Question

我正在尝试使用java fx进行简单的幻灯片放映。我正在实现允许我按下按钮后显示一个图像的方法，直到列表结束。现在我有一个像这样的代码......它有效，但它显示图像太快我不知道为什么。也许有人可以帮助我告诉我如何减慢这个时间线变量或timer.thanks提前：

package pl.gallery.controller;

import java.io.File;
import java.net.URL;
import java.util.ResourceBundle;

import javafx.animation.AnimationTimer;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.stage.DirectoryChooser;
import javafx.stage.Stage;
import javafx.util.Duration;
import pl.gallery.model.ImageParser;

public class MainPaneController implements Initializable {

@FXML
private BorderPane borderPane;

@FXML
private Button nextButton;

@FXML
private MenuBar menuBar;

@FXML
private AnchorPane anchorPaneTop;

@FXML
private HBox hBox;

@FXML
private Button previousButton;

@FXML
private MenuItem openFolder;

@FXML
private AnchorPane anchorPaneCenter;

@FXML
private ImageView imageView;

@FXML
private Button slideShowButton;

@FXML
private Menu menu;

private Image image;

private ImageParser parser;

private ObservableList<Image> imagesList;
private int indexPrev = 0;
private int indexNext = 0;
private Timeline timeline;
private AnimationTimer timer;

//variable for storing actual frame
private Integer i=0;
@Override
public void initialize(URL location, ResourceBundle resources)
        throws IndexOutOfBoundsException {
    parser = new ImageParser();
    imagesList = FXCollections.observableArrayList();
    DirectoryChooser dc = new DirectoryChooser();

    openFolder.setOnAction(new EventHandler<ActionEvent>() {

        @Override
        public void handle(ActionEvent event) {
            /*
             * parser = new ImageParser(); imagesList = new
             * ArrayList<Image>(); DirectoryChooser dc = new
             * DirectoryChooser(); File dir = dc.showDialog(new Stage());
             * parser.createFileList(dir);
             * 
             * 
             * imagesList.add(new Image(parser.getFilesList().get(0)
             * .toURI().toString())); imageView.setImage(imagesList.get(0));
             */

            File dir = dc.showDialog(new Stage());
            imagesList = parser.createImagesListFromFileList(dir);
            imageView.setImage(imagesList.get(0));

        }
    });


    slideShowButton.setOnAction(new EventHandler<ActionEvent>() {

        @Override
        public void handle(ActionEvent event) {


            timeline = new Timeline();
            timeline.setCycleCount(Timeline.INDEFINITE);
            timeline.setAutoReverse(true);
            Duration duration = new Duration(1000);
            timeline.setDelay(duration);
            timer = new AnimationTimer() {
                @Override
                public void handle(long l) {
                    imageView.setImage(imagesList.get(i));

                    i++;
                }

            };
            timeline.play();
            timer.start();
             }
    });
}


}

java fx imageslideshow使用动画

0 个答案: