Android：通过Glide保存图片到本地，并同步到相册

save.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Glide.with(itemActivity.this)
                            .asBitmap()
                            .load(url)
                            .into(new SimpleTarget<Bitmap>() {
                                @Override
                                public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                                    saveImage(resource);
                                }
                            });

                }
            });

private void saveImage(Bitmap image) {
        String saveImagePath = null;
        Random random = new Random();
        String imageFileName = "JPEG_" + "down" + random.nextInt(10) + ".jpg";
        File storageDir = new File(Environment.getExternalStoragePublicDirectory
                (Environment.DIRECTORY_PICTURES) + "test");

        boolean success = true;
        if(!storageDir.exists()){
            success = storageDir.mkdirs();
        }
        if(success){
            File imageFile = new File(storageDir, imageFileName);
            saveImagePath = imageFile.getAbsolutePath();
            try {
                OutputStream fout = new FileOutputStream(imageFile);
                image.compress(Bitmap.CompressFormat.JPEG, 100, fout);
                fout.close();
            } catch (Exception e) {
                e.printStackTrace();
            }

            // Add the image to the system gallery
            galleryAddPic(saveImagePath);
            Toast.makeText(mContext, "IMAGE SAVED", Toast.LENGTH_LONG).show();
        }
//        return saveImagePath;
    }

    private void galleryAddPic(String imagePath) {
        Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        File f = new File(imagePath);
        Uri contentUri = Uri.fromFile(f);
        mediaScanIntent.setData(contentUri);
        sendBroadcast(mediaScanIntent);
    }