diff --git a/flutter3.27.2.patch b/flutter3.27.2.patch
new file mode 100644
index 0000000000..cbe27fde58
--- /dev/null
+++ b/flutter3.27.2.patch
@@ -0,0 +1,399 @@
+diff --git a/packages/flutter/lib/src/cupertino/dialog.dart b/packages/flutter/lib/src/cupertino/dialog.dart
+index 56c0749386..0ca9673558 100644
+--- a/packages/flutter/lib/src/cupertino/dialog.dart
++++ b/packages/flutter/lib/src/cupertino/dialog.dart
+@@ -31,7 +31,7 @@ import 'theme.dart';
+ // Apple Design Resources(https://developer.apple.com/design/resources/).
+ // However the values are not exactly the same as native, so eyeballing is needed.
+ const TextStyle _kCupertinoDialogTitleStyle = TextStyle(
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   inherit: false,
+   fontSize: 17.0,
+   fontWeight: FontWeight.w600,
+@@ -41,7 +41,7 @@ const TextStyle _kCupertinoDialogTitleStyle = TextStyle(
+ );
+ 
+ const TextStyle _kCupertinoDialogContentStyle = TextStyle(
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   inherit: false,
+   fontSize: 13.0,
+   fontWeight: FontWeight.w400,
+@@ -51,7 +51,7 @@ const TextStyle _kCupertinoDialogContentStyle = TextStyle(
+ );
+ 
+ const TextStyle _kCupertinoDialogActionStyle = TextStyle(
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   inherit: false,
+   fontSize: 16.8,
+   fontWeight: FontWeight.w400,
+@@ -61,7 +61,7 @@ const TextStyle _kCupertinoDialogActionStyle = TextStyle(
+ // CupertinoActionSheet-specific text styles.
+ const TextStyle _kActionSheetActionStyle = TextStyle(
+   // The fontSize and fontWeight may be adjusted when the text is rendered.
+-  fontFamily: 'CupertinoSystemDisplay',
++  fontFamily: 'PingFang SC',
+   inherit: false,
+   fontSize: 17.0,
+   fontWeight: FontWeight.w400,
+@@ -69,7 +69,7 @@ const TextStyle _kActionSheetActionStyle = TextStyle(
+ );
+ 
+ const TextStyle _kActionSheetContentStyle = TextStyle(
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   inherit: false,
+   fontSize: 13.0,
+   fontWeight: FontWeight.w400,
+diff --git a/packages/flutter/lib/src/cupertino/text_theme.dart b/packages/flutter/lib/src/cupertino/text_theme.dart
+index c8c7d3b2f3..fc53df7563 100644
+--- a/packages/flutter/lib/src/cupertino/text_theme.dart
++++ b/packages/flutter/lib/src/cupertino/text_theme.dart
+@@ -18,7 +18,7 @@ import 'colors.dart';
+ // Values derived from https://developer.apple.com/design/resources/.
+ const TextStyle _kDefaultTextStyle = TextStyle(
+   inherit: false,
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   fontSize: 17.0,
+   letterSpacing: -0.41,
+   color: CupertinoColors.label,
+@@ -33,7 +33,7 @@ const TextStyle _kDefaultTextStyle = TextStyle(
+ // See [iOS 17 + iPadOS 17 UI Kit](https://www.figma.com/community/file/1248375255495415511) for details.
+ const TextStyle _kDefaultActionTextStyle = TextStyle(
+   inherit: false,
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   fontSize: 17.0,
+   letterSpacing: -0.41,
+   color: CupertinoColors.activeBlue,
+@@ -48,7 +48,7 @@ const TextStyle _kDefaultActionTextStyle = TextStyle(
+ // See [iOS 17 + iPadOS 17 UI Kit](https://www.figma.com/community/file/1248375255495415511) for details.
+ const TextStyle _kDefaultActionSmallTextStyle = TextStyle(
+   inherit: false,
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   fontSize: 15.0,
+   letterSpacing: -0.23,
+   color: CupertinoColors.activeBlue,
+@@ -62,7 +62,7 @@ const TextStyle _kDefaultActionSmallTextStyle = TextStyle(
+ // Values derived from https://developer.apple.com/design/resources/.
+ const TextStyle _kDefaultTabLabelTextStyle = TextStyle(
+   inherit: false,
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   fontSize: 10.0,
+   fontWeight: FontWeight.w500,
+   letterSpacing: -0.24,
+@@ -71,7 +71,7 @@ const TextStyle _kDefaultTabLabelTextStyle = TextStyle(
+ 
+ const TextStyle _kDefaultMiddleTitleTextStyle = TextStyle(
+   inherit: false,
+-  fontFamily: 'CupertinoSystemText',
++  fontFamily: 'PingFang SC',
+   fontSize: 17.0,
+   fontWeight: FontWeight.w600,
+   letterSpacing: -0.41,
+@@ -80,7 +80,7 @@ const TextStyle _kDefaultMiddleTitleTextStyle = TextStyle(
+ 
+ const TextStyle _kDefaultLargeTitleTextStyle = TextStyle(
+   inherit: false,
+-  fontFamily: 'CupertinoSystemDisplay',
++  fontFamily: 'PingFang SC',
+   fontSize: 34.0,
+   fontWeight: FontWeight.w700,
+   letterSpacing: 0.38,
+diff --git a/packages/flutter/lib/src/material/chip.dart b/packages/flutter/lib/src/material/chip.dart
+index 2392098ed6..d680f5950b 100644
+--- a/packages/flutter/lib/src/material/chip.dart
