Merge pull request #117 from cake-tech/CAKE-97-date-picker-for-ios

Cake 97 date picker for ios

lib/src/widgets/blockchain_height_widget.dart

@@ -1,3 +1,4 @@
+import 'package:cake_wallet/utils/date_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 import 'package:cake_wallet/generated/i18n.dart';
@@ -88,7 +89,7 @@ class BlockchainHeightState extends State<BlockchainHeightWidget> {
 
   Future _selectDate(BuildContext context) async {
     final now = DateTime.now();
-    final date = await showDatePicker(
+    final date = await getDate(
         context: context,
         initialDate: now.subtract(Duration(days: 1)),
         firstDate: DateTime(2014, DateTime.april),

lib/utils/date_picker.dart

@@ -0,0 +1,54 @@
+import 'dart:io';
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+Future<DateTime> getDate({
+  @required BuildContext context,
+  @required DateTime initialDate,
+  @required DateTime firstDate,
+  @required DateTime lastDate}) {
+
+  if (Platform.isIOS) {
+    return _buildCupertinoDataPicker(context, initialDate, firstDate, lastDate);
+  }
+
+  return _buildMaterialDataPicker(context, initialDate, firstDate, lastDate);
+}
+
+Future<DateTime> _buildMaterialDataPicker(
+  BuildContext context,
+  DateTime initialDate,
+  DateTime firstDate,
+  DateTime lastDate) async {
+  return await showDatePicker(
+      context: context,
+      initialDate: initialDate,
+      firstDate: firstDate,
+      lastDate: lastDate,
+      helpText: '');
+}
+
+Future<DateTime> _buildCupertinoDataPicker(
+  BuildContext context,
+  DateTime initialDate,
+  DateTime firstDate,
+  DateTime lastDate) async {
+  DateTime date;
+  await showModalBottomSheet<void>(
+      context: context,
+      builder: (_) {
+        return Container(
+          height: MediaQuery.of(context).size.height / 3,
+          child: CupertinoDatePicker(
+            mode: CupertinoDatePickerMode.date,
+            onDateTimeChanged: (picked) => date = picked,
+            initialDateTime: initialDate,
+            minimumDate: firstDate,
+            maximumDate: lastDate,
+            backgroundColor: Colors.white,
+          ),
+        );
+      }
+  );
+  return date;
+}