adding packages

deprecated/mobile_popup/lib/pop_up.dart

@@ -0,0 +1,49 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+
+Future<T> showMobilePopup<T>({
+  @required BuildContext context,
+  bool barrierDismissible = true,
+  bool mobilePush = false,
+  WidgetBuilder builder,
+}) {
+  if (mobilePush && (Platform.isIOS || Platform.isAndroid)) {
+    return Navigator.of(context).push<T>(
+      MaterialPageRoute(builder: builder),
+    );
+  }
+
+  assert(debugCheckHasMaterialLocalizations(context));
+
+  final ThemeData theme = Theme.of(context, shadowThemeOnly: true);
+  return showGeneralDialog(
+    context: context,
+    pageBuilder: (BuildContext buildContext, Animation<double> animation,
+        Animation<double> secondaryAnimation) {
+      final Widget pageChild = Builder(builder: builder);
+      return Builder(builder: (BuildContext context) {
+        return theme != null ? Theme(data: theme, child: pageChild) : pageChild;
+      });
+    },
+    barrierDismissible: barrierDismissible,
+    barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
+    barrierColor: Colors.black54,
+    transitionDuration: const Duration(milliseconds: 150),
+    transitionBuilder: _buildMaterialDialogTransitions,
+  );
+}
+
+Widget _buildMaterialDialogTransitions(
+    BuildContext context,
+    Animation<double> animation,
+    Animation<double> secondaryAnimation,
+    Widget child) {
+  return FadeTransition(
+    opacity: CurvedAnimation(
+      parent: animation,
+      curve: Curves.easeOut,
+    ),
+    child: child,
+  );
+}