无法在外部库文件中应用更改

Question

我使用TedBottomPicker库进行图像选择。这是链接：https://android-arsenal.com/details/1/4320。我需要从图库文件夹的每个文件夹中选择图像（在此库的源代码中完成）。我已下载代码并在第446行编辑了TedBottomPicker.java（DIRECTORY_PICTURES到DIRECTORY_DOCUMENTS）。当我启动应用程序时工作正常，它从每个文件夹中选择图像，如相机，WhatsApp等。

现在的问题是，一旦我将这个库作为模块导入我的项目并在其源代码中将DIRECTORY_PICTURES更改为DIRECTORY_DOCUMENTS，它仍然只显示来自Pictures文件夹的图像。我按照此链接导入我的库：Android studio - add library from github 告诉我为什么我在java文件中应用的更改不会在我的android项目中显示。在此先感谢以下是外部库方法的代码：

private File getImageFile() {
    // Create an image file name
    File imageFile = null;
    try {
        String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss", Locale.getDefault()).format(new Date());
        String imageFileName = "JPEG_" + timeStamp + "_";
        File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);

        if (!storageDir.exists())
            storageDir.mkdirs();

        imageFile = File.createTempFile(
                imageFileName,  /* prefix */
                ".jpg",         /* suffix */
                storageDir      /* directory */
        );


        // Save a file: path for use with ACTION_VIEW intents
        cameraImageUri = Uri.fromFile(imageFile);
    } catch (IOException e) {
        e.printStackTrace();
        errorMessage("Could not create imageFile for camera");
    }

    return imageFile;
}

我在我的活动中使用了这段代码：
`

if(tempImageList.size()>0){
    //Loading with previous selection
    bottomSheetDialogFragment = new TedBottomPicker.Builder(MessagesActivity.this)
           .setOnMultiImageSelectedListener(new TedBottomPicker.OnMultiImageSelectedListener() {
                @Override
                public void onImagesSelected(ArrayList<Uri> uriList) {
                    tempImageList = uriList;
                    for (int i = 0; i < tempImageList.size(); i++) {
                        Uri uri=tempImageList.get(i); //setting selected images in my variable
                        System.out.print("myUri"+ uri);
                    }
                }
           })
           .setPeekHeight(1000)
           .showTitle(false)
           .setCompleteButtonText("Done")
           .setEmptySelectionText("No Select")
           .setSelectedUriList(tempImageList)
           .create();
    bottomSheetDialogFragment.show(getSupportFragmentManager());
} else {
    //Loading New 
    bottomSheetDialogFragment = new TedBottomPicker.Builder(MessagesActivity.this)
           .setOnMultiImageSelectedListener(new TedBottomPicker.OnMultiImageSelectedListener() {
                @Override
                public void onImagesSelected(ArrayList<Uri> uriList) {
                    tempImageList=uriList;
                }
            })
            .setPeekHeight(1000)
            .showTitle(false)
            .setCompleteButtonText("Done")
            .setEmptySelectionText("No Select")
            .create();
    bottomSheetDialogFragment.show(getSupportFragmentManager());
}