++++ b/packages/flutter/lib/src/material/chip.dart
+@@ -2339,7 +2339,7 @@ class _UnconstrainedInkSplashFactory extends InteractiveInkFeatureFactory {
+     required TextDirection textDirection,
+     bool containedInkWell = false,
+     RectCallback? rectCallback,
+-    BorderRadius? borderRadius,
++    BorderRadiusGeometry? borderRadius,
+     ShapeBorder? customBorder,
+     double? radius,
+     VoidCallback? onRemoved,
+@@ -2350,7 +2350,7 @@ class _UnconstrainedInkSplashFactory extends InteractiveInkFeatureFactory {
+       position: position,
+       color: color,
+       rectCallback: rectCallback,
+-      borderRadius: borderRadius,
++      borderRadius: borderRadius?.resolve(textDirection),
+       customBorder: customBorder,
+       radius: radius,
+       onRemoved: onRemoved,
+diff --git a/packages/flutter/lib/src/material/ink_highlight.dart b/packages/flutter/lib/src/material/ink_highlight.dart
+index a44ad58e14..bd92bbb8fc 100644
+--- a/packages/flutter/lib/src/material/ink_highlight.dart
++++ b/packages/flutter/lib/src/material/ink_highlight.dart
+@@ -48,7 +48,7 @@ class InkHighlight extends InteractiveInkFeature {
+     required TextDirection textDirection,
+     BoxShape shape = BoxShape.rectangle,
+     double? radius,
+-    BorderRadius? borderRadius,
++    BorderRadiusGeometry? borderRadius,
+     super.customBorder,
+     RectCallback? rectCallback,
+     super.onRemoved,
+@@ -73,7 +73,7 @@ class InkHighlight extends InteractiveInkFeature {
+ 
+   final BoxShape _shape;
+   final double? _radius;
+-  final BorderRadius _borderRadius;
++  final BorderRadiusGeometry? _borderRadius;
+   final RectCallback? _rectCallback;
+   final TextDirection _textDirection;
+ 
+@@ -118,10 +118,22 @@ class InkHighlight extends InteractiveInkFeature {
+         canvas.drawCircle(rect.center, _radius ?? Material.defaultSplashRadius, paint);
+       case BoxShape.rectangle:
+         if (_borderRadius != BorderRadius.zero) {
++          Radius tl=Radius.zero, tr=Radius.zero, bl=Radius.zero, br=Radius.zero;
++          if (_borderRadius is BorderRadiusDirectional) {
++            tl = (_borderRadius as BorderRadiusDirectional).topStart;
++            tr = (_borderRadius as BorderRadiusDirectional).topEnd;
++            bl = (_borderRadius as BorderRadiusDirectional).bottomStart;
++            br = (_borderRadius as BorderRadiusDirectional).bottomEnd;
++          } else if (_borderRadius is BorderRadius) {
++            tl = (_borderRadius as BorderRadius).topLeft;
++            tr = (_borderRadius as BorderRadius).topRight;
++            bl = (_borderRadius as BorderRadius).bottomLeft;
++            br = (_borderRadius as BorderRadius).bottomRight;
++          }
+           final RRect clipRRect = RRect.fromRectAndCorners(
+             rect,
+-            topLeft: _borderRadius.topLeft, topRight: _borderRadius.topRight,
+-            bottomLeft: _borderRadius.bottomLeft, bottomRight: _borderRadius.bottomRight,
++            topLeft: tl, topRight: tr,
++            bottomLeft: bl, bottomRight: br,
+           );
+           canvas.drawRRect(clipRRect, paint);
+         } else {
+diff --git a/packages/flutter/lib/src/painting/gradient.dart b/packages/flutter/lib/src/painting/gradient.dart
+index ec20813520..112d9ec200 100644
+--- a/packages/flutter/lib/src/painting/gradient.dart
++++ b/packages/flutter/lib/src/painting/gradient.dart
+@@ -227,7 +227,7 @@ abstract class Gradient {
+   /// The shader's transform will be resolved from the [transform] of this
+   /// gradient.
+   @factory
+-  Shader createShader(Rect rect, { TextDirection? textDirection });
++  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr});
+ 
+   /// Returns a new gradient with its properties scaled by the given factor.
+   ///
+@@ -434,7 +434,7 @@ class LinearGradient extends Gradient {
+   final TileMode tileMode;
+ 
+   @override
+-  Shader createShader(Rect rect, { TextDirection? textDirection }) {
++  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr}) {
+     return ui.Gradient.linear(
+       begin.resolve(textDirection).withinRect(rect),
+       end.resolve(textDirection).withinRect(rect),
+@@ -722,7 +722,7 @@ class RadialGradient extends Gradient {
+   final double focalRadius;
+ 
+   @override
+-  Shader createShader(Rect rect, { TextDirection? textDirection }) {
++  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr}) {
+     return ui.Gradient.radial(
+       center.resolve(textDirection).withinRect(rect),
+       radius * rect.shortestSide,
