ProgressBar javafx ile tegerring değil

Question

javafx kullanarak bir masaüstü uygulaması yapıyordum. benim fxml dosyasıdır: - indirme düğmesi için

<?import java.lang.String?> 
<?import javafx.collections.FXCollections?> 
<?import javafx.geometry.Insets?> 
<?import javafx.scene.control.Button?> 
<?import javafx.scene.control.ComboBox?> 
<?import javafx.scene.control.ProgressBar?> 
<?import javafx.scene.control.TableColumn?> 
<?import javafx.scene.control.TableView?> 
<?import javafx.scene.layout.AnchorPane?> 
<?import javafx.scene.layout.HBox?> 

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="ch.Buildsapp.Main.BuildsController" fx:id="ap"> 
<children> 
    <HBox alignment="CENTER_LEFT" layoutX="6.0" layoutY="14.0" spacing="20.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0"> 
    <children> 
      <ComboBox fx:id="versionCombo" prefHeight="31.0" prefWidth="108.0" promptText="7.0 Win"> 
      <items> 
      <FXCollections fx:factory="observableArrayList"> 
      <String fx:value="Win" /> 
      <String fx:value="Mac" /> 
      </FXCollections> 
     </items> 
       <value> 
      <String fx:value="Win" /> 
     </value> 
      </ComboBox> 
     <ComboBox fx:id="versionNo" prefHeight="31.0" prefWidth="89.0" promptText="7.0" /> 
      <Button fx:id="downloadButton" minWidth="80.0" mnemonicParsing="false" text="Download" /> 
      <Button fx:id="installButton" minWidth="80.0" mnemonicParsing="false" text="Install" /> 
     <ComboBox fx:id="locCombo" prefHeight="31.0" prefWidth="103.0"> 
     <items> 
      <FXCollections fx:factory="observableArrayList"> 
      <String fx:value="CJ" /> 
      <String fx:value="MN" /> 
      </FXCollections> 
     </items> 
     <value> 
      <String fx:value="CJ" /> 
     </value> 
     </ComboBox> 
      <ProgressBar fx:id="progressBar1" prefHeight="23.0" prefWidth="102.0" progress="0.0" /> 
    </children> 
    <padding> 
     <Insets left="10.0" right="3.0" top="5.0" /> 
    </padding> 
    </HBox> 
    <TableView fx:id="tableView" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="2.0" AnchorPane.rightAnchor="2.0" AnchorPane.topAnchor="40.0"> 
     <columns> 
      <TableColumn fx:id="builds" prefWidth="482.0" text="Builds" /> 
      <TableColumn fx:id="date" minWidth="0.0" prefWidth="124.0" text="Date" /> 
      <TableColumn fx:id="release" prefWidth="168.0" text="Release" /> 
     </columns> 
    </TableView> 

</children> 
</AnchorPane> 

benim denetleyicisi sınıftır: - aşağıdaki gibi

downloadButton.setOnMouseClicked(new EventHandler<MouseEvent>() { 

    @Override 
    public void handle(MouseEvent event) { 
     download(); 
    } 

}); 

indirme yöntemidir.

private void download() { 
    FTPClient ftpClient = new FTPConnection().makeConnection(loc); 

    try { 
     ftpClient.setFileType(FTP.BINARY_FILE_TYPE); 
     success = ftpClient.changeWorkingDirectory(PATH + preset + "/" + file_to_download + offset); 
     System.out.println("Download Path:-" + PATH + preset + "/" + file_to_download + offset); 
     if (!success) { 
      System.out.println("Could not changed the directory to RIBS"); 
      return; 
     } else { 
      System.out.println("Directory changed to RIBS"); 
     } 
     FTPFile[] files = ftpClient.listFiles(); 
     for (FTPFile file : files) { 
      if (file.getName().contains(".zip")) { 
       dfile = file.getName(); 
      } 

     } 
     fileMap.put("build", dfile); 
     primaryStage = (Stage) ap.getScene().getWindow(); 

     String homePath = System.getProperty("user.home"); 
     File downloadPath = new File(homePath + "\\LightroomBuildss\\" + osVer); 
     if (!downloadPath.exists()) { 
      if (downloadPath.mkdirs()) { 
       System.out.println("Directory is created!"); 
      } else { 
       System.out.println("Failed to create directory!"); 
      } 
     } 
     // System.out.println(chosenDir.getAbsolutePath()); 
     filePath = new File(downloadPath + "/" + dfile); 
     if (filePath.exists()) { 
      System.out.println("File altready exist"); 
      return; 
     } else { 
      fileMap.put("path", filePath.toString()); 
      fileMap.put("kind", "RIBS"); 
      Task task = new Task<Void>() { 
       @Override 
       public Void call() throws IOException { 
        try { 
         output = new FileOutputStream(downloadPath + "/" + dfile); 
        } catch (FileNotFoundException e) { 
         // TODO Auto-generated catch block 
         e.printStackTrace(); 
        } 
        ftpClient.sendNoOp(); 
        ftpClient.setConnectTimeout(1000); 

