ParseImageView 是否缓存 ParseFile [英] does ParseImageView cache ParseFile

问题描述

ParseImageView 是否在 Android 中缓存 ParseFile.如果它缓存了 parseFile，我如何在我的 android 设备中找到这些文件的路径.

Does ParseImageView cache ParseFile's in Android. If it caches parseFile, How can i find the path of those files in my android device.

ParseImageView imageView = (ParseImageView) findViewById(android.R.id.icon);
 // The placeholder will be used before and during the fetch, to be replaced by the fetched image
 // data.
 imageView.setPlaceholder(getResources().getDrawable(R.drawable.placeholder));
 imageView.setParseFile(file);
 imageView.loadInBackground(new GetDataCallback() {
   @Override
   public void done(byte[] data, ParseException e) {
     Log.i("ParseImageView",
         "Fetched! Data length: " + data.length + ", or exception: " + e.getMessage());
   }
 });

推荐答案

看起来 @suresh kumar 已经死了是的，所以这个问题用否"解决了，但是遇到这个麻烦我想在这里放一些代码来解决它.

Looks like @suresh kumar is dead right, so this question is settled with "no", but having run into this trouble I wanted to drop some code in here to get around it.

我使用 Universal Image Loader 来加载 URL 图片，它支持许多用于缓存和显示的配置选项.在您的应用程序类中设置它(在撰写本文时):

I use Universal Image Loader for URL image loading, and it supports a lot of configuration options for caching and display. Set it up in your Application class with (at time of writing):

    //Create image options.
    DisplayImageOptions options = new DisplayImageOptions.Builder()
        .showImageOnLoading(R.drawable.button_default)
        .cacheInMemory(true)
        .cacheOnDisc(true)
        .build();

    //Create a config with those options.
    ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())
        .defaultDisplayImageOptions(options)
        .build();

    ImageLoader.getInstance().init(config);

然后将其与 Parse 一起使用，您可以在其中加载和缓存图像:

And then use it with Parse where you'd like to load and cache your image:

        ParseImageView itemImage = (ParseImageView) v.findViewById(R.id.iv_item);
        ParseFile photoFile = item.getParseFile("picture");
        if (photoFile != null) {
            //Get singleton instance of ImageLoader
            ImageLoader imageLoader = ImageLoader.getInstance();
            //Load the image from the url into the ImageView.
            imageLoader.displayImage(photoFile.getUrl(), itemImage);
        }

希望有所帮助.

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