+@@ -1008,7 +1008,7 @@ class SweepGradient extends Gradient {
+   final TileMode tileMode;
+ 
+   @override
+-  Shader createShader(Rect rect, { TextDirection? textDirection }) {
++  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr}) {
+     return ui.Gradient.sweep(
+       center.resolve(textDirection).withinRect(rect),
+       colors, _impliedStops(), tileMode,
+diff --git a/packages/flutter/lib/src/painting/text_style.dart b/packages/flutter/lib/src/painting/text_style.dart
+index 945e035f02..b884c80cad 100644
+--- a/packages/flutter/lib/src/painting/text_style.dart
++++ b/packages/flutter/lib/src/painting/text_style.dart
+@@ -30,6 +30,11 @@ const String _kColorForegroundWarning = 'Cannot provide both a color and a foreg
+ const String _kColorBackgroundWarning = 'Cannot provide both a backgroundColor and a background\n'
+     'The backgroundColor argument is just a shorthand for "background: Paint()..color = color".';
+ 
++List<String>? _sFontFamilyFallback = [];
++void TextStyleSetFontFamilyFallback(List<String>? fontFamilyFallback) {
++  _sFontFamilyFallback = fontFamilyFallback;
++}
++
+ // Examples can assume:
+ // late BuildContext context;
+ 
+@@ -601,7 +606,10 @@ class TextStyle with Diagnosticable {
+   /// prefixed with 'packages/package_name/' (e.g. 'packages/cool_fonts/Roboto').
+   /// The package name should be provided by the `package` argument in the
+   /// constructor.
+-  List<String>? get fontFamilyFallback => _package == null ? _fontFamilyFallback : _fontFamilyFallback?.map((String str) => 'packages/$_package/$str').toList();
++  List<String>? get fontFamilyFallback {
++    List<String>? fallbackFontFamily = _package == null ? _fontFamilyFallback : _fontFamilyFallback?.map((String str) => 'packages/$_package/$str').toList();
++    return fallbackFontFamily ?? _sFontFamilyFallback;
++  }
+   final List<String>? _fontFamilyFallback;
+ 
+   // This is stored in order to prefix the fontFamilies in _fontFamilyFallback
+diff --git a/packages/flutter_tools/lib/src/build_info.dart b/packages/flutter_tools/lib/src/build_info.dart
+index 0d1ec5bb5e..4d8f06bb4a 100644
+--- a/packages/flutter_tools/lib/src/build_info.dart
++++ b/packages/flutter_tools/lib/src/build_info.dart
+@@ -12,12 +12,39 @@ import 'base/file_system.dart';
+ import 'base/logger.dart';
+ import 'base/os.dart';
+ import 'base/utils.dart';
++import 'base/process.dart';
+ import 'convert.dart';
+ import 'globals.dart' as globals;
++import 'package:path/path.dart' as p;
+ 
+ /// Whether icon font subsetting is enabled by default.
+ const bool kIconTreeShakerEnabledDefault = true;
+ 
++
++Future<RunResult?> executePrebuildScript({bool fullRestart = true}) async {
++  final String intlToolPath = p.join(globals.fs.currentDirectory.path, 'tools', 'intl_cli', 'intl_cli');
++  if (globals.fs.file(intlToolPath).existsSync()){
++    final List<String> extraArgs = fullRestart ? <String>['-c'] : <String>[];
++    final RunResult ret = await globals.processUtils.run(
++      <String>[intlToolPath, '-p', globals.fs.currentDirectory.path, ...extraArgs],
++      workingDirectory: globals.fs.currentDirectory.path,
++    );
++    return ret;
++  }
++
++  final String prebuildScriptPath =  p.join(globals.fs.currentDirectory.path, 'banban_base','prebuild.py');
++  final File scriptFile = globals.fs.file(prebuildScriptPath);
++  if (scriptFile.existsSync()) {
++    final RunResult ret = await globals.processUtils.run(
++      <String>['python3', prebuildScriptPath],
++      workingDirectory: globals.fs.currentDirectory.path,
++    );
++    return ret;
++  }
++
++  return null;
++}
++
+ /// Information about a build to be performed or used.
+ class BuildInfo {
+   const BuildInfo(
+diff --git a/packages/flutter_tools/lib/src/commands/build.dart b/packages/flutter_tools/lib/src/commands/build.dart
+index 8ae6ec3baf..222a45d28a 100644
+--- a/packages/flutter_tools/lib/src/commands/build.dart
++++ b/packages/flutter_tools/lib/src/commands/build.dart
+@@ -123,6 +123,15 @@ abstract class BuildSubCommand extends FlutterCommand {
+ 
+   bool get supported => true;
+ 
++  @override
++  Future<FlutterCommandResult> runCommand() async {
++    final RunResult? ret = await executePrebuildScript(fullRestart: false);
++    if ((ret?.exitCode ?? 0) != 0) {
++      return FlutterCommandResult.fail();
++    }
++    return FlutterCommandResult.success();
++  }
++
+   /// Display a message describing the current null safety runtime mode
+   /// that was selected.
+   ///
