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OH_ArkUI_PostAsyncUITask

arkui_sys::native_node

Function OH_ArkUI_PostAsyncUITask 

Source 
pub unsafe extern "C" fn OH_ArkUI_PostAsyncUITask(
    context: ArkUI_ContextHandle,
    asyncUITaskData: *mut c_void,
    asyncUITask: Option<unsafe extern "C" fn(asyncUITaskData: *mut c_void)>,
    onFinish: Option<unsafe extern "C" fn(asyncUITaskData: *mut c_void)>,
) -> i32
Available on crate features api-12 and api-22 only.
Expand description

Post UI task to background threads.

§Arguments

  • context - UIContext pointer of the page where the UI task located.

  • asyncUITaskData - Parameter of asyncUITask and onFinish.

  • asyncUITask - Function executed by a background thread.

  • onFinish - Function executed by UI thread after async UI task is executed.

§Returns

  • Returns the result code. Returns [ARKUI_ERROR_CODE_NO_ERROR] if the operation is successful. Returns [ARKUI_ERROR_CODE_PARAM_INVALID] if context or asyncUITask is nullptr.

Available since API-level: 22