打开多个图像文件通过文件选择

Question

RootLayoutController.java

@FXML 
private void handleOpen(){ 
    FileChooser fileChooser = new FileChooser(); 

    //Set extension filter 
    ExtensionFilter extFilter = new FileChooser.ExtensionFilter("Image Files", "*.png","*.jpg", "*.jpeg"); 

    fileChooser.getExtensionFilters().add(extFilter); 

    // Show save file dialog 
    List<File> list = fileChooser.showOpenMultipleDialog(mainApp.getPrimaryStage()); 

    if(list != null){ 
     for(File file : list){ 
      imageView.createImageView(file); 
     } 
    } 
} 

ImageViewController.java

public ImageView createImageView(File file){ 
    imageView.getImage(); 
    String path = file.getAbsolutePath(); 
    try{ 
     final Image image; 

     image = new Image(new FileInputStream(file), 0, 0, true, true); 
     imageView = new ImageView(image); 
    }catch (IOException ex) { 
     ex.printStackTrace(); 
    } 
    return imageView; 
} 

试图创建一个图片库，但我可以不管我尝试什么，似乎都不打开图像文件，

SceneView的fx：id上的imageView容器在imageView上设置。

Answer 1

代码使用JavaFX

import java.awt.Desktop; 
import java.io.File; 
import java.io.IOException; 
import java.util.List; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javafx.application.Application; 
import javafx.event.ActionEvent; 
import javafx.event.EventHandler; 
import javafx.geometry.Insets; 
import javafx.scene.Scene; 
import javafx.scene.control.Button; 
import javafx.scene.layout.GridPane; 
import javafx.scene.layout.Pane; 
import javafx.scene.layout.VBox; 
import javafx.stage.FileChooser; 
import javafx.stage.Stage; 

public final class FileChooserSample extends Application { 

    private Desktop desktop = Desktop.getDesktop(); 

    @Override 
    public void start(final Stage stage) { 
     stage.setTitle("File Chooser Sample"); 

     final FileChooser fileChooser = new FileChooser(); 

     final Button openButton = new Button("Open a Picture..."); 
     final Button openMultipleButton = new Button("Open Pictures..."); 

     openButton.setOnAction(
      new EventHandler<ActionEvent>() { 
       @Override 
       public void handle(final ActionEvent e) { 
        File file = fileChooser.showOpenDialog(stage); 
        if (file != null) { 
         openFile(file); 
        } 
       } 
      }); 

     openMultipleButton.setOnAction(
      new EventHandler<ActionEvent>() { 
       @Override 
       public void handle(final ActionEvent e) { 
        List<File> list = 
         fileChooser.showOpenMultipleDialog(stage); 
        if (list != null) { 
         for (File file : list) { 
          openFile(file); 
         } 
        } 
       } 
      }); 


     final GridPane inputGridPane = new GridPane(); 

     GridPane.setConstraints(openButton, 0, 0); 
     GridPane.setConstraints(openMultipleButton, 1, 0); 
     inputGridPane.setHgap(6); 
     inputGridPane.setVgap(6); 
     inputGridPane.getChildren().addAll(openButton, openMultipleButton); 

     final Pane rootGroup = new VBox(12); 
     rootGroup.getChildren().addAll(inputGridPane); 
     rootGroup.setPadding(new Insets(12, 12, 12, 12)); 

     stage.setScene(new Scene(rootGroup)); 
     stage.show(); 
    } 

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

    private void openFile(File file) { 
     try { 
      desktop.open(file); 
     } catch (IOException ex) { 
      Logger.getLogger(
       FileChooserSample.class.getName()).log(
        Level.SEVERE, null, ex 
       ); 
     } 
    } 
} 

欲了解更多信息http://docs.oracle.com/javafx/2/ui_controls/file-chooser.htm