+diff --git a/packages/flutter_tools/lib/src/commands/build_apk.dart b/packages/flutter_tools/lib/src/commands/build_apk.dart
+index ca34ad7305..0c02605be1 100644
+--- a/packages/flutter_tools/lib/src/commands/build_apk.dart
++++ b/packages/flutter_tools/lib/src/commands/build_apk.dart
+@@ -129,6 +129,7 @@ class BuildApkCommand extends BuildSubCommand {
+ 
+   @override
+   Future<FlutterCommandResult> runCommand() async {
++    await super.runCommand();
+     if (globals.androidSdk == null) {
+       exitWithNoSdkMessage();
+     }
+diff --git a/packages/flutter_tools/lib/src/commands/build_appbundle.dart b/packages/flutter_tools/lib/src/commands/build_appbundle.dart
+index d0a6188293..a81b8f8333 100644
+--- a/packages/flutter_tools/lib/src/commands/build_appbundle.dart
++++ b/packages/flutter_tools/lib/src/commands/build_appbundle.dart
+@@ -134,6 +134,8 @@ class BuildAppBundleCommand extends BuildSubCommand {
+ 
+   @override
+   Future<FlutterCommandResult> runCommand() async {
++    await super.runCommand();
++
+     if (globals.androidSdk == null) {
+       exitWithNoSdkMessage();
+     }
+diff --git a/packages/flutter_tools/lib/src/commands/build_ios.dart b/packages/flutter_tools/lib/src/commands/build_ios.dart
+index 3401776c52..5c287d55a0 100644
+--- a/packages/flutter_tools/lib/src/commands/build_ios.dart
++++ b/packages/flutter_tools/lib/src/commands/build_ios.dart
+@@ -671,6 +671,8 @@ abstract class _BuildIOSSubCommand extends BuildSubCommand {
+ 
+   @override
+   Future<FlutterCommandResult> runCommand() async {
++    await super.runCommand();
++
+     defaultBuildMode = environmentType == EnvironmentType.simulator ? BuildMode.debug : BuildMode.release;
+     final BuildInfo buildInfo = await cachedBuildInfo;
+ 
+diff --git a/packages/flutter_tools/lib/src/flutter_manifest.dart b/packages/flutter_tools/lib/src/flutter_manifest.dart
+index 537714826f..c45a71bea0 100644
+--- a/packages/flutter_tools/lib/src/flutter_manifest.dart
++++ b/packages/flutter_tools/lib/src/flutter_manifest.dart
+@@ -543,6 +543,8 @@ void _validateFlutter(YamlMap? yaml, List<String> errors) {
+         errors.addAll(pluginErrors);
+       case 'generate':
+         break;
++      case 'assets-filter':
++        break;
+       case 'deferred-components':
+         _validateDeferredComponents(kvp, errors);
+       case 'disable-swift-package-manager':
+diff --git a/packages/flutter_tools/lib/src/run_hot.dart b/packages/flutter_tools/lib/src/run_hot.dart
+index 80b414ece2..e631ec9143 100644
+--- a/packages/flutter_tools/lib/src/run_hot.dart
++++ b/packages/flutter_tools/lib/src/run_hot.dart
+@@ -14,6 +14,7 @@ import 'base/context.dart';
+ import 'base/file_system.dart';
+ import 'base/logger.dart';
+ import 'base/platform.dart';
++import 'base/process.dart';
+ import 'base/utils.dart';
+ import 'build_info.dart';
+ import 'compile.dart';
+@@ -379,6 +380,12 @@ class HotRunner extends ResidentRunner {
+       );
+     }
+ 
++    final RunResult? ret = await executePrebuildScript(fullRestart: false);
++    if ((ret?.exitCode ?? 0) != 0) {
++      globals.printError('Prebuild script execution failed in run() !!! $ret');
++      return 1;
++    }
++
+     final Stopwatch appStartedTimer = Stopwatch()..start();
+     final File mainFile = globals.fs.file(mainPath);
+ 
+@@ -762,6 +769,14 @@ class HotRunner extends ResidentRunner {
+       return OperationResult(1, 'Device initialization has not completed.');
+     }
+     await _calculateTargetPlatform();
++
++    final RunResult? ret = await executePrebuildScript(fullRestart: false);
++    if ((ret?.exitCode ?? 0) != 0) {
++      const String errorMsg = 'Prebuild script execution failed in restart() !!!';
++      globals.printError(errorMsg);
++      return OperationResult(1, errorMsg);
++    }
++
+     final Stopwatch timer = Stopwatch()..start();
+ 
+     // Run source generation if needed.
diff --git a/packages/flutter/lib/src/cupertino/dialog.dart b/packages/flutter/lib/src/cupertino/dialog.dart
index ccb068e870..54e82973df 100644
--- a/packages/flutter/lib/src/cupertino/dialog.dart
+++ b/packages/flutter/lib/src/cupertino/dialog.dart
@@ -31,7 +31,7 @@ import 'theme.dart';
 // Apple Design Resources(https://developer.apple.com/design/resources/).
 // However the values are not exactly the same as native, so eyeballing is needed.
 const TextStyle _kCupertinoDialogTitleStyle = TextStyle(
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   inherit: false,
   fontSize: 17.0,
   fontWeight: FontWeight.w600,
@@ -41,7 +41,7 @@ const TextStyle _kCupertinoDialogTitleStyle = TextStyle(
 );
 
