JavaFX Image cancel background loading












1















In short; Is there a way to cancel / clear the background loading for JavaFX Images?



At one point in my code, I load a bunch of images. For performance reasons those are being loaded in the background with



public Image(String url, boolean backgroundLoading)


from the Images class.



The problem is that sometimes, user interaction causes the program to update the list of images (and not needing the previous ones) before loading of the previous ones is finished. At that point I'd like to cancel the background loading of the previous ones. Right now, it still loads the previous ones, causing longer loading time for the images actually needed.



See example below. When I get a new stream of sources before the old one is finished processing, it takes longer for the content to start displaying the images because it still is loading the previous ones (at least that's my guess).



List<ImageView> images = sources.map(source -> {
ImageView iv = new ImageView(new Image(source.toUri().toString(), true));
iv.setPreserveRatio(true);
return iv;
}).collect(Collectors.toList());
content.getChildren().setAll(images);









share|improve this question



























    1















    In short; Is there a way to cancel / clear the background loading for JavaFX Images?



    At one point in my code, I load a bunch of images. For performance reasons those are being loaded in the background with



    public Image(String url, boolean backgroundLoading)


    from the Images class.



    The problem is that sometimes, user interaction causes the program to update the list of images (and not needing the previous ones) before loading of the previous ones is finished. At that point I'd like to cancel the background loading of the previous ones. Right now, it still loads the previous ones, causing longer loading time for the images actually needed.



    See example below. When I get a new stream of sources before the old one is finished processing, it takes longer for the content to start displaying the images because it still is loading the previous ones (at least that's my guess).



    List<ImageView> images = sources.map(source -> {
    ImageView iv = new ImageView(new Image(source.toUri().toString(), true));
    iv.setPreserveRatio(true);
    return iv;
    }).collect(Collectors.toList());
    content.getChildren().setAll(images);









    share|improve this question

























      1












      1








      1








      In short; Is there a way to cancel / clear the background loading for JavaFX Images?



      At one point in my code, I load a bunch of images. For performance reasons those are being loaded in the background with



      public Image(String url, boolean backgroundLoading)


      from the Images class.



      The problem is that sometimes, user interaction causes the program to update the list of images (and not needing the previous ones) before loading of the previous ones is finished. At that point I'd like to cancel the background loading of the previous ones. Right now, it still loads the previous ones, causing longer loading time for the images actually needed.



      See example below. When I get a new stream of sources before the old one is finished processing, it takes longer for the content to start displaying the images because it still is loading the previous ones (at least that's my guess).



      List<ImageView> images = sources.map(source -> {
      ImageView iv = new ImageView(new Image(source.toUri().toString(), true));
      iv.setPreserveRatio(true);
      return iv;
      }).collect(Collectors.toList());
      content.getChildren().setAll(images);









      share|improve this question














      In short; Is there a way to cancel / clear the background loading for JavaFX Images?



      At one point in my code, I load a bunch of images. For performance reasons those are being loaded in the background with



      public Image(String url, boolean backgroundLoading)


      from the Images class.



      The problem is that sometimes, user interaction causes the program to update the list of images (and not needing the previous ones) before loading of the previous ones is finished. At that point I'd like to cancel the background loading of the previous ones. Right now, it still loads the previous ones, causing longer loading time for the images actually needed.



      See example below. When I get a new stream of sources before the old one is finished processing, it takes longer for the content to start displaying the images because it still is loading the previous ones (at least that's my guess).



      List<ImageView> images = sources.map(source -> {
      ImageView iv = new ImageView(new Image(source.toUri().toString(), true));
      iv.setPreserveRatio(true);
      return iv;
      }).collect(Collectors.toList());
      content.getChildren().setAll(images);






      java image javafx loading






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      asked Dec 29 '18 at 15:45









      nevermindnevermind

      119314




      119314
























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          You can cancel the background loading of an Image with Image.cancel.




          Cancels the background loading of this image.



          Has no effect if this image isn't loaded in background or if loading has already completed.







          share|improve this answer
























          • Oh wow. Shame on me for not finding that myself. Thanks.

            – nevermind
            Dec 29 '18 at 16:29











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          1 Answer
          1






          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          You can cancel the background loading of an Image with Image.cancel.




          Cancels the background loading of this image.



          Has no effect if this image isn't loaded in background or if loading has already completed.







          share|improve this answer
























          • Oh wow. Shame on me for not finding that myself. Thanks.

            – nevermind
            Dec 29 '18 at 16:29
















          2














          You can cancel the background loading of an Image with Image.cancel.




          Cancels the background loading of this image.



          Has no effect if this image isn't loaded in background or if loading has already completed.







          share|improve this answer
























          • Oh wow. Shame on me for not finding that myself. Thanks.

            – nevermind
            Dec 29 '18 at 16:29














          2












          2








          2







          You can cancel the background loading of an Image with Image.cancel.




          Cancels the background loading of this image.



          Has no effect if this image isn't loaded in background or if loading has already completed.







          share|improve this answer













          You can cancel the background loading of an Image with Image.cancel.




          Cancels the background loading of this image.



          Has no effect if this image isn't loaded in background or if loading has already completed.








          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Dec 29 '18 at 16:21









          SlawSlaw

          7,6083932




          7,6083932













          • Oh wow. Shame on me for not finding that myself. Thanks.

            – nevermind
            Dec 29 '18 at 16:29



















          • Oh wow. Shame on me for not finding that myself. Thanks.

            – nevermind
            Dec 29 '18 at 16:29

















          Oh wow. Shame on me for not finding that myself. Thanks.

          – nevermind
          Dec 29 '18 at 16:29





          Oh wow. Shame on me for not finding that myself. Thanks.

          – nevermind
          Dec 29 '18 at 16:29


















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