Little code solidity

lib/src/screen_util.dart

@@ -25,25 +25,7 @@ class ScreenUtil {
 
   ScreenUtil._();
 
-  factory ScreenUtil() {
-    return _instance;
-  }
-
-  factory ScreenUtil.init(
-    BuildContext context, {
-    Size designSize = defaultSize,
-    bool splitScreenMode = false,
-    bool minTextAdapt = false,
-  }) {
-    configure(
-      data: MediaQuery.maybeOf(context),
-      designSize: designSize,
-      minTextAdapt: minTextAdapt,
-      splitScreenMode: splitScreenMode,
-    );
-
-    return _instance;
-  }
+  factory ScreenUtil() => _instance;
 
   /// Manually wait for window size to be initialized
   ///
@@ -79,7 +61,7 @@ class ScreenUtil {
         window = binding.platformDispatcher.implicitView;
       }
 
-      if (window == null || window!.physicalGeometry.isEmpty == true) {
+      if (window == null || window!.physicalGeometry.isEmpty) {
         return Future.delayed(duration, () => true);
       }
 
@@ -107,19 +89,32 @@ class ScreenUtil {
     }
   }
 
-  /// Initializing the library.
-  static void configure({
+  static Future<void> configure({
     MediaQueryData? data,
     Size? designSize,
     bool? splitScreenMode,
     bool? minTextAdapt,
-  }) {
-    if (data != null) _instance._data = data;
-
-    final deviceData = _instance._data.nonEmptySizeOrNull();
-    final deviceSize = deviceData?.size ?? designSize ?? _instance._uiSize;
+    bool? ensureScreenHasSize,
+  }) async {
+    if (ensureScreenHasSize ?? false) await ScreenUtil.ensureScreenSize();
+
+    try {
+      if (data != null)
+        _instance._data = data;
+      else
+        data = _instance._data;
+
+      if (designSize != null)
+        _instance._uiSize = designSize;
+      else
+        designSize = _instance._uiSize;
+    } catch (_) {
+      throw Exception(
+          'You must either use ScreenUtil.init or ScreenUtilInit first');
+    }
 
-    if (designSize != null) _instance._uiSize = designSize;
+    final MediaQueryData? deviceData = data.nonEmptySizeOrNull();
+    final Size deviceSize = deviceData?.size ?? designSize;
 
     final orientation = deviceData?.orientation ??
         (deviceSize.width > deviceSize.height
@@ -134,6 +129,23 @@ class ScreenUtil {
     _instance._elementsToRebuild?.forEach((el) => el.markNeedsBuild());
   }
 
+  /// Initializing the library.
+  static Future<void> init(
+    BuildContext context, {
+    Size designSize = defaultSize,
+    bool splitScreenMode = false,
+    bool minTextAdapt = false,
+    bool ensureScreenSize = false,
+  }) {
+    return configure(
+      data: MediaQuery.maybeOf(context),
+      designSize: designSize,
+      minTextAdapt: minTextAdapt,
+      splitScreenMode: splitScreenMode,
+      ensureScreenHasSize: ensureScreenSize,
+    );
+  }
+
   ///获取屏幕方向
   ///Get screen orientation
   Orientation get orientation => _orientation;
@@ -166,7 +178,7 @@ class ScreenUtil {
   /// The ratio of actual width to UI design
   double get scaleWidth => screenWidth / _uiSize.width;
 
-  ///  /// The ratio of actual height to UI design
+  /// The ratio of actual height to UI design
   double get scaleHeight =>
       (_splitScreenMode ? max(screenHeight, 700) : screenHeight) /
       _uiSize.height;

lib/src/screenutil_init.dart

@@ -50,6 +50,7 @@ class ScreenUtilInit extends StatefulWidget {
     this.splitScreenMode = false,
     this.minTextAdapt = false,
     this.useInheritedMediaQuery = false,
+    this.ensureScreenSize,
     this.responsiveWidgets,
   }) : super(key: key);
 
@@ -58,6 +59,7 @@ class ScreenUtilInit extends StatefulWidget {
   final bool splitScreenMode;
   final bool minTextAdapt;
   final bool useInheritedMediaQuery;
+  final bool? ensureScreenSize;
   final RebuildFactor rebuildFactor;
 
   /// The [Size] of the device in the design draft, in dp
@@ -143,6 +145,7 @@ class _ScreenUtilInitState extends State<ScreenUtilInit>
       designSize: widget.designSize,
       splitScreenMode: widget.splitScreenMode,
       minTextAdapt: widget.minTextAdapt,
+      ensureScreenHasSize: widget.ensureScreenSize,
     );
 
     return widget.builder?.call(context, widget.child) ?? widget.child!;