第一个有结构的黑窗口为了记忆函数。
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
int main(int,char**){
SDL_Renderer*renderer;
SDL_Window*win=NULL;
SDL_Surface*hello=NULL;
SDL_Surface*world=NULL;
SDL_Init(SDL_INIT_EVERYTHING);
win=SDL_CreateWindow("myhw",0,0,400,500,0);
hello=IMG_Load("/sdcard/DCIM/ 6.jpg");
SDL_FreeSurface(hello);
SDL_Delay(2000);
SDL_Quit();
return 0;
}

第二个成功输出图片

#include <SDL2/SDL.h>
#include<SDL2/SDL_image.h>
int main(int,char**){
SDL_Window*win=NULL;
SDL_Surface*Surface=NULL;
SDL_Texture*Texture=NULL;
SDL_Renderer*r=NULL;
SDL_Init(SDL_INIT_EVERYTHING);
win=SDL_CreateWindow("六",0,0,400,600,0);
Surface=IMG_Load("/sdcard/hello.jpg");
r=SDL_CreateRenderer(win,-1,SDL_RENDERER_ACCELERATED);
Texture=
SDL_CreateTextureFromSurface(r,
Surface);
SDL_FreeSurface(Surface);
SDL_RenderClear(r);
SDL_RenderCopy(r,Texture,NULL,
NULL);
SDL_RenderPresent(r);
SDL_Delay(3000);
SDL_DestroyTexture(Texture);
SDL_DestroyRenderer(r);
SDL_DestroyWindow(win);
return 0;
}

算了api还是存手机上