[Android] File Read Function Error

    public String file_read(String filename){
        InputStream input;
        String text = "";
        try {
            AssetManager assetManager = getAssets();
            input = assetManager.open(filename);
            int size = input.available();
            byte[] buffer = new byte[size];
            input.read(buffer);
            input.close();
            text = new String(buffer);
        } catch(IOException e){
            e.printStackTrace();
        }
        return text;
    }

______________________________________________________________________________________
HTTP://ANONTHING.PL
HTTP://HACKTUT.UGU.PL