(Necessitas is an implementation of qt development on Android platform. As we all know, Qt is a cross platform C GUI application framework of Nokia Everything (first created by Qiqu Technology and then bought by Nokia). It provides all the functions required by the application developer to create an artistic graphical user interface. Qt is a simple extension to any object, and allows real component programming. Qt now supports Windows, Linux, Macosx and other platforms, and in the field of smart phone operating systems, it supports Windows Mobile, Symbian and Meego platforms. However, the android platform has now become an insignificant platform in the smartphone field, and android now only supports java development. Unfortunately, the support for C development is very limited and incomplete. The user program developed by java runs on the virtual machine and uses the same algorithm. Compared with the native C code, it has some function loss. Later, Google realized this and allowed the use of C language to develop class libraries and be called by java programs, but it could not create complete GUI programs. Thus, there is a necessary project that combines qt with android.
The QT implementation of Android platform Necessitas.exe)