java如何在应用程序上使用PDFView在警报对话框中打开文档而不使用意图

Question

我在Firebase仓库里有一份文件。我想打开该文档，并使用警报对话框和pdf viewer:2.8.2库中的PDFView显示它。单击setPositiveButton时，此选项不起作用。你知道我可能做错了什么吗？这是我正在写的代码

 holder.postDocument.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            final AlertDialog.Builder builder = new AlertDialog.Builder(mContext, R.style.AlertDialog);
            builder.setTitle("Open the document?");
            builder.setPositiveButton("Open", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(final DialogInterface dialog, int which) {

                   final PDFView pdfView = new PDFView(mContext, null);
                   pdfView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
                   pdfView.fromAsset(post.getPostdocument());
                   pdfView.loadPages();
                   builder.setView(pdfView);

                    
                }
            }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });

            builder.show();
        }
    });

Answer 1

您可以在警报对话框https://github.com/eduxcellence/PDFViewer/find/master中轻松找到解决方案并粘贴