如何让JavaFX显示API feed
如何让JavaFX显示API feed
提问于 2018-10-02 23:42:03
我的问题非常直截了当(我只是一个玩东西的休闲程序员)。我已经建立了到一个应用程序接口的连接，通过RxJava的魔力，我可以订阅这个应用程序接口发出的json数据。我还使用FXML创建了一个非常基本的GUI。
如何在每次通过订阅发出事件时更新TextArea = textAreaA中的文本？换句话说，我如何让TextArea显示API feed？
我从头到尾阅读了RxJavaFx指南，它似乎更多地关注Fx到Rx的定向事件流:(
下面是我的代码示例：
public class Tester extends Application{
private static final Logger LOG = LoggerFactory.getLogger(Tester.class);
public static void main(String[] args) throws IOException, InterruptedException{
launch(args);
}
public void start (Stage primaryStage) throws Exception {
FXMLLoader loader = new FXMLLoader(getClass().getResource("sample.fxml"));
Parent root = loader.load();
primaryStage.setTitle("App Window");
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
TESTER_API.TESTER_API_Connector();
}
}
public class TESTER_API {
public static void TESTER_API_Connector() throws IOException, InterruptedException {
StreamingEvents emissions = StreamingEventsFactory.INSTANCE.createEvents(TheseStreamingEvents.class.getName());
emissions.connect().blockingAwait();
emissions.getEvents().getSomethingSpecific()
.subscribe(event -> System.out.println(event.getSomethingSpecific()) // Here is the event that I would like to bind or otherwise push to textAreaA in the FXML controller
,throwable -> new Exception("GUI error!"));
}
}
public class FXMLDocumentController implements Initializable {
@FXML
public TextArea textAreaA;
@Override
public void initialize(URL arg0, ResourceBundle arg1) {
// TODO Auto-generated method stub
}
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-10-03 03:24:46
我的想法是让TESTER_API在FXMLDocumentController中调用一个更新textAreaA的函数。我建议使用Platform.runLater()来确保线程安全。
public class Tester extends Application{
[...]
public void start (Stage primaryStage) throws Exception {
FXMLLoader loader = new FXMLLoader(getClass().getResource("sample.fxml"));
Parent root = loader.load();
FXMLDocumentController controller = loader.getController();
primaryStage.setTitle("App Window");
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
TESTER_API.TESTER_API_Connector(controller);
}}
public class TESTER_API {
public static void TESTER_API_Connector(FXMLDocumentController controller) throws IOException, InterruptedException {
[...]
emissions.getEvents().getSomethingSpecific()
.subscribe(event -> Platform.runLater(() -> {
controller.updateTextArea(event.getSomethingSpecific());
}),
throwable -> new Exception("GUI error!"));
}}
public class FXMLDocumentController implements Initializable {
@FXML
public TextArea textAreaA;
[...]
public void updateTextArea(String string) {
textAreaA.setText(string);
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/52611839
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