examples/api/lib/widgets/framework/error_widget.0.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

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//
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// Flutter code sample for ErrorWidget
//
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//

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import 'package:flutter/material.dart';

void main() {
  ErrorWidget.builder = (FlutterErrorDetails details) {
    bool inDebug = false;
    assert(() {
      inDebug = true;
      return true;
    }());
    // In debug mode, use the normal error widget which shows
    // the error message:
    if (inDebug) {
      return ErrorWidget(details.exception);
    }
    // In release builds, show a yellow-on-blue message instead:
    return Container(
      alignment: Alignment.center,
      child: const Text(
        'Error!',
        style: TextStyle(color: Colors.yellow),
        textDirection: TextDirection.ltr,
      ),
    );
  };
  // Here we would normally runApp() the root widget, but to demonstrate
  // the error handling we artificially fail:
  return runApp(Builder(
    builder: (BuildContext context) {
      throw 'oh no, an error';
    },
  ));
}

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