输入框，标签
public class 输入框标签 extends Application {
@Override
public void start(Stage primaryStage) throws Exception {
// Button b1=new Button("按钮B1");
// b1.setLayoutX(100);
// b1.setLayoutY(100);
// b1.setPrefWidth(100);
// b1.setPrefHeight(50);
Group group=new Group();
Scene scene=new Scene(group);
primaryStage.setScene(scene);
primaryStage.setTitle("JavaFX");
primaryStage.setWidth(800);
primaryStage.setHeight(800);
TextField textField=new TextField();
// textField.setText("这是文本");
textField.setLayoutX(100);
textField.setLayoutY(100);
//设置提示
textField.setTooltip(new Tooltip("提示信息"));
//设置未输入时候的显示文字,必须没有焦点才显示出来(和html不同)
textField.setPromptText("请输入姓名");
//去除输入框默认焦点
textField.setFocusTraversable(false);
//限制输入长度
textField.textProperty().addListener((observable, oldValue, newValue) -> {
if (newValue.length() > 7) {
textField.setText(oldValue);
}
});
//选中文字的监听
textField.selectedTextProperty().addListener((observable, oldValue, newValue) -> {
});
//密码框
PasswordField passwordField=new PasswordField();
passwordField.setLayoutX(200);
passwordField.setLayoutY(200);
//标签控件
Label label=new Label("我是标签");
//单击
label.setOnMouseClicked(event -> System.out.println("标签被点击"));
//而且即使没有setOnMouseClicked这种事件，也可以通过addEventHandler/filter实现
group.getChildren().addAll(textField,passwordField,label);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
AnchorPane布局类
案例一
public class AnchorPane布局类 extends Application{
@Override
public void start(Stage primaryStage) throws Exception {
Button btn1=new Button("btn1");
Button btn2=new Button("btn2");
//一旦使用AnchorPane接管布局，则此时内部使用按钮本身设置位置就无效了
AnchorPane anchorPane=new AnchorPane();
// anchorPane.setLayoutX(10 );
//设置内边距
anchorPane.setPadding(new Insets(10));
//同理：可以button放在group中，然后AnchorPane管理group
AnchorPane.setTopAnchor(btn1,0.0);
AnchorPane.setLeftAnchor(btn1,10.0);
AnchorPane.setTopAnchor(btn2,100.0);
AnchorPane.setLeftAnchor(btn2,100.0);
anchorPane.getChildren().addAll(btn1,btn2);
anchorPane.setStyle(" -fx-background-color: aqua;");
anchorPane.setOnMouseClicked(event -> {
});
// Group group=new Group();
Scene scene=new Scene(anchorPane);
primaryStage.setScene(scene);
primaryStage.setTitle("JavaFX");
primaryStage.setWidth(800);
primaryStage.setHeight(800);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
案例二
public class AnchorPane布局类二 extends Application{
@Override
public void start(Stage primaryStage) throws Exception {
Button b1=new Button("按钮");
//告知：b1脱离父容器管理并且在这个位置上消失,这样在anchorPane1右下角就没有b1按钮了
// b1.setManaged(false);但是打印父级的子元素个数，仍然包含这个脱离管理的元素
// b1.setVisible(true);代表看不见，但是没脱离管理，且位置还有
// b1.setOpacity(1);设置透明度
AnchorPane anchorPane=new AnchorPane();
AnchorPane anchorPane1=new AnchorPane();
anchorPane1.setStyle("-fx-background-color: red;");
anchorPane1.getChildren().add(b1);
AnchorPane.setBottomAnchor(b1,0.0);
AnchorPane.setRightAnchor(b1,0.0);
//设置内边距
// anchorPane.setPadding(new Insets(10));
anchorPane.getChildren().addAll(anchorPane1);
anchorPane.setStyle(" -fx-background-color: aqua;");
Scene scene=new Scene(anchorPane);
primaryStage.setScene(scene);
primaryStage.setTitle("JavaFX");
primaryStage.setWidth(800);
primaryStage.setHeight(800);
primaryStage.show();
//此种方式，此时必须放在show后面，因为默认值的宽高无法获取，必须显示之后才行
AnchorPane.setTopAnchor(anchorPane1,0.0);
AnchorPane.setLeftAnchor(anchorPane1,0.0);
AnchorPane.setBottomAnchor(anchorPane1,anchorPane.getHeight()/2);
AnchorPane.setRightAnchor(anchorPane1,anchorPane.getWidth()/2);
primaryStage.heightProperty().addListener((observable, oldValue, newValue) -> {
//此时不能使用newvalue的值，因为包含边框和顶部栏等
AnchorPane.setBottomAnchor(anchorPane1,anchorPane.getHeight()/2);
});
primaryStage.widthProperty().addListener((observable, oldValue, newValue) -> {
AnchorPane.setRightAnchor(anchorPane1,anchorPane.getWidth()/2);
});
}
public static void main(String[] args) {
launch(args);
}
}
水平和垂直布局
public class HBox和VBox extends Application {
@Override
public void start(Stage primaryStage) throws Exception {
Button b1=new Button("b1");
Button b2=new Button("b2");
Button b3=new Button("b3");
Button b4=new Button("b4");
HBox hBox=new HBox();//水平布局
hBox.setStyle("-fx-background-color: aliceblue;");
hBox.setPrefHeight(300);
hBox.setPrefWidth(300);
//内边距
hBox.setPadding(new Insets(10));
//内部元素的间距
hBox.setSpacing(10.0);
//设置外边距,针对内部元素，挨个处理
HBox.setMargin(b1,new Insets(10));
//对齐方式,如果设置了，则以这个为准，而之前设置的其他属性可能无效
hBox.setAlignment(Pos.BOTTOM_CENTER);
hBox.getChildren().addAll(b1,b2);
VBox vBox=new VBox();
vBox.setStyle("-fx-background-color: antiquewhite;");
vBox.setPrefHeight(300);
vBox.setPrefWidth(300);
vBox.getChildren().addAll(b3,b4);
AnchorPane anchorPane=new AnchorPane();
anchorPane.setStyle("-fx-background-color: aqua;");
anchorPane.getChildren().addAll(hBox,vBox);
AnchorPane.setLeftAnchor(vBox,305.0);
Scene scene=new Scene(anchorPane);
primaryStage.setScene(scene);
primaryStage.setTitle("JavaFX");
primaryStage.setWidth(800);
primaryStage.setHeight(800);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
