通过FlutterMethodCall回调中的call中的arguments值来获取参数,强转成NSDictionary 不过iOS系统并没有直接弹吐司的方法,所以需要自定义吐司。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 importUIKitimportFlutter @UIApplicationMain @objcclassAppDelegate:FlutterAppDelegate{publicstaticletchannelId="www.toly1994...
import { NativeNetApi, NativeNetApiImp } from './NetChannel'; export default class BaseFlutterEntry extends FlutterEntry implements MethodCallHandler { private channel: MethodChannel | null = null; routeParams: string = ''; constructor(context: Context, routeParams: string) { super(context); th...
// 调用页面中的JavaScript函数controller.runJavaScript('showMessage("Hello from Flutter!")');// 修改页面元素的内容controller.runJavaScript('document.getElementById("message").innerText = "Modified by Flutter"');// 获取页面数据并传递给Fluttercontroller.runJavaScript('window.flutter_inappwebview.callHan...
Dart_Handle callback, Dart_Handle data_handle) { UIDartState* dart_state = UIDartState::Current(); if (!dart_state->platform_configuration()) { return tonic::ToDart( "Platform messages can only be sent from the main isolate"); } fml::RefPtr<PlatformMessageResponse> response; if (!Dar...
override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) { methodChannel.setMethodCallHandler(null) } override fun onListen(arguments: Any?, events: EventChannel.EventSink?) { // eventChannel 建立连接 eventSink = events ...
data.value}')), // This button just needs to call a method on Counter. No need to rebuild // it as the value of Counter changes. Therefore, we can use the value of // `Provide.value<Counter>` from above. FlatButton(child: Text('increment'), onPressed: currentCounter.increment),...
///最终需要处理的地方handleData(result){print("VVVVVVVVVVVVVVVVVVVVVVVVVVV");print(result);}///返回得到一个 ZoneUnaryCallbackvaronData=Zone.current.registerUnaryCallback<dynamic,int>(handleData);///执行 ZoneUnaryCallback 返回数据Zone.current.runUnary(onData,2); ...
典型错误二:Navigator.of(context) 是个 null 典型错误信息:NoSuchMethodError: The method 'pop' was called on null. 常在showDialog后处理 dialog 的 pop() 出现。 示例代码 在某个方法里获取网络数据,为了更好的提示用户,会先弹一个 loading 窗,之后再根据数据执行别的操作... ...
调用 notifyListeners() (ChangeNotifier的一个方法),以确保向任何通过 watch跟踪 MyAppState 的对象发出通知。Column 是 Flutter 中最基础的布局 widget 之一。它接受任意数量的子项并将这些子项从上到下放在一列中。Text widget 接受 appState,并访问该类的唯一成员 current。
/// [ScaffoldState.showBottomSheet] method. /// /// The `context` argument is used to look up the [Navigator] and [Theme] for /// the bottom sheet. It is only used when the method is called. Its /// corresponding widget can be safely removed from the tree before the bottom ...