javaFX:部分知识点(二)

随便写写

1.启动方式与生命周期

第一种

public class Main1 extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.show();
    }
}

第二种

public class Main1 extends Application {

    public static void main(String[] args) {
        launch(Main1.class,args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.show();
    }
}

第三种

public class Launch extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.show();
    }
}

public class Main1  {
    public static void main(String[] args) {
        Application.launch(Launch.class,args);
    }

}

生命周期：

public class Main2 extends Application {

    public static void main(String[] args) {
        System.out.println("main excute..."+Thread.currentThread().getName());
        launch(args);
    }

    //子类里直接输入父类方法，即可重写出来
    @Override
    public void init() throws Exception {
        System.out.println("init excute..."+Thread.currentThread().getName());
    }

    @Override
    public void stop() throws Exception {
        //当关闭窗口时，会触发
        System.out.println("stop excute..."+Thread.currentThread().getName());
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        System.out.println("start excute..."+Thread.currentThread().getName());
        primaryStage.show();
    }
}

2.窗口

    <build>
        <resources>
            <resource>
                <directory>src/main/javadirectory>
                <includes>
                    <include>**/*.propertiesinclude>
                    <include>**/*.xmlinclude>
                includes>
                <filtering>truefiltering>
            resource>
            
            <resource>
                <directory>src/main/resourcesdirectory>
                <includes>
                    
                    
                    <include>**/*include>
                includes>
                <filtering>truefiltering>
            resource>
        resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.pluginsgroupId>
                <artifactId>maven-compiler-pluginartifactId>
                <configuration>
                    <source>1.8source>
                    <target>1.8target>
                configuration>
            plugin>
        plugins>
    build>

public class Main3 extends Application {

    @Override
    public void start(Stage primaryStage) {

        Text text = new Text("JavaFX 8 Hello World");
        text.setX(50);
        text.setY(50);

        Group group = new Group();
        group.getChildren().add(text);

        // Set the Layout Pane of Scene
        Scene scene = new Scene(group);
        // Set the title of Stage
        primaryStage.setTitle("JavaFX 8 Hello World");
        // Set the width of Stage
        primaryStage.setWidth(400);
        // Set the height of Stage
        primaryStage.setHeight(300);
        //必须要设置scene，不然窗口大小变化的时候，场景不会跟着窗口变化，会出现黑色区域
        primaryStage.setScene(scene);
        //禁止窗口大小拉伸变化
//        primaryStage.setResizable(false);

        primaryStage.getIcons().add(new Image("image/sun.png"));

        primaryStage.heightProperty().addListener(new ChangeListener<Number>() {
            @Override
            public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
                System.out.println("newValue = " + newValue.doubleValue());
            }
        });

        // Show Stage
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

模式：

public class Main3_1 extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {

        //可以自定义窗口
        Stage s1 = new Stage();
        s1.setTitle("s1");
        //设置模式
        s1.initStyle(StageStyle.DECORATED);
        s1.show();
        Stage s2 = new Stage();
        //必须s2操作完，才能操作s1
        s2.initOwner(s1);
        s2.initModality(Modality.WINDOW_MODAL);
        s2.setTitle("s2");
        s2.show();
        
    }

}

3.Platform类

public class Main4 extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {

        System.out.println("start = " + Thread.currentThread().getName());

        Platform.runLater(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 3 ; i++) {
                    try {
                        Thread.sleep(2000);
                        System.out.println("Platform = "+ i +" "+ Thread.currentThread().getName());
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }

                }
            }
        });
        primaryStage.setWidth(150);
        primaryStage.setHeight(100);
        primaryStage.show();
    }

}

4.Screen 获取屏幕信息

    @Override
    public void start(Stage primaryStage) throws Exception {

        Screen screen = Screen.getPrimary();
        Rectangle2D bounds = screen.getBounds();
        Rectangle2D visualBounds = screen.getVisualBounds();
        System.out.println("左上角X："+bounds.getMinX() + "左上角Y："+bounds.getMinY());
        System.out.println("右下角X："+bounds.getMaxX() + "右下角Y："+bounds.getMaxY());


    }

关系：
stage里必须要放入一个scene，scene里必须要放入一个组件node，一般是放入布局而不是某个具体组件

public class Main5_1 extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {

        URL url = getClass().getClassLoader().getResource("image/sun.png");
        String path = url.toExternalForm();

        Button button = new Button("按钮");
        button.setCursor(Cursor.MOVE);
        button.setPrefWidth(50);
        button.setPrefHeight(30);

        //1.添加分组布局
        Group group = new Group();
        group.getChildren().add(button);

        //2.添加到场景
        Scene scene = new Scene(group);
        //鼠标形状改变
        scene.setCursor(Cursor.cursor(path));
        
        //3.添加到窗口
        primaryStage.setScene(scene);

        primaryStage.setHeight(200);
        primaryStage.setWidth(200);
        primaryStage.show();

    }

}

5.group容器

group不是布局，而是一个容器

6.按钮

样式设置有两种，如下：

        Button button = new Button("按钮");
        button.setCursor(Cursor.MOVE);
        button.setPrefWidth(100);
        button.setPrefHeight(60);

        //方式一
        BackgroundFill bgf = new BackgroundFill(Paint.valueOf("#7CCD7C"), new CornerRadii(20), Insets.EMPTY);
        Background bg = new Background(bgf);
        button.setBackground(bg);

        //方式二
        button.setStyle("-fx-background-color: #7CCD7C;" +
                "-fx-background-radius: 20;");

CSS

7. 布局

JAVAFX - Layout Pane 布局详解
Lesson13 AnchorPane布局类
学习JavaFX（一）：初步认识GUI设计
JavaFX 布局——FlowPane