在资产文件夹中找不到文件或资源

Question

I have a question, why can't access a file in my assets folder?

Folder

My code

Uri path = Uri.parse("android.resource://com.hackro.tutorials.myapplication/raw/comprobante.pdf");

String newPath = path.toString();

Resources res = getResources();

try {

    PdfReader reader = new PdfReader(newPath);
    PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("/sdcard/evidencia.pdf"));
    AcroFields fields = stamper.getAcroFields();

    fields.setField("Referencia", referencia);

    fields.setField("Fecha y Hora", fechahora);
    fields.setField("Tipo", tipo);
    fields.setField("Operacion", operacion);
    fields.setField("no. tarjeta", tarjeta);
    fields.setField("vencimiento", vencimiento);
    fields.setField("monto", monto);
    fields.setField("concepto", concepto);
    fields.setField("Nombre", nombre);
    fields.setField("Autorizacion", autorizacion);


    stamper.setFormFlattening(true);
    stamper.close();
    reader.close();
} catch (Exception e) {
    Log.e("error:   ", e.getMessage());
}

Exception

java.io.IOException: android.resource://com.hackro.tutorials.myapplication/raw/comprobante.pdf not found as file or resource.

Answer 1

You have a few problems here.

First, resources are not assets. You are attempting to use the android.resource scheme to access an asset as if it were a raw resource, and this will not work.

Second, you are constructing a Uri , then are converting that to a string, then are trying to wrap that in a File object. That will never work, for any type of Uri .

Third, neither resources nor assets are files on the filesystem of the device. They are files on the filesystem of your development machine. They are entries in the APK file on the device. You cannot get a File object pointing to a resource or an asset.

Use getAssets() on a Context (eg, your Activity or Service ) to get an AssetManager . Then, call open("comprobante.pdf") on that AssetManager to get an InputStream on the asset. Pass that to the PdfReader constructor and hope that your PDF library supports an InputStream .