我正在制作一個 JavaFX 應用程序。我在主窗口中有一個標簽。我有一個從字母表生成隨機字符的方法，但我想給它添加一些動畫。我的意思是在 2 秒內在標簽中旋轉字符，然后出現一些隨機字符。動畫就像在真正的老虎機中一樣。我沒有找到任何這樣的圖書館我怎樣才能做到這一點？@FXML private Label answerID;//generate random character and apply it to the labelprivate void generateChar() {Random r = new Random();String alphabet = "ABCDEFGHIKLMNOPQRSTUXYZ";for (int i = 0; i < 25; i++) { String text = "" + alphabet.charAt(r.nextInt(alphabet.length())); answerID.setText(text); } }
1 回答
慕姐4208626
TA貢獻1852條經驗 獲得超7個贊
一個基本的設置可以包括一個Slot代表一個槽，由一個Text被扭曲的節點組成StackPane。
ASlot可以對 應用動畫Text并為其設置一個隨機字母。
ATilePane包含所有插槽，因此所有插槽都具有相同的大?。?/p>
import java.util.Random;
import javafx.animation.Interpolator;
import javafx.animation.SequentialTransition;
import javafx.animation.TranslateTransition;
import javafx.application.Application;
import javafx.geometry.Orientation;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.TilePane;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javafx.util.Duration;
public class FxTest extends Application {
public static final String ALFA_BET = "ABCDEFGHIKLMNOPQRSTUXYZ";
private final Random rnd = new Random();
private TilePane main;
@Override
public void start(Stage primaryStage)throws Exception{
main = new TilePane(); //use tile pane: all tiles have same size
main.setPrefColumns(ALFA_BET.length());
main.setOrientation(Orientation.HORIZONTAL);
main.setHgap(1); main.setVgap(10); //vertical and horizontal space
makeSlots();
Button add = new Button("Spin");
add.setOnAction(e -> spin());
BorderPane root = new BorderPane(main);
root.setBottom(add);
Scene scene = new Scene(root);
primaryStage.setScene(scene);
//primaryStage.sizeToScene();
primaryStage.show();
}
private void spin() {
for(Node node : main.getChildren()){
((Slot)node).spin();
}
}
private void makeSlots() {
for (int i=0; i< ALFA_BET.length(); i++){
main.getChildren().add(new Slot());
}
}
public static void main(String[] args) {
launch(null);
}
class Slot extends StackPane{
private final Text text;
private static final String format = "%1S";
private static final double WIDTH = 30, TRANS_SIZE = 30;
private SequentialTransition animation;
Slot(){
text = new Text();
setRandomText();
getChildren().add(text);
setPrefWidth(WIDTH);
//better apply using css
setStyle("-fx-padding: 5;" +
"-fx-border-style: solid inside;" +
"-fx-border-width: 2;" +
"-fx-border-insets: 5;" +
"-fx-border-radius: 5;" +
"-fx-border-color: blue;"+
//all letters have the same width
"-fx-font-family: 'monospaced';");
initializeAnimation();
}
//define animation to be applied to text
private void initializeAnimation() {
TranslateTransition t1 = new TranslateTransition();
t1.setDuration(Duration.millis(1));
t1.setNode(text);
t1.setFromX(0);
t1.setFromY(0);
t1.setToX(0);
t1.setToY(TRANS_SIZE);
t1.setInterpolator(Interpolator.LINEAR);
TranslateTransition t2 = new TranslateTransition();
t2.setDuration(Duration.millis(300));
t2.setNode(text);
t2.setFromX(0);
t2.setFromY(-TRANS_SIZE);
t2.setToX(0);
t2.setToY(TRANS_SIZE);
t2.setInterpolator(Interpolator.LINEAR);
TranslateTransition t3 = new TranslateTransition();
t3.setDuration(Duration.millis(1));
t3.setNode(text);
t3.setFromX(0);
t3.setFromY(TRANS_SIZE);
t3.setToX(0);
t3.setToY(0);
t3.setInterpolator(Interpolator.LINEAR);
//to play animations one by one
animation = new SequentialTransition(t1, t2, t3);
}
void spin() {
animation.play(); //animate
animation.setOnFinished(e-> setRandomText()); //change letter whaen animation ends
}
void setRandomText(){
char letter = ALFA_BET.charAt(rnd.nextInt(ALFA_BET.length()));
setText(letter );
}
void setText(char c){
text.setText(String.format(format, c) );
}
}
}
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