如何获取Android中pdf文件的页数? [英] How to get the number of pages of a pdf file in Android?

问题描述

您能帮我找出Android上pdf文档的页数吗，至少支持api版本16. .到目前为止，这是我要做的事情:

Can you help me find out the number of pages of a pdf document on Android, that will support down to at least api version 16. I am extracting document information but can't see a solution to get the total amount of pages. This Is what I doo so far:

private void extractDocumentDataFromUri(Uri uri)
    {
        String[] dataFileds = new String[]{
                MediaStore.MediaColumns.DATA,
                OpenableColumns.DISPLAY_NAME,
                OpenableColumns.SIZE};

        Cursor cursor = context.getContentResolver().query(uri, dataFileds, null, null, null);
        cursor.moveToFirst();

        contentUrl = cursor.getString(cursor.getColumnIndex(MediaStore.MediaColumns.DATA));
        title = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
        size = cursor.getInt(cursor.getColumnIndex(OpenableColumns.SIZE));

        cursor.close();

        contentType = context.getContentResolver().getType(uri);
    }

推荐答案

如果将iTextG库添加到libs文件夹，则此解决方案有效.该库包含一个名为 PdfReader 的类.

This solution works if you add the iTextG library to your libs folder. The library contains a class called PdfReader.

尝试这样的事情:

PdfReader reader = new PdfReader("Your file path");
int aa = reader.getNumberOfPages();

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