What exactly does `-rdynamic` do and when exactly is it needed?

Here is a simple example project to illustrate the use of -rdynamic. bar.c extern void foo(void); void bar(void) { foo(); } main.c #include <dlfcn.h> #include <stdio.h> #include <stdlib.h> void foo(void) { puts(“Hello world”); } int main(void) { void * dlh = dlopen(“./libbar.so”, RTLD_NOW); if (!dlh) { fprintf(stderr, “%s\n”, dlerror()); exit(EXIT_FAILURE); } void (*bar)(void) = dlsym(dlh,”bar”); … Read more

dynamic listview adding “Load more items” at the end of scroll

you try the following code list.setOnScrollListener(new OnScrollListener() { public void onScrollStateChanged(AbsListView view, int scrollState) { } public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { if(firstVisibleItem+visibleItemCount == totalItemCount && totalItemCount!=0) { if(flag_loading == false) { flag_loading = true; additems(); } } } }); in the additem() add the next 10 items to array … Read more