package sample;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
import sun.security.provider.SHA;

/**
 * 相册
 */
public class PhotoAlbum extends Application {

 //图片资源文件
 String imageUrl[]={
 "resource/8a6aff91645a9ad78dc5433fc3a8f85a823c498b.jpg",
 "resource/2491e7013677c88a5b3170a2d5345106536c22b5.jpg",
 "resource/a1cf5dd198d541b0817a3180a4fe4e0c.jpg"
 };
 //当前在第几张
 int currentIndex=0;

 Image[] images=new Image[imageUrl.length];
 javafx.scene.image.ImageView imageView= new javafx.scene.image.ImageView();

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

 for (int i = 0; i < imageUrl.length; i++) {
 images[i]=new Image(imageUrl[i]);
 }


 BorderPane root = new BorderPane();
 Button button=new Button("下一张");
 button.setOnAction(new EventHandler<ActionEvent>() {
 @Override
 public void handle(ActionEvent event) {
 showNext();
 }
 });

 imageView.setPreserveRatio(true);

 root.setTop(button);
 root.setCenter(imageView);

 primaryStage.setTitle("相册");
 primaryStage.setScene(new Scene(root, 880, 400));
 primaryStage.show();

 showNext();
 }

 public void showNext(){
 if(currentIndex>=imageUrl.length){
 currentIndex=0;
 }
 imageView.setFitHeight(images[currentIndex].getHeight());
 imageView.setFitWidth(images[currentIndex].getWidth());
 imageView.setImage(images[currentIndex]);

 currentIndex++;
 }

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