在后台线程上滑动缓存磁盘上的图像

GlideApp.with(context)
    .downloadOnly()
    .diskCacheStrategy(DiskCacheStrategy.DATA) // Cache resource before it's decoded
    .load(url)
    .submit(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
    .get() // Called on background thread

缓存以备将来在后台线程中使用 那么Glide就有这个功能了

 //here i passing application context so our glide tie itself with application lifecycle

FutureTarget<File> future = Glide.with(getApplicationContext()).downloadOnly().load("your_image_url").submit();

File file = future.get();
String path = file.getAbsolutePath();

也可以在一行中返回如下路径字符串

String path = Glide.with(getApplicationContext()).downloadOnly().load("your_image_url").submit().get().getAbsolutePath();

必须调用此方法

无论你在哪里调用一个方法 Glide 或者在后台做些什么,跑进去:

runOnUiThread(new Runnable() {
                @Override
                public void run() {

              // Here, use glide or do your things on UiThread

            }
        });

我答对问题了吗?

private class update extends AsyncTask<Void, Void, Void> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    @Override
    protected Void doInBackground(Void... params) {
        try {
        RequestOptions options = new RequestOptions()
        .diskCacheStrategy(DiskCacheStrategy.ALL) // Saves all image resolution
        .centerCrop()
        .priority(Priority.HIGH)
        .placeholder(R.drawable.null_image_profile)
        .error(R.drawable.null_image_profile);

    Glide.with(context).load(imageUrl)
        .apply(options);

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        //finish
    }
}