ImageView只显示循环中的最后一个图像(ImageView only showing last image in loop)

 你好，我正在做的是，我从客户端接收图像并在循环中显示它..数据被正确接收，但只有最后收到的图像显示循环结束时.. 
 
 这不是线程中的主控制器。 我不知道什么是错的，因为它正在接收数据，它应该在每次迭代时更新.... 
 
 这是代码： 
 
@FXML  ImageView currentframe;
public void run()
{
        System.out.println("hi controller");  
        System.out.println("creating socket");
        DatagramSocket serverSocket=null; 
        try {
            serverSocket = new  DatagramSocket(1001);
        } catch (SocketException ex) {
            Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println("created socket");

        byte[] receiveData = new byte[50000]; 

        //byte[] sendData  = new byte[1024]; 
        //BufferedImage img = null;
        //Image image = null;

        int counter = 0;

        while(counter<20){
            DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length); 
            try {  
                serverSocket.receive(receivePacket);
            } catch (IOException ex) {
                Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
            }
            //System.out.println("packetreceive");
            BufferedImage img = null;

            try {
                img = ImageIO.read(new ByteArrayInputStream(receivePacket.getData()));
            } catch (IOException ex) {
                Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
            }

            //System.out.println("packetreceive1");
            System.out.println("received packet length "+receivePacket.getLength());

            Image image= SwingFXUtils.toFXImage(img, null); 

            Image tempImg = image;

            Platform.runLater(() -> currentframe.setImage(tempImg));


            /*
            try {
                Thread.sleep(1000);
            } catch (InterruptedException ex) {
                Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
            }*/

            //currentframe.setImage(image);
            //threadclass t = new threadclass(currentframe, image);
            //t.start();

           //Platform.runLater(null);

            counter++;
            System.out.println("IMAGE SET ON FRAME...");
        }
        //System.out.println("ssdcd" );
        // currentframe.setImage(image);
        //System.out.println("last packet ");
}
 
 这里是我如何开始在控制器中的线程： 
 
@FXML
public void btn(ActionEvent event) throws IOException, InterruptedException
{
        threadclass t = new threadclass(currentframe);
        t.run();
    }

Hello this what i'm doing is that i'm receiving images from client and displaying it in the loop .. data is correctly received but only last received image is shown when loop finishes..
 
this is not the main controller this is in thread. I don't know whats wrong as it's receiving data and it should update on every iteration....
 
Here is code:
 
@FXML  ImageView currentframe;
public void run()
{
        System.out.println("hi controller");  
        System.out.println("creating socket");
        DatagramSocket serverSocket=null; 
        try {
            serverSocket = new  DatagramSocket(1001);
        } catch (SocketException ex) {
            Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println("created socket");

        byte[] receiveData = new byte[50000]; 

        //byte[] sendData  = new byte[1024]; 
        //BufferedImage img = null;
        //Image image = null;

        int counter = 0;

        while(counter<20){
            DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length); 
            try {  
                serverSocket.receive(receivePacket);
            } catch (IOException ex) {
                Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
            }
            //System.out.println("packetreceive");
            BufferedImage img = null;

            try {
                img = ImageIO.read(new ByteArrayInputStream(receivePacket.getData()));
            } catch (IOException ex) {
                Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
            }

            //System.out.println("packetreceive1");
            System.out.println("received packet length "+receivePacket.getLength());

            Image image= SwingFXUtils.toFXImage(img, null); 

            Image tempImg = image;

            Platform.runLater(() -> currentframe.setImage(tempImg));


            /*
            try {
                Thread.sleep(1000);
            } catch (InterruptedException ex) {
                Logger.getLogger(threadclass.class.getName()).log(Level.SEVERE, null, ex);
            }*/

            //currentframe.setImage(image);
            //threadclass t = new threadclass(currentframe, image);
            //t.start();

           //Platform.runLater(null);

            counter++;
            System.out.println("IMAGE SET ON FRAME...");
        }
        //System.out.println("ssdcd" );
        // currentframe.setImage(image);
        //System.out.println("last packet ");
}
 
here is how i'm starting thread in the controller:
 
@FXML
public void btn(ActionEvent event) throws IOException, InterruptedException
{
        threadclass t = new threadclass(currentframe);
        t.run();
    }

原文：https://stackoverflow.com/questions/47417877