文本框-密码框-javvafx

输入框

创建一个简单文本输入框

    public void start(Stage primaryStage) throws Exception {
        Group root = new Group();

        TextField text = new TextField();
        text.setLayoutX(100);
        text.setLayoutY(100);
        text.setFont(Font.font(14));
        text.setText("这是文本");
        root.getChildren().add(text);
        Scene scene = new Scene(root);
        primaryStage.setScene(scene);

            primaryStage.setWidth(800);
            primaryStage.setHeight(800);
            primaryStage.show( );

    }

框框的提示

所有node都有

  Tooltip tooltip = new Tooltip();
        tooltip.setText("这是提示");
        textField.setTooltip(tooltip);

警告

 text.setPromptText("请输入7个字已下");

对输入的文本进行监听

   text.textProperty().addListener(new ChangeListener<String>(){


            @Override
            public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
               if(newValue.length()>7){ text.setText(oldValue);

               }
            }
        });

对光标进行监听

       text.selectedTextProperty().addListener(new ChangeListener<String>() {
            @Override
            public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
                System.out.println(newValue);

            }
        });

密码框

 PasswordField passwordField = new PasswordField();
        passwordField.setLayoutX(200);
        passwordField.setLayoutY(200);
        root.getChildren().add(passwordField);

添加标签

Label label = new Label("我是标签");
label.setLayoutX(200);
label.setLayoutY(200);
label.setFont(Font.font(14));
root.getChildren().add(label);

Hbox(水平布局)横着来得

  AnchorPane ap = new AnchorPane();



        Button b1 = new Button("btn1");
        Button b2 = new Button("b2");
        Button b3 = new Button("b3");
        ap.setStyle("-fx-background-color: #AEEEEE");
        HBox hBox = new HBox();
        hBox.setStyle("-fx-background-color: #E066FF");
        hBox.setPrefWidth(400);
        hBox.setPrefHeight(400);
        hBox.getChildren().addAll(b1,b2,b3);
        ap.getChildren().add(hBox);
        Scene scene = new Scene(ap);
        primaryStage.setScene(scene);
        primaryStage.setWidth(800);
        primaryStage.setHeight(800);
        primaryStage.show( );

vbox竖着来的

        Button b1 = new Button("btn1");
        Button b2 = new Button("b2");
        Button b3 = new Button("b3");
        ap.setStyle("-fx-backround-color: #AEEEEE");
        VBox hBox = new VBox();
        hBox.setStyle("-fx-background-color: #E066FF");
        hBox.setPrefWidth(400);
        hBox.setPrefHeight(400);
        hBox.getChildren().addAll(b1,b2,b3);
        ap.getChildren().add(hBox);
        Scene scene = new Scene(ap);
        primaryStage.setScene(scene);

        primaryStage.setWidth(800);
        primaryStage.setHeight(800);
        primaryStage.show( );

有很多位置设置

        hBox.setAlignment(Pos.CENTER_LEFT);