@ public class DynamicActivity extends AppCompatActivity {
                     viewModel.update(contentData);
                     prepareVideoPlayback();
                     hideLoading();
+                    hideRetry();
                 }
 
                 @Override
                 public void onFailure(Exception e) {
                     if (ui == null) return;
                     hideLoading();
-                    Toast.makeText(DynamicActivity.this, "Download error", Toast.LENGTH_SHORT).show();
+                    showRetry();
                     Log.e("LivePreview", "Media fetch failed", e);
                 }
 
@@ -95,9 +102,25 @@ public class DynamicActivity extends AppCompatActivity {
         } else {
             prepareVideoPlayback();
             hideLoading();
+            hideRetry();
         }
+    }
 
-        observeFavoriteState();
+    private void showRetry() {
+        if (ui == null) return;
+        ui.errorContainer.setVisibility(View.VISIBLE);
+        ui.retryButton.setOnClickListener(v -> {
+            ui.errorContainer.setVisibility(View.GONE);
+            showLoading();
+            downloadVideo(contentData.getFlowId(), contentData.getImage(),
+                    contentData.getWallpaperType() == 2 ? "ViewShiftLive" : "ViewLive");
+        });
+    }
+
+    private void hideRetry() {
+        if (ui != null) {
+            ui.errorContainer.setVisibility(View.GONE);
+        }
     }
 
     private void bindListeners() {

app/src/main/res/layout/activity_dynamic.xml

@@ -123,4 +123,35 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <LinearLayout
+        android:id="@+id/error_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:gravity="center"
+        android:visibility="gone"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        android:layout_centerInParent="true">
+        <TextView
+            android:id="@+id/error_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:gravity="center"
+            android:text="Download failed. \nPlease check the network and try again."
+            android:textColor="#FF0000"
+            android:textSize="16sp"
+            android:layout_marginBottom="16dp"/>
+        <Button
+            android:id="@+id/retry_button"
+            android:layout_marginTop="8dp"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:backgroundTint="#FF0000"
+            android:text="Retry"/>
+    </LinearLayout>
+
 </androidx.constraintlayout.widget.ConstraintLayout>