Time for action – read files with STL stream

Let's use the STL to read resources from the SD card instead of the application asset directory, as shown in the following steps:

1. Obviously, enabling the STL is useless if we do not actively use it in our code. Let's take advantage of this opportunity to switch from asset files to external files (on a sdcard or internal memory).

   Open the existing file, jni/Resource.hpp, and do the following:

   • Include the fstream and string STL headers.
   • Use a std::string object for the file name and replace the Asset management members with an std::ifstream object (that is, an input file stream).
   • Change the getPath() method to return a C string from the new string member.
   • Remove the descriptor() method and the ResourceDescriptor class (descriptors work with the Asset API only) , as shown in the following:

     #ifndef _PACKT_RESOURCE_HPP_
     #define _PACKT_RESOURCE_HPP_
     
     #include "Types.hpp"
     
     #include <android_native_app_glue.h>
     #include <fstream...