Android NDK Beginner's Guide - Second Edition

Time for action – using STL containers

Let's now replace raw arrays with standard STL containers by following these steps:

1. Open the jni/GraphicsManager.hpp header and include the headers:
   • Vector, which defines an STL container encapsulating C arrays (with a few more interesting features such as dynamic resizing)
   • Map, which encapsulates the equivalent of a Java HashMap (that is, an associative array)

   Then, remove the textureResource member in the TextureProperties structure. Use a map container instead of a raw array for mTextures (prefixed with the std namespace). The first parameter is the key type and the second the value type.

   Finally, replace all the other raw arrays with a vector, as shown in the following:

   ... #include <android_native_app_glue.h> ...