What potential issues can arise when trying to open downloaded PDF files on an Android device?

Potential issues when trying to open downloaded PDF files on an Android device include compatibility issues with the PDF reader app, corrupted files, or insufficient storage space. To solve this, try using a different PDF reader app, re-downloading the file, or freeing up storage space on the device. 

// Check if a PDF reader app is installed
if (isAppInstalled("com.adobe.reader")) {
    // Open the PDF file using Adobe Reader
    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.setDataAndType(Uri.parse("file://" + filePath), "application/pdf");
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    startActivity(intent);
} else {
    // Prompt the user to install a PDF reader app
    Toast.makeText(context, "Please install a PDF reader app to open this file", Toast.LENGTH_SHORT).show();
}

// Function to check if an app is installed on the device
private boolean isAppInstalled(String packageName) {
    PackageManager pm = getPackageManager();
    try {
        pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES);
        return true;
    } catch (PackageManager.NameNotFoundException e) {
        return false;
    }
}

Keywords

PDF Android file permissions file format compatibility

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