ios demo version

ios/Flutter/Flutter.framework/Headers/FlutterMacros.h

@@ -0,0 +1,23 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_FLUTTERMACROS_H_
+#define FLUTTER_FLUTTERMACROS_H_
+
+#if defined(FLUTTER_FRAMEWORK)
+
+#define FLUTTER_EXPORT __attribute__((visibility("default")))
+
+#else  // defined(FLUTTER_SDK)
+
+#define FLUTTER_EXPORT
+
+#endif  // defined(FLUTTER_SDK)
+
+#ifndef NS_ASSUME_NONNULL_BEGIN
+#define NS_ASSUME_NONNULL_BEGIN _Pragma("clang assume_nonnull begin")
+#define NS_ASSUME_NONNULL_END _Pragma("clang assume_nonnull end")
+#endif  // defined(NS_ASSUME_NONNULL_BEGIN)
+
+#endif  // FLUTTER_FLUTTERMACROS_H_