[self becomeFirstResponder];//必須成為第一響應(yīng)者

UIMenuController *menuController = [UIMenuController sharedMenuController];

UIMenuItem *resetMenuItem = [[UIMenuItem alloc] initWithTitle:@"刪除" action:@selector(deleteItemClicked:)];

NSAssert([self becomeFirstResponder], @"Sorry, UIMenuController will not work with %@ since it cannot become first responder", self);

[menuController setMenuItems:[NSArray arrayWithObject:resetMenuItem]];

[menuController setTargetRect:buttonFrame inView:_svContainer];

[menuController setMenuVisible:YES animated:YES];

ios項(xiàng)目中在會(huì)用到系統(tǒng)的menu菜單這樣的小功能，但是一定要加上[self becomeFirstResponder];這句代碼，因?yàn)椴怀蔀榈谝豁憫?yīng)者，他不會(huì)work

而我在項(xiàng)目中在Debug環(huán)境下沒(méi)有事，但是在Relese環(huán)境下竟然不走。這一點(diǎn)目前很迷茫