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

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:

<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>

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().

<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>

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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