我正在创建一个照片应用程序,它将每隔 x 秒显示一次新照片(在线)。但是应用程序在随机时刻一段时间后崩溃。创建了一个测试应用程序(注意:丑陋/肮脏且未优化的代码)来重现崩溃,请参见下面的代码。
#include <Elementary.h>
// gcc -g main.c -o main `pkg-config --cflags --libs elementary`
// @url https://www.enlightenment.org/docs/efl/start
Evas_Object *win;
int curIndex = 0;
int numposters = 1022;
int showXImages = 4;
int showYImages = 2;
int widthImage = 200;
int heightImage = 300;
int padding = 20;
Evas_Object* curImages[8] = {NULL}; // showXImages * showYImages
static void getImage(Evas_Object *win) {
int x, y;
for (y=0; y<showYImages; ++y) {
for (x=0; x<showXImages; ++x) {
// Destroy previous one
int index = y*showXImages + x;
if (curImages[index] != NULL) {
evas_object_del(curImages[index]);
curImages[index] = NULL;
}
// Create new image url
char result[1024] = "";
sprintf(result, "http://unsplash.it/200/300?image=%d", curIndex + index);
// Add new image
Evas_Object* img = elm_image_add(win);
elm_image_file_set(img, result, NULL);
evas_object_move(img, x * (widthImage + padding), y * (heightImage + padding));
evas_object_resize(img, widthImage, heightImage);
evas_object_show(img);
// Set image
curImages[index] = img;
}
}
}
Eina_Bool sCheckCallback(void *data) {
// Increase index
curIndex = curIndex + (showYImages*showXImages);
curIndex = curIndex % numposters;
// Get and set new images
getImage(win);
return ECORE_CALLBACK_RENEW;
}
EAPI_MAIN int elm_main(int argc, char **argv) {
// Create window
elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
win = elm_win_util_standard_add("Main", "Hello, World!");
elm_win_autodel_set(win, EINA_TRUE);
evas_object_resize(win, 1280, 720);
evas_object_show(win);
// Add callback
Ecore_Timer* timer = ecore_timer_add(1.0f, sCheckCallback, NULL);
elm_run();
return 0;
}
ELM_MAIN()
为了检查它是否不仅在 efl 17.1 中,我还更新到 efl-1.19.0-beta2 但崩溃仍然存在。有关堆栈跟踪的一些屏幕截图,另请参见1、2、3。