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Mein Programm soll ein Bild sichtbar machen, wenn man eine Taste drückt (rbutton1), und ich soll setVisible(true) verwenden, aber ich habe Probleme, den Ereignishandler für die rbutton1 Arbeit zu machen.Wie verwendet man die .setVisible() Methode?
Die Methode public static ArrayList<Piece> read(String fileName) liest die Binärdatei.
package project4;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.control.RadioButton;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Pane;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javafx.util.Duration;
public class Project4 extends Application {
Body b;
Head head1, head2;
Hat hat1, hat2;
Weapon w1, w2, w3;
Companion c1, c2, c3;
@Override
public void start(Stage primaryStage) {
//fetch objects
ArrayList<Piece> pieces = read("pieces.dat");
//parent pane, one row only,
//contains Pane int he left column for images, and a grid pane in the right for controls
GridPane root = new GridPane();
//pane for images
Pane granny = new Pane();
root.add(granny, 0, 0);
//load images
for (Piece p : pieces) {
//only the body starts visible
if (p instanceof Body) {
granny.getChildren().add(((Body) p).image);
b = (Body) p;
} //everything else is added in the right place but is made invisible
else if (p instanceof Head) {
granny.getChildren().add(((Head) p).image);
if (head1 == null) {
head1 = (Head) p;
} else {
head2 = (Head) p;
}
} else if (p instanceof Hat) {
granny.getChildren().add(((Hat) p).image);
if (hat1 == null) {
hat1 = (Hat) p;
} else {
hat2 = (Hat) p;
}
} else if (p instanceof Weapon) {
granny.getChildren().add(((Weapon) p).image);
if (w1 == null) {
w1 = (Weapon) p;
} else if (w2 == null) {
w2 = (Weapon) p;
} else {
w3 = (Weapon) p;
}
} else if (p instanceof Companion) {
granny.getChildren().add(((Companion) p).image);
if (c1 == null) {
c1 = (Companion) p;
} else if (c2 == null) {
c2 = (Companion) p;
} else {
c3 = (Companion) p;
}
}
}
//controls pane
GridPane controls = new GridPane();
controls.setAlignment(Pos.TOP_CENTER);
controls.setPadding(new Insets(10, 10, 10, 10));
controls.setHgap(15);
controls.setVgap(15);
Label headLabel = new Label("Choose Head:");
RadioButton rbutton1 = new RadioButton("Esme with bees");
CheckBox check1 = new CheckBox("Face the other way");
RadioButton rbutton2 = new RadioButton("Esme normal");
CheckBox check2 = new CheckBox("Face the other way");
Label hatLabel = new Label("Choose Hat:");
RadioButton rbutton3 = new RadioButton("Disreputable hat");
RadioButton rbutton4 = new RadioButton("Hat with pins");
RadioButton rbutton5 = new RadioButton("No hat");
Label weaponLabel = new Label("Weapon:");
ComboBox< String> cbox = new ComboBox<>();
cbox.getItems().addAll(
"broom",
"scythe",
"stick"
);
Label companionLabel = new Label("Companion:");
ListView<String> clv = new ListView<>();
clv.getItems().addAll("DEATH of Rats", "Gaspode", "Luggage");
clv.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
clv.setPrefSize(2, 90);
Button exportButton = new Button("Export Character");
Label exportFileName = new Label("export.oscar.dat");
ToggleGroup group = new ToggleGroup();
rbutton1.setToggleGroup(group);
rbutton2.setToggleGroup(group);
ToggleGroup group2 = new ToggleGroup();
rbutton3.setToggleGroup(group2);
rbutton4.setToggleGroup(group2);
rbutton5.setToggleGroup(group2);
controls.add(headLabel, 1, 5);
controls.add(rbutton1, 2, 6);
controls.add(check1, 3, 6);
controls.add(rbutton2, 2, 7);
controls.add(check2, 3, 7);
controls.add(hatLabel, 1, 8);
controls.add(rbutton3, 2, 9);
controls.add(rbutton4, 2, 10);
controls.add(rbutton5, 2, 11);
controls.add(weaponLabel, 1, 13);
controls.add(cbox, 2, 14);
controls.add(companionLabel, 1, 15);
controls.add(clv, 2, 16);
controls.add(exportButton, 2, 17);
controls.add(exportFileName, 3, 17);
rbutton1.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
}
});
root.add(controls, 1, 0);
Scene scene = new Scene(root, 900, 700);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
/* read the file - Binary I/O
* input - String fileName
* returns ArrayList<Piece> of objects
*/
public static ArrayList<Piece> read(String fileName) {
ArrayList<Piece> pieces = new ArrayList<>();
//try with resources
try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(fileName))) {;
//flag should keep reading
boolean go = true;
//if the flag still gives the go ahead
while(go) {
//try to read
try{
//read, set the image dimensions and position, add to arraylist
Piece p = (Piece)in.readObject();
p.setImage();
pieces.add(p);
//if there is no more left to read, an IO exception will be thrown
} catch(IOException ex) {
//set the flag to signal end of file
go = false;
}
}
//neede dexception catches for this type of stream
} catch(IOException ioex) {
System.out.println("Input file is missing. " + ioex.getMessage());
System.exit(-1);
} catch (ClassNotFoundException cnfex) {
System.out.println("Incompatible class. ");
System.exit(-1);
}
//return the list with objects from the file
return pieces;
}