我想在控制器中调用视图方法,但我不知道如何:)我寻求的例子,但我没有找到它。我可以在这段代码中执行此操作吗?我是否必须重新建造它? 我使用javafx和fxml技术(构建用户界面)。
我的视图文件(它有gotoRegister()和gotoLogin()方法(我想调用它们))
public class FXMLExampleMVC extends Application{
protected Parent root;
@Override
public void start(Stage stage) throws Exception {
gotoLogin();
Scene scene = new Scene(root);
stage.setScene(scene);
stage.setTitle("JavaFX Welcome!");
scene.getStylesheets().add(FXMLExampleMVC.class.getResource("cssforapp.css").toExternalForm());
stage.show();
}
public void gotoRegister() throws IOException{
root = FXMLLoader.load(getClass().getResource("RegisterFXML.fxml"));
}
public void gotoLogin() throws IOException{
root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
}
public static void main(String[] args) {
launch(args);
}
}
我的控制器(这里我想调用gotoRegister()方法)
public class SampleController {
public SampleModel model = new SampleModel();
@FXML
protected Text actiontarget;
@FXML
protected PasswordField passwordField;
@FXML
protected TextField loginField;
@FXML protected void handleSubmitButtonAction(){
if((loginField.getText().equals(model.returnLogin()))&&(passwordField.getText().equals(model.returnPass())) ){
actiontarget.setText("You have access !");
} else {
actiontarget.setText("Wrong data !");
}
}
@FXML protected void handleSubmitButtonRegister() throws IOException{
//
//Here I want to invoke gotoRegister
//
}
}
我的问题:我可以调用gotoRegister吗?或者,也许是改变fxml文件的其他方法(来自控制器)?
答案 0 :(得分:5)
将此代码放在FXMLExampleMVC.java
中private static FXMLExampleMVC instance;
public FXMLExampleMVC() {
instance = this;
}
// static method to get instance of view
public static FXMLExampleMVC getInstance() {
return instance;
}
现在您可以像这样在控制器中调用您的视图方法
@FXML protected void handleSubmitButtonRegister() throws IOException{
//
//Here I want to invoke gotoRegister
FXMLExampleMVC.getInstance().gotoRegister();
}