android get screen size via C

Question

i want to get screen size via c. i know that jni support calling java from c. but is there any person who knows another method? i mean get screen size from lowlevel modules

Answer 1

You can also get the window size while processing the APP_CMD_INIT_WINDOW "app command" like this in your native activity:

static void engine_handle_cmd(struct android_app* app, int32_t cmd) {
struct engine* engine = (struct engine*)app->userData;
switch (cmd) {
case APP_CMD_INIT_WINDOW:
    if (engine->app->window != NULL) {
        int width = ANativeWindow_getWidth(engine->app->window);
        int height = ANativeWindow_getHeight(engine->app->window);
    }

Check out main.c in the native-activity sample NDK project if you want to know how to set up the engine struct & the engine_handle_cmd callback.