[完成翻译] src/release/breaking-changes/splash-screen-migration.md (#1342)

src/release/breaking-changes/splash-screen-migration.md

@@ -1,6 +1,8 @@
 ---
 title: Deprecated Splash Screen API Migration
+title: 从已弃用的闪屏页 API 迁移
 description: How to migrate from Manifest/Activity defined splash screen.
+description: 如何将 Manifest/Activity 定义的闪屏页进行迁移。
 ---
 
 Prior to Flutter 2.5, Flutter apps could add a splash
@@ -12,18 +14,34 @@ drawn the first frame. This approach is now deprecated as of Flutter 2.5.
 Flutter now automatically keeps the Android launch screen displayed
 until it draws the first frame.
 
+在 Flutter 2.5 版本之前，Flutter 应用程序可以通过定义 manifest 文件 (`AndroidManifest.xml`) 
+中的元数据，或在其 [`FlutterActivity`][] 中实现 [`provideSplashScreen`][]，
+再或者两者兼顾使用，来添加闪屏页。
+闪屏页会在 Android 启动页显示后，Flutter 首帧绘制前短暂显示。
+从 Flutter 2.5 版本起，这种方式已被弃用。
+Flutter 现在会自动保持显示 Android 启动页，直至首帧绘制。
+
 To migrate from defining a custom splash screen to just defining a custom
 launch screen for your application, follow the steps that correspond
 to how your application's custom splash screen was defined
 prior to the 2.5 release.
 
+请按照 Flutter 2.5 版本之前自定义应用程序闪屏页相应的操作步骤，
+将自定义的闪屏页迁移到只用自定义应用程序的启动页。
+
 **Custom splash screen defined in [`FlutterActivity`][]**
 
+**在 [`FlutterActivity`][] 中自定义闪屏页**
+
 1. Locate your application's implementation of `provideSplashScreen()`
    within its `FlutterActivity` and **delete it**. This implementation should involve
    the construction of your application's custom splash screen
    as a `Drawable`. For example:
 
+   在应用程序的 `FlutterActivity` 中找到 `provideSplashScreen()` 方法的实现并 **将其删除**。
+   该方法应该包括了将应用程序的自定义闪屏页构建成一个 `Drawable` 的实现。
+   例如：
+
    ```java
    @Override
    public SplashScreen provideSplashScreen() {
@@ -38,8 +56,14 @@ prior to the 2.5 release.
    `Drawable` splash screen (`R.some_splash_screen` in the previous example)
    is properly configured as your application's custom launch screen.
 
+   请按照接下来章节中的步骤，确保你的 `Drawable` 闪屏页
+   （上个步骤示例中的 `R.some_splash_screen`）
+   已正确配置为应用程序的自定义启动页。
+
 **Custom splash screen defined in Manifest**
 
+**在 Manifest 中自定义闪屏页**
+
 1. Locate your application's `AndroidManifest.xml` file.
    Within this file, find the `activity` element.
    Within this element, identify the `android:theme` attribute
@@ -48,6 +72,12 @@ prior to the 2.5 release.
    `io.flutter.embedding.android.SplashScreenDrawable`,
    and update it. For example:
 
+   在应用程序的 `AndroidManifest.xml` 文件中找到 `activity` 元素。
+   在此元素中，找到 `android:theme` 属性以及
+   定义闪屏页为 `io.flutter.embedding.android.SplashScreenDrawable` 
+   的 `meta-data` 元素，以便在后续的步骤中进行更新。
+   例如：
+
    ```xml
    <activity
        // ...
@@ -63,14 +93,25 @@ prior to the 2.5 release.
 2. If the `android:theme` attribute isn't specified, add the attribute and
    [define a launch theme][] for your application's launch screen.
 
+   如果未指定 `android:theme` 属性，请添加该属性
+   并为应用程序的启动页 [定义启动主题][define a launch theme]
+
 3. Delete the `meta-data` element, as Flutter no longer
    uses that, but it can cause a crash.
 
+   删除 `meta-data` 元素，因为 Flutter 不再使用该元素，
+   如果保留它可能会导致崩溃。
+
 4. Locate the definition of the theme specified by the `android:theme` attribute
    within your application's `style` resources. This theme specifies the
    launch theme of your application. Ensure that the `style` attribute configures the
    `android:windowBackground` attribute with your custom splash screen. For example:
 
+   在应用程序的 `style` 资源中找到由 `android:theme` 属性指定的主题。
+   该主题指定了应用程序的启动主题。
+   请确保 `style` 将 `android:windowBackground` 属性配置为你的自定义闪屏页。
+   例如：
+
    ```xml
    <resources>
        <style