 const TextStyle _kCupertinoDialogContentStyle = TextStyle(
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   inherit: false,
   fontSize: 13.0,
   fontWeight: FontWeight.w400,
@@ -51,7 +51,7 @@ const TextStyle _kCupertinoDialogContentStyle = TextStyle(
 );
 
 const TextStyle _kCupertinoDialogActionStyle = TextStyle(
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   inherit: false,
   fontSize: 16.8,
   fontWeight: FontWeight.w400,
@@ -61,7 +61,7 @@ const TextStyle _kCupertinoDialogActionStyle = TextStyle(
 // CupertinoActionSheet-specific text styles.
 const TextStyle _kActionSheetActionStyle = TextStyle(
   // The fontSize and fontWeight may be adjusted when the text is rendered.
-  fontFamily: 'CupertinoSystemDisplay',
+  fontFamily: 'PingFang SC',
   inherit: false,
   fontSize: 17.0,
   fontWeight: FontWeight.w400,
@@ -69,7 +69,7 @@ const TextStyle _kActionSheetActionStyle = TextStyle(
 );
 
 const TextStyle _kActionSheetContentStyle = TextStyle(
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   inherit: false,
   fontSize: 13.0,
   fontWeight: FontWeight.w400,
diff --git a/packages/flutter/lib/src/cupertino/text_theme.dart b/packages/flutter/lib/src/cupertino/text_theme.dart
index 6640c56ec7..6ff3beab05 100644
--- a/packages/flutter/lib/src/cupertino/text_theme.dart
+++ b/packages/flutter/lib/src/cupertino/text_theme.dart
@@ -18,7 +18,7 @@ import 'colors.dart';
 // Values derived from https://developer.apple.com/design/resources/.
 const TextStyle _kDefaultTextStyle = TextStyle(
   inherit: false,
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   fontSize: 17.0,
   letterSpacing: -0.41,
   color: CupertinoColors.label,
@@ -33,7 +33,7 @@ const TextStyle _kDefaultTextStyle = TextStyle(
 // See [iOS 17 + iPadOS 17 UI Kit](https://www.figma.com/community/file/1248375255495415511) for details.
 const TextStyle _kDefaultActionTextStyle = TextStyle(
   inherit: false,
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   fontSize: 17.0,
   letterSpacing: -0.41,
   color: CupertinoColors.activeBlue,
@@ -48,7 +48,7 @@ const TextStyle _kDefaultActionTextStyle = TextStyle(
 // See [iOS 17 + iPadOS 17 UI Kit](https://www.figma.com/community/file/1248375255495415511) for details.
 const TextStyle _kDefaultActionSmallTextStyle = TextStyle(
   inherit: false,
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   fontSize: 15.0,
   letterSpacing: -0.23,
   color: CupertinoColors.activeBlue,
@@ -62,7 +62,7 @@ const TextStyle _kDefaultActionSmallTextStyle = TextStyle(
 // Values derived from https://developer.apple.com/design/resources/.
 const TextStyle _kDefaultTabLabelTextStyle = TextStyle(
   inherit: false,
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   fontSize: 10.0,
   fontWeight: FontWeight.w500,
   letterSpacing: -0.24,
@@ -71,7 +71,7 @@ const TextStyle _kDefaultTabLabelTextStyle = TextStyle(
 
