iOS 打开关闭用户交互

上代码：

//主线程刷新ui#define MAINQUEUEUPDATEUI(UPDATECODE) dispatch_async(dispatch_get_main_queue(), ^{UPDATECODE});#pragma mark - 用户交互打开关闭/** *  打开用户交互 */+ (void)openInteractionEvents{    MAINQUEUEUPDATEUI({        if ([[UIApplication sharedApplication] isIgnoringInteractionEvents])            [[UIApplication sharedApplication] endIgnoringInteractionEvents];    })}/** *  关闭用户交互 */+ (void)closeInteractionEvents{    MAINQUEUEUPDATEUI({        if (![[UIApplication sharedApplication] isIgnoringInteractionEvents])            [[UIApplication sharedApplication] beginIgnoringInteractionEvents];    })}