我想在使用聚合物的应用程序中实现主要功能。
我试图在实现聚合物代码的dart文件中实现main函数。
该代码未执行。
不允许在主功能中包含第二个 Dart 脚本-
我的错误在哪里？
Tnx云母。
最佳答案
index.html
<head>
<!-- <link rel="import" href="packages/polymer/polymer.html"> not necessary anymore (only in elements)-->
<!-- <script src="packages/web_components/platform.js"></script>
not necessary anymore with Polymer >= 0.14.0 -->
<!-- <script src="packages/web_components/dart_support.js"></script>
not necessary anymore with Polymer >= 0.15.0 -->
<!-- old -->
<script type="application/dart">
export 'package:polymer/init.dart';</script>
<!-- new -->
<script type="application/dart">export 'index.dart';</script>
</head>
<body>
...
<!-- ... when you use a custom main method (see https://code.google.com/p/dart/issues/detail?id=17546#c16) -->
<script type="application/dart" src="index.dart"></script>
</body>
index.dart
聚合物0.17.0 (Polymer.js 1.0)
main() async {
await initPolymer();
// Any other code here.
}
聚合物0.17.0之前
聚合物 0.16.1 引入了一种更简单的初始化方式。
代替
main()，请使用带有@whenPolymerReady注释的方法// >= Polymer 0.16.1
import 'package:polymer/polymer.dart';
export 'package:polymer/init.dart';
@whenPolymerReady
void onReady() {
/// Custom setup code here.
}
在Polymer.dart 0.16.1之前
// >= Polymer 0.16.0
import "package:polymer/polymer.dart";
main() {
initPolymer().then((zone) => zone.run(() {
// code here works most of the time
Polymer.onReady.then((_) {
// some things must wait until onReady callback is called
// for an example look at the discussion linked below
});
}));
}
有关更多详细信息，请参见Polymer 0.16.0的变更日志。
https://pub.dartlang.org/packages/polymer
聚合物0.16.0之前
// < Polymer 0.16.0
import "package:polymer/polymer.dart";
main() {
initPolymer().run(() {
// code here works most of the time
Polymer.onReady.then((_) {
// some things must wait until onReady callback is called
// for an example look at the discussion linked below
});
});
}
simple tooltip working in dartium, not as javascript
关于dart - 如何在聚合物应用程序中实现主要功能，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/20982489/