JavaFX zeige ImageView von anderen Klassenarray

Question

dort habe ich Minimal Code-Basis als passierbar gemacht, hoffe, es hilft als Beispiel können Sie zufällige PNG-Bilddateien verwenden, wie Sie in Klasse 2 in Konstruktor BufferedImage.getSubImage erhalten alle benötigten Bilder von nur 1 Datei und Hinzufügen jedes einzelne BufferedImage zu Image umgewandelt gibt es jedem Array bis zu 32 :)

Klasse 1:

import javafx.application.Application; 
import javafx.geometry.Pos; 
import javafx.scene.Parent; 
import javafx.scene.Scene; 
import javafx.scene.effect.DropShadow; 
import javafx.scene.effect.GaussianBlur; 
import javafx.scene.effect.Glow; 
import javafx.scene.layout.Pane; 
import javafx.scene.layout.StackPane; 
import javafx.scene.layout.VBox; 
import javafx.scene.paint.Color; 
import javafx.scene.shape.Rectangle; 
import javafx.scene.text.Text; 
import javafx.stage.Stage; 

public class Game extends Application{ 
private GameMenu gameMenu; 

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

    Pane root = new Pane(); 
    root.setPrefSize(1600,900); 
    primaryStage.setResizable(false); // resize okna = false 
    primaryStage.show(); // kebyze to nemame mame hnusne biele okraje xD 

    this.gameMenu = new GameMenu(); 
    this.gameMenu.setVisible(true); 

    root.getChildren().addAll(this.gameMenu); 

    Scene scene = new Scene(root); 
    primaryStage.setScene(scene); 
    primaryStage.show(); 


} // End start 

private class GameMenu extends Parent { 
    public GameMenu() throws Exception { 
     BalikKariet m = new BalikKariet(); 
     VBox menu0 = new VBox(15); 
     menu0.setTranslateX(650); 
     menu0.setTranslateY(300); 

     GameMenuCSS btn1 = new GameMenuCSS("Random Text"); 
     btn1.setOnMouseClicked(event -> { 
      getChildren().addAll(m.zoberKartu().getObrazok()); 
     }); 

     menu0.getChildren().addAll(btn1); 
     getChildren().addAll(menu0); 
    } // End Const. 



} // End GameMenu 

public static class GameMenuCSS extends StackPane { 
    private Text text; 

    public GameMenuCSS(String text) { 
     this.text = new Text(text); 
     this.text.setFont(this.text.getFont().font(20)); 
     this.text.setFill(Color.WHITE); 
     Rectangle bg = new Rectangle(250,30); 
     bg.setOpacity(0.6); 
     bg.setFill(Color.BLACK); 

     GaussianBlur blur = new GaussianBlur(3.5); 
     bg.setEffect(blur); 

     setAlignment(Pos.CENTER); 
     setRotate(-0.5); 
     getChildren().addAll(bg, this.text); 

     setOnMouseEntered(event -> { 
      bg.setTranslateX(10); 
      this.text.setTranslateX(10); 
      bg.setFill(Color.WHITE); 
      this.text.setFill(Color.BLACK); 
     }); 

     setOnMouseExited(event -> { 
      bg.setTranslateX(0); 
      this.text.setTranslateX(0); 
      bg.setFill(Color.BLACK); 
      this.text.setFill(Color.WHITE); 
     }); 

     DropShadow drop = new DropShadow(50, Color.WHITE); 
     drop.setInput(new Glow()); 

     setOnMousePressed(event -> setEffect(drop)); 
     setOnMouseReleased(event -> setEffect(null)); 

    } // koniec konstruktora 
} // koniec Triedy MenuPolosky 



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

} 
} 

Klasse 2:

package com.sayky.test; 

import javafx.embed.swing.SwingFXUtils; 
import javafx.scene.image.Image; 
import javafx.scene.image.ImageView; 

import javax.imageio.ImageIO; 
import java.awt.image.BufferedImage; 
import java.io.File; 
import java.io.IOException; 

public class BalikKariet { 
private Karta[] balik; 
private int dalsiaKarta; // index nasledujucej karty 
private ImageView imgViwVsetkyKarty; 
private ImageView tempImageViewObrazokKarty; 

public BalikKariet() throws IOException { 
    int[] hodnota = {7, 8, 9, 10, 11, 12, 13, 14}; 
    String[] typKariet = {"7","8","9","10","Dolek","Horek","Kral","Eso"}; 
    String[] farbay = {"Zelen","Cervem","Gula","Zalud"}; 

    balik = new Karta[32]; 
    dalsiaKarta = 0; 

    final int sirka = 74; 
    final int vyska = 120; 
    final int riadky = 4; 
    final int stlpec = 8; 

    BufferedImage vssetkyKartyObrazok = ImageIO.read(new  File("res/img/vsetkyKarty.png")); 
    Image imgVsetkyKarty = SwingFXUtils.toFXImage(vssetkyKartyObrazok, null); 
    imgViwVsetkyKarty = new ImageView(imgVsetkyKarty); 
    BufferedImage tempObrazokKarty; 


    for (int farba = 0; farba < 4 ; farba++){ 
     for (int typKarty = 0; typKarty < 8; typKarty++){ 
      //ukaz obrazok 
      tempObrazokKarty = vssetkyKartyObrazok.getSubimage(
        typKarty*sirka,  // zaciatok x suradnic 
        farba*vyska,  // zaciatok y sura dnic 
        sirka,    // sirka 
        vyska);    // vyska 
      balik[(typKarty + (farba*8))] = new Karta(
        farbay[farba],  // zavola Farby Array aby nadobudla meno Farba 
        typKariet[typKarty], 
        typKarty+7,   // pozicia 0+7 je 7 zacina na hodnote prvej karty 
        tempImageViewObrazokKarty); 
      Image tempImgObrazokKarty = SwingFXUtils.toFXImage(tempObrazokKarty, null); 
      tempImageViewObrazokKarty = new ImageView(tempImgObrazokKarty); 
     } 
    } 

} // koniec konstruktora 

public Karta zoberKartu(){ 
    if (dalsiaKarta< balik.length) { 
     return balik[dalsiaKarta++]; 
    } else { 
     return null; 
    } 
} 

} // koniec noble

Klasse 3:

package com.sayky.test; 

import javafx.scene.image.ImageView; 

public class Karta { 
private String typkarty; // cislo karty 
private String farba; // telo 
private int hodnota; // hodnota karty 
private ImageView kartaObrazok; 
/** 
* Konstruktor pre PexesovaKarta triedu bude obsahovat toto (pre lepsiu orientaciu) 
* @param farba -suit- "Zelen" "Cerven" "Gula" "Zalud" 
* @param typkarty -face- = 7, 8, 9, 10, Dolek, Horek, Kral, Eso; 
* @param hodnota = 7, 8, 9, 10, 11-dolek, 12-horek, 13-kral, 14-eso; 
*/ 
public Karta(String farba, String typkarty, int hodnota, ImageView kartaObrazok) { 
    // nastavenie hodnot lokalnich premien do globalnich 
    this.farba = farba; 
    this.typkarty = typkarty; 
    this.hodnota = hodnota; 
} 
public String toString(){ 
    return typkarty + " " + farba; 
} 

public int getHodnotaKarty(){ 
    return hodnota; 
} 
public Karta getKarta() { 
    return this; 
} 
public ImageView getObrazok() { 
    return kartaObrazok; 
} 
} 

Answer 1

Die Karta Klasse nie initialisiert das kartaObrazok Feld, so getObrazok() kehrt null.