 const TextStyle _kDefaultMiddleTitleTextStyle = TextStyle(
   inherit: false,
-  fontFamily: 'CupertinoSystemText',
+  fontFamily: 'PingFang SC',
   fontSize: 17.0,
   fontWeight: FontWeight.w600,
   letterSpacing: -0.41,
@@ -80,7 +80,7 @@ const TextStyle _kDefaultMiddleTitleTextStyle = TextStyle(
 
 const TextStyle _kDefaultLargeTitleTextStyle = TextStyle(
   inherit: false,
-  fontFamily: 'CupertinoSystemDisplay',
+  fontFamily: 'PingFang SC',
   fontSize: 34.0,
   fontWeight: FontWeight.w700,
   letterSpacing: 0.38,
diff --git a/packages/flutter/lib/src/material/chip.dart b/packages/flutter/lib/src/material/chip.dart
index 2bbe2bab48..d20e552b91 100644
--- a/packages/flutter/lib/src/material/chip.dart
+++ b/packages/flutter/lib/src/material/chip.dart
@@ -2366,7 +2366,7 @@ class _UnconstrainedInkSplashFactory extends InteractiveInkFeatureFactory {
     required TextDirection textDirection,
     bool containedInkWell = false,
     RectCallback? rectCallback,
-    BorderRadius? borderRadius,
+    BorderRadiusGeometry? borderRadius,
     ShapeBorder? customBorder,
     double? radius,
     VoidCallback? onRemoved,
@@ -2377,7 +2377,7 @@ class _UnconstrainedInkSplashFactory extends InteractiveInkFeatureFactory {
       position: position,
       color: color,
       rectCallback: rectCallback,
-      borderRadius: borderRadius,
+      borderRadius: borderRadius?.resolve(textDirection),
       customBorder: customBorder,
       radius: radius,
       onRemoved: onRemoved,
diff --git a/packages/flutter/lib/src/material/ink_highlight.dart b/packages/flutter/lib/src/material/ink_highlight.dart
index ac4f1bd380..ca80631a5f 100644
--- a/packages/flutter/lib/src/material/ink_highlight.dart
+++ b/packages/flutter/lib/src/material/ink_highlight.dart
@@ -48,7 +48,7 @@ class InkHighlight extends InteractiveInkFeature {
     required TextDirection textDirection,
     BoxShape shape = BoxShape.rectangle,
     double? radius,
-    BorderRadius? borderRadius,
+    BorderRadiusGeometry? borderRadius,
     super.customBorder,
     RectCallback? rectCallback,
     super.onRemoved,
@@ -71,7 +71,7 @@ class InkHighlight extends InteractiveInkFeature {
 
   final BoxShape _shape;
   final double? _radius;
-  final BorderRadius _borderRadius;
+  final BorderRadiusGeometry? _borderRadius;
   final RectCallback? _rectCallback;
   final TextDirection _textDirection;
 
@@ -116,12 +116,22 @@ class InkHighlight extends InteractiveInkFeature {
         canvas.drawCircle(rect.center, _radius ?? Material.defaultSplashRadius, paint);
       case BoxShape.rectangle:
         if (_borderRadius != BorderRadius.zero) {
+          Radius tl=Radius.zero, tr=Radius.zero, bl=Radius.zero, br=Radius.zero;
+          if (_borderRadius is BorderRadiusDirectional) {
+            tl = (_borderRadius as BorderRadiusDirectional).topStart;
+            tr = (_borderRadius as BorderRadiusDirectional).topEnd;
+            bl = (_borderRadius as BorderRadiusDirectional).bottomStart;
+            br = (_borderRadius as BorderRadiusDirectional).bottomEnd;
+          } else if (_borderRadius is BorderRadius) {
+            tl = (_borderRadius as BorderRadius).topLeft;
+            tr = (_borderRadius as BorderRadius).topRight;
+            bl = (_borderRadius as BorderRadius).bottomLeft;
+            br = (_borderRadius as BorderRadius).bottomRight;
+          }
           final RRect clipRRect = RRect.fromRectAndCorners(
             rect,
-            topLeft: _borderRadius.topLeft,
-            topRight: _borderRadius.topRight,
-            bottomLeft: _borderRadius.bottomLeft,
-            bottomRight: _borderRadius.bottomRight,
+            topLeft: tl, topRight: tr,
+            bottomLeft: bl, bottomRight: br,
           );
           canvas.drawRRect(clipRRect, paint);
         } else {
diff --git a/packages/flutter/lib/src/painting/gradient.dart b/packages/flutter/lib/src/painting/gradient.dart
index 52a3aa7606..aacbc4dd4c 100644
--- a/packages/flutter/lib/src/painting/gradient.dart
+++ b/packages/flutter/lib/src/painting/gradient.dart
@@ -223,7 +223,7 @@ abstract class Gradient {
   /// The shader's transform will be resolved from the [transform] of this
   /// gradient.
   @factory
-  Shader createShader(Rect rect, {TextDirection? textDirection});
+  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr});
 
   /// Returns a new gradient with its properties scaled by the given factor.
   ///
@@ -430,7 +430,7 @@ class LinearGradient extends Gradient {
   final TileMode tileMode;
 
   @override
-  Shader createShader(Rect rect, {TextDirection? textDirection}) {
+  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr}) {
     return ui.Gradient.linear(
       begin.resolve(textDirection).withinRect(rect),
       end.resolve(textDirection).withinRect(rect),
@@ -719,7 +719,7 @@ class RadialGradient extends Gradient {
   final double focalRadius;
 
   @override
-  Shader createShader(Rect rect, {TextDirection? textDirection}) {
+  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr}) {
     return ui.Gradient.radial(
       center.resolve(textDirection).withinRect(rect),
       radius * rect.shortestSide,
@@ -1005,7 +1005,7 @@ class SweepGradient extends Gradient {
   final TileMode tileMode;
 
