Iphone UIMenuController在iOS 4上不显示,但在iOS 5上工作
在自定义视图中,我已将“canBecomeFirstResponder”设置为返回YES 并且还定义了'-(BOOL)canperformation:(SEL)action with sender:(id)sender' 我使用以下代码显示弹出菜单:Iphone UIMenuController在iOS 4上不显示,但在iOS 5上工作,iphone,ios,ios4,ios5,uimenucontroller,Iphone,Ios,Ios4,Ios5,Uimenucontroller,在自定义视图中,我已将“canBecomeFirstResponder”设置为返回YES 并且还定义了'-(BOOL)canperformation:(SEL)action with sender:(id)sender' 我使用以下代码显示弹出菜单: [self becomeFirstResponder]; UIMenuController *theMenu = [UIMenuController sharedMenuController]; if (theMenu.menuItems==n
[self becomeFirstResponder];
UIMenuController *theMenu = [UIMenuController sharedMenuController];
if (theMenu.menuItems==nil)
{
UIMenuItem* item = [[UIMenuItem alloc] initWithTitle:@"Open" action:@selector(openAction:)];
NSArray* array = [NSArray arrayWithObject:item];
theMenu.menuItems = array;
[item release];
}
CGRect rect;
rect = CGRectMake(self.frame.size.width*0.5, self.frame.size.height*0.5, 0, 0);
[theMenu setTargetRect:rect inView:self];
theMenu.arrowDirection = UIMenuControllerArrowDown;
[theMenu setMenuVisible:YES animated:YES];
问题是,这在iOS 5上运行良好
但在iOS 4.3上没有显示任何内容
但是,在这两种情况下,都会出现“UIMenuController将显示MenuNotification”
并收到“UIMenuControllerDidShowMenuTification”通知
正如所料
有谁能帮我或给我指一下正确的方向吗。
提前谢谢
if(![self becomeFirstResponder]; )
{
NSLog(@"Couldn't become first responder ");
return;
}
首先检查成为第一响应者