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Why is my Android app throwing a \'The file path is not valid\' error when trying to read a PDF from the assets folder?

Patricia Arquette
Release: 2024-10-28 09:48:29
Original
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Why is my Android app throwing a

Read a PDF File from Assets Folder

Problem:

In an Android application, attempts to read a PDF file from the assets folder using the provided code result in the error message "The file path is not valid."

Code:

The relevant code section is as follows:

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<code class="java">File file = new File("android.resource://com.project.datastructure/assets/abc.pdf");

 

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(file), "application/pdf");

startActivity(intent);</code>

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Solution:

The issue lies in the path provided to the File object. The correct path should retrieve the PDF file from the assets folder using getAssets().

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<code class="java">AssetManager assetManager = getAssets();

InputStream in = assetManager.open("abc.pdf");

OutputStream out = openFileOutput("abc.pdf", Context.MODE_WORLD_READABLE);

 

// Copy PDF file to internal storage

copyFile(in, out);

 

// Create Intent and URI for file in internal storage

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.parse("file://" + getFilesDir() + "/abc.pdf"), "application/pdf");

 

startActivity(intent);</code>

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Additional Notes:

  • Don't forget to add the WRITE_EXTERNAL_STORAGE permission to the manifest file.
  • The copyFile() method is used to copy the PDF file from the assets folder to internal storage, making it accessible by the Intent.
  • The URI is constructed using Uri.parse() to point to the file's location in internal storage.

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