   @override
-  Shader createShader(Rect rect, {TextDirection? textDirection}) {
+  Shader createShader(Rect rect, { TextDirection? textDirection = TextDirection.ltr}) {
     return ui.Gradient.sweep(
       center.resolve(textDirection).withinRect(rect),
       colors,
diff --git a/packages/flutter/lib/src/painting/text_style.dart b/packages/flutter/lib/src/painting/text_style.dart
index a76b643cdb..1393373578 100644
--- a/packages/flutter/lib/src/painting/text_style.dart
+++ b/packages/flutter/lib/src/painting/text_style.dart
@@ -28,6 +28,11 @@ const String _kColorBackgroundWarning =
     'Cannot provide both a backgroundColor and a background\n'
     'The backgroundColor argument is just a shorthand for "background: Paint()..color = color".';
 
+List<String>? _sFontFamilyFallback = [];
+void TextStyleSetFontFamilyFallback(List<String>? fontFamilyFallback) {
+  _sFontFamilyFallback = fontFamilyFallback;
+}
+
 // Examples can assume:
 // late BuildContext context;
 
@@ -598,10 +603,10 @@ class TextStyle with Diagnosticable {
   /// prefixed with 'packages/package_name/' (e.g. 'packages/cool_fonts/Roboto').
   /// The package name should be provided by the `package` argument in the
   /// constructor.
-  List<String>? get fontFamilyFallback =>
-      _package == null
-          ? _fontFamilyFallback
-          : _fontFamilyFallback?.map((String str) => 'packages/$_package/$str').toList();
+  List<String>? get fontFamilyFallback {
+    List<String>? fallbackFontFamily = _package == null ? _fontFamilyFallback : _fontFamilyFallback?.map((String str) => 'packages/$_package/$str').toList();
+    return fallbackFontFamily ?? _sFontFamilyFallback;
+  }
   final List<String>? _fontFamilyFallback;
 
   // This is stored in order to prefix the fontFamilies in _fontFamilyFallback
diff --git a/packages/flutter_tools/lib/src/build_info.dart b/packages/flutter_tools/lib/src/build_info.dart
index 4fdeb11d04..e50f350cf0 100644
--- a/packages/flutter_tools/lib/src/build_info.dart
+++ b/packages/flutter_tools/lib/src/build_info.dart
@@ -12,12 +12,39 @@ import 'base/file_system.dart';
 import 'base/logger.dart';
 import 'base/os.dart';
 import 'base/utils.dart';
+import 'base/process.dart';
 import 'convert.dart';
 import 'globals.dart' as globals;
+import 'package:path/path.dart' as p;
 
 /// Whether icon font subsetting is enabled by default.
 const bool kIconTreeShakerEnabledDefault = true;
 
+
+Future<RunResult?> executePrebuildScript({bool fullRestart = true}) async {
+  final String intlToolPath = p.join(globals.fs.currentDirectory.path, 'tools', 'intl_cli', 'intl_cli');
+  if (globals.fs.file(intlToolPath).existsSync()){
+    final List<String> extraArgs = fullRestart ? <String>['-c'] : <String>[];
+    final RunResult ret = await globals.processUtils.run(
+      <String>[intlToolPath, '-p', globals.fs.currentDirectory.path, ...extraArgs],
+      workingDirectory: globals.fs.currentDirectory.path,
+    );
+    return ret;
+  }
+
+  final String prebuildScriptPath =  p.join(globals.fs.currentDirectory.path, 'banban_base','prebuild.py');
+  final File scriptFile = globals.fs.file(prebuildScriptPath);
+  if (scriptFile.existsSync()) {
+    final RunResult ret = await globals.processUtils.run(
+      <String>['python3', prebuildScriptPath],
+      workingDirectory: globals.fs.currentDirectory.path,
+    );
+    return ret;
+  }
+
+  return null;
+}
+
 /// Information about a build to be performed or used.
 class BuildInfo {
   const BuildInfo(
diff --git a/packages/flutter_tools/lib/src/commands/build.dart b/packages/flutter_tools/lib/src/commands/build.dart
index 0be2726cd4..c0a51587af 100644
--- a/packages/flutter_tools/lib/src/commands/build.dart
+++ b/packages/flutter_tools/lib/src/commands/build.dart
@@ -8,6 +8,8 @@ import '../android/android_sdk.dart';
 import '../base/file_system.dart';
 import '../base/logger.dart';
 import '../base/os.dart';
+import '../base/process.dart';
+import '../build_info.dart';
 import '../build_system/build_system.dart';
 import '../commands/build_linux.dart';
 import '../commands/build_macos.dart';
@@ -96,4 +98,13 @@ abstract class BuildSubCommand extends FlutterCommand {
 
   /// Whether this command is supported and should be shown.
   bool get supported => true;
+
+  @override
+  Future<FlutterCommandResult> runCommand() async {
+    final RunResult? ret = await executePrebuildScript(fullRestart: false);
+    if ((ret?.exitCode ?? 0) != 0) {
+      return FlutterCommandResult.fail();
+    }
+    return FlutterCommandResult.success();
+  }
 }
diff --git a/packages/flutter_tools/lib/src/commands/build_apk.dart b/packages/flutter_tools/lib/src/commands/build_apk.dart
index 656bb2b166..41e0a2b9d7 100644
--- a/packages/flutter_tools/lib/src/commands/build_apk.dart
+++ b/packages/flutter_tools/lib/src/commands/build_apk.dart
@@ -125,6 +125,7 @@ class BuildApkCommand extends BuildSubCommand {
 
   @override
   Future<FlutterCommandResult> runCommand() async {
+    await super.runCommand();
     if (globals.androidSdk == null) {
       exitWithNoSdkMessage();
     }
diff --git a/packages/flutter_tools/lib/src/commands/build_appbundle.dart b/packages/flutter_tools/lib/src/commands/build_appbundle.dart
index 938bd290fc..c4c0ff0828 100644
--- a/packages/flutter_tools/lib/src/commands/build_appbundle.dart
+++ b/packages/flutter_tools/lib/src/commands/build_appbundle.dart
@@ -114,6 +114,8 @@ class BuildAppBundleCommand extends BuildSubCommand {
 
   @override
   Future<FlutterCommandResult> runCommand() async {
+    await super.runCommand();
+
     if (globals.androidSdk == null) {
       exitWithNoSdkMessage();
     }
diff --git a/packages/flutter_tools/lib/src/commands/build_ios.dart b/packages/flutter_tools/lib/src/commands/build_ios.dart
index 8d1e2eca9d..fa1ef99192 100644
--- a/packages/flutter_tools/lib/src/commands/build_ios.dart
+++ b/packages/flutter_tools/lib/src/commands/build_ios.dart
@@ -723,8 +723,9 @@ abstract class _BuildIOSSubCommand extends BuildSubCommand {
 
   @override
   Future<FlutterCommandResult> runCommand() async {
-    defaultBuildMode =
-        environmentType == EnvironmentType.simulator ? BuildMode.debug : BuildMode.release;
+    await super.runCommand();
+
+    defaultBuildMode = environmentType == EnvironmentType.simulator ? BuildMode.debug : BuildMode.release;
     final BuildInfo buildInfo = await cachedBuildInfo;
 
     if (!supported) {
diff --git a/packages/flutter_tools/lib/src/flutter_manifest.dart b/packages/flutter_tools/lib/src/flutter_manifest.dart
index 0fe600cc3a..57772e8c46 100644
--- a/packages/flutter_tools/lib/src/flutter_manifest.dart
+++ b/packages/flutter_tools/lib/src/flutter_manifest.dart
@@ -608,6 +608,8 @@ void _validateFlutter(YamlMap? yaml, List<String> errors) {
         errors.addAll(pluginErrors);
       case 'generate':
         break;
+      case 'assets-filter':
+        break;
       case 'deferred-components':
         _validateDeferredComponents(kvp, errors);
       case 'disable-swift-package-manager':
diff --git a/packages/flutter_tools/lib/src/run_hot.dart b/packages/flutter_tools/lib/src/run_hot.dart
index dcabe91249..bade762bd5 100644
--- a/packages/flutter_tools/lib/src/run_hot.dart
+++ b/packages/flutter_tools/lib/src/run_hot.dart
@@ -14,6 +14,7 @@ import 'base/context.dart';
 import 'base/file_system.dart';
 import 'base/logger.dart';
 import 'base/platform.dart';
+import 'base/process.dart';
 import 'base/utils.dart';
 import 'build_info.dart';
 import 'compile.dart';
@@ -383,6 +384,12 @@ class HotRunner extends ResidentRunner {
     final Uri? nativeAssetsYaml =
         _nativeAssetsYamlFile != null ? globals.fs.path.toUri(_nativeAssetsYamlFile) : null;
 
+    final RunResult? ret = await executePrebuildScript(fullRestart: false);
+    if ((ret?.exitCode ?? 0) != 0) {
+      globals.printError('Prebuild script execution failed in run() !!! $ret');
+      return 1;
+    }
+
     final Stopwatch appStartedTimer = Stopwatch()..start();
     final File mainFile = globals.fs.file(mainPath);
 
@@ -780,6 +787,14 @@ class HotRunner extends ResidentRunner {
       return OperationResult(1, 'Device initialization has not completed.');
     }
     await _calculateTargetPlatform();
+
+    final RunResult? ret = await executePrebuildScript(fullRestart: false);
+    if ((ret?.exitCode ?? 0) != 0) {
+      const String errorMsg = 'Prebuild script execution failed in restart() !!!';
+      globals.printError(errorMsg);
+      return OperationResult(1, errorMsg);
+    }
+
     final Stopwatch timer = Stopwatch()..start();
 
     // Run source generation if needed.