Merge pull request #291 from IIzzaya/hook1.5.4

Hook 1.5.4 Cupertino

Author: zhuxingwei

Runtime/cupertino/action_sheet.cs

@@ -27,10 +27,7 @@ public CupertinoApp(
             List<Locale> supportedLocales = null,
             bool showPerformanceOverlay = false
         ) : base(key: key) {
-            // D.assert(routes != null);
-            // D.assert(navigatorObservers != null);
-            // D.assert(title != null);
-            // D.assert(showPerformanceOverlay != null);
+            D.assert(title != null);
 
             supportedLocales = supportedLocales ?? new List<Locale> {new Locale("en", "US")};
             this.navigatorKey = navigatorKey;
@@ -124,7 +121,13 @@ void _updateNavigator() {
                 this._navigatorObservers = new List<NavigatorObserver>();
             }
         }
-
+        
+        // Iterable<LocalizationsDelegate<dynamic>> get _localizationsDelegates sync* {
+        //     if (widget.localizationsDelegates != null)
+        //         yield* widget.localizationsDelegates;
+        //     yield DefaultCupertinoLocalizations.delegate; 
+        // }
+        
         List<LocalizationsDelegate> _localizationsDelegates {
             get {
                 List<LocalizationsDelegate<CupertinoLocalizations>> _delegates =

Runtime/cupertino/action_sheet.cs.meta

@@ -31,7 +31,8 @@ public CupertinoTabBar(
                 () => "Tabs need at least 2 items to conform to Apple's HIG"
             );
             D.assert(0 <= currentIndex && currentIndex < items.Count);
-            D.assert(inactiveColor != null);
+            
+
             this.items = items;
             this.onTap = onTap;
             this.currentIndex = currentIndex;
@@ -122,13 +123,14 @@ List<Widget> _buildTabItems(BuildContext context) {
 
             for (int index = 0; index < this.items.Count; index += 1) {
                 bool active = index == this.currentIndex;
+                var tabIndex = index;
                 result.Add(
                     this._wrapActiveItem(
                         context,
                         new Expanded(
                             child: new GestureDetector(
                                 behavior: HitTestBehavior.opaque,
-                                onTap: this.onTap == null ? null : (GestureTapCallback) (() => { this.onTap(index); }),
+                                onTap: this.onTap == null ? null : (GestureTapCallback) (() => { this.onTap(tabIndex); }),
                                 child: new Padding(
                                     padding: EdgeInsets.only(bottom: 4.0f),
                                     child: new Column(

Runtime/cupertino/app.cs

@@ -31,7 +31,7 @@ public CupertinoButton(
             BorderRadius borderRadius = null,
             bool filled = false
         ) : base(key: key) {
-            D.assert(pressedOpacity == null || (pressedOpacity >= 0.0 && pressedOpacity <= 1.0));
+            D.assert(pressedOpacity >= 0.0 && pressedOpacity <= 1.0);
             this._filled = filled;
             this.child = child;
             this.onPressed = onPressed;
@@ -53,7 +53,7 @@ public static CupertinoButton filled(
             float pressedOpacity = 0.1f,
             BorderRadius borderRadius = null
         ) {
-            D.assert(pressedOpacity == null || (pressedOpacity >= 0.0 && pressedOpacity <= 1.0));
+            D.assert(pressedOpacity >= 0.0 && pressedOpacity <= 1.0);
             return new CupertinoButton(
                 key: key,
                 color: null,
@@ -202,12 +202,10 @@ public override Widget build(BuildContext context) {
                         }
                     },
                 child: new ConstrainedBox(
-                    constraints: this.widget.minSize == null
-                        ? new BoxConstraints()
-                        : new BoxConstraints(
-                            minWidth: this.widget.minSize,
-                            minHeight: this.widget.minSize
-                        ),
+                    constraints: new BoxConstraints(
+                        minWidth: this.widget.minSize,
+                        minHeight: this.widget.minSize
+                    ),
                     child: new FadeTransition(
                         opacity: this._opacityAnimation,
                         child: new DecoratedBox(