# SDL_SendAndroidMessage Send a user command to SDLActivity. ## Header File Defined in [<SDL3/SDL_system.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_system.h) ## Syntax ```c bool SDL_SendAndroidMessage(Uint32 command, int param); ``` ## Function Parameters | | | | | ---------------- | ----------- | ----------------------------------------------------- | | [Uint32](Uint32) | **command** | user command that must be greater or equal to 0x8000. | | int | **param** | user parameter. | ## Return Value (bool) Returns true on success or false on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks Override "boolean onUnhandledMessage(Message msg)" to handle the message. ## Thread Safety It is safe to call this function from any thread. ## Version This function is available since SDL 3.2.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategorySystem](CategorySystem)