        Task<Void> sleeper = new Task<Void>() { 
         @Override 
         protected Void call() throws Exception { 
          try { 
           for (double progress = 0.0; progress < 100.0; progress++) { 
            Thread.sleep(100); 
            updateProgress(progress, 100); 
            System.out.println(progress); 
           } 
          } catch (InterruptedException e) { 
          } 
          return null; 
         } 
        }; 
        ProgressBar slider = startProgressBar(); 
        slider.progressProperty().bind(sleeper.progressProperty()); 
        Thread thread = new Thread(sleeper); 
        thread.start(); 
        if (ftpClient.retrieveFile(dfile, output) == true) { 
         downloadButton.setDisable(true); 

         outsize = dfile.length(); 
        } 
        return null; 
       } 
      }; 
      Thread t = new Thread(task); 
      t.start(); 

     } 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } finally { 
     if (output != null) { 
      try { 
       output.close(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
     } 
    } 
} 

benim ilerleme çubuğu kodu: -

public ProgressBar startProgressBar() { 
    Stage primaryStage = new Stage(); 
    ProgressBar pb = new ProgressBar(0); 
    ProgressIndicator pi = new ProgressIndicator(0); 
    pi.progressProperty().bind(pb.progressProperty()); 
    HBox hb = new HBox(); 
    hb.setSpacing(5); 
    hb.setAlignment(Pos.CENTER); 
    hb.getChildren().addAll(pb, pi); 
    Scene scene = new Scene(hb, 300, 100); 
    primaryStage.setScene(scene); 
    primaryStage.show(); 
    return pb; 
    } 

indirme başlar ama yöntemi çağrıldıktan sonra ilerleme çubuğu başlayıp gelmez önce indirme yönteminde gelen startProgessBar yöntemini arıyorum Yöntem çağrısından sonra yazılan kod (bu durumda indirme düğmesinin devre dışı bırakılması), dosyalar gerekli klasöre indirilse de idam edilmez. StartProgressBar yöntemi, düzgün çalıştıktan sonra kod çağrılmıyorsa.

Answer 1

Bazı yanlış şeyler var. Öncelikle, görev içindeki ilerleme göstergelerinin pencere kurulumunu yapma. Ayarlayın, ardından görevi tanımlayın ve çalıştırın.

Görev ilerlemesi ile ekran arasında herhangi bir bağlantı göremiyorum.

Kaydırıcı değerini değerine göre değiştirmekProperty, ekranda güncelleme yapmıyor gibi görünüyor. Bağlama yoluyla doğrudan ProgressBar'a bağlanmak daha iyidir.

public class SampleTask extends Application { 

private BorderPane testPane; 

class TestPane extends BorderPane { 

    public TestPane() { 
     Button button = new Button("Click Here"); 
     setCenter(button); 
     button.setOnAction(evt -> { 
      Task<Void> sleeper = new Task<Void>() { 
       @Override 
       protected Void call() throws Exception { 
        try { 
         for (double progress = 0.0; progress < 100.0; progress++) { 
          Thread.sleep(100); 
          updateProgress(progress, 100); 
          System.out.println(progress); 
         } 
        } catch (InterruptedException e) { 
        } 
        return null; 
       } 
      }; 
      ProgressBar slider = startProgressBar(); 
      slider.progressProperty().bind(sleeper.progressProperty()); 
      Thread thread = new Thread(sleeper); 
      thread.start(); 
     }); 
    } 
} 

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

@Override 
public void start(Stage primaryStage) { 
    primaryStage.setTitle("Task Progress Tester"); 
    testPane = new TestPane(); 
    primaryStage.setScene(new Scene(testPane, 300, 250)); 
    primaryStage.show(); 
} 

public ProgressBar startProgressBar() { 
    Stage primaryStage = new Stage(); 
    ProgressBar pb = new ProgressBar(0); 
    ProgressIndicator pi = new ProgressIndicator(0); 
    pi.progressProperty().bind(pb.progressProperty()); 
    HBox hb = new HBox(); 
    hb.setSpacing(5); 
    hb.setAlignment(Pos.CENTER); 
    hb.getChildren().addAll(pb, pi); 
    Scene scene = new Scene(hb, 300, 100); 
    primaryStage.setScene(scene); 
    primaryStage.show(); 
    return pb; 
} 

}

Answer 2

Bunları kontrol edin. Ayrıca

primaryStage=//this is global 
primaryStage= (Stage) ap.getScene().getWindow();//why do this? 
//i guess its simply primaryStage = primaryStage 

da

Scene scene = new Scene(root);//scene already has a root 
scene.setRoot(hb);//why do this? 
//if you do not need the Group, why set it to your scene 

(Stage) ap.getScene().getWindow();//this a.k.a primaryStage is already shown 
primaryStage.show();//this isn't needed as your last line. 

Bunlar yukarıda olsa sorununuzu çözmez, ancak bu yukarıda

startProggressBar(); 
if (ftpClient.retrieveFile(dfile, output) == true) { 
     downloadButton.setDisable(true);//this guy is an orphan. 
     outsize = dfile.length(); 
} 
//when startProggressBar(); is done your primaryStage's Scene is changed 

Umut yardımıyla